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-rw-r--r--js/src/tests/test262/language/statements/const/dstr/ary-init-iter-close.js47
-rw-r--r--js/src/tests/test262/language/statements/const/dstr/ary-init-iter-get-err-array-prototype.js42
-rw-r--r--js/src/tests/test262/language/statements/const/dstr/ary-init-iter-get-err.js36
-rw-r--r--js/src/tests/test262/language/statements/const/dstr/ary-init-iter-no-close.js47
-rw-r--r--js/src/tests/test262/language/statements/const/dstr/ary-name-iter-val.js46
-rw-r--r--js/src/tests/test262/language/statements/const/dstr/ary-ptrn-elem-ary-elem-init.js38
-rw-r--r--js/src/tests/test262/language/statements/const/dstr/ary-ptrn-elem-ary-elem-iter.js39
-rw-r--r--js/src/tests/test262/language/statements/const/dstr/ary-ptrn-elem-ary-elision-init.js45
-rw-r--r--js/src/tests/test262/language/statements/const/dstr/ary-ptrn-elem-ary-elision-iter.js42
-rw-r--r--js/src/tests/test262/language/statements/const/dstr/ary-ptrn-elem-ary-empty-init.js41
-rw-r--r--js/src/tests/test262/language/statements/const/dstr/ary-ptrn-elem-ary-empty-iter.js38
-rw-r--r--js/src/tests/test262/language/statements/const/dstr/ary-ptrn-elem-ary-rest-init.js42
-rw-r--r--js/src/tests/test262/language/statements/const/dstr/ary-ptrn-elem-ary-rest-iter.js45
-rw-r--r--js/src/tests/test262/language/statements/const/dstr/ary-ptrn-elem-ary-val-null.js43
-rw-r--r--js/src/tests/test262/language/statements/const/dstr/ary-ptrn-elem-id-init-exhausted.js37
-rw-r--r--js/src/tests/test262/language/statements/const/dstr/ary-ptrn-elem-id-init-fn-name-arrow.js38
-rw-r--r--js/src/tests/test262/language/statements/const/dstr/ary-ptrn-elem-id-init-fn-name-class.js40
-rw-r--r--js/src/tests/test262/language/statements/const/dstr/ary-ptrn-elem-id-init-fn-name-cover.js39
-rw-r--r--js/src/tests/test262/language/statements/const/dstr/ary-ptrn-elem-id-init-fn-name-fn.js39
-rw-r--r--js/src/tests/test262/language/statements/const/dstr/ary-ptrn-elem-id-init-fn-name-gen.js40
-rw-r--r--js/src/tests/test262/language/statements/const/dstr/ary-ptrn-elem-id-init-hole.js33
-rw-r--r--js/src/tests/test262/language/statements/const/dstr/ary-ptrn-elem-id-init-skipped.js42
-rw-r--r--js/src/tests/test262/language/statements/const/dstr/ary-ptrn-elem-id-init-throws.js34
-rw-r--r--js/src/tests/test262/language/statements/const/dstr/ary-ptrn-elem-id-init-undef.js36
-rw-r--r--js/src/tests/test262/language/statements/const/dstr/ary-ptrn-elem-id-init-unresolvable.js41
-rw-r--r--js/src/tests/test262/language/statements/const/dstr/ary-ptrn-elem-id-iter-complete.js40
-rw-r--r--js/src/tests/test262/language/statements/const/dstr/ary-ptrn-elem-id-iter-done.js35
-rw-r--r--js/src/tests/test262/language/statements/const/dstr/ary-ptrn-elem-id-iter-step-err.js43
-rw-r--r--js/src/tests/test262/language/statements/const/dstr/ary-ptrn-elem-id-iter-val-array-prototype.js56
-rw-r--r--js/src/tests/test262/language/statements/const/dstr/ary-ptrn-elem-id-iter-val-err.js54
-rw-r--r--js/src/tests/test262/language/statements/const/dstr/ary-ptrn-elem-id-iter-val.js46
-rw-r--r--js/src/tests/test262/language/statements/const/dstr/ary-ptrn-elem-obj-id-init.js38
-rw-r--r--js/src/tests/test262/language/statements/const/dstr/ary-ptrn-elem-obj-id.js38
-rw-r--r--js/src/tests/test262/language/statements/const/dstr/ary-ptrn-elem-obj-prop-id-init.js48
-rw-r--r--js/src/tests/test262/language/statements/const/dstr/ary-ptrn-elem-obj-prop-id.js48
-rw-r--r--js/src/tests/test262/language/statements/const/dstr/ary-ptrn-elem-obj-val-null.js43
-rw-r--r--js/src/tests/test262/language/statements/const/dstr/ary-ptrn-elem-obj-val-undef.js43
-rw-r--r--js/src/tests/test262/language/statements/const/dstr/ary-ptrn-elision-exhausted.js43
-rw-r--r--js/src/tests/test262/language/statements/const/dstr/ary-ptrn-elision-step-err.js50
-rw-r--r--js/src/tests/test262/language/statements/const/dstr/ary-ptrn-elision.js52
-rw-r--r--js/src/tests/test262/language/statements/const/dstr/ary-ptrn-empty.js35
-rw-r--r--js/src/tests/test262/language/statements/const/dstr/ary-ptrn-rest-ary-elem.js59
-rw-r--r--js/src/tests/test262/language/statements/const/dstr/ary-ptrn-rest-ary-elision.js65
-rw-r--r--js/src/tests/test262/language/statements/const/dstr/ary-ptrn-rest-ary-empty.js48
-rw-r--r--js/src/tests/test262/language/statements/const/dstr/ary-ptrn-rest-ary-rest.js44
-rw-r--r--js/src/tests/test262/language/statements/const/dstr/ary-ptrn-rest-id-direct.js39
-rw-r--r--js/src/tests/test262/language/statements/const/dstr/ary-ptrn-rest-id-elision-next-err.js36
-rw-r--r--js/src/tests/test262/language/statements/const/dstr/ary-ptrn-rest-id-elision.js40
-rw-r--r--js/src/tests/test262/language/statements/const/dstr/ary-ptrn-rest-id-exhausted.js36
-rw-r--r--js/src/tests/test262/language/statements/const/dstr/ary-ptrn-rest-id-iter-step-err.js47
-rw-r--r--js/src/tests/test262/language/statements/const/dstr/ary-ptrn-rest-id-iter-val-err.js49
-rw-r--r--js/src/tests/test262/language/statements/const/dstr/ary-ptrn-rest-id.js37
-rw-r--r--js/src/tests/test262/language/statements/const/dstr/ary-ptrn-rest-init-ary.js33
-rw-r--r--js/src/tests/test262/language/statements/const/dstr/ary-ptrn-rest-init-id.js33
-rw-r--r--js/src/tests/test262/language/statements/const/dstr/ary-ptrn-rest-init-obj.js33
-rw-r--r--js/src/tests/test262/language/statements/const/dstr/ary-ptrn-rest-not-final-ary.js33
-rw-r--r--js/src/tests/test262/language/statements/const/dstr/ary-ptrn-rest-not-final-id.js33
-rw-r--r--js/src/tests/test262/language/statements/const/dstr/ary-ptrn-rest-not-final-obj.js33
-rw-r--r--js/src/tests/test262/language/statements/const/dstr/ary-ptrn-rest-obj-id.js37
-rw-r--r--js/src/tests/test262/language/statements/const/dstr/ary-ptrn-rest-obj-prop-id.js44
-rw-r--r--js/src/tests/test262/language/statements/const/dstr/browser.js0
-rw-r--r--js/src/tests/test262/language/statements/const/dstr/obj-init-null.js30
-rw-r--r--js/src/tests/test262/language/statements/const/dstr/obj-init-undefined.js30
-rw-r--r--js/src/tests/test262/language/statements/const/dstr/obj-ptrn-empty.js36
-rw-r--r--js/src/tests/test262/language/statements/const/dstr/obj-ptrn-id-get-value-err.js37
-rw-r--r--js/src/tests/test262/language/statements/const/dstr/obj-ptrn-id-init-fn-name-arrow.js37
-rw-r--r--js/src/tests/test262/language/statements/const/dstr/obj-ptrn-id-init-fn-name-class.js39
-rw-r--r--js/src/tests/test262/language/statements/const/dstr/obj-ptrn-id-init-fn-name-cover.js38
-rw-r--r--js/src/tests/test262/language/statements/const/dstr/obj-ptrn-id-init-fn-name-fn.js38
-rw-r--r--js/src/tests/test262/language/statements/const/dstr/obj-ptrn-id-init-fn-name-gen.js39
-rw-r--r--js/src/tests/test262/language/statements/const/dstr/obj-ptrn-id-init-skipped.js41
-rw-r--r--js/src/tests/test262/language/statements/const/dstr/obj-ptrn-id-init-throws.js37
-rw-r--r--js/src/tests/test262/language/statements/const/dstr/obj-ptrn-id-init-unresolvable.js41
-rw-r--r--js/src/tests/test262/language/statements/const/dstr/obj-ptrn-id-trailing-comma.js31
-rw-r--r--js/src/tests/test262/language/statements/const/dstr/obj-ptrn-list-err.js38
-rw-r--r--js/src/tests/test262/language/statements/const/dstr/obj-ptrn-prop-ary-init.js40
-rw-r--r--js/src/tests/test262/language/statements/const/dstr/obj-ptrn-prop-ary-trailing-comma.js31
-rw-r--r--js/src/tests/test262/language/statements/const/dstr/obj-ptrn-prop-ary-value-null.js32
-rw-r--r--js/src/tests/test262/language/statements/const/dstr/obj-ptrn-prop-ary.js38
-rw-r--r--js/src/tests/test262/language/statements/const/dstr/obj-ptrn-prop-eval-err.js34
-rw-r--r--js/src/tests/test262/language/statements/const/dstr/obj-ptrn-prop-id-get-value-err.js39
-rw-r--r--js/src/tests/test262/language/statements/const/dstr/obj-ptrn-prop-id-init-skipped.js53
-rw-r--r--js/src/tests/test262/language/statements/const/dstr/obj-ptrn-prop-id-init-throws.js37
-rw-r--r--js/src/tests/test262/language/statements/const/dstr/obj-ptrn-prop-id-init-unresolvable.js41
-rw-r--r--js/src/tests/test262/language/statements/const/dstr/obj-ptrn-prop-id-init.js34
-rw-r--r--js/src/tests/test262/language/statements/const/dstr/obj-ptrn-prop-id-trailing-comma.js35
-rw-r--r--js/src/tests/test262/language/statements/const/dstr/obj-ptrn-prop-id.js34
-rw-r--r--js/src/tests/test262/language/statements/const/dstr/obj-ptrn-prop-obj-init.js40
-rw-r--r--js/src/tests/test262/language/statements/const/dstr/obj-ptrn-prop-obj-value-null.js32
-rw-r--r--js/src/tests/test262/language/statements/const/dstr/obj-ptrn-prop-obj-value-undef.js32
-rw-r--r--js/src/tests/test262/language/statements/const/dstr/obj-ptrn-prop-obj.js38
-rw-r--r--js/src/tests/test262/language/statements/const/dstr/obj-ptrn-rest-getter.js33
-rw-r--r--js/src/tests/test262/language/statements/const/dstr/obj-ptrn-rest-skip-non-enumerable.js41
-rw-r--r--js/src/tests/test262/language/statements/const/dstr/obj-ptrn-rest-val-obj.js40
-rw-r--r--js/src/tests/test262/language/statements/const/dstr/shell.js0
95 files changed, 3717 insertions, 0 deletions
diff --git a/js/src/tests/test262/language/statements/const/dstr/ary-init-iter-close.js b/js/src/tests/test262/language/statements/const/dstr/ary-init-iter-close.js
new file mode 100644
index 0000000000..9a7bd72af7
--- /dev/null
+++ b/js/src/tests/test262/language/statements/const/dstr/ary-init-iter-close.js
@@ -0,0 +1,47 @@
+// This file was procedurally generated from the following sources:
+// - src/dstr-binding/ary-init-iter-close.case
+// - src/dstr-binding/default/const-stmt.template
+/*---
+description: Iterator is closed when not exhausted by pattern evaluation (`const` statement)
+esid: sec-let-and-const-declarations-runtime-semantics-evaluation
+features: [Symbol.iterator, destructuring-binding]
+flags: [generated]
+info: |
+ LexicalBinding : BindingPattern Initializer
+
+ 1. Let rhs be the result of evaluating Initializer.
+ 2. Let value be GetValue(rhs).
+ 3. ReturnIfAbrupt(value).
+ 4. Let env be the running execution context's LexicalEnvironment.
+ 5. Return the result of performing BindingInitialization for BindingPattern
+ using value and env as the arguments.
+
+ 13.3.3.5 Runtime Semantics: BindingInitialization
+
+ BindingPattern : ArrayBindingPattern
+
+ [...]
+ 4. If iteratorRecord.[[done]] is false, return ? IteratorClose(iterator,
+ result).
+ [...]
+
+---*/
+var doneCallCount = 0;
+var iter = {};
+iter[Symbol.iterator] = function() {
+ return {
+ next: function() {
+ return { value: null, done: false };
+ },
+ return: function() {
+ doneCallCount += 1;
+ return {};
+ }
+ };
+};
+
+const [x] = iter;
+
+assert.sameValue(doneCallCount, 1);
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/language/statements/const/dstr/ary-init-iter-get-err-array-prototype.js b/js/src/tests/test262/language/statements/const/dstr/ary-init-iter-get-err-array-prototype.js
new file mode 100644
index 0000000000..29204bfad0
--- /dev/null
+++ b/js/src/tests/test262/language/statements/const/dstr/ary-init-iter-get-err-array-prototype.js
@@ -0,0 +1,42 @@
+// This file was procedurally generated from the following sources:
+// - src/dstr-binding/ary-init-iter-get-err-array-prototype.case
+// - src/dstr-binding/error/const-stmt.template
+/*---
+description: Abrupt completion returned by GetIterator (`const` statement)
+esid: sec-let-and-const-declarations-runtime-semantics-evaluation
+features: [Symbol.iterator, destructuring-binding]
+flags: [generated]
+info: |
+ LexicalBinding : BindingPattern Initializer
+
+ 1. Let rhs be the result of evaluating Initializer.
+ 2. Let value be GetValue(rhs).
+ 3. ReturnIfAbrupt(value).
+ 4. Let env be the running execution context's LexicalEnvironment.
+ 5. Return the result of performing BindingInitialization for BindingPattern
+ using value and env as the arguments.
+
+ Runtime Semantics: BindingInitialization
+
+ BindingPattern : ArrayBindingPattern
+
+ 1. Let iteratorRecord be ? GetIterator(value).
+
+ GetIterator ( obj [ , hint [ , method ] ] )
+
+ [...]
+ 4. Let iterator be ? Call(method, obj).
+
+ Call ( F, V [ , argumentsList ] )
+
+ [...]
+ 2. If IsCallable(F) is false, throw a TypeError exception.
+
+---*/
+delete Array.prototype[Symbol.iterator];
+
+assert.throws(TypeError, function() {
+ const [x, y, z] = [1, 2, 3];
+});
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/language/statements/const/dstr/ary-init-iter-get-err.js b/js/src/tests/test262/language/statements/const/dstr/ary-init-iter-get-err.js
new file mode 100644
index 0000000000..33dc767fef
--- /dev/null
+++ b/js/src/tests/test262/language/statements/const/dstr/ary-init-iter-get-err.js
@@ -0,0 +1,36 @@
+// This file was procedurally generated from the following sources:
+// - src/dstr-binding/ary-init-iter-get-err.case
+// - src/dstr-binding/error/const-stmt.template
+/*---
+description: Abrupt completion returned by GetIterator (`const` statement)
+esid: sec-let-and-const-declarations-runtime-semantics-evaluation
+features: [Symbol.iterator, destructuring-binding]
+flags: [generated]
+info: |
+ LexicalBinding : BindingPattern Initializer
+
+ 1. Let rhs be the result of evaluating Initializer.
+ 2. Let value be GetValue(rhs).
+ 3. ReturnIfAbrupt(value).
+ 4. Let env be the running execution context's LexicalEnvironment.
+ 5. Return the result of performing BindingInitialization for BindingPattern
+ using value and env as the arguments.
+
+ 13.3.3.5 Runtime Semantics: BindingInitialization
+
+ BindingPattern : ArrayBindingPattern
+
+ 1. Let iterator be GetIterator(value).
+ 2. ReturnIfAbrupt(iterator).
+
+---*/
+var iter = {};
+iter[Symbol.iterator] = function() {
+ throw new Test262Error();
+};
+
+assert.throws(Test262Error, function() {
+ const [x] = iter;
+});
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/language/statements/const/dstr/ary-init-iter-no-close.js b/js/src/tests/test262/language/statements/const/dstr/ary-init-iter-no-close.js
new file mode 100644
index 0000000000..195a24702e
--- /dev/null
+++ b/js/src/tests/test262/language/statements/const/dstr/ary-init-iter-no-close.js
@@ -0,0 +1,47 @@
+// This file was procedurally generated from the following sources:
+// - src/dstr-binding/ary-init-iter-no-close.case
+// - src/dstr-binding/default/const-stmt.template
+/*---
+description: Iterator is not closed when exhausted by pattern evaluation (`const` statement)
+esid: sec-let-and-const-declarations-runtime-semantics-evaluation
+features: [Symbol.iterator, destructuring-binding]
+flags: [generated]
+info: |
+ LexicalBinding : BindingPattern Initializer
+
+ 1. Let rhs be the result of evaluating Initializer.
+ 2. Let value be GetValue(rhs).
+ 3. ReturnIfAbrupt(value).
+ 4. Let env be the running execution context's LexicalEnvironment.
+ 5. Return the result of performing BindingInitialization for BindingPattern
+ using value and env as the arguments.
+
+ 13.3.3.5 Runtime Semantics: BindingInitialization
+
+ BindingPattern : ArrayBindingPattern
+
+ [...]
+ 4. If iteratorRecord.[[done]] is false, return ? IteratorClose(iterator,
+ result).
+ [...]
+
+---*/
+var doneCallCount = 0;
+var iter = {};
+iter[Symbol.iterator] = function() {
+ return {
+ next: function() {
+ return { value: null, done: true };
+ },
+ return: function() {
+ doneCallCount += 1;
+ return {};
+ }
+ };
+};
+
+const [x] = iter;
+
+assert.sameValue(doneCallCount, 0);
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/language/statements/const/dstr/ary-name-iter-val.js b/js/src/tests/test262/language/statements/const/dstr/ary-name-iter-val.js
new file mode 100644
index 0000000000..7d316d9e63
--- /dev/null
+++ b/js/src/tests/test262/language/statements/const/dstr/ary-name-iter-val.js
@@ -0,0 +1,46 @@
+// This file was procedurally generated from the following sources:
+// - src/dstr-binding/ary-name-iter-val.case
+// - src/dstr-binding/default/const-stmt.template
+/*---
+description: SingleNameBinding with normal value iteration (`const` statement)
+esid: sec-let-and-const-declarations-runtime-semantics-evaluation
+features: [destructuring-binding]
+flags: [generated]
+info: |
+ LexicalBinding : BindingPattern Initializer
+
+ 1. Let rhs be the result of evaluating Initializer.
+ 2. Let value be GetValue(rhs).
+ 3. ReturnIfAbrupt(value).
+ 4. Let env be the running execution context's LexicalEnvironment.
+ 5. Return the result of performing BindingInitialization for BindingPattern
+ using value and env as the arguments.
+
+ 13.3.3.6 Runtime Semantics: IteratorBindingInitialization
+
+ SingleNameBinding : BindingIdentifier Initializeropt
+
+ [...]
+ 4. If iteratorRecord.[[done]] is false, then
+ a. Let next be IteratorStep(iteratorRecord.[[iterator]]).
+ b. If next is an abrupt completion, set iteratorRecord.[[done]] to true.
+ c. ReturnIfAbrupt(next).
+ d. If next is false, set iteratorRecord.[[done]] to true.
+ e. Else,
+ [...]
+ i. Let v be IteratorValue(next).
+ ii. If v is an abrupt completion, set
+ iteratorRecord.[[done]] to true.
+ iii. ReturnIfAbrupt(v).
+ 5. If iteratorRecord.[[done]] is true, let v be undefined.
+ [...]
+ 8. Return InitializeReferencedBinding(lhs, v).
+---*/
+
+const [x, y, z] = [1, 2, 3];
+
+assert.sameValue(x, 1);
+assert.sameValue(y, 2);
+assert.sameValue(z, 3);
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/language/statements/const/dstr/ary-ptrn-elem-ary-elem-init.js b/js/src/tests/test262/language/statements/const/dstr/ary-ptrn-elem-ary-elem-init.js
new file mode 100644
index 0000000000..d00b90090c
--- /dev/null
+++ b/js/src/tests/test262/language/statements/const/dstr/ary-ptrn-elem-ary-elem-init.js
@@ -0,0 +1,38 @@
+// This file was procedurally generated from the following sources:
+// - src/dstr-binding/ary-ptrn-elem-ary-elem-init.case
+// - src/dstr-binding/default/const-stmt.template
+/*---
+description: BindingElement with array binding pattern and initializer is used (`const` statement)
+esid: sec-let-and-const-declarations-runtime-semantics-evaluation
+features: [destructuring-binding]
+flags: [generated]
+info: |
+ LexicalBinding : BindingPattern Initializer
+
+ 1. Let rhs be the result of evaluating Initializer.
+ 2. Let value be GetValue(rhs).
+ 3. ReturnIfAbrupt(value).
+ 4. Let env be the running execution context's LexicalEnvironment.
+ 5. Return the result of performing BindingInitialization for BindingPattern
+ using value and env as the arguments.
+
+ 13.3.3.6 Runtime Semantics: IteratorBindingInitialization
+
+ BindingElement : BindingPatternInitializer opt
+
+ [...]
+ 2. If iteratorRecord.[[done]] is true, let v be undefined.
+ 3. If Initializer is present and v is undefined, then
+ a. Let defaultValue be the result of evaluating Initializer.
+ b. Let v be ? GetValue(defaultValue).
+ 4. Return the result of performing BindingInitialization of BindingPattern
+ with v and environment as the arguments.
+---*/
+
+const [[x, y, z] = [4, 5, 6]] = [];
+
+assert.sameValue(x, 4);
+assert.sameValue(y, 5);
+assert.sameValue(z, 6);
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/language/statements/const/dstr/ary-ptrn-elem-ary-elem-iter.js b/js/src/tests/test262/language/statements/const/dstr/ary-ptrn-elem-ary-elem-iter.js
new file mode 100644
index 0000000000..7e5fa5633b
--- /dev/null
+++ b/js/src/tests/test262/language/statements/const/dstr/ary-ptrn-elem-ary-elem-iter.js
@@ -0,0 +1,39 @@
+// This file was procedurally generated from the following sources:
+// - src/dstr-binding/ary-ptrn-elem-ary-elem-iter.case
+// - src/dstr-binding/default/const-stmt.template
+/*---
+description: BindingElement with array binding pattern and initializer is not used (`const` statement)
+esid: sec-let-and-const-declarations-runtime-semantics-evaluation
+features: [destructuring-binding]
+flags: [generated]
+info: |
+ LexicalBinding : BindingPattern Initializer
+
+ 1. Let rhs be the result of evaluating Initializer.
+ 2. Let value be GetValue(rhs).
+ 3. ReturnIfAbrupt(value).
+ 4. Let env be the running execution context's LexicalEnvironment.
+ 5. Return the result of performing BindingInitialization for BindingPattern
+ using value and env as the arguments.
+
+ 13.3.3.6 Runtime Semantics: IteratorBindingInitialization
+
+ BindingElement : BindingPatternInitializer opt
+
+ 1. If iteratorRecord.[[done]] is false, then
+ a. Let next be IteratorStep(iteratorRecord.[[iterator]]).
+ [...]
+ e. Else,
+ i. Let v be IteratorValue(next).
+ [...]
+ 4. Return the result of performing BindingInitialization of BindingPattern
+ with v and environment as the arguments.
+---*/
+
+const [[x, y, z] = [4, 5, 6]] = [[7, 8, 9]];
+
+assert.sameValue(x, 7);
+assert.sameValue(y, 8);
+assert.sameValue(z, 9);
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/language/statements/const/dstr/ary-ptrn-elem-ary-elision-init.js b/js/src/tests/test262/language/statements/const/dstr/ary-ptrn-elem-ary-elision-init.js
new file mode 100644
index 0000000000..88be25961c
--- /dev/null
+++ b/js/src/tests/test262/language/statements/const/dstr/ary-ptrn-elem-ary-elision-init.js
@@ -0,0 +1,45 @@
+// This file was procedurally generated from the following sources:
+// - src/dstr-binding/ary-ptrn-elem-ary-elision-init.case
+// - src/dstr-binding/default/const-stmt.template
+/*---
+description: BindingElement with array binding pattern and initializer is used (`const` statement)
+esid: sec-let-and-const-declarations-runtime-semantics-evaluation
+features: [generators, destructuring-binding]
+flags: [generated]
+info: |
+ LexicalBinding : BindingPattern Initializer
+
+ 1. Let rhs be the result of evaluating Initializer.
+ 2. Let value be GetValue(rhs).
+ 3. ReturnIfAbrupt(value).
+ 4. Let env be the running execution context's LexicalEnvironment.
+ 5. Return the result of performing BindingInitialization for BindingPattern
+ using value and env as the arguments.
+
+ 13.3.3.6 Runtime Semantics: IteratorBindingInitialization
+
+ BindingElement : BindingPatternInitializer opt
+
+ [...]
+ 2. If iteratorRecord.[[done]] is true, let v be undefined.
+ 3. If Initializer is present and v is undefined, then
+ a. Let defaultValue be the result of evaluating Initializer.
+ b. Let v be ? GetValue(defaultValue).
+ 4. Return the result of performing BindingInitialization of BindingPattern
+ with v and environment as the arguments.
+
+---*/
+var first = 0;
+var second = 0;
+function* g() {
+ first += 1;
+ yield;
+ second += 1;
+};
+
+const [[,] = g()] = [];
+
+assert.sameValue(first, 1);
+assert.sameValue(second, 0);
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/language/statements/const/dstr/ary-ptrn-elem-ary-elision-iter.js b/js/src/tests/test262/language/statements/const/dstr/ary-ptrn-elem-ary-elision-iter.js
new file mode 100644
index 0000000000..48bfffcd0f
--- /dev/null
+++ b/js/src/tests/test262/language/statements/const/dstr/ary-ptrn-elem-ary-elision-iter.js
@@ -0,0 +1,42 @@
+// This file was procedurally generated from the following sources:
+// - src/dstr-binding/ary-ptrn-elem-ary-elision-iter.case
+// - src/dstr-binding/default/const-stmt.template
+/*---
+description: BindingElement with array binding pattern and initializer is not used (`const` statement)
+esid: sec-let-and-const-declarations-runtime-semantics-evaluation
+features: [generators, destructuring-binding]
+flags: [generated]
+info: |
+ LexicalBinding : BindingPattern Initializer
+
+ 1. Let rhs be the result of evaluating Initializer.
+ 2. Let value be GetValue(rhs).
+ 3. ReturnIfAbrupt(value).
+ 4. Let env be the running execution context's LexicalEnvironment.
+ 5. Return the result of performing BindingInitialization for BindingPattern
+ using value and env as the arguments.
+
+ 13.3.3.6 Runtime Semantics: IteratorBindingInitialization
+
+ BindingElement : BindingPatternInitializer opt
+
+ 1. If iteratorRecord.[[done]] is false, then
+ a. Let next be IteratorStep(iteratorRecord.[[iterator]]).
+ [...]
+ e. Else,
+ i. Let v be IteratorValue(next).
+ [...]
+ 4. Return the result of performing BindingInitialization of BindingPattern
+ with v and environment as the arguments.
+
+---*/
+var callCount = 0;
+function* g() {
+ callCount += 1;
+};
+
+const [[,] = g()] = [[]];
+
+assert.sameValue(callCount, 0);
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/language/statements/const/dstr/ary-ptrn-elem-ary-empty-init.js b/js/src/tests/test262/language/statements/const/dstr/ary-ptrn-elem-ary-empty-init.js
new file mode 100644
index 0000000000..ea6bb5f68c
--- /dev/null
+++ b/js/src/tests/test262/language/statements/const/dstr/ary-ptrn-elem-ary-empty-init.js
@@ -0,0 +1,41 @@
+// This file was procedurally generated from the following sources:
+// - src/dstr-binding/ary-ptrn-elem-ary-empty-init.case
+// - src/dstr-binding/default/const-stmt.template
+/*---
+description: BindingElement with array binding pattern and initializer is used (`const` statement)
+esid: sec-let-and-const-declarations-runtime-semantics-evaluation
+features: [generators, destructuring-binding]
+flags: [generated]
+info: |
+ LexicalBinding : BindingPattern Initializer
+
+ 1. Let rhs be the result of evaluating Initializer.
+ 2. Let value be GetValue(rhs).
+ 3. ReturnIfAbrupt(value).
+ 4. Let env be the running execution context's LexicalEnvironment.
+ 5. Return the result of performing BindingInitialization for BindingPattern
+ using value and env as the arguments.
+
+ 13.3.3.6 Runtime Semantics: IteratorBindingInitialization
+
+ BindingElement : BindingPatternInitializer opt
+
+ [...]
+ 2. If iteratorRecord.[[done]] is true, let v be undefined.
+ 3. If Initializer is present and v is undefined, then
+ a. Let defaultValue be the result of evaluating Initializer.
+ b. Let v be ? GetValue(defaultValue).
+ 4. Return the result of performing BindingInitialization of BindingPattern
+ with v and environment as the arguments.
+
+---*/
+var initCount = 0;
+var iterCount = 0;
+var iter = function*() { iterCount += 1; }();
+
+const [[] = function() { initCount += 1; return iter; }()] = [];
+
+assert.sameValue(initCount, 1);
+assert.sameValue(iterCount, 0);
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/language/statements/const/dstr/ary-ptrn-elem-ary-empty-iter.js b/js/src/tests/test262/language/statements/const/dstr/ary-ptrn-elem-ary-empty-iter.js
new file mode 100644
index 0000000000..1cc79baa30
--- /dev/null
+++ b/js/src/tests/test262/language/statements/const/dstr/ary-ptrn-elem-ary-empty-iter.js
@@ -0,0 +1,38 @@
+// This file was procedurally generated from the following sources:
+// - src/dstr-binding/ary-ptrn-elem-ary-empty-iter.case
+// - src/dstr-binding/default/const-stmt.template
+/*---
+description: BindingElement with array binding pattern and initializer is not used (`const` statement)
+esid: sec-let-and-const-declarations-runtime-semantics-evaluation
+features: [destructuring-binding]
+flags: [generated]
+info: |
+ LexicalBinding : BindingPattern Initializer
+
+ 1. Let rhs be the result of evaluating Initializer.
+ 2. Let value be GetValue(rhs).
+ 3. ReturnIfAbrupt(value).
+ 4. Let env be the running execution context's LexicalEnvironment.
+ 5. Return the result of performing BindingInitialization for BindingPattern
+ using value and env as the arguments.
+
+ 13.3.3.6 Runtime Semantics: IteratorBindingInitialization
+
+ BindingElement : BindingPatternInitializer opt
+
+ 1. If iteratorRecord.[[done]] is false, then
+ a. Let next be IteratorStep(iteratorRecord.[[iterator]]).
+ [...]
+ e. Else,
+ i. Let v be IteratorValue(next).
+ [...]
+ 4. Return the result of performing BindingInitialization of BindingPattern
+ with v and environment as the arguments.
+---*/
+var initCount = 0;
+
+const [[] = function() { initCount += 1; }()] = [[23]];
+
+assert.sameValue(initCount, 0);
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/language/statements/const/dstr/ary-ptrn-elem-ary-rest-init.js b/js/src/tests/test262/language/statements/const/dstr/ary-ptrn-elem-ary-rest-init.js
new file mode 100644
index 0000000000..f2b899743f
--- /dev/null
+++ b/js/src/tests/test262/language/statements/const/dstr/ary-ptrn-elem-ary-rest-init.js
@@ -0,0 +1,42 @@
+// This file was procedurally generated from the following sources:
+// - src/dstr-binding/ary-ptrn-elem-ary-rest-init.case
+// - src/dstr-binding/default/const-stmt.template
+/*---
+description: BindingElement with array binding pattern and initializer is used (`const` statement)
+esid: sec-let-and-const-declarations-runtime-semantics-evaluation
+features: [destructuring-binding]
+flags: [generated]
+info: |
+ LexicalBinding : BindingPattern Initializer
+
+ 1. Let rhs be the result of evaluating Initializer.
+ 2. Let value be GetValue(rhs).
+ 3. ReturnIfAbrupt(value).
+ 4. Let env be the running execution context's LexicalEnvironment.
+ 5. Return the result of performing BindingInitialization for BindingPattern
+ using value and env as the arguments.
+
+ 13.3.3.6 Runtime Semantics: IteratorBindingInitialization
+
+ BindingElement : BindingPatternInitializer opt
+
+ [...]
+ 2. If iteratorRecord.[[done]] is true, let v be undefined.
+ 3. If Initializer is present and v is undefined, then
+ a. Let defaultValue be the result of evaluating Initializer.
+ b. Let v be ? GetValue(defaultValue).
+ 4. Return the result of performing BindingInitialization of BindingPattern
+ with v and environment as the arguments.
+---*/
+var values = [2, 1, 3];
+
+const [[...x] = values] = [];
+
+assert(Array.isArray(x));
+assert.sameValue(x[0], 2);
+assert.sameValue(x[1], 1);
+assert.sameValue(x[2], 3);
+assert.sameValue(x.length, 3);
+assert.notSameValue(x, values);
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/language/statements/const/dstr/ary-ptrn-elem-ary-rest-iter.js b/js/src/tests/test262/language/statements/const/dstr/ary-ptrn-elem-ary-rest-iter.js
new file mode 100644
index 0000000000..b7272cf8f9
--- /dev/null
+++ b/js/src/tests/test262/language/statements/const/dstr/ary-ptrn-elem-ary-rest-iter.js
@@ -0,0 +1,45 @@
+// This file was procedurally generated from the following sources:
+// - src/dstr-binding/ary-ptrn-elem-ary-rest-iter.case
+// - src/dstr-binding/default/const-stmt.template
+/*---
+description: BindingElement with array binding pattern and initializer is not used (`const` statement)
+esid: sec-let-and-const-declarations-runtime-semantics-evaluation
+features: [destructuring-binding]
+flags: [generated]
+info: |
+ LexicalBinding : BindingPattern Initializer
+
+ 1. Let rhs be the result of evaluating Initializer.
+ 2. Let value be GetValue(rhs).
+ 3. ReturnIfAbrupt(value).
+ 4. Let env be the running execution context's LexicalEnvironment.
+ 5. Return the result of performing BindingInitialization for BindingPattern
+ using value and env as the arguments.
+
+ 13.3.3.6 Runtime Semantics: IteratorBindingInitialization
+
+ BindingElement : BindingPatternInitializer opt
+
+ 1. If iteratorRecord.[[done]] is false, then
+ a. Let next be IteratorStep(iteratorRecord.[[iterator]]).
+ [...]
+ e. Else,
+ i. Let v be IteratorValue(next).
+ [...]
+ 4. Return the result of performing BindingInitialization of BindingPattern
+ with v and environment as the arguments.
+---*/
+var values = [2, 1, 3];
+var initCount = 0;
+
+const [[...x] = function() { initCount += 1; }()] = [values];
+
+assert(Array.isArray(x));
+assert.sameValue(x[0], 2);
+assert.sameValue(x[1], 1);
+assert.sameValue(x[2], 3);
+assert.sameValue(x.length, 3);
+assert.notSameValue(x, values);
+assert.sameValue(initCount, 0);
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/language/statements/const/dstr/ary-ptrn-elem-ary-val-null.js b/js/src/tests/test262/language/statements/const/dstr/ary-ptrn-elem-ary-val-null.js
new file mode 100644
index 0000000000..3b94cbe498
--- /dev/null
+++ b/js/src/tests/test262/language/statements/const/dstr/ary-ptrn-elem-ary-val-null.js
@@ -0,0 +1,43 @@
+// This file was procedurally generated from the following sources:
+// - src/dstr-binding/ary-ptrn-elem-ary-val-null.case
+// - src/dstr-binding/error/const-stmt.template
+/*---
+description: Nested array destructuring with a null value (`const` statement)
+esid: sec-let-and-const-declarations-runtime-semantics-evaluation
+features: [destructuring-binding]
+flags: [generated]
+info: |
+ LexicalBinding : BindingPattern Initializer
+
+ 1. Let rhs be the result of evaluating Initializer.
+ 2. Let value be GetValue(rhs).
+ 3. ReturnIfAbrupt(value).
+ 4. Let env be the running execution context's LexicalEnvironment.
+ 5. Return the result of performing BindingInitialization for BindingPattern
+ using value and env as the arguments.
+
+ 13.3.3.6 Runtime Semantics: IteratorBindingInitialization
+
+ BindingElement : BindingPattern Initializeropt
+
+ 1. If iteratorRecord.[[done]] is false, then
+ [...]
+ e. Else
+ i. Let v be IteratorValue(next).
+ [...]
+ 4. Return the result of performing BindingInitialization of BindingPattern
+ with v and environment as the arguments.
+
+ 13.3.3.5 Runtime Semantics: BindingInitialization
+
+ BindingPattern : ArrayBindingPattern
+
+ 1. Let iterator be GetIterator(value).
+ 2. ReturnIfAbrupt(iterator).
+---*/
+
+assert.throws(TypeError, function() {
+ const [[x]] = [null];
+});
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/language/statements/const/dstr/ary-ptrn-elem-id-init-exhausted.js b/js/src/tests/test262/language/statements/const/dstr/ary-ptrn-elem-id-init-exhausted.js
new file mode 100644
index 0000000000..53d87cdb38
--- /dev/null
+++ b/js/src/tests/test262/language/statements/const/dstr/ary-ptrn-elem-id-init-exhausted.js
@@ -0,0 +1,37 @@
+// This file was procedurally generated from the following sources:
+// - src/dstr-binding/ary-ptrn-elem-id-init-exhausted.case
+// - src/dstr-binding/default/const-stmt.template
+/*---
+description: Destructuring initializer with an exhausted iterator (`const` statement)
+esid: sec-let-and-const-declarations-runtime-semantics-evaluation
+features: [destructuring-binding]
+flags: [generated]
+info: |
+ LexicalBinding : BindingPattern Initializer
+
+ 1. Let rhs be the result of evaluating Initializer.
+ 2. Let value be GetValue(rhs).
+ 3. ReturnIfAbrupt(value).
+ 4. Let env be the running execution context's LexicalEnvironment.
+ 5. Return the result of performing BindingInitialization for BindingPattern
+ using value and env as the arguments.
+
+ 13.3.3.6 Runtime Semantics: IteratorBindingInitialization
+
+ SingleNameBinding : BindingIdentifier Initializeropt
+
+ [...]
+ 5. If iteratorRecord.[[done]] is true, let v be undefined.
+ 6. If Initializer is present and v is undefined, then
+ a. Let defaultValue be the result of evaluating Initializer.
+ b. Let v be GetValue(defaultValue).
+ [...]
+ 7. If environment is undefined, return PutValue(lhs, v).
+ 8. Return InitializeReferencedBinding(lhs, v).
+---*/
+
+const [x = 23] = [];
+
+assert.sameValue(x, 23);
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/language/statements/const/dstr/ary-ptrn-elem-id-init-fn-name-arrow.js b/js/src/tests/test262/language/statements/const/dstr/ary-ptrn-elem-id-init-fn-name-arrow.js
new file mode 100644
index 0000000000..e088e499f9
--- /dev/null
+++ b/js/src/tests/test262/language/statements/const/dstr/ary-ptrn-elem-id-init-fn-name-arrow.js
@@ -0,0 +1,38 @@
+// This file was procedurally generated from the following sources:
+// - src/dstr-binding/ary-ptrn-elem-id-init-fn-name-arrow.case
+// - src/dstr-binding/default/const-stmt.template
+/*---
+description: SingleNameBinding does assign name to arrow functions (`const` statement)
+esid: sec-let-and-const-declarations-runtime-semantics-evaluation
+features: [destructuring-binding]
+flags: [generated]
+info: |
+ LexicalBinding : BindingPattern Initializer
+
+ 1. Let rhs be the result of evaluating Initializer.
+ 2. Let value be GetValue(rhs).
+ 3. ReturnIfAbrupt(value).
+ 4. Let env be the running execution context's LexicalEnvironment.
+ 5. Return the result of performing BindingInitialization for BindingPattern
+ using value and env as the arguments.
+
+ 13.3.3.6 Runtime Semantics: IteratorBindingInitialization
+
+ SingleNameBinding : BindingIdentifier Initializeropt
+
+ [...]
+ 6. If Initializer is present and v is undefined, then
+ a. Let defaultValue be the result of evaluating Initializer.
+ b. Let v be GetValue(defaultValue).
+ c. ReturnIfAbrupt(v).
+ d. If IsAnonymousFunctionDefinition(Initializer) is true, then
+ [...]
+ 7. If environment is undefined, return PutValue(lhs, v).
+ 8. Return InitializeReferencedBinding(lhs, v).
+---*/
+
+const [arrow = () => {}] = [];
+
+assert.sameValue(arrow.name, 'arrow');
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/language/statements/const/dstr/ary-ptrn-elem-id-init-fn-name-class.js b/js/src/tests/test262/language/statements/const/dstr/ary-ptrn-elem-id-init-fn-name-class.js
new file mode 100644
index 0000000000..57bbfba0f7
--- /dev/null
+++ b/js/src/tests/test262/language/statements/const/dstr/ary-ptrn-elem-id-init-fn-name-class.js
@@ -0,0 +1,40 @@
+// This file was procedurally generated from the following sources:
+// - src/dstr-binding/ary-ptrn-elem-id-init-fn-name-class.case
+// - src/dstr-binding/default/const-stmt.template
+/*---
+description: SingleNameBinding assigns `name` to "anonymous" classes (`const` statement)
+esid: sec-let-and-const-declarations-runtime-semantics-evaluation
+features: [destructuring-binding]
+flags: [generated]
+info: |
+ LexicalBinding : BindingPattern Initializer
+
+ 1. Let rhs be the result of evaluating Initializer.
+ 2. Let value be GetValue(rhs).
+ 3. ReturnIfAbrupt(value).
+ 4. Let env be the running execution context's LexicalEnvironment.
+ 5. Return the result of performing BindingInitialization for BindingPattern
+ using value and env as the arguments.
+
+ 13.3.3.6 Runtime Semantics: IteratorBindingInitialization
+
+ SingleNameBinding : BindingIdentifier Initializeropt
+
+ [...]
+ 6. If Initializer is present and v is undefined, then
+ a. Let defaultValue be the result of evaluating Initializer.
+ b. Let v be GetValue(defaultValue).
+ c. ReturnIfAbrupt(v).
+ d. If IsAnonymousFunctionDefinition(Initializer) is true, then
+ [...]
+ 7. If environment is undefined, return PutValue(lhs, v).
+ 8. Return InitializeReferencedBinding(lhs, v).
+---*/
+
+const [cls = class {}, xCls = class X {}, xCls2 = class { static name() {} }] = [];
+
+assert.sameValue(cls.name, 'cls');
+assert.notSameValue(xCls.name, 'xCls');
+assert.notSameValue(xCls2.name, 'xCls2');
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/language/statements/const/dstr/ary-ptrn-elem-id-init-fn-name-cover.js b/js/src/tests/test262/language/statements/const/dstr/ary-ptrn-elem-id-init-fn-name-cover.js
new file mode 100644
index 0000000000..393e0209fc
--- /dev/null
+++ b/js/src/tests/test262/language/statements/const/dstr/ary-ptrn-elem-id-init-fn-name-cover.js
@@ -0,0 +1,39 @@
+// This file was procedurally generated from the following sources:
+// - src/dstr-binding/ary-ptrn-elem-id-init-fn-name-cover.case
+// - src/dstr-binding/default/const-stmt.template
+/*---
+description: SingleNameBinding does assign name to "anonymous" functions "through" cover grammar (`const` statement)
+esid: sec-let-and-const-declarations-runtime-semantics-evaluation
+features: [destructuring-binding]
+flags: [generated]
+info: |
+ LexicalBinding : BindingPattern Initializer
+
+ 1. Let rhs be the result of evaluating Initializer.
+ 2. Let value be GetValue(rhs).
+ 3. ReturnIfAbrupt(value).
+ 4. Let env be the running execution context's LexicalEnvironment.
+ 5. Return the result of performing BindingInitialization for BindingPattern
+ using value and env as the arguments.
+
+ 13.3.3.6 Runtime Semantics: IteratorBindingInitialization
+
+ SingleNameBinding : BindingIdentifier Initializeropt
+
+ [...]
+ 6. If Initializer is present and v is undefined, then
+ a. Let defaultValue be the result of evaluating Initializer.
+ b. Let v be GetValue(defaultValue).
+ c. ReturnIfAbrupt(v).
+ d. If IsAnonymousFunctionDefinition(Initializer) is true, then
+ [...]
+ 7. If environment is undefined, return PutValue(lhs, v).
+ 8. Return InitializeReferencedBinding(lhs, v).
+---*/
+
+const [cover = (function () {}), xCover = (0, function() {})] = [];
+
+assert.sameValue(cover.name, 'cover');
+assert.notSameValue(xCover.name, 'xCover');
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/language/statements/const/dstr/ary-ptrn-elem-id-init-fn-name-fn.js b/js/src/tests/test262/language/statements/const/dstr/ary-ptrn-elem-id-init-fn-name-fn.js
new file mode 100644
index 0000000000..ae22ac73c6
--- /dev/null
+++ b/js/src/tests/test262/language/statements/const/dstr/ary-ptrn-elem-id-init-fn-name-fn.js
@@ -0,0 +1,39 @@
+// This file was procedurally generated from the following sources:
+// - src/dstr-binding/ary-ptrn-elem-id-init-fn-name-fn.case
+// - src/dstr-binding/default/const-stmt.template
+/*---
+description: SingleNameBinding assigns name to "anonymous" functions (`const` statement)
+esid: sec-let-and-const-declarations-runtime-semantics-evaluation
+features: [destructuring-binding]
+flags: [generated]
+info: |
+ LexicalBinding : BindingPattern Initializer
+
+ 1. Let rhs be the result of evaluating Initializer.
+ 2. Let value be GetValue(rhs).
+ 3. ReturnIfAbrupt(value).
+ 4. Let env be the running execution context's LexicalEnvironment.
+ 5. Return the result of performing BindingInitialization for BindingPattern
+ using value and env as the arguments.
+
+ 13.3.3.6 Runtime Semantics: IteratorBindingInitialization
+
+ SingleNameBinding : BindingIdentifier Initializeropt
+
+ [...]
+ 6. If Initializer is present and v is undefined, then
+ a. Let defaultValue be the result of evaluating Initializer.
+ b. Let v be GetValue(defaultValue).
+ c. ReturnIfAbrupt(v).
+ d. If IsAnonymousFunctionDefinition(Initializer) is true, then
+ [...]
+ 7. If environment is undefined, return PutValue(lhs, v).
+ 8. Return InitializeReferencedBinding(lhs, v).
+---*/
+
+const [fn = function () {}, xFn = function x() {}] = [];
+
+assert.sameValue(fn.name, 'fn');
+assert.notSameValue(xFn.name, 'xFn');
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/language/statements/const/dstr/ary-ptrn-elem-id-init-fn-name-gen.js b/js/src/tests/test262/language/statements/const/dstr/ary-ptrn-elem-id-init-fn-name-gen.js
new file mode 100644
index 0000000000..1352e09484
--- /dev/null
+++ b/js/src/tests/test262/language/statements/const/dstr/ary-ptrn-elem-id-init-fn-name-gen.js
@@ -0,0 +1,40 @@
+// This file was procedurally generated from the following sources:
+// - src/dstr-binding/ary-ptrn-elem-id-init-fn-name-gen.case
+// - src/dstr-binding/default/const-stmt.template
+/*---
+description: SingleNameBinding assigns name to "anonymous" generator functions (`const` statement)
+esid: sec-let-and-const-declarations-runtime-semantics-evaluation
+features: [generators, destructuring-binding]
+flags: [generated]
+info: |
+ LexicalBinding : BindingPattern Initializer
+
+ 1. Let rhs be the result of evaluating Initializer.
+ 2. Let value be GetValue(rhs).
+ 3. ReturnIfAbrupt(value).
+ 4. Let env be the running execution context's LexicalEnvironment.
+ 5. Return the result of performing BindingInitialization for BindingPattern
+ using value and env as the arguments.
+
+ 13.3.3.6 Runtime Semantics: IteratorBindingInitialization
+
+ SingleNameBinding : BindingIdentifier Initializeropt
+
+ [...]
+ 6. If Initializer is present and v is undefined, then
+ a. Let defaultValue be the result of evaluating Initializer.
+ b. Let v be GetValue(defaultValue).
+ c. ReturnIfAbrupt(v).
+ d. If IsAnonymousFunctionDefinition(Initializer) is true, then
+ [...]
+ 7. If environment is undefined, return PutValue(lhs, v).
+ 8. Return InitializeReferencedBinding(lhs, v).
+
+---*/
+
+const [gen = function* () {}, xGen = function* x() {}] = [];
+
+assert.sameValue(gen.name, 'gen');
+assert.notSameValue(xGen.name, 'xGen');
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/language/statements/const/dstr/ary-ptrn-elem-id-init-hole.js b/js/src/tests/test262/language/statements/const/dstr/ary-ptrn-elem-id-init-hole.js
new file mode 100644
index 0000000000..58abd5fde1
--- /dev/null
+++ b/js/src/tests/test262/language/statements/const/dstr/ary-ptrn-elem-id-init-hole.js
@@ -0,0 +1,33 @@
+// This file was procedurally generated from the following sources:
+// - src/dstr-binding/ary-ptrn-elem-id-init-hole.case
+// - src/dstr-binding/default/const-stmt.template
+/*---
+description: Destructuring initializer with a "hole" (`const` statement)
+esid: sec-let-and-const-declarations-runtime-semantics-evaluation
+features: [destructuring-binding]
+flags: [generated]
+info: |
+ LexicalBinding : BindingPattern Initializer
+
+ 1. Let rhs be the result of evaluating Initializer.
+ 2. Let value be GetValue(rhs).
+ 3. ReturnIfAbrupt(value).
+ 4. Let env be the running execution context's LexicalEnvironment.
+ 5. Return the result of performing BindingInitialization for BindingPattern
+ using value and env as the arguments.
+
+ 13.3.3.6 Runtime Semantics: IteratorBindingInitialization
+ SingleNameBinding : BindingIdentifier Initializeropt
+ [...] 6. If Initializer is present and v is undefined, then
+ a. Let defaultValue be the result of evaluating Initializer.
+ b. Let v be GetValue(defaultValue).
+ [...]
+ 7. If environment is undefined, return PutValue(lhs, v). 8. Return InitializeReferencedBinding(lhs, v).
+---*/
+
+const [x = 23] = [,];
+
+assert.sameValue(x, 23);
+// another statement
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/language/statements/const/dstr/ary-ptrn-elem-id-init-skipped.js b/js/src/tests/test262/language/statements/const/dstr/ary-ptrn-elem-id-init-skipped.js
new file mode 100644
index 0000000000..2afde0480a
--- /dev/null
+++ b/js/src/tests/test262/language/statements/const/dstr/ary-ptrn-elem-id-init-skipped.js
@@ -0,0 +1,42 @@
+// This file was procedurally generated from the following sources:
+// - src/dstr-binding/ary-ptrn-elem-id-init-skipped.case
+// - src/dstr-binding/default/const-stmt.template
+/*---
+description: Destructuring initializer is not evaluated when value is not `undefined` (`const` statement)
+esid: sec-let-and-const-declarations-runtime-semantics-evaluation
+features: [destructuring-binding]
+flags: [generated]
+info: |
+ LexicalBinding : BindingPattern Initializer
+
+ 1. Let rhs be the result of evaluating Initializer.
+ 2. Let value be GetValue(rhs).
+ 3. ReturnIfAbrupt(value).
+ 4. Let env be the running execution context's LexicalEnvironment.
+ 5. Return the result of performing BindingInitialization for BindingPattern
+ using value and env as the arguments.
+
+ 13.3.3.6 Runtime Semantics: IteratorBindingInitialization
+
+ SingleNameBinding : BindingIdentifier Initializeropt
+
+ [...]
+ 6. If Initializer is present and v is undefined, then
+ [...]
+ 7. If environment is undefined, return PutValue(lhs, v).
+ 8. Return InitializeReferencedBinding(lhs, v).
+---*/
+var initCount = 0;
+function counter() {
+ initCount += 1;
+}
+
+const [w = counter(), x = counter(), y = counter(), z = counter()] = [null, 0, false, ''];
+
+assert.sameValue(w, null);
+assert.sameValue(x, 0);
+assert.sameValue(y, false);
+assert.sameValue(z, '');
+assert.sameValue(initCount, 0);
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/language/statements/const/dstr/ary-ptrn-elem-id-init-throws.js b/js/src/tests/test262/language/statements/const/dstr/ary-ptrn-elem-id-init-throws.js
new file mode 100644
index 0000000000..6eab6e5aed
--- /dev/null
+++ b/js/src/tests/test262/language/statements/const/dstr/ary-ptrn-elem-id-init-throws.js
@@ -0,0 +1,34 @@
+// This file was procedurally generated from the following sources:
+// - src/dstr-binding/ary-ptrn-elem-id-init-throws.case
+// - src/dstr-binding/error/const-stmt.template
+/*---
+description: Destructuring initializer returns an abrupt completion (`const` statement)
+esid: sec-let-and-const-declarations-runtime-semantics-evaluation
+features: [destructuring-binding]
+flags: [generated]
+info: |
+ LexicalBinding : BindingPattern Initializer
+
+ 1. Let rhs be the result of evaluating Initializer.
+ 2. Let value be GetValue(rhs).
+ 3. ReturnIfAbrupt(value).
+ 4. Let env be the running execution context's LexicalEnvironment.
+ 5. Return the result of performing BindingInitialization for BindingPattern
+ using value and env as the arguments.
+
+ 13.3.3.6 Runtime Semantics: IteratorBindingInitialization
+
+ SingleNameBinding : BindingIdentifier Initializeropt
+
+ [...]
+ 6. If Initializer is present and v is undefined, then
+ a. Let defaultValue be the result of evaluating Initializer.
+ b. Let v be GetValue(defaultValue).
+ c. ReturnIfAbrupt(v).
+---*/
+
+assert.throws(Test262Error, function() {
+ const [x = (function() { throw new Test262Error(); })()] = [undefined];
+});
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/language/statements/const/dstr/ary-ptrn-elem-id-init-undef.js b/js/src/tests/test262/language/statements/const/dstr/ary-ptrn-elem-id-init-undef.js
new file mode 100644
index 0000000000..35793e89af
--- /dev/null
+++ b/js/src/tests/test262/language/statements/const/dstr/ary-ptrn-elem-id-init-undef.js
@@ -0,0 +1,36 @@
+// This file was procedurally generated from the following sources:
+// - src/dstr-binding/ary-ptrn-elem-id-init-undef.case
+// - src/dstr-binding/default/const-stmt.template
+/*---
+description: Destructuring initializer with an undefined value (`const` statement)
+esid: sec-let-and-const-declarations-runtime-semantics-evaluation
+features: [destructuring-binding]
+flags: [generated]
+info: |
+ LexicalBinding : BindingPattern Initializer
+
+ 1. Let rhs be the result of evaluating Initializer.
+ 2. Let value be GetValue(rhs).
+ 3. ReturnIfAbrupt(value).
+ 4. Let env be the running execution context's LexicalEnvironment.
+ 5. Return the result of performing BindingInitialization for BindingPattern
+ using value and env as the arguments.
+
+ 13.3.3.6 Runtime Semantics: IteratorBindingInitialization
+
+ SingleNameBinding : BindingIdentifier Initializeropt
+
+ [...]
+ 6. If Initializer is present and v is undefined, then
+ a. Let defaultValue be the result of evaluating Initializer.
+ b. Let v be GetValue(defaultValue).
+ [...]
+ 7. If environment is undefined, return PutValue(lhs, v).
+ 8. Return InitializeReferencedBinding(lhs, v).
+---*/
+
+const [x = 23] = [undefined];
+
+assert.sameValue(x, 23);
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/language/statements/const/dstr/ary-ptrn-elem-id-init-unresolvable.js b/js/src/tests/test262/language/statements/const/dstr/ary-ptrn-elem-id-init-unresolvable.js
new file mode 100644
index 0000000000..7e052d0cb5
--- /dev/null
+++ b/js/src/tests/test262/language/statements/const/dstr/ary-ptrn-elem-id-init-unresolvable.js
@@ -0,0 +1,41 @@
+// This file was procedurally generated from the following sources:
+// - src/dstr-binding/ary-ptrn-elem-id-init-unresolvable.case
+// - src/dstr-binding/error/const-stmt.template
+/*---
+description: Destructuring initializer is an unresolvable reference (`const` statement)
+esid: sec-let-and-const-declarations-runtime-semantics-evaluation
+features: [destructuring-binding]
+flags: [generated]
+info: |
+ LexicalBinding : BindingPattern Initializer
+
+ 1. Let rhs be the result of evaluating Initializer.
+ 2. Let value be GetValue(rhs).
+ 3. ReturnIfAbrupt(value).
+ 4. Let env be the running execution context's LexicalEnvironment.
+ 5. Return the result of performing BindingInitialization for BindingPattern
+ using value and env as the arguments.
+
+ 13.3.3.6 Runtime Semantics: IteratorBindingInitialization
+
+ SingleNameBinding : BindingIdentifier Initializeropt
+
+ [...]
+ 6. If Initializer is present and v is undefined, then
+ a. Let defaultValue be the result of evaluating Initializer.
+ b. Let v be GetValue(defaultValue).
+ c. ReturnIfAbrupt(v).
+
+ 6.2.3.1 GetValue (V)
+
+ 1. ReturnIfAbrupt(V).
+ 2. If Type(V) is not Reference, return V.
+ 3. Let base be GetBase(V).
+ 4. If IsUnresolvableReference(V), throw a ReferenceError exception.
+---*/
+
+assert.throws(ReferenceError, function() {
+ const [ x = unresolvableReference ] = [];
+});
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/language/statements/const/dstr/ary-ptrn-elem-id-iter-complete.js b/js/src/tests/test262/language/statements/const/dstr/ary-ptrn-elem-id-iter-complete.js
new file mode 100644
index 0000000000..8b4fe992f0
--- /dev/null
+++ b/js/src/tests/test262/language/statements/const/dstr/ary-ptrn-elem-id-iter-complete.js
@@ -0,0 +1,40 @@
+// This file was procedurally generated from the following sources:
+// - src/dstr-binding/ary-ptrn-elem-id-iter-complete.case
+// - src/dstr-binding/default/const-stmt.template
+/*---
+description: SingleNameBinding when value iteration completes (`const` statement)
+esid: sec-let-and-const-declarations-runtime-semantics-evaluation
+features: [destructuring-binding]
+flags: [generated]
+info: |
+ LexicalBinding : BindingPattern Initializer
+
+ 1. Let rhs be the result of evaluating Initializer.
+ 2. Let value be GetValue(rhs).
+ 3. ReturnIfAbrupt(value).
+ 4. Let env be the running execution context's LexicalEnvironment.
+ 5. Return the result of performing BindingInitialization for BindingPattern
+ using value and env as the arguments.
+
+ 13.3.3.6 Runtime Semantics: IteratorBindingInitialization
+
+ SingleNameBinding : BindingIdentifier Initializeropt
+
+ [...]
+ 4. If iteratorRecord.[[done]] is false, then
+ a. Let next be IteratorStep(iteratorRecord.[[iterator]]).
+ b. If next is an abrupt completion, set iteratorRecord.[[done]] to true.
+ c. ReturnIfAbrupt(next).
+ d. If next is false, set iteratorRecord.[[done]] to true.
+ e. Else,
+ [...]
+ 5. If iteratorRecord.[[done]] is true, let v be undefined.
+ [...]
+ 8. Return InitializeReferencedBinding(lhs, v).
+---*/
+
+const [x] = [];
+
+assert.sameValue(x, undefined);
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/language/statements/const/dstr/ary-ptrn-elem-id-iter-done.js b/js/src/tests/test262/language/statements/const/dstr/ary-ptrn-elem-id-iter-done.js
new file mode 100644
index 0000000000..36b8c01a70
--- /dev/null
+++ b/js/src/tests/test262/language/statements/const/dstr/ary-ptrn-elem-id-iter-done.js
@@ -0,0 +1,35 @@
+// This file was procedurally generated from the following sources:
+// - src/dstr-binding/ary-ptrn-elem-id-iter-done.case
+// - src/dstr-binding/default/const-stmt.template
+/*---
+description: SingleNameBinding when value iteration was completed previously (`const` statement)
+esid: sec-let-and-const-declarations-runtime-semantics-evaluation
+features: [destructuring-binding]
+flags: [generated]
+info: |
+ LexicalBinding : BindingPattern Initializer
+
+ 1. Let rhs be the result of evaluating Initializer.
+ 2. Let value be GetValue(rhs).
+ 3. ReturnIfAbrupt(value).
+ 4. Let env be the running execution context's LexicalEnvironment.
+ 5. Return the result of performing BindingInitialization for BindingPattern
+ using value and env as the arguments.
+
+ 13.3.3.6 Runtime Semantics: IteratorBindingInitialization
+
+ SingleNameBinding : BindingIdentifier Initializeropt
+
+ [...]
+ 4. If iteratorRecord.[[done]] is false, then
+ [...]
+ 5. If iteratorRecord.[[done]] is true, let v be undefined.
+ [...]
+ 8. Return InitializeReferencedBinding(lhs, v).
+---*/
+
+const [_, x] = [];
+
+assert.sameValue(x, undefined);
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/language/statements/const/dstr/ary-ptrn-elem-id-iter-step-err.js b/js/src/tests/test262/language/statements/const/dstr/ary-ptrn-elem-id-iter-step-err.js
new file mode 100644
index 0000000000..e50cc30803
--- /dev/null
+++ b/js/src/tests/test262/language/statements/const/dstr/ary-ptrn-elem-id-iter-step-err.js
@@ -0,0 +1,43 @@
+// This file was procedurally generated from the following sources:
+// - src/dstr-binding/ary-ptrn-elem-id-iter-step-err.case
+// - src/dstr-binding/error/const-stmt.template
+/*---
+description: Error forwarding when IteratorStep returns an abrupt completion (`const` statement)
+esid: sec-let-and-const-declarations-runtime-semantics-evaluation
+features: [Symbol.iterator, destructuring-binding]
+flags: [generated]
+info: |
+ LexicalBinding : BindingPattern Initializer
+
+ 1. Let rhs be the result of evaluating Initializer.
+ 2. Let value be GetValue(rhs).
+ 3. ReturnIfAbrupt(value).
+ 4. Let env be the running execution context's LexicalEnvironment.
+ 5. Return the result of performing BindingInitialization for BindingPattern
+ using value and env as the arguments.
+
+ 13.3.3.6 Runtime Semantics: IteratorBindingInitialization
+
+ SingleNameBinding : BindingIdentifier Initializeropt
+
+ [...]
+ 4. If iteratorRecord.[[done]] is false, then
+ a. Let next be IteratorStep(iteratorRecord.[[iterator]]).
+ b. If next is an abrupt completion, set iteratorRecord.[[done]] to true.
+ c. ReturnIfAbrupt(next).
+
+---*/
+var g = {};
+g[Symbol.iterator] = function() {
+ return {
+ next: function() {
+ throw new Test262Error();
+ }
+ };
+};
+
+assert.throws(Test262Error, function() {
+ const [x] = g;
+});
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/language/statements/const/dstr/ary-ptrn-elem-id-iter-val-array-prototype.js b/js/src/tests/test262/language/statements/const/dstr/ary-ptrn-elem-id-iter-val-array-prototype.js
new file mode 100644
index 0000000000..398da85705
--- /dev/null
+++ b/js/src/tests/test262/language/statements/const/dstr/ary-ptrn-elem-id-iter-val-array-prototype.js
@@ -0,0 +1,56 @@
+// This file was procedurally generated from the following sources:
+// - src/dstr-binding/ary-ptrn-elem-id-iter-val-array-prototype.case
+// - src/dstr-binding/default/const-stmt.template
+/*---
+description: Array destructuring uses overriden Array.prototype[Symbol.iterator] (`const` statement)
+esid: sec-let-and-const-declarations-runtime-semantics-evaluation
+features: [Symbol.iterator, generators, destructuring-binding]
+flags: [generated]
+info: |
+ LexicalBinding : BindingPattern Initializer
+
+ 1. Let rhs be the result of evaluating Initializer.
+ 2. Let value be GetValue(rhs).
+ 3. ReturnIfAbrupt(value).
+ 4. Let env be the running execution context's LexicalEnvironment.
+ 5. Return the result of performing BindingInitialization for BindingPattern
+ using value and env as the arguments.
+
+ Runtime Semantics: IteratorBindingInitialization
+
+ SingleNameBinding : BindingIdentifier Initializer_opt
+
+ 1. Let bindingId be StringValue of BindingIdentifier.
+ 2. Let lhs be ? ResolveBinding(bindingId, environment).
+ 3. If iteratorRecord.[[Done]] is false, then
+ a. Let next be IteratorStep(iteratorRecord).
+ b. If next is an abrupt completion, set iteratorRecord.[[Done]] to true.
+ c. ReturnIfAbrupt(next).
+ d. If next is false, set iteratorRecord.[[Done]] to true.
+ e. Else,
+ i. Let v be IteratorValue(next).
+ ii. If v is an abrupt completion, set iteratorRecord.[[Done]] to true.
+ iii. ReturnIfAbrupt(v).
+ [...]
+ 7. Return InitializeReferencedBinding(lhs, v).
+
+---*/
+Array.prototype[Symbol.iterator] = function* () {
+ if (this.length > 0) {
+ yield this[0];
+ }
+ if (this.length > 1) {
+ yield this[1];
+ }
+ if (this.length > 2) {
+ yield 42;
+ }
+};
+
+const [x, y, z] = [1, 2, 3];
+
+assert.sameValue(x, 1);
+assert.sameValue(y, 2);
+assert.sameValue(z, 42);
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/language/statements/const/dstr/ary-ptrn-elem-id-iter-val-err.js b/js/src/tests/test262/language/statements/const/dstr/ary-ptrn-elem-id-iter-val-err.js
new file mode 100644
index 0000000000..404f8a0ce7
--- /dev/null
+++ b/js/src/tests/test262/language/statements/const/dstr/ary-ptrn-elem-id-iter-val-err.js
@@ -0,0 +1,54 @@
+// This file was procedurally generated from the following sources:
+// - src/dstr-binding/ary-ptrn-elem-id-iter-val-err.case
+// - src/dstr-binding/error/const-stmt.template
+/*---
+description: Error forwarding when IteratorValue returns an abrupt completion (`const` statement)
+esid: sec-let-and-const-declarations-runtime-semantics-evaluation
+features: [Symbol.iterator, destructuring-binding]
+flags: [generated]
+info: |
+ LexicalBinding : BindingPattern Initializer
+
+ 1. Let rhs be the result of evaluating Initializer.
+ 2. Let value be GetValue(rhs).
+ 3. ReturnIfAbrupt(value).
+ 4. Let env be the running execution context's LexicalEnvironment.
+ 5. Return the result of performing BindingInitialization for BindingPattern
+ using value and env as the arguments.
+
+ 13.3.3.6 Runtime Semantics: IteratorBindingInitialization
+
+ SingleNameBinding : BindingIdentifier Initializeropt
+
+ [...]
+ 4. If iteratorRecord.[[done]] is false, then
+ a. Let next be IteratorStep(iteratorRecord.[[iterator]]).
+ b. If next is an abrupt completion, set iteratorRecord.[[done]] to true.
+ c. ReturnIfAbrupt(next).
+ d. If next is false, set iteratorRecord.[[done]] to true.
+ e. Else,
+ i. Let v be IteratorValue(next).
+ ii. If v is an abrupt completion, set iteratorRecord.[[done]] to
+ true.
+ iii. ReturnIfAbrupt(v).
+
+---*/
+var poisonedValue = Object.defineProperty({}, 'value', {
+ get: function() {
+ throw new Test262Error();
+ }
+});
+var g = {};
+g[Symbol.iterator] = function() {
+ return {
+ next: function() {
+ return poisonedValue;
+ }
+ };
+};
+
+assert.throws(Test262Error, function() {
+ const [x] = g;
+});
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/language/statements/const/dstr/ary-ptrn-elem-id-iter-val.js b/js/src/tests/test262/language/statements/const/dstr/ary-ptrn-elem-id-iter-val.js
new file mode 100644
index 0000000000..f884729cc6
--- /dev/null
+++ b/js/src/tests/test262/language/statements/const/dstr/ary-ptrn-elem-id-iter-val.js
@@ -0,0 +1,46 @@
+// This file was procedurally generated from the following sources:
+// - src/dstr-binding/ary-ptrn-elem-id-iter-val.case
+// - src/dstr-binding/default/const-stmt.template
+/*---
+description: SingleNameBinding when value iteration was completed previously (`const` statement)
+esid: sec-let-and-const-declarations-runtime-semantics-evaluation
+features: [destructuring-binding]
+flags: [generated]
+info: |
+ LexicalBinding : BindingPattern Initializer
+
+ 1. Let rhs be the result of evaluating Initializer.
+ 2. Let value be GetValue(rhs).
+ 3. ReturnIfAbrupt(value).
+ 4. Let env be the running execution context's LexicalEnvironment.
+ 5. Return the result of performing BindingInitialization for BindingPattern
+ using value and env as the arguments.
+
+ 13.3.3.6 Runtime Semantics: IteratorBindingInitialization
+
+ SingleNameBinding : BindingIdentifier Initializeropt
+
+ [...]
+ 4. If iteratorRecord.[[done]] is false, then
+ a. Let next be IteratorStep(iteratorRecord.[[iterator]]).
+ b. If next is an abrupt completion, set iteratorRecord.[[done]] to true.
+ c. ReturnIfAbrupt(next).
+ d. If next is false, set iteratorRecord.[[done]] to true.
+ e. Else,
+ [...]
+ i. Let v be IteratorValue(next).
+ ii. If v is an abrupt completion, set
+ iteratorRecord.[[done]] to true.
+ iii. ReturnIfAbrupt(v).
+ 5. If iteratorRecord.[[done]] is true, let v be undefined.
+ [...]
+ 8. Return InitializeReferencedBinding(lhs, v).
+---*/
+
+const [x, y, z] = [1, 2, 3];
+
+assert.sameValue(x, 1);
+assert.sameValue(y, 2);
+assert.sameValue(z, 3);
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/language/statements/const/dstr/ary-ptrn-elem-obj-id-init.js b/js/src/tests/test262/language/statements/const/dstr/ary-ptrn-elem-obj-id-init.js
new file mode 100644
index 0000000000..3bf1d61f0e
--- /dev/null
+++ b/js/src/tests/test262/language/statements/const/dstr/ary-ptrn-elem-obj-id-init.js
@@ -0,0 +1,38 @@
+// This file was procedurally generated from the following sources:
+// - src/dstr-binding/ary-ptrn-elem-obj-id-init.case
+// - src/dstr-binding/default/const-stmt.template
+/*---
+description: BindingElement with object binding pattern and initializer is used (`const` statement)
+esid: sec-let-and-const-declarations-runtime-semantics-evaluation
+features: [destructuring-binding]
+flags: [generated]
+info: |
+ LexicalBinding : BindingPattern Initializer
+
+ 1. Let rhs be the result of evaluating Initializer.
+ 2. Let value be GetValue(rhs).
+ 3. ReturnIfAbrupt(value).
+ 4. Let env be the running execution context's LexicalEnvironment.
+ 5. Return the result of performing BindingInitialization for BindingPattern
+ using value and env as the arguments.
+
+ 13.3.3.6 Runtime Semantics: IteratorBindingInitialization
+
+ BindingElement : BindingPatternInitializer opt
+
+ [...]
+ 2. If iteratorRecord.[[done]] is true, let v be undefined.
+ 3. If Initializer is present and v is undefined, then
+ a. Let defaultValue be the result of evaluating Initializer.
+ b. Let v be ? GetValue(defaultValue).
+ 4. Return the result of performing BindingInitialization of BindingPattern
+ with v and environment as the arguments.
+---*/
+
+const [{ x, y, z } = { x: 44, y: 55, z: 66 }] = [];
+
+assert.sameValue(x, 44);
+assert.sameValue(y, 55);
+assert.sameValue(z, 66);
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/language/statements/const/dstr/ary-ptrn-elem-obj-id.js b/js/src/tests/test262/language/statements/const/dstr/ary-ptrn-elem-obj-id.js
new file mode 100644
index 0000000000..47a06dd2fb
--- /dev/null
+++ b/js/src/tests/test262/language/statements/const/dstr/ary-ptrn-elem-obj-id.js
@@ -0,0 +1,38 @@
+// This file was procedurally generated from the following sources:
+// - src/dstr-binding/ary-ptrn-elem-obj-id.case
+// - src/dstr-binding/default/const-stmt.template
+/*---
+description: BindingElement with object binding pattern and initializer is not used (`const` statement)
+esid: sec-let-and-const-declarations-runtime-semantics-evaluation
+features: [destructuring-binding]
+flags: [generated]
+info: |
+ LexicalBinding : BindingPattern Initializer
+
+ 1. Let rhs be the result of evaluating Initializer.
+ 2. Let value be GetValue(rhs).
+ 3. ReturnIfAbrupt(value).
+ 4. Let env be the running execution context's LexicalEnvironment.
+ 5. Return the result of performing BindingInitialization for BindingPattern
+ using value and env as the arguments.
+
+ 13.3.3.6 Runtime Semantics: IteratorBindingInitialization
+
+ BindingElement : BindingPatternInitializer opt
+
+ [...]
+ 2. If iteratorRecord.[[done]] is true, let v be undefined.
+ 3. If Initializer is present and v is undefined, then
+ a. Let defaultValue be the result of evaluating Initializer.
+ b. Let v be ? GetValue(defaultValue).
+ 4. Return the result of performing BindingInitialization of BindingPattern
+ with v and environment as the arguments.
+---*/
+
+const [{ x, y, z } = { x: 44, y: 55, z: 66 }] = [{ x: 11, y: 22, z: 33 }];
+
+assert.sameValue(x, 11);
+assert.sameValue(y, 22);
+assert.sameValue(z, 33);
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/language/statements/const/dstr/ary-ptrn-elem-obj-prop-id-init.js b/js/src/tests/test262/language/statements/const/dstr/ary-ptrn-elem-obj-prop-id-init.js
new file mode 100644
index 0000000000..397879716f
--- /dev/null
+++ b/js/src/tests/test262/language/statements/const/dstr/ary-ptrn-elem-obj-prop-id-init.js
@@ -0,0 +1,48 @@
+// This file was procedurally generated from the following sources:
+// - src/dstr-binding/ary-ptrn-elem-obj-prop-id-init.case
+// - src/dstr-binding/default/const-stmt.template
+/*---
+description: BindingElement with object binding pattern and initializer is used (`const` statement)
+esid: sec-let-and-const-declarations-runtime-semantics-evaluation
+features: [destructuring-binding]
+flags: [generated]
+info: |
+ LexicalBinding : BindingPattern Initializer
+
+ 1. Let rhs be the result of evaluating Initializer.
+ 2. Let value be GetValue(rhs).
+ 3. ReturnIfAbrupt(value).
+ 4. Let env be the running execution context's LexicalEnvironment.
+ 5. Return the result of performing BindingInitialization for BindingPattern
+ using value and env as the arguments.
+
+ 13.3.3.6 Runtime Semantics: IteratorBindingInitialization
+
+ BindingElement : BindingPatternInitializer opt
+
+ [...]
+ 2. If iteratorRecord.[[done]] is true, let v be undefined.
+ 3. If Initializer is present and v is undefined, then
+ a. Let defaultValue be the result of evaluating Initializer.
+ b. Let v be ? GetValue(defaultValue).
+ 4. Return the result of performing BindingInitialization of BindingPattern
+ with v and environment as the arguments.
+---*/
+
+const [{ u: v, w: x, y: z } = { u: 444, w: 555, y: 666 }] = [];
+
+assert.sameValue(v, 444);
+assert.sameValue(x, 555);
+assert.sameValue(z, 666);
+
+assert.throws(ReferenceError, function() {
+ u;
+});
+assert.throws(ReferenceError, function() {
+ w;
+});
+assert.throws(ReferenceError, function() {
+ y;
+});
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/language/statements/const/dstr/ary-ptrn-elem-obj-prop-id.js b/js/src/tests/test262/language/statements/const/dstr/ary-ptrn-elem-obj-prop-id.js
new file mode 100644
index 0000000000..cb37e16ae0
--- /dev/null
+++ b/js/src/tests/test262/language/statements/const/dstr/ary-ptrn-elem-obj-prop-id.js
@@ -0,0 +1,48 @@
+// This file was procedurally generated from the following sources:
+// - src/dstr-binding/ary-ptrn-elem-obj-prop-id.case
+// - src/dstr-binding/default/const-stmt.template
+/*---
+description: BindingElement with object binding pattern and initializer is not used (`const` statement)
+esid: sec-let-and-const-declarations-runtime-semantics-evaluation
+features: [destructuring-binding]
+flags: [generated]
+info: |
+ LexicalBinding : BindingPattern Initializer
+
+ 1. Let rhs be the result of evaluating Initializer.
+ 2. Let value be GetValue(rhs).
+ 3. ReturnIfAbrupt(value).
+ 4. Let env be the running execution context's LexicalEnvironment.
+ 5. Return the result of performing BindingInitialization for BindingPattern
+ using value and env as the arguments.
+
+ 13.3.3.6 Runtime Semantics: IteratorBindingInitialization
+
+ BindingElement : BindingPatternInitializer opt
+
+ [...]
+ 2. If iteratorRecord.[[done]] is true, let v be undefined.
+ 3. If Initializer is present and v is undefined, then
+ a. Let defaultValue be the result of evaluating Initializer.
+ b. Let v be ? GetValue(defaultValue).
+ 4. Return the result of performing BindingInitialization of BindingPattern
+ with v and environment as the arguments.
+---*/
+
+const [{ u: v, w: x, y: z } = { u: 444, w: 555, y: 666 }] = [{ u: 777, w: 888, y: 999 }];
+
+assert.sameValue(v, 777);
+assert.sameValue(x, 888);
+assert.sameValue(z, 999);
+
+assert.throws(ReferenceError, function() {
+ u;
+});
+assert.throws(ReferenceError, function() {
+ w;
+});
+assert.throws(ReferenceError, function() {
+ y;
+});
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/language/statements/const/dstr/ary-ptrn-elem-obj-val-null.js b/js/src/tests/test262/language/statements/const/dstr/ary-ptrn-elem-obj-val-null.js
new file mode 100644
index 0000000000..08e3671b88
--- /dev/null
+++ b/js/src/tests/test262/language/statements/const/dstr/ary-ptrn-elem-obj-val-null.js
@@ -0,0 +1,43 @@
+// This file was procedurally generated from the following sources:
+// - src/dstr-binding/ary-ptrn-elem-obj-val-null.case
+// - src/dstr-binding/error/const-stmt.template
+/*---
+description: Nested object destructuring with a null value (`const` statement)
+esid: sec-let-and-const-declarations-runtime-semantics-evaluation
+features: [destructuring-binding]
+flags: [generated]
+info: |
+ LexicalBinding : BindingPattern Initializer
+
+ 1. Let rhs be the result of evaluating Initializer.
+ 2. Let value be GetValue(rhs).
+ 3. ReturnIfAbrupt(value).
+ 4. Let env be the running execution context's LexicalEnvironment.
+ 5. Return the result of performing BindingInitialization for BindingPattern
+ using value and env as the arguments.
+
+ 13.3.3.6 Runtime Semantics: IteratorBindingInitialization
+
+ BindingElement : BindingPattern Initializeropt
+
+ 1. If iteratorRecord.[[done]] is false, then
+ [...]
+ e. Else
+ i. Let v be IteratorValue(next).
+ [...]
+ 4. Return the result of performing BindingInitialization of BindingPattern
+ with v and environment as the arguments.
+
+ 13.3.3.5 Runtime Semantics: BindingInitialization
+
+ BindingPattern : ObjectBindingPattern
+
+ 1. Let valid be RequireObjectCoercible(value).
+ 2. ReturnIfAbrupt(valid).
+---*/
+
+assert.throws(TypeError, function() {
+ const [{ x }] = [null];
+});
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/language/statements/const/dstr/ary-ptrn-elem-obj-val-undef.js b/js/src/tests/test262/language/statements/const/dstr/ary-ptrn-elem-obj-val-undef.js
new file mode 100644
index 0000000000..767b2f9f76
--- /dev/null
+++ b/js/src/tests/test262/language/statements/const/dstr/ary-ptrn-elem-obj-val-undef.js
@@ -0,0 +1,43 @@
+// This file was procedurally generated from the following sources:
+// - src/dstr-binding/ary-ptrn-elem-obj-val-undef.case
+// - src/dstr-binding/error/const-stmt.template
+/*---
+description: Nested object destructuring with a value of `undefined` (`const` statement)
+esid: sec-let-and-const-declarations-runtime-semantics-evaluation
+features: [destructuring-binding]
+flags: [generated]
+info: |
+ LexicalBinding : BindingPattern Initializer
+
+ 1. Let rhs be the result of evaluating Initializer.
+ 2. Let value be GetValue(rhs).
+ 3. ReturnIfAbrupt(value).
+ 4. Let env be the running execution context's LexicalEnvironment.
+ 5. Return the result of performing BindingInitialization for BindingPattern
+ using value and env as the arguments.
+
+ 13.3.3.6 Runtime Semantics: IteratorBindingInitialization
+
+ BindingElement : BindingPattern Initializeropt
+
+ 1. If iteratorRecord.[[done]] is false, then
+ [...]
+ e. Else
+ i. Let v be IteratorValue(next).
+ [...]
+ 4. Return the result of performing BindingInitialization of BindingPattern
+ with v and environment as the arguments.
+
+ 13.3.3.5 Runtime Semantics: BindingInitialization
+
+ BindingPattern : ObjectBindingPattern
+
+ 1. Let valid be RequireObjectCoercible(value).
+ 2. ReturnIfAbrupt(valid).
+---*/
+
+assert.throws(TypeError, function() {
+ const [{ x }] = [];
+});
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/language/statements/const/dstr/ary-ptrn-elision-exhausted.js b/js/src/tests/test262/language/statements/const/dstr/ary-ptrn-elision-exhausted.js
new file mode 100644
index 0000000000..433991aa72
--- /dev/null
+++ b/js/src/tests/test262/language/statements/const/dstr/ary-ptrn-elision-exhausted.js
@@ -0,0 +1,43 @@
+// This file was procedurally generated from the following sources:
+// - src/dstr-binding/ary-ptrn-elision-exhausted.case
+// - src/dstr-binding/default/const-stmt.template
+/*---
+description: Elision accepts exhausted iterator (`const` statement)
+esid: sec-let-and-const-declarations-runtime-semantics-evaluation
+features: [generators, destructuring-binding]
+flags: [generated]
+info: |
+ LexicalBinding : BindingPattern Initializer
+
+ 1. Let rhs be the result of evaluating Initializer.
+ 2. Let value be GetValue(rhs).
+ 3. ReturnIfAbrupt(value).
+ 4. Let env be the running execution context's LexicalEnvironment.
+ 5. Return the result of performing BindingInitialization for BindingPattern
+ using value and env as the arguments.
+
+ 13.3.3.6 Runtime Semantics: IteratorBindingInitialization
+
+ ArrayBindingPattern : [ Elision ]
+
+ 1. Return the result of performing
+ IteratorDestructuringAssignmentEvaluation of Elision with iteratorRecord
+ as the argument.
+
+ 12.14.5.3 Runtime Semantics: IteratorDestructuringAssignmentEvaluation
+
+ Elision : ,
+
+ 1. If iteratorRecord.[[done]] is false, then
+ [...]
+ 2. Return NormalCompletion(empty).
+
+---*/
+var iter = function*() {}();
+iter.next();
+
+const [,] = iter;
+
+
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/language/statements/const/dstr/ary-ptrn-elision-step-err.js b/js/src/tests/test262/language/statements/const/dstr/ary-ptrn-elision-step-err.js
new file mode 100644
index 0000000000..29de74290d
--- /dev/null
+++ b/js/src/tests/test262/language/statements/const/dstr/ary-ptrn-elision-step-err.js
@@ -0,0 +1,50 @@
+// This file was procedurally generated from the following sources:
+// - src/dstr-binding/ary-ptrn-elision-step-err.case
+// - src/dstr-binding/error/const-stmt.template
+/*---
+description: Elision advances iterator and forwards abrupt completions (`const` statement)
+esid: sec-let-and-const-declarations-runtime-semantics-evaluation
+features: [generators, destructuring-binding]
+flags: [generated]
+info: |
+ LexicalBinding : BindingPattern Initializer
+
+ 1. Let rhs be the result of evaluating Initializer.
+ 2. Let value be GetValue(rhs).
+ 3. ReturnIfAbrupt(value).
+ 4. Let env be the running execution context's LexicalEnvironment.
+ 5. Return the result of performing BindingInitialization for BindingPattern
+ using value and env as the arguments.
+
+ 13.3.3.6 Runtime Semantics: IteratorBindingInitialization
+
+ ArrayBindingPattern : [ Elision ]
+
+ 1. Return the result of performing
+ IteratorDestructuringAssignmentEvaluation of Elision with iteratorRecord
+ as the argument.
+
+ 12.14.5.3 Runtime Semantics: IteratorDestructuringAssignmentEvaluation
+
+ Elision : ,
+
+ 1. If iteratorRecord.[[done]] is false, then
+ a. Let next be IteratorStep(iteratorRecord.[[iterator]]).
+ b. If next is an abrupt completion, set iteratorRecord.[[done]] to true.
+ c. ReturnIfAbrupt(next).
+
+---*/
+var following = 0;
+var iter =function* () {
+ throw new Test262Error();
+ following += 1;
+}();
+
+assert.throws(Test262Error, function() {
+ const [,] = iter;
+});
+
+iter.next();
+assert.sameValue(following, 0, 'Iterator was properly closed.');
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/language/statements/const/dstr/ary-ptrn-elision.js b/js/src/tests/test262/language/statements/const/dstr/ary-ptrn-elision.js
new file mode 100644
index 0000000000..8a5c0e44ba
--- /dev/null
+++ b/js/src/tests/test262/language/statements/const/dstr/ary-ptrn-elision.js
@@ -0,0 +1,52 @@
+// This file was procedurally generated from the following sources:
+// - src/dstr-binding/ary-ptrn-elision.case
+// - src/dstr-binding/default/const-stmt.template
+/*---
+description: Elision advances iterator (`const` statement)
+esid: sec-let-and-const-declarations-runtime-semantics-evaluation
+features: [generators, destructuring-binding]
+flags: [generated]
+info: |
+ LexicalBinding : BindingPattern Initializer
+
+ 1. Let rhs be the result of evaluating Initializer.
+ 2. Let value be GetValue(rhs).
+ 3. ReturnIfAbrupt(value).
+ 4. Let env be the running execution context's LexicalEnvironment.
+ 5. Return the result of performing BindingInitialization for BindingPattern
+ using value and env as the arguments.
+
+ 13.3.3.6 Runtime Semantics: IteratorBindingInitialization
+
+ ArrayBindingPattern : [ Elision ]
+
+ 1. Return the result of performing
+ IteratorDestructuringAssignmentEvaluation of Elision with iteratorRecord
+ as the argument.
+
+ 12.14.5.3 Runtime Semantics: IteratorDestructuringAssignmentEvaluation
+
+ Elision : ,
+
+ 1. If iteratorRecord.[[done]] is false, then
+ a. Let next be IteratorStep(iteratorRecord.[[iterator]]).
+ b. If next is an abrupt completion, set iteratorRecord.[[done]] to true.
+ c. ReturnIfAbrupt(next).
+ d. If next is false, set iteratorRecord.[[done]] to true.
+ 2. Return NormalCompletion(empty).
+
+---*/
+var first = 0;
+var second = 0;
+function* g() {
+ first += 1;
+ yield;
+ second += 1;
+};
+
+const [,] = g();
+
+assert.sameValue(first, 1);
+assert.sameValue(second, 0);
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/language/statements/const/dstr/ary-ptrn-empty.js b/js/src/tests/test262/language/statements/const/dstr/ary-ptrn-empty.js
new file mode 100644
index 0000000000..9eb0b1270a
--- /dev/null
+++ b/js/src/tests/test262/language/statements/const/dstr/ary-ptrn-empty.js
@@ -0,0 +1,35 @@
+// This file was procedurally generated from the following sources:
+// - src/dstr-binding/ary-ptrn-empty.case
+// - src/dstr-binding/default/const-stmt.template
+/*---
+description: No iteration occurs for an "empty" array binding pattern (`const` statement)
+esid: sec-let-and-const-declarations-runtime-semantics-evaluation
+features: [generators, destructuring-binding]
+flags: [generated]
+info: |
+ LexicalBinding : BindingPattern Initializer
+
+ 1. Let rhs be the result of evaluating Initializer.
+ 2. Let value be GetValue(rhs).
+ 3. ReturnIfAbrupt(value).
+ 4. Let env be the running execution context's LexicalEnvironment.
+ 5. Return the result of performing BindingInitialization for BindingPattern
+ using value and env as the arguments.
+
+ 13.3.3.6 Runtime Semantics: IteratorBindingInitialization
+
+ ArrayBindingPattern : [ ]
+
+ 1. Return NormalCompletion(empty).
+
+---*/
+var iterations = 0;
+var iter = function*() {
+ iterations += 1;
+}();
+
+const [] = iter;
+
+assert.sameValue(iterations, 0);
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/language/statements/const/dstr/ary-ptrn-rest-ary-elem.js b/js/src/tests/test262/language/statements/const/dstr/ary-ptrn-rest-ary-elem.js
new file mode 100644
index 0000000000..784f739674
--- /dev/null
+++ b/js/src/tests/test262/language/statements/const/dstr/ary-ptrn-rest-ary-elem.js
@@ -0,0 +1,59 @@
+// This file was procedurally generated from the following sources:
+// - src/dstr-binding/ary-ptrn-rest-ary-elem.case
+// - src/dstr-binding/default/const-stmt.template
+/*---
+description: Rest element containing an array BindingElementList pattern (`const` statement)
+esid: sec-let-and-const-declarations-runtime-semantics-evaluation
+features: [destructuring-binding]
+flags: [generated]
+info: |
+ LexicalBinding : BindingPattern Initializer
+
+ 1. Let rhs be the result of evaluating Initializer.
+ 2. Let value be GetValue(rhs).
+ 3. ReturnIfAbrupt(value).
+ 4. Let env be the running execution context's LexicalEnvironment.
+ 5. Return the result of performing BindingInitialization for BindingPattern
+ using value and env as the arguments.
+
+ 13.3.3.6 Runtime Semantics: IteratorBindingInitialization
+
+ BindingRestElement : ... BindingPattern
+
+ 1. Let A be ArrayCreate(0).
+ [...]
+ 3. Repeat
+ [...]
+ b. If iteratorRecord.[[done]] is true, then
+ i. Return the result of performing BindingInitialization of
+ BindingPattern with A and environment as the arguments.
+ [...]
+
+ 13.3.3.6 Runtime Semantics: IteratorBindingInitialization
+
+ SingleNameBinding : BindingIdentifier Initializeropt
+
+ [...]
+ 4. If iteratorRecord.[[done]] is false, then
+ a. Let next be IteratorStep(iteratorRecord.[[iterator]]).
+ b. If next is an abrupt completion, set iteratorRecord.[[done]] to true.
+ c. ReturnIfAbrupt(next).
+ d. If next is false, set iteratorRecord.[[done]] to true.
+ e. Else,
+ [...]
+ i. Let v be IteratorValue(next).
+ ii. If v is an abrupt completion, set
+ iteratorRecord.[[done]] to true.
+ iii. ReturnIfAbrupt(v).
+ 5. If iteratorRecord.[[done]] is true, let v be undefined.
+ [...]
+ 8. Return InitializeReferencedBinding(lhs, v).
+---*/
+
+const [...[x, y, z]] = [3, 4, 5];
+
+assert.sameValue(x, 3);
+assert.sameValue(y, 4);
+assert.sameValue(z, 5);
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/language/statements/const/dstr/ary-ptrn-rest-ary-elision.js b/js/src/tests/test262/language/statements/const/dstr/ary-ptrn-rest-ary-elision.js
new file mode 100644
index 0000000000..b5de2c0cea
--- /dev/null
+++ b/js/src/tests/test262/language/statements/const/dstr/ary-ptrn-rest-ary-elision.js
@@ -0,0 +1,65 @@
+// This file was procedurally generated from the following sources:
+// - src/dstr-binding/ary-ptrn-rest-ary-elision.case
+// - src/dstr-binding/default/const-stmt.template
+/*---
+description: Rest element containing an elision (`const` statement)
+esid: sec-let-and-const-declarations-runtime-semantics-evaluation
+features: [generators, destructuring-binding]
+flags: [generated]
+info: |
+ LexicalBinding : BindingPattern Initializer
+
+ 1. Let rhs be the result of evaluating Initializer.
+ 2. Let value be GetValue(rhs).
+ 3. ReturnIfAbrupt(value).
+ 4. Let env be the running execution context's LexicalEnvironment.
+ 5. Return the result of performing BindingInitialization for BindingPattern
+ using value and env as the arguments.
+
+ 13.3.3.6 Runtime Semantics: IteratorBindingInitialization
+
+ BindingRestElement : ... BindingPattern
+
+ 1. Let A be ArrayCreate(0).
+ [...]
+ 3. Repeat
+ [...]
+ b. If iteratorRecord.[[done]] is true, then
+ i. Return the result of performing BindingInitialization of
+ BindingPattern with A and environment as the arguments.
+ [...]
+
+ 13.3.3.6 Runtime Semantics: IteratorBindingInitialization
+
+ ArrayBindingPattern : [ Elision ]
+
+ 1. Return the result of performing
+ IteratorDestructuringAssignmentEvaluation of Elision with iteratorRecord
+ as the argument.
+
+ 12.14.5.3 Runtime Semantics: IteratorDestructuringAssignmentEvaluation
+
+ Elision : ,
+
+ 1. If iteratorRecord.[[done]] is false, then
+ a. Let next be IteratorStep(iteratorRecord.[[iterator]]).
+ b. If next is an abrupt completion, set iteratorRecord.[[done]] to true.
+ c. ReturnIfAbrupt(next).
+ d. If next is false, set iteratorRecord.[[done]] to true.
+ 2. Return NormalCompletion(empty).
+
+---*/
+var first = 0;
+var second = 0;
+function* g() {
+ first += 1;
+ yield;
+ second += 1;
+};
+
+const [...[,]] = g();
+
+assert.sameValue(first, 1);
+assert.sameValue(second, 1);
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/language/statements/const/dstr/ary-ptrn-rest-ary-empty.js b/js/src/tests/test262/language/statements/const/dstr/ary-ptrn-rest-ary-empty.js
new file mode 100644
index 0000000000..4a90f996eb
--- /dev/null
+++ b/js/src/tests/test262/language/statements/const/dstr/ary-ptrn-rest-ary-empty.js
@@ -0,0 +1,48 @@
+// This file was procedurally generated from the following sources:
+// - src/dstr-binding/ary-ptrn-rest-ary-empty.case
+// - src/dstr-binding/default/const-stmt.template
+/*---
+description: Rest element containing an "empty" array pattern (`const` statement)
+esid: sec-let-and-const-declarations-runtime-semantics-evaluation
+features: [generators, destructuring-binding]
+flags: [generated]
+info: |
+ LexicalBinding : BindingPattern Initializer
+
+ 1. Let rhs be the result of evaluating Initializer.
+ 2. Let value be GetValue(rhs).
+ 3. ReturnIfAbrupt(value).
+ 4. Let env be the running execution context's LexicalEnvironment.
+ 5. Return the result of performing BindingInitialization for BindingPattern
+ using value and env as the arguments.
+
+ 13.3.3.6 Runtime Semantics: IteratorBindingInitialization
+
+ BindingRestElement : ... BindingPattern
+
+ 1. Let A be ArrayCreate(0).
+ [...]
+ 3. Repeat
+ [...]
+ b. If iteratorRecord.[[done]] is true, then
+ i. Return the result of performing BindingInitialization of
+ BindingPattern with A and environment as the arguments.
+ [...]
+
+ 13.3.3.6 Runtime Semantics: IteratorBindingInitialization
+
+ ArrayBindingPattern : [ ]
+
+ 1. Return NormalCompletion(empty).
+
+---*/
+var iterations = 0;
+var iter = function*() {
+ iterations += 1;
+}();
+
+const [...[]] = iter;
+
+assert.sameValue(iterations, 1);
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/language/statements/const/dstr/ary-ptrn-rest-ary-rest.js b/js/src/tests/test262/language/statements/const/dstr/ary-ptrn-rest-ary-rest.js
new file mode 100644
index 0000000000..d296e256ac
--- /dev/null
+++ b/js/src/tests/test262/language/statements/const/dstr/ary-ptrn-rest-ary-rest.js
@@ -0,0 +1,44 @@
+// This file was procedurally generated from the following sources:
+// - src/dstr-binding/ary-ptrn-rest-ary-rest.case
+// - src/dstr-binding/default/const-stmt.template
+/*---
+description: Rest element containing a rest element (`const` statement)
+esid: sec-let-and-const-declarations-runtime-semantics-evaluation
+features: [destructuring-binding]
+flags: [generated]
+info: |
+ LexicalBinding : BindingPattern Initializer
+
+ 1. Let rhs be the result of evaluating Initializer.
+ 2. Let value be GetValue(rhs).
+ 3. ReturnIfAbrupt(value).
+ 4. Let env be the running execution context's LexicalEnvironment.
+ 5. Return the result of performing BindingInitialization for BindingPattern
+ using value and env as the arguments.
+
+ 13.3.3.6 Runtime Semantics: IteratorBindingInitialization
+
+ BindingRestElement : ... BindingPattern
+
+ 1. Let A be ArrayCreate(0).
+ [...]
+ 3. Repeat
+ [...]
+ b. If iteratorRecord.[[done]] is true, then
+ i. Return the result of performing BindingInitialization of
+ BindingPattern with A and environment as the arguments.
+ [...]
+---*/
+var values = [1, 2, 3];
+
+const [...[...x]] = values;
+
+assert(Array.isArray(x));
+assert.sameValue(x.length, 3);
+assert.sameValue(x[0], 1);
+assert.sameValue(x[1], 2);
+assert.sameValue(x[2], 3);
+assert.notSameValue(x, values);
+
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/language/statements/const/dstr/ary-ptrn-rest-id-direct.js b/js/src/tests/test262/language/statements/const/dstr/ary-ptrn-rest-id-direct.js
new file mode 100644
index 0000000000..91115eb9a6
--- /dev/null
+++ b/js/src/tests/test262/language/statements/const/dstr/ary-ptrn-rest-id-direct.js
@@ -0,0 +1,39 @@
+// This file was procedurally generated from the following sources:
+// - src/dstr-binding/ary-ptrn-rest-id-direct.case
+// - src/dstr-binding/default/const-stmt.template
+/*---
+description: Lone rest element (direct binding) (`const` statement)
+esid: sec-let-and-const-declarations-runtime-semantics-evaluation
+features: [destructuring-binding]
+flags: [generated]
+includes: [compareArray.js]
+info: |
+ LexicalBinding : BindingPattern Initializer
+
+ 1. Let rhs be the result of evaluating Initializer.
+ 2. Let value be GetValue(rhs).
+ 3. ReturnIfAbrupt(value).
+ 4. Let env be the running execution context's LexicalEnvironment.
+ 5. Return the result of performing BindingInitialization for BindingPattern
+ using value and env as the arguments.
+
+ Runtime Semantics: IteratorBindingInitialization
+
+ BindingRestElement : ... BindingIdentifier
+
+ [...]
+ 2. Let A be ! ArrayCreate(0).
+ 3. Let n be 0.
+ 4. Repeat,
+ [...]
+ f. Perform ! CreateDataPropertyOrThrow(A, ! ToString(n), nextValue).
+ g. Set n to n + 1.
+
+---*/
+
+const [...x] = [1];
+
+assert(Array.isArray(x));
+assert.compareArray(x, [1]);
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/language/statements/const/dstr/ary-ptrn-rest-id-elision-next-err.js b/js/src/tests/test262/language/statements/const/dstr/ary-ptrn-rest-id-elision-next-err.js
new file mode 100644
index 0000000000..682e01c23f
--- /dev/null
+++ b/js/src/tests/test262/language/statements/const/dstr/ary-ptrn-rest-id-elision-next-err.js
@@ -0,0 +1,36 @@
+// This file was procedurally generated from the following sources:
+// - src/dstr-binding/ary-ptrn-rest-id-elision-next-err.case
+// - src/dstr-binding/error/const-stmt.template
+/*---
+description: Rest element following elision elements (`const` statement)
+esid: sec-let-and-const-declarations-runtime-semantics-evaluation
+features: [generators, destructuring-binding]
+flags: [generated]
+info: |
+ LexicalBinding : BindingPattern Initializer
+
+ 1. Let rhs be the result of evaluating Initializer.
+ 2. Let value be GetValue(rhs).
+ 3. ReturnIfAbrupt(value).
+ 4. Let env be the running execution context's LexicalEnvironment.
+ 5. Return the result of performing BindingInitialization for BindingPattern
+ using value and env as the arguments.
+
+ 13.3.3.6 Runtime Semantics: IteratorBindingInitialization
+ ArrayBindingPattern : [ Elisionopt BindingRestElement ]
+ 1. If Elision is present, then
+ a. Let status be the result of performing
+ IteratorDestructuringAssignmentEvaluation of Elision with
+ iteratorRecord as the argument.
+ b. ReturnIfAbrupt(status).
+ 2. Return the result of performing IteratorBindingInitialization for
+ BindingRestElement with iteratorRecord and environment as arguments.
+
+---*/
+var iter = (function*() { throw new Test262Error(); })();
+
+assert.throws(Test262Error, function() {
+ const [, ...x] = iter;
+});
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/language/statements/const/dstr/ary-ptrn-rest-id-elision.js b/js/src/tests/test262/language/statements/const/dstr/ary-ptrn-rest-id-elision.js
new file mode 100644
index 0000000000..0ff6c6985c
--- /dev/null
+++ b/js/src/tests/test262/language/statements/const/dstr/ary-ptrn-rest-id-elision.js
@@ -0,0 +1,40 @@
+// This file was procedurally generated from the following sources:
+// - src/dstr-binding/ary-ptrn-rest-id-elision.case
+// - src/dstr-binding/default/const-stmt.template
+/*---
+description: Rest element following elision elements (`const` statement)
+esid: sec-let-and-const-declarations-runtime-semantics-evaluation
+features: [destructuring-binding]
+flags: [generated]
+info: |
+ LexicalBinding : BindingPattern Initializer
+
+ 1. Let rhs be the result of evaluating Initializer.
+ 2. Let value be GetValue(rhs).
+ 3. ReturnIfAbrupt(value).
+ 4. Let env be the running execution context's LexicalEnvironment.
+ 5. Return the result of performing BindingInitialization for BindingPattern
+ using value and env as the arguments.
+
+ 13.3.3.6 Runtime Semantics: IteratorBindingInitialization
+ ArrayBindingPattern : [ Elisionopt BindingRestElement ]
+ 1. If Elision is present, then
+ a. Let status be the result of performing
+ IteratorDestructuringAssignmentEvaluation of Elision with
+ iteratorRecord as the argument.
+ b. ReturnIfAbrupt(status).
+ 2. Return the result of performing IteratorBindingInitialization for
+ BindingRestElement with iteratorRecord and environment as arguments.
+---*/
+var values = [1, 2, 3, 4, 5];
+
+const [ , , ...x] = values;
+
+assert(Array.isArray(x));
+assert.sameValue(x.length, 3);
+assert.sameValue(x[0], 3);
+assert.sameValue(x[1], 4);
+assert.sameValue(x[2], 5);
+assert.notSameValue(x, values);
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/language/statements/const/dstr/ary-ptrn-rest-id-exhausted.js b/js/src/tests/test262/language/statements/const/dstr/ary-ptrn-rest-id-exhausted.js
new file mode 100644
index 0000000000..6df89f3ec5
--- /dev/null
+++ b/js/src/tests/test262/language/statements/const/dstr/ary-ptrn-rest-id-exhausted.js
@@ -0,0 +1,36 @@
+// This file was procedurally generated from the following sources:
+// - src/dstr-binding/ary-ptrn-rest-id-exhausted.case
+// - src/dstr-binding/default/const-stmt.template
+/*---
+description: RestElement applied to an exhausted iterator (`const` statement)
+esid: sec-let-and-const-declarations-runtime-semantics-evaluation
+features: [Symbol.iterator, destructuring-binding]
+flags: [generated]
+info: |
+ LexicalBinding : BindingPattern Initializer
+
+ 1. Let rhs be the result of evaluating Initializer.
+ 2. Let value be GetValue(rhs).
+ 3. ReturnIfAbrupt(value).
+ 4. Let env be the running execution context's LexicalEnvironment.
+ 5. Return the result of performing BindingInitialization for BindingPattern
+ using value and env as the arguments.
+
+ 13.3.3.6 Runtime Semantics: IteratorBindingInitialization
+ BindingRestElement : ... BindingIdentifier
+ 1. Let lhs be ResolveBinding(StringValue of BindingIdentifier,
+ environment).
+ 2. ReturnIfAbrupt(lhs). 3. Let A be ArrayCreate(0). 4. Let n=0. 5. Repeat,
+ [...]
+ b. If iteratorRecord.[[done]] is true, then
+ i. If environment is undefined, return PutValue(lhs, A).
+ ii. Return InitializeReferencedBinding(lhs, A).
+
+---*/
+
+const [, , ...x] = [1, 2];
+
+assert(Array.isArray(x));
+assert.sameValue(x.length, 0);
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/language/statements/const/dstr/ary-ptrn-rest-id-iter-step-err.js b/js/src/tests/test262/language/statements/const/dstr/ary-ptrn-rest-id-iter-step-err.js
new file mode 100644
index 0000000000..fae90635ed
--- /dev/null
+++ b/js/src/tests/test262/language/statements/const/dstr/ary-ptrn-rest-id-iter-step-err.js
@@ -0,0 +1,47 @@
+// This file was procedurally generated from the following sources:
+// - src/dstr-binding/ary-ptrn-rest-id-iter-step-err.case
+// - src/dstr-binding/error/const-stmt.template
+/*---
+description: Error forwarding when IteratorStep returns an abrupt completion (`const` statement)
+esid: sec-let-and-const-declarations-runtime-semantics-evaluation
+features: [generators, destructuring-binding]
+flags: [generated]
+info: |
+ LexicalBinding : BindingPattern Initializer
+
+ 1. Let rhs be the result of evaluating Initializer.
+ 2. Let value be GetValue(rhs).
+ 3. ReturnIfAbrupt(value).
+ 4. Let env be the running execution context's LexicalEnvironment.
+ 5. Return the result of performing BindingInitialization for BindingPattern
+ using value and env as the arguments.
+
+ 13.3.3.6 Runtime Semantics: IteratorBindingInitialization
+ BindingRestElement : ... BindingIdentifier
+ 1. Let lhs be ResolveBinding(StringValue of BindingIdentifier,
+ environment).
+ 2. ReturnIfAbrupt(lhs). 3. Let A be ArrayCreate(0). 4. Let n=0. 5. Repeat,
+ a. If iteratorRecord.[[done]] is false,
+ i. Let next be IteratorStep(iteratorRecord.[[iterator]]).
+ ii. If next is an abrupt completion, set iteratorRecord.[[done]] to
+ true.
+ iii. ReturnIfAbrupt(next).
+
+---*/
+var first = 0;
+var second = 0;
+var iter = function*() {
+ first += 1;
+ throw new Test262Error();
+ second += 1;
+}();
+
+assert.throws(Test262Error, function() {
+ const [...x] = iter;
+});
+
+iter.next();
+assert.sameValue(first, 1);
+assert.sameValue(second, 0, 'Iterator is closed following abrupt completion.');
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/language/statements/const/dstr/ary-ptrn-rest-id-iter-val-err.js b/js/src/tests/test262/language/statements/const/dstr/ary-ptrn-rest-id-iter-val-err.js
new file mode 100644
index 0000000000..8ff072c031
--- /dev/null
+++ b/js/src/tests/test262/language/statements/const/dstr/ary-ptrn-rest-id-iter-val-err.js
@@ -0,0 +1,49 @@
+// This file was procedurally generated from the following sources:
+// - src/dstr-binding/ary-ptrn-rest-id-iter-val-err.case
+// - src/dstr-binding/error/const-stmt.template
+/*---
+description: Error forwarding when IteratorValue returns an abrupt completion (`const` statement)
+esid: sec-let-and-const-declarations-runtime-semantics-evaluation
+features: [Symbol.iterator, destructuring-binding]
+flags: [generated]
+info: |
+ LexicalBinding : BindingPattern Initializer
+
+ 1. Let rhs be the result of evaluating Initializer.
+ 2. Let value be GetValue(rhs).
+ 3. ReturnIfAbrupt(value).
+ 4. Let env be the running execution context's LexicalEnvironment.
+ 5. Return the result of performing BindingInitialization for BindingPattern
+ using value and env as the arguments.
+
+ 13.3.3.6 Runtime Semantics: IteratorBindingInitialization
+ BindingRestElement : ... BindingIdentifier
+ 1. Let lhs be ResolveBinding(StringValue of BindingIdentifier,
+ environment).
+ 2. ReturnIfAbrupt(lhs). 3. Let A be ArrayCreate(0). 4. Let n=0. 5. Repeat,
+ [...]
+ c. Let nextValue be IteratorValue(next).
+ d. If nextValue is an abrupt completion, set iteratorRecord.[[done]] to
+ true.
+ e. ReturnIfAbrupt(nextValue).
+
+---*/
+var poisonedValue = Object.defineProperty({}, 'value', {
+ get: function() {
+ throw new Test262Error();
+ }
+});
+var iter = {};
+iter[Symbol.iterator] = function() {
+ return {
+ next: function() {
+ return poisonedValue;
+ }
+ };
+};
+
+assert.throws(Test262Error, function() {
+ const [...x] = iter;
+});
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/language/statements/const/dstr/ary-ptrn-rest-id.js b/js/src/tests/test262/language/statements/const/dstr/ary-ptrn-rest-id.js
new file mode 100644
index 0000000000..0b15751532
--- /dev/null
+++ b/js/src/tests/test262/language/statements/const/dstr/ary-ptrn-rest-id.js
@@ -0,0 +1,37 @@
+// This file was procedurally generated from the following sources:
+// - src/dstr-binding/ary-ptrn-rest-id.case
+// - src/dstr-binding/default/const-stmt.template
+/*---
+description: Lone rest element (`const` statement)
+esid: sec-let-and-const-declarations-runtime-semantics-evaluation
+features: [destructuring-binding]
+flags: [generated]
+info: |
+ LexicalBinding : BindingPattern Initializer
+
+ 1. Let rhs be the result of evaluating Initializer.
+ 2. Let value be GetValue(rhs).
+ 3. ReturnIfAbrupt(value).
+ 4. Let env be the running execution context's LexicalEnvironment.
+ 5. Return the result of performing BindingInitialization for BindingPattern
+ using value and env as the arguments.
+
+ 13.3.3.6 Runtime Semantics: IteratorBindingInitialization
+ BindingRestElement : ... BindingIdentifier
+ [...] 3. Let A be ArrayCreate(0). [...] 5. Repeat
+ [...]
+ f. Let status be CreateDataProperty(A, ToString (n), nextValue).
+ [...]
+---*/
+var values = [1, 2, 3];
+
+const [...x] = values;
+
+assert(Array.isArray(x));
+assert.sameValue(x.length, 3);
+assert.sameValue(x[0], 1);
+assert.sameValue(x[1], 2);
+assert.sameValue(x[2], 3);
+assert.notSameValue(x, values);
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/language/statements/const/dstr/ary-ptrn-rest-init-ary.js b/js/src/tests/test262/language/statements/const/dstr/ary-ptrn-rest-init-ary.js
new file mode 100644
index 0000000000..928ca0b939
--- /dev/null
+++ b/js/src/tests/test262/language/statements/const/dstr/ary-ptrn-rest-init-ary.js
@@ -0,0 +1,33 @@
+// |reftest| error:SyntaxError
+// This file was procedurally generated from the following sources:
+// - src/dstr-binding/ary-ptrn-rest-init-ary.case
+// - src/dstr-binding/default/const-stmt.template
+/*---
+description: Rest element (nested array pattern) does not support initializer (`const` statement)
+esid: sec-let-and-const-declarations-runtime-semantics-evaluation
+features: [destructuring-binding]
+flags: [generated]
+negative:
+ phase: parse
+ type: SyntaxError
+info: |
+ LexicalBinding : BindingPattern Initializer
+
+ 1. Let rhs be the result of evaluating Initializer.
+ 2. Let value be GetValue(rhs).
+ 3. ReturnIfAbrupt(value).
+ 4. Let env be the running execution context's LexicalEnvironment.
+ 5. Return the result of performing BindingInitialization for BindingPattern
+ using value and env as the arguments.
+
+ 13.3.3 Destructuring Binding Patterns
+ ArrayBindingPattern[Yield] :
+ [ Elisionopt BindingRestElement[?Yield]opt ]
+ [ BindingElementList[?Yield] ]
+ [ BindingElementList[?Yield] , Elisionopt BindingRestElement[?Yield]opt ]
+---*/
+$DONOTEVALUATE();
+
+const [...[ x ] = []] = [];
+
+
diff --git a/js/src/tests/test262/language/statements/const/dstr/ary-ptrn-rest-init-id.js b/js/src/tests/test262/language/statements/const/dstr/ary-ptrn-rest-init-id.js
new file mode 100644
index 0000000000..3df0ad569c
--- /dev/null
+++ b/js/src/tests/test262/language/statements/const/dstr/ary-ptrn-rest-init-id.js
@@ -0,0 +1,33 @@
+// |reftest| error:SyntaxError
+// This file was procedurally generated from the following sources:
+// - src/dstr-binding/ary-ptrn-rest-init-id.case
+// - src/dstr-binding/default/const-stmt.template
+/*---
+description: Rest element (identifier) does not support initializer (`const` statement)
+esid: sec-let-and-const-declarations-runtime-semantics-evaluation
+features: [destructuring-binding]
+flags: [generated]
+negative:
+ phase: parse
+ type: SyntaxError
+info: |
+ LexicalBinding : BindingPattern Initializer
+
+ 1. Let rhs be the result of evaluating Initializer.
+ 2. Let value be GetValue(rhs).
+ 3. ReturnIfAbrupt(value).
+ 4. Let env be the running execution context's LexicalEnvironment.
+ 5. Return the result of performing BindingInitialization for BindingPattern
+ using value and env as the arguments.
+
+ 13.3.3 Destructuring Binding Patterns
+ ArrayBindingPattern[Yield] :
+ [ Elisionopt BindingRestElement[?Yield]opt ]
+ [ BindingElementList[?Yield] ]
+ [ BindingElementList[?Yield] , Elisionopt BindingRestElement[?Yield]opt ]
+---*/
+$DONOTEVALUATE();
+
+const [...x = []] = [];
+
+
diff --git a/js/src/tests/test262/language/statements/const/dstr/ary-ptrn-rest-init-obj.js b/js/src/tests/test262/language/statements/const/dstr/ary-ptrn-rest-init-obj.js
new file mode 100644
index 0000000000..9fb68fbe7c
--- /dev/null
+++ b/js/src/tests/test262/language/statements/const/dstr/ary-ptrn-rest-init-obj.js
@@ -0,0 +1,33 @@
+// |reftest| error:SyntaxError
+// This file was procedurally generated from the following sources:
+// - src/dstr-binding/ary-ptrn-rest-init-obj.case
+// - src/dstr-binding/default/const-stmt.template
+/*---
+description: Rest element (nested object pattern) does not support initializer (`const` statement)
+esid: sec-let-and-const-declarations-runtime-semantics-evaluation
+features: [destructuring-binding]
+flags: [generated]
+negative:
+ phase: parse
+ type: SyntaxError
+info: |
+ LexicalBinding : BindingPattern Initializer
+
+ 1. Let rhs be the result of evaluating Initializer.
+ 2. Let value be GetValue(rhs).
+ 3. ReturnIfAbrupt(value).
+ 4. Let env be the running execution context's LexicalEnvironment.
+ 5. Return the result of performing BindingInitialization for BindingPattern
+ using value and env as the arguments.
+
+ 13.3.3 Destructuring Binding Patterns
+ ArrayBindingPattern[Yield] :
+ [ Elisionopt BindingRestElement[?Yield]opt ]
+ [ BindingElementList[?Yield] ]
+ [ BindingElementList[?Yield] , Elisionopt BindingRestElement[?Yield]opt ]
+---*/
+$DONOTEVALUATE();
+
+const [...{ x } = []] = [];
+
+
diff --git a/js/src/tests/test262/language/statements/const/dstr/ary-ptrn-rest-not-final-ary.js b/js/src/tests/test262/language/statements/const/dstr/ary-ptrn-rest-not-final-ary.js
new file mode 100644
index 0000000000..2d45dd916a
--- /dev/null
+++ b/js/src/tests/test262/language/statements/const/dstr/ary-ptrn-rest-not-final-ary.js
@@ -0,0 +1,33 @@
+// |reftest| error:SyntaxError
+// This file was procedurally generated from the following sources:
+// - src/dstr-binding/ary-ptrn-rest-not-final-ary.case
+// - src/dstr-binding/default/const-stmt.template
+/*---
+description: Rest element (array binding pattern) may not be followed by any element (`const` statement)
+esid: sec-let-and-const-declarations-runtime-semantics-evaluation
+features: [destructuring-binding]
+flags: [generated]
+negative:
+ phase: parse
+ type: SyntaxError
+info: |
+ LexicalBinding : BindingPattern Initializer
+
+ 1. Let rhs be the result of evaluating Initializer.
+ 2. Let value be GetValue(rhs).
+ 3. ReturnIfAbrupt(value).
+ 4. Let env be the running execution context's LexicalEnvironment.
+ 5. Return the result of performing BindingInitialization for BindingPattern
+ using value and env as the arguments.
+
+ 13.3.3 Destructuring Binding Patterns
+ ArrayBindingPattern[Yield] :
+ [ Elisionopt BindingRestElement[?Yield]opt ]
+ [ BindingElementList[?Yield] ]
+ [ BindingElementList[?Yield] , Elisionopt BindingRestElement[?Yield]opt ]
+---*/
+$DONOTEVALUATE();
+
+const [...[x], y] = [1, 2, 3];
+
+
diff --git a/js/src/tests/test262/language/statements/const/dstr/ary-ptrn-rest-not-final-id.js b/js/src/tests/test262/language/statements/const/dstr/ary-ptrn-rest-not-final-id.js
new file mode 100644
index 0000000000..4a91cb1d2a
--- /dev/null
+++ b/js/src/tests/test262/language/statements/const/dstr/ary-ptrn-rest-not-final-id.js
@@ -0,0 +1,33 @@
+// |reftest| error:SyntaxError
+// This file was procedurally generated from the following sources:
+// - src/dstr-binding/ary-ptrn-rest-not-final-id.case
+// - src/dstr-binding/default/const-stmt.template
+/*---
+description: Rest element (identifier) may not be followed by any element (`const` statement)
+esid: sec-let-and-const-declarations-runtime-semantics-evaluation
+features: [destructuring-binding]
+flags: [generated]
+negative:
+ phase: parse
+ type: SyntaxError
+info: |
+ LexicalBinding : BindingPattern Initializer
+
+ 1. Let rhs be the result of evaluating Initializer.
+ 2. Let value be GetValue(rhs).
+ 3. ReturnIfAbrupt(value).
+ 4. Let env be the running execution context's LexicalEnvironment.
+ 5. Return the result of performing BindingInitialization for BindingPattern
+ using value and env as the arguments.
+
+ 13.3.3 Destructuring Binding Patterns
+ ArrayBindingPattern[Yield] :
+ [ Elisionopt BindingRestElement[?Yield]opt ]
+ [ BindingElementList[?Yield] ]
+ [ BindingElementList[?Yield] , Elisionopt BindingRestElement[?Yield]opt ]
+---*/
+$DONOTEVALUATE();
+
+const [...x, y] = [1, 2, 3];
+
+
diff --git a/js/src/tests/test262/language/statements/const/dstr/ary-ptrn-rest-not-final-obj.js b/js/src/tests/test262/language/statements/const/dstr/ary-ptrn-rest-not-final-obj.js
new file mode 100644
index 0000000000..2b0b7b3be6
--- /dev/null
+++ b/js/src/tests/test262/language/statements/const/dstr/ary-ptrn-rest-not-final-obj.js
@@ -0,0 +1,33 @@
+// |reftest| error:SyntaxError
+// This file was procedurally generated from the following sources:
+// - src/dstr-binding/ary-ptrn-rest-not-final-obj.case
+// - src/dstr-binding/default/const-stmt.template
+/*---
+description: Rest element (object binding pattern) may not be followed by any element (`const` statement)
+esid: sec-let-and-const-declarations-runtime-semantics-evaluation
+features: [destructuring-binding]
+flags: [generated]
+negative:
+ phase: parse
+ type: SyntaxError
+info: |
+ LexicalBinding : BindingPattern Initializer
+
+ 1. Let rhs be the result of evaluating Initializer.
+ 2. Let value be GetValue(rhs).
+ 3. ReturnIfAbrupt(value).
+ 4. Let env be the running execution context's LexicalEnvironment.
+ 5. Return the result of performing BindingInitialization for BindingPattern
+ using value and env as the arguments.
+
+ 13.3.3 Destructuring Binding Patterns
+ ArrayBindingPattern[Yield] :
+ [ Elisionopt BindingRestElement[?Yield]opt ]
+ [ BindingElementList[?Yield] ]
+ [ BindingElementList[?Yield] , Elisionopt BindingRestElement[?Yield]opt ]
+---*/
+$DONOTEVALUATE();
+
+const [...{ x }, y] = [1, 2, 3];
+
+
diff --git a/js/src/tests/test262/language/statements/const/dstr/ary-ptrn-rest-obj-id.js b/js/src/tests/test262/language/statements/const/dstr/ary-ptrn-rest-obj-id.js
new file mode 100644
index 0000000000..2a0076c918
--- /dev/null
+++ b/js/src/tests/test262/language/statements/const/dstr/ary-ptrn-rest-obj-id.js
@@ -0,0 +1,37 @@
+// This file was procedurally generated from the following sources:
+// - src/dstr-binding/ary-ptrn-rest-obj-id.case
+// - src/dstr-binding/default/const-stmt.template
+/*---
+description: Rest element containing an object binding pattern (`const` statement)
+esid: sec-let-and-const-declarations-runtime-semantics-evaluation
+features: [destructuring-binding]
+flags: [generated]
+info: |
+ LexicalBinding : BindingPattern Initializer
+
+ 1. Let rhs be the result of evaluating Initializer.
+ 2. Let value be GetValue(rhs).
+ 3. ReturnIfAbrupt(value).
+ 4. Let env be the running execution context's LexicalEnvironment.
+ 5. Return the result of performing BindingInitialization for BindingPattern
+ using value and env as the arguments.
+
+ 13.3.3.6 Runtime Semantics: IteratorBindingInitialization
+
+ BindingRestElement : ... BindingPattern
+
+ 1. Let A be ArrayCreate(0).
+ [...]
+ 3. Repeat
+ [...]
+ b. If iteratorRecord.[[done]] is true, then
+ i. Return the result of performing BindingInitialization of
+ BindingPattern with A and environment as the arguments.
+ [...]
+---*/
+
+const [...{ length }] = [1, 2, 3];
+
+assert.sameValue(length, 3);
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/language/statements/const/dstr/ary-ptrn-rest-obj-prop-id.js b/js/src/tests/test262/language/statements/const/dstr/ary-ptrn-rest-obj-prop-id.js
new file mode 100644
index 0000000000..46ebf33e36
--- /dev/null
+++ b/js/src/tests/test262/language/statements/const/dstr/ary-ptrn-rest-obj-prop-id.js
@@ -0,0 +1,44 @@
+// This file was procedurally generated from the following sources:
+// - src/dstr-binding/ary-ptrn-rest-obj-prop-id.case
+// - src/dstr-binding/default/const-stmt.template
+/*---
+description: Rest element containing an object binding pattern (`const` statement)
+esid: sec-let-and-const-declarations-runtime-semantics-evaluation
+features: [destructuring-binding]
+flags: [generated]
+info: |
+ LexicalBinding : BindingPattern Initializer
+
+ 1. Let rhs be the result of evaluating Initializer.
+ 2. Let value be GetValue(rhs).
+ 3. ReturnIfAbrupt(value).
+ 4. Let env be the running execution context's LexicalEnvironment.
+ 5. Return the result of performing BindingInitialization for BindingPattern
+ using value and env as the arguments.
+
+ 13.3.3.6 Runtime Semantics: IteratorBindingInitialization
+
+ BindingRestElement : ... BindingPattern
+
+ 1. Let A be ArrayCreate(0).
+ [...]
+ 3. Repeat
+ [...]
+ b. If iteratorRecord.[[done]] is true, then
+ i. Return the result of performing BindingInitialization of
+ BindingPattern with A and environment as the arguments.
+ [...]
+---*/
+let length = "outer";
+
+const [...{ 0: v, 1: w, 2: x, 3: y, length: z }] = [7, 8, 9];
+
+assert.sameValue(v, 7);
+assert.sameValue(w, 8);
+assert.sameValue(x, 9);
+assert.sameValue(y, undefined);
+assert.sameValue(z, 3);
+
+assert.sameValue(length, "outer", "the length prop is not set as a binding name");
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/language/statements/const/dstr/browser.js b/js/src/tests/test262/language/statements/const/dstr/browser.js
new file mode 100644
index 0000000000..e69de29bb2
--- /dev/null
+++ b/js/src/tests/test262/language/statements/const/dstr/browser.js
diff --git a/js/src/tests/test262/language/statements/const/dstr/obj-init-null.js b/js/src/tests/test262/language/statements/const/dstr/obj-init-null.js
new file mode 100644
index 0000000000..a52dfd5269
--- /dev/null
+++ b/js/src/tests/test262/language/statements/const/dstr/obj-init-null.js
@@ -0,0 +1,30 @@
+// This file was procedurally generated from the following sources:
+// - src/dstr-binding/obj-init-null.case
+// - src/dstr-binding/error/const-stmt.template
+/*---
+description: Value specifed for object binding pattern must be object coercible (null) (`const` statement)
+esid: sec-let-and-const-declarations-runtime-semantics-evaluation
+features: [destructuring-binding]
+flags: [generated]
+info: |
+ LexicalBinding : BindingPattern Initializer
+
+ 1. Let rhs be the result of evaluating Initializer.
+ 2. Let value be GetValue(rhs).
+ 3. ReturnIfAbrupt(value).
+ 4. Let env be the running execution context's LexicalEnvironment.
+ 5. Return the result of performing BindingInitialization for BindingPattern
+ using value and env as the arguments.
+
+ Runtime Semantics: BindingInitialization
+
+ ObjectBindingPattern : { }
+
+ 1. Return NormalCompletion(empty).
+---*/
+
+assert.throws(TypeError, function() {
+ const {} = null;
+});
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/language/statements/const/dstr/obj-init-undefined.js b/js/src/tests/test262/language/statements/const/dstr/obj-init-undefined.js
new file mode 100644
index 0000000000..43b9d58043
--- /dev/null
+++ b/js/src/tests/test262/language/statements/const/dstr/obj-init-undefined.js
@@ -0,0 +1,30 @@
+// This file was procedurally generated from the following sources:
+// - src/dstr-binding/obj-init-undefined.case
+// - src/dstr-binding/error/const-stmt.template
+/*---
+description: Value specifed for object binding pattern must be object coercible (undefined) (`const` statement)
+esid: sec-let-and-const-declarations-runtime-semantics-evaluation
+features: [destructuring-binding]
+flags: [generated]
+info: |
+ LexicalBinding : BindingPattern Initializer
+
+ 1. Let rhs be the result of evaluating Initializer.
+ 2. Let value be GetValue(rhs).
+ 3. ReturnIfAbrupt(value).
+ 4. Let env be the running execution context's LexicalEnvironment.
+ 5. Return the result of performing BindingInitialization for BindingPattern
+ using value and env as the arguments.
+
+ Runtime Semantics: BindingInitialization
+
+ ObjectBindingPattern : { }
+
+ 1. Return NormalCompletion(empty).
+---*/
+
+assert.throws(TypeError, function() {
+ const {} = undefined;
+});
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/language/statements/const/dstr/obj-ptrn-empty.js b/js/src/tests/test262/language/statements/const/dstr/obj-ptrn-empty.js
new file mode 100644
index 0000000000..56be45d381
--- /dev/null
+++ b/js/src/tests/test262/language/statements/const/dstr/obj-ptrn-empty.js
@@ -0,0 +1,36 @@
+// This file was procedurally generated from the following sources:
+// - src/dstr-binding/obj-ptrn-empty.case
+// - src/dstr-binding/default/const-stmt.template
+/*---
+description: No property access occurs for an "empty" object binding pattern (`const` statement)
+esid: sec-let-and-const-declarations-runtime-semantics-evaluation
+features: [destructuring-binding]
+flags: [generated]
+info: |
+ LexicalBinding : BindingPattern Initializer
+
+ 1. Let rhs be the result of evaluating Initializer.
+ 2. Let value be GetValue(rhs).
+ 3. ReturnIfAbrupt(value).
+ 4. Let env be the running execution context's LexicalEnvironment.
+ 5. Return the result of performing BindingInitialization for BindingPattern
+ using value and env as the arguments.
+
+ Runtime Semantics: BindingInitialization
+
+ ObjectBindingPattern : { }
+
+ 1. Return NormalCompletion(empty).
+---*/
+var accessCount = 0;
+var obj = Object.defineProperty({}, 'attr', {
+ get: function() {
+ accessCount += 1;
+ }
+});
+
+const {} = obj;
+
+assert.sameValue(accessCount, 0);
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/language/statements/const/dstr/obj-ptrn-id-get-value-err.js b/js/src/tests/test262/language/statements/const/dstr/obj-ptrn-id-get-value-err.js
new file mode 100644
index 0000000000..d419308bc1
--- /dev/null
+++ b/js/src/tests/test262/language/statements/const/dstr/obj-ptrn-id-get-value-err.js
@@ -0,0 +1,37 @@
+// This file was procedurally generated from the following sources:
+// - src/dstr-binding/obj-ptrn-id-get-value-err.case
+// - src/dstr-binding/error/const-stmt.template
+/*---
+description: Error thrown when accessing the corresponding property of the value object (`const` statement)
+esid: sec-let-and-const-declarations-runtime-semantics-evaluation
+features: [destructuring-binding]
+flags: [generated]
+info: |
+ LexicalBinding : BindingPattern Initializer
+
+ 1. Let rhs be the result of evaluating Initializer.
+ 2. Let value be GetValue(rhs).
+ 3. ReturnIfAbrupt(value).
+ 4. Let env be the running execution context's LexicalEnvironment.
+ 5. Return the result of performing BindingInitialization for BindingPattern
+ using value and env as the arguments.
+
+ 13.3.3.7 Runtime Semantics: KeyedBindingInitialization
+
+ SingleNameBinding : BindingIdentifier Initializeropt
+
+ [...]
+ 4. Let v be GetV(value, propertyName).
+ 5. ReturnIfAbrupt(v).
+---*/
+var poisonedProperty = Object.defineProperty({}, 'poisoned', {
+ get: function() {
+ throw new Test262Error();
+ }
+});
+
+assert.throws(Test262Error, function() {
+ const { poisoned } = poisonedProperty;
+});
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/language/statements/const/dstr/obj-ptrn-id-init-fn-name-arrow.js b/js/src/tests/test262/language/statements/const/dstr/obj-ptrn-id-init-fn-name-arrow.js
new file mode 100644
index 0000000000..e689e4d2e6
--- /dev/null
+++ b/js/src/tests/test262/language/statements/const/dstr/obj-ptrn-id-init-fn-name-arrow.js
@@ -0,0 +1,37 @@
+// This file was procedurally generated from the following sources:
+// - src/dstr-binding/obj-ptrn-id-init-fn-name-arrow.case
+// - src/dstr-binding/default/const-stmt.template
+/*---
+description: SingleNameBinding assigns `name` to arrow functions (`const` statement)
+esid: sec-let-and-const-declarations-runtime-semantics-evaluation
+features: [destructuring-binding]
+flags: [generated]
+info: |
+ LexicalBinding : BindingPattern Initializer
+
+ 1. Let rhs be the result of evaluating Initializer.
+ 2. Let value be GetValue(rhs).
+ 3. ReturnIfAbrupt(value).
+ 4. Let env be the running execution context's LexicalEnvironment.
+ 5. Return the result of performing BindingInitialization for BindingPattern
+ using value and env as the arguments.
+
+ 13.3.3.7 Runtime Semantics: KeyedBindingInitialization
+
+ SingleNameBinding : BindingIdentifier Initializeropt
+
+ [...]
+ 6. If Initializer is present and v is undefined, then
+ [...]
+ d. If IsAnonymousFunctionDefinition(Initializer) is true, then
+ i. Let hasNameProperty be HasOwnProperty(v, "name").
+ ii. ReturnIfAbrupt(hasNameProperty).
+ iii. If hasNameProperty is false, perform SetFunctionName(v,
+ bindingId).
+---*/
+
+const { arrow = () => {} } = {};
+
+assert.sameValue(arrow.name, 'arrow');
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/language/statements/const/dstr/obj-ptrn-id-init-fn-name-class.js b/js/src/tests/test262/language/statements/const/dstr/obj-ptrn-id-init-fn-name-class.js
new file mode 100644
index 0000000000..c56ad7e45f
--- /dev/null
+++ b/js/src/tests/test262/language/statements/const/dstr/obj-ptrn-id-init-fn-name-class.js
@@ -0,0 +1,39 @@
+// This file was procedurally generated from the following sources:
+// - src/dstr-binding/obj-ptrn-id-init-fn-name-class.case
+// - src/dstr-binding/default/const-stmt.template
+/*---
+description: SingleNameBinding assigns `name` to "anonymous" classes (`const` statement)
+esid: sec-let-and-const-declarations-runtime-semantics-evaluation
+features: [destructuring-binding]
+flags: [generated]
+info: |
+ LexicalBinding : BindingPattern Initializer
+
+ 1. Let rhs be the result of evaluating Initializer.
+ 2. Let value be GetValue(rhs).
+ 3. ReturnIfAbrupt(value).
+ 4. Let env be the running execution context's LexicalEnvironment.
+ 5. Return the result of performing BindingInitialization for BindingPattern
+ using value and env as the arguments.
+
+ 13.3.3.7 Runtime Semantics: KeyedBindingInitialization
+
+ SingleNameBinding : BindingIdentifier Initializeropt
+
+ [...]
+ 6. If Initializer is present and v is undefined, then
+ [...]
+ d. If IsAnonymousFunctionDefinition(Initializer) is true, then
+ i. Let hasNameProperty be HasOwnProperty(v, "name").
+ ii. ReturnIfAbrupt(hasNameProperty).
+ iii. If hasNameProperty is false, perform SetFunctionName(v,
+ bindingId).
+---*/
+
+const { cls = class {}, xCls = class X {}, xCls2 = class { static name() {} } } = {};
+
+assert.sameValue(cls.name, 'cls');
+assert.notSameValue(xCls.name, 'xCls');
+assert.notSameValue(xCls2.name, 'xCls2');
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/language/statements/const/dstr/obj-ptrn-id-init-fn-name-cover.js b/js/src/tests/test262/language/statements/const/dstr/obj-ptrn-id-init-fn-name-cover.js
new file mode 100644
index 0000000000..f716599c0e
--- /dev/null
+++ b/js/src/tests/test262/language/statements/const/dstr/obj-ptrn-id-init-fn-name-cover.js
@@ -0,0 +1,38 @@
+// This file was procedurally generated from the following sources:
+// - src/dstr-binding/obj-ptrn-id-init-fn-name-cover.case
+// - src/dstr-binding/default/const-stmt.template
+/*---
+description: SingleNameBinding assigns `name` to "anonymous" functions "through" cover grammar (`const` statement)
+esid: sec-let-and-const-declarations-runtime-semantics-evaluation
+features: [destructuring-binding]
+flags: [generated]
+info: |
+ LexicalBinding : BindingPattern Initializer
+
+ 1. Let rhs be the result of evaluating Initializer.
+ 2. Let value be GetValue(rhs).
+ 3. ReturnIfAbrupt(value).
+ 4. Let env be the running execution context's LexicalEnvironment.
+ 5. Return the result of performing BindingInitialization for BindingPattern
+ using value and env as the arguments.
+
+ 13.3.3.7 Runtime Semantics: KeyedBindingInitialization
+
+ SingleNameBinding : BindingIdentifier Initializeropt
+
+ [...]
+ 6. If Initializer is present and v is undefined, then
+ [...]
+ d. If IsAnonymousFunctionDefinition(Initializer) is true, then
+ i. Let hasNameProperty be HasOwnProperty(v, "name").
+ ii. ReturnIfAbrupt(hasNameProperty).
+ iii. If hasNameProperty is false, perform SetFunctionName(v,
+ bindingId).
+---*/
+
+const { cover = (function () {}), xCover = (0, function() {}) } = {};
+
+assert.sameValue(cover.name, 'cover');
+assert.notSameValue(xCover.name, 'xCover');
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/language/statements/const/dstr/obj-ptrn-id-init-fn-name-fn.js b/js/src/tests/test262/language/statements/const/dstr/obj-ptrn-id-init-fn-name-fn.js
new file mode 100644
index 0000000000..884d4ec5a4
--- /dev/null
+++ b/js/src/tests/test262/language/statements/const/dstr/obj-ptrn-id-init-fn-name-fn.js
@@ -0,0 +1,38 @@
+// This file was procedurally generated from the following sources:
+// - src/dstr-binding/obj-ptrn-id-init-fn-name-fn.case
+// - src/dstr-binding/default/const-stmt.template
+/*---
+description: SingleNameBinding assigns name to "anonymous" functions (`const` statement)
+esid: sec-let-and-const-declarations-runtime-semantics-evaluation
+features: [destructuring-binding]
+flags: [generated]
+info: |
+ LexicalBinding : BindingPattern Initializer
+
+ 1. Let rhs be the result of evaluating Initializer.
+ 2. Let value be GetValue(rhs).
+ 3. ReturnIfAbrupt(value).
+ 4. Let env be the running execution context's LexicalEnvironment.
+ 5. Return the result of performing BindingInitialization for BindingPattern
+ using value and env as the arguments.
+
+ 13.3.3.7 Runtime Semantics: KeyedBindingInitialization
+
+ SingleNameBinding : BindingIdentifier Initializeropt
+
+ [...]
+ 6. If Initializer is present and v is undefined, then
+ [...]
+ d. If IsAnonymousFunctionDefinition(Initializer) is true, then
+ i. Let hasNameProperty be HasOwnProperty(v, "name").
+ ii. ReturnIfAbrupt(hasNameProperty).
+ iii. If hasNameProperty is false, perform SetFunctionName(v,
+ bindingId).
+---*/
+
+const { fn = function () {}, xFn = function x() {} } = {};
+
+assert.sameValue(fn.name, 'fn');
+assert.notSameValue(xFn.name, 'xFn');
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/language/statements/const/dstr/obj-ptrn-id-init-fn-name-gen.js b/js/src/tests/test262/language/statements/const/dstr/obj-ptrn-id-init-fn-name-gen.js
new file mode 100644
index 0000000000..165992a539
--- /dev/null
+++ b/js/src/tests/test262/language/statements/const/dstr/obj-ptrn-id-init-fn-name-gen.js
@@ -0,0 +1,39 @@
+// This file was procedurally generated from the following sources:
+// - src/dstr-binding/obj-ptrn-id-init-fn-name-gen.case
+// - src/dstr-binding/default/const-stmt.template
+/*---
+description: SingleNameBinding assigns name to "anonymous" generator functions (`const` statement)
+esid: sec-let-and-const-declarations-runtime-semantics-evaluation
+features: [generators, destructuring-binding]
+flags: [generated]
+info: |
+ LexicalBinding : BindingPattern Initializer
+
+ 1. Let rhs be the result of evaluating Initializer.
+ 2. Let value be GetValue(rhs).
+ 3. ReturnIfAbrupt(value).
+ 4. Let env be the running execution context's LexicalEnvironment.
+ 5. Return the result of performing BindingInitialization for BindingPattern
+ using value and env as the arguments.
+
+ 13.3.3.7 Runtime Semantics: KeyedBindingInitialization
+
+ SingleNameBinding : BindingIdentifier Initializeropt
+
+ [...]
+ 6. If Initializer is present and v is undefined, then
+ [...]
+ d. If IsAnonymousFunctionDefinition(Initializer) is true, then
+ i. Let hasNameProperty be HasOwnProperty(v, "name").
+ ii. ReturnIfAbrupt(hasNameProperty).
+ iii. If hasNameProperty is false, perform SetFunctionName(v,
+ bindingId).
+
+---*/
+
+const { gen = function* () {}, xGen = function* x() {} } = {};
+
+assert.sameValue(gen.name, 'gen');
+assert.notSameValue(xGen.name, 'xGen');
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/language/statements/const/dstr/obj-ptrn-id-init-skipped.js b/js/src/tests/test262/language/statements/const/dstr/obj-ptrn-id-init-skipped.js
new file mode 100644
index 0000000000..72cf71c98d
--- /dev/null
+++ b/js/src/tests/test262/language/statements/const/dstr/obj-ptrn-id-init-skipped.js
@@ -0,0 +1,41 @@
+// This file was procedurally generated from the following sources:
+// - src/dstr-binding/obj-ptrn-id-init-skipped.case
+// - src/dstr-binding/default/const-stmt.template
+/*---
+description: Destructuring initializer is not evaluated when value is not `undefined` (`const` statement)
+esid: sec-let-and-const-declarations-runtime-semantics-evaluation
+features: [destructuring-binding]
+flags: [generated]
+info: |
+ LexicalBinding : BindingPattern Initializer
+
+ 1. Let rhs be the result of evaluating Initializer.
+ 2. Let value be GetValue(rhs).
+ 3. ReturnIfAbrupt(value).
+ 4. Let env be the running execution context's LexicalEnvironment.
+ 5. Return the result of performing BindingInitialization for BindingPattern
+ using value and env as the arguments.
+
+ 13.3.3.7 Runtime Semantics: KeyedBindingInitialization
+
+ SingleNameBinding : BindingIdentifier Initializeropt
+
+ [...]
+ 6. If Initializer is present and v is undefined, then
+ [...]
+ [...]
+---*/
+var initCount = 0;
+function counter() {
+ initCount += 1;
+}
+
+const { w = counter(), x = counter(), y = counter(), z = counter() } = { w: null, x: 0, y: false, z: '' };
+
+assert.sameValue(w, null);
+assert.sameValue(x, 0);
+assert.sameValue(y, false);
+assert.sameValue(z, '');
+assert.sameValue(initCount, 0);
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/language/statements/const/dstr/obj-ptrn-id-init-throws.js b/js/src/tests/test262/language/statements/const/dstr/obj-ptrn-id-init-throws.js
new file mode 100644
index 0000000000..934b9c874c
--- /dev/null
+++ b/js/src/tests/test262/language/statements/const/dstr/obj-ptrn-id-init-throws.js
@@ -0,0 +1,37 @@
+// This file was procedurally generated from the following sources:
+// - src/dstr-binding/obj-ptrn-id-init-throws.case
+// - src/dstr-binding/error/const-stmt.template
+/*---
+description: Error thrown when evaluating the initializer (`const` statement)
+esid: sec-let-and-const-declarations-runtime-semantics-evaluation
+features: [destructuring-binding]
+flags: [generated]
+info: |
+ LexicalBinding : BindingPattern Initializer
+
+ 1. Let rhs be the result of evaluating Initializer.
+ 2. Let value be GetValue(rhs).
+ 3. ReturnIfAbrupt(value).
+ 4. Let env be the running execution context's LexicalEnvironment.
+ 5. Return the result of performing BindingInitialization for BindingPattern
+ using value and env as the arguments.
+
+ 13.3.3.7 Runtime Semantics: KeyedBindingInitialization
+
+ SingleNameBinding : BindingIdentifier Initializeropt
+
+ [...]
+ 6. If Initializer is present and v is undefined, then
+ a. Let defaultValue be the result of evaluating Initializer.
+ b. Let v be GetValue(defaultValue).
+ c. ReturnIfAbrupt(v).
+---*/
+function thrower() {
+ throw new Test262Error();
+}
+
+assert.throws(Test262Error, function() {
+ const { x = thrower() } = {};
+});
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/language/statements/const/dstr/obj-ptrn-id-init-unresolvable.js b/js/src/tests/test262/language/statements/const/dstr/obj-ptrn-id-init-unresolvable.js
new file mode 100644
index 0000000000..08498ae163
--- /dev/null
+++ b/js/src/tests/test262/language/statements/const/dstr/obj-ptrn-id-init-unresolvable.js
@@ -0,0 +1,41 @@
+// This file was procedurally generated from the following sources:
+// - src/dstr-binding/obj-ptrn-id-init-unresolvable.case
+// - src/dstr-binding/error/const-stmt.template
+/*---
+description: Destructuring initializer is an unresolvable reference (`const` statement)
+esid: sec-let-and-const-declarations-runtime-semantics-evaluation
+features: [destructuring-binding]
+flags: [generated]
+info: |
+ LexicalBinding : BindingPattern Initializer
+
+ 1. Let rhs be the result of evaluating Initializer.
+ 2. Let value be GetValue(rhs).
+ 3. ReturnIfAbrupt(value).
+ 4. Let env be the running execution context's LexicalEnvironment.
+ 5. Return the result of performing BindingInitialization for BindingPattern
+ using value and env as the arguments.
+
+ 13.3.3.7 Runtime Semantics: KeyedBindingInitialization
+
+ SingleNameBinding : BindingIdentifier Initializeropt
+
+ [...]
+ 6. If Initializer is present and v is undefined, then
+ a. Let defaultValue be the result of evaluating Initializer.
+ b. Let v be GetValue(defaultValue).
+ c. ReturnIfAbrupt(v).
+
+ 6.2.3.1 GetValue (V)
+
+ 1. ReturnIfAbrupt(V).
+ 2. If Type(V) is not Reference, return V.
+ 3. Let base be GetBase(V).
+ 4. If IsUnresolvableReference(V), throw a ReferenceError exception.
+---*/
+
+assert.throws(ReferenceError, function() {
+ const { x = unresolvableReference } = {};
+});
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/language/statements/const/dstr/obj-ptrn-id-trailing-comma.js b/js/src/tests/test262/language/statements/const/dstr/obj-ptrn-id-trailing-comma.js
new file mode 100644
index 0000000000..6a9c17ebe8
--- /dev/null
+++ b/js/src/tests/test262/language/statements/const/dstr/obj-ptrn-id-trailing-comma.js
@@ -0,0 +1,31 @@
+// This file was procedurally generated from the following sources:
+// - src/dstr-binding/obj-ptrn-id-trailing-comma.case
+// - src/dstr-binding/default/const-stmt.template
+/*---
+description: Trailing comma is allowed following BindingPropertyList (`const` statement)
+esid: sec-let-and-const-declarations-runtime-semantics-evaluation
+features: [destructuring-binding]
+flags: [generated]
+info: |
+ LexicalBinding : BindingPattern Initializer
+
+ 1. Let rhs be the result of evaluating Initializer.
+ 2. Let value be GetValue(rhs).
+ 3. ReturnIfAbrupt(value).
+ 4. Let env be the running execution context's LexicalEnvironment.
+ 5. Return the result of performing BindingInitialization for BindingPattern
+ using value and env as the arguments.
+
+ 13.3.3 Destructuring Binding Patterns
+
+ ObjectBindingPattern[Yield] :
+ { }
+ { BindingPropertyList[?Yield] }
+ { BindingPropertyList[?Yield] , }
+---*/
+
+const { x, } = { x: 23 };
+
+assert.sameValue(x, 23);
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/language/statements/const/dstr/obj-ptrn-list-err.js b/js/src/tests/test262/language/statements/const/dstr/obj-ptrn-list-err.js
new file mode 100644
index 0000000000..7792fd2c1e
--- /dev/null
+++ b/js/src/tests/test262/language/statements/const/dstr/obj-ptrn-list-err.js
@@ -0,0 +1,38 @@
+// This file was procedurally generated from the following sources:
+// - src/dstr-binding/obj-ptrn-list-err.case
+// - src/dstr-binding/error/const-stmt.template
+/*---
+description: Binding property list evaluation is interrupted by an abrupt completion (`const` statement)
+esid: sec-let-and-const-declarations-runtime-semantics-evaluation
+features: [destructuring-binding]
+flags: [generated]
+info: |
+ LexicalBinding : BindingPattern Initializer
+
+ 1. Let rhs be the result of evaluating Initializer.
+ 2. Let value be GetValue(rhs).
+ 3. ReturnIfAbrupt(value).
+ 4. Let env be the running execution context's LexicalEnvironment.
+ 5. Return the result of performing BindingInitialization for BindingPattern
+ using value and env as the arguments.
+
+ 13.3.3.5 Runtime Semantics: BindingInitialization
+
+ BindingPropertyList : BindingPropertyList , BindingProperty
+
+ 1. Let status be the result of performing BindingInitialization for
+ BindingPropertyList using value and environment as arguments.
+ 2. ReturnIfAbrupt(status).
+---*/
+var initCount = 0;
+function thrower() {
+ throw new Test262Error();
+}
+
+assert.throws(Test262Error, function() {
+ const { a, b = thrower(), c = ++initCount } = {};
+});
+
+assert.sameValue(initCount, 0);
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/language/statements/const/dstr/obj-ptrn-prop-ary-init.js b/js/src/tests/test262/language/statements/const/dstr/obj-ptrn-prop-ary-init.js
new file mode 100644
index 0000000000..42a7c1c7fa
--- /dev/null
+++ b/js/src/tests/test262/language/statements/const/dstr/obj-ptrn-prop-ary-init.js
@@ -0,0 +1,40 @@
+// This file was procedurally generated from the following sources:
+// - src/dstr-binding/obj-ptrn-prop-ary-init.case
+// - src/dstr-binding/default/const-stmt.template
+/*---
+description: Object binding pattern with "nested" array binding pattern using initializer (`const` statement)
+esid: sec-let-and-const-declarations-runtime-semantics-evaluation
+features: [destructuring-binding]
+flags: [generated]
+info: |
+ LexicalBinding : BindingPattern Initializer
+
+ 1. Let rhs be the result of evaluating Initializer.
+ 2. Let value be GetValue(rhs).
+ 3. ReturnIfAbrupt(value).
+ 4. Let env be the running execution context's LexicalEnvironment.
+ 5. Return the result of performing BindingInitialization for BindingPattern
+ using value and env as the arguments.
+
+ 13.3.3.7 Runtime Semantics: KeyedBindingInitialization
+
+ [...]
+ 3. If Initializer is present and v is undefined, then
+ a. Let defaultValue be the result of evaluating Initializer.
+ b. Let v be GetValue(defaultValue).
+ c. ReturnIfAbrupt(v).
+ 4. Return the result of performing BindingInitialization for BindingPattern
+ passing v and environment as arguments.
+---*/
+
+const { w: [x, y, z] = [4, 5, 6] } = {};
+
+assert.sameValue(x, 4);
+assert.sameValue(y, 5);
+assert.sameValue(z, 6);
+
+assert.throws(ReferenceError, function() {
+ w;
+});
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/language/statements/const/dstr/obj-ptrn-prop-ary-trailing-comma.js b/js/src/tests/test262/language/statements/const/dstr/obj-ptrn-prop-ary-trailing-comma.js
new file mode 100644
index 0000000000..f0d021ba40
--- /dev/null
+++ b/js/src/tests/test262/language/statements/const/dstr/obj-ptrn-prop-ary-trailing-comma.js
@@ -0,0 +1,31 @@
+// This file was procedurally generated from the following sources:
+// - src/dstr-binding/obj-ptrn-prop-ary-trailing-comma.case
+// - src/dstr-binding/default/const-stmt.template
+/*---
+description: Trailing comma is allowed following BindingPropertyList (`const` statement)
+esid: sec-let-and-const-declarations-runtime-semantics-evaluation
+features: [destructuring-binding]
+flags: [generated]
+info: |
+ LexicalBinding : BindingPattern Initializer
+
+ 1. Let rhs be the result of evaluating Initializer.
+ 2. Let value be GetValue(rhs).
+ 3. ReturnIfAbrupt(value).
+ 4. Let env be the running execution context's LexicalEnvironment.
+ 5. Return the result of performing BindingInitialization for BindingPattern
+ using value and env as the arguments.
+
+ 13.3.3 Destructuring Binding Patterns
+
+ ObjectBindingPattern[Yield] :
+ { }
+ { BindingPropertyList[?Yield] }
+ { BindingPropertyList[?Yield] , }
+---*/
+
+const { x: [y], } = { x: [45] };
+
+assert.sameValue(y,45);
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/language/statements/const/dstr/obj-ptrn-prop-ary-value-null.js b/js/src/tests/test262/language/statements/const/dstr/obj-ptrn-prop-ary-value-null.js
new file mode 100644
index 0000000000..b0d8ba7aff
--- /dev/null
+++ b/js/src/tests/test262/language/statements/const/dstr/obj-ptrn-prop-ary-value-null.js
@@ -0,0 +1,32 @@
+// This file was procedurally generated from the following sources:
+// - src/dstr-binding/obj-ptrn-prop-ary-value-null.case
+// - src/dstr-binding/error/const-stmt.template
+/*---
+description: Object binding pattern with "nested" array binding pattern taking the `null` value (`const` statement)
+esid: sec-let-and-const-declarations-runtime-semantics-evaluation
+features: [destructuring-binding]
+flags: [generated]
+info: |
+ LexicalBinding : BindingPattern Initializer
+
+ 1. Let rhs be the result of evaluating Initializer.
+ 2. Let value be GetValue(rhs).
+ 3. ReturnIfAbrupt(value).
+ 4. Let env be the running execution context's LexicalEnvironment.
+ 5. Return the result of performing BindingInitialization for BindingPattern
+ using value and env as the arguments.
+
+ 13.3.3.7 Runtime Semantics: KeyedBindingInitialization
+
+ [...]
+ 3. If Initializer is present and v is undefined, then
+ [...]
+ 4. Return the result of performing BindingInitialization for BindingPattern
+ passing v and environment as arguments.
+---*/
+
+assert.throws(TypeError, function() {
+ const { w: [x, y, z] = [4, 5, 6] } = { w: null };
+});
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/language/statements/const/dstr/obj-ptrn-prop-ary.js b/js/src/tests/test262/language/statements/const/dstr/obj-ptrn-prop-ary.js
new file mode 100644
index 0000000000..0ff0c2fc95
--- /dev/null
+++ b/js/src/tests/test262/language/statements/const/dstr/obj-ptrn-prop-ary.js
@@ -0,0 +1,38 @@
+// This file was procedurally generated from the following sources:
+// - src/dstr-binding/obj-ptrn-prop-ary.case
+// - src/dstr-binding/default/const-stmt.template
+/*---
+description: Object binding pattern with "nested" array binding pattern not using initializer (`const` statement)
+esid: sec-let-and-const-declarations-runtime-semantics-evaluation
+features: [destructuring-binding]
+flags: [generated]
+info: |
+ LexicalBinding : BindingPattern Initializer
+
+ 1. Let rhs be the result of evaluating Initializer.
+ 2. Let value be GetValue(rhs).
+ 3. ReturnIfAbrupt(value).
+ 4. Let env be the running execution context's LexicalEnvironment.
+ 5. Return the result of performing BindingInitialization for BindingPattern
+ using value and env as the arguments.
+
+ 13.3.3.7 Runtime Semantics: KeyedBindingInitialization
+
+ [...]
+ 3. If Initializer is present and v is undefined, then
+ [...]
+ 4. Return the result of performing BindingInitialization for BindingPattern
+ passing v and environment as arguments.
+---*/
+
+const { w: [x, y, z] = [4, 5, 6] } = { w: [7, undefined, ] };
+
+assert.sameValue(x, 7);
+assert.sameValue(y, undefined);
+assert.sameValue(z, undefined);
+
+assert.throws(ReferenceError, function() {
+ w;
+});
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/language/statements/const/dstr/obj-ptrn-prop-eval-err.js b/js/src/tests/test262/language/statements/const/dstr/obj-ptrn-prop-eval-err.js
new file mode 100644
index 0000000000..9681417aab
--- /dev/null
+++ b/js/src/tests/test262/language/statements/const/dstr/obj-ptrn-prop-eval-err.js
@@ -0,0 +1,34 @@
+// This file was procedurally generated from the following sources:
+// - src/dstr-binding/obj-ptrn-prop-eval-err.case
+// - src/dstr-binding/error/const-stmt.template
+/*---
+description: Evaluation of property name returns an abrupt completion (`const` statement)
+esid: sec-let-and-const-declarations-runtime-semantics-evaluation
+features: [destructuring-binding]
+flags: [generated]
+info: |
+ LexicalBinding : BindingPattern Initializer
+
+ 1. Let rhs be the result of evaluating Initializer.
+ 2. Let value be GetValue(rhs).
+ 3. ReturnIfAbrupt(value).
+ 4. Let env be the running execution context's LexicalEnvironment.
+ 5. Return the result of performing BindingInitialization for BindingPattern
+ using value and env as the arguments.
+
+ 13.3.3.5 Runtime Semantics: BindingInitialization
+
+ BindingProperty : PropertyName : BindingElement
+
+ 1. Let P be the result of evaluating PropertyName
+ 2. ReturnIfAbrupt(P).
+---*/
+function thrower() {
+ throw new Test262Error();
+}
+
+assert.throws(Test262Error, function() {
+ const { [thrower()]: x } = {};
+});
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/language/statements/const/dstr/obj-ptrn-prop-id-get-value-err.js b/js/src/tests/test262/language/statements/const/dstr/obj-ptrn-prop-id-get-value-err.js
new file mode 100644
index 0000000000..d267102420
--- /dev/null
+++ b/js/src/tests/test262/language/statements/const/dstr/obj-ptrn-prop-id-get-value-err.js
@@ -0,0 +1,39 @@
+// This file was procedurally generated from the following sources:
+// - src/dstr-binding/obj-ptrn-prop-id-get-value-err.case
+// - src/dstr-binding/error/const-stmt.template
+/*---
+description: Error thrown when accessing the corresponding property of the value object (`const` statement)
+esid: sec-let-and-const-declarations-runtime-semantics-evaluation
+features: [destructuring-binding]
+flags: [generated]
+info: |
+ LexicalBinding : BindingPattern Initializer
+
+ 1. Let rhs be the result of evaluating Initializer.
+ 2. Let value be GetValue(rhs).
+ 3. ReturnIfAbrupt(value).
+ 4. Let env be the running execution context's LexicalEnvironment.
+ 5. Return the result of performing BindingInitialization for BindingPattern
+ using value and env as the arguments.
+
+ 13.3.3.7 Runtime Semantics: KeyedBindingInitialization
+
+ BindingElement : BindingPattern Initializeropt
+
+ 1. Let v be GetV(value, propertyName).
+ 2. ReturnIfAbrupt(v).
+---*/
+var initEvalCount = 0;
+var poisonedProperty = Object.defineProperty({}, 'poisoned', {
+ get: function() {
+ throw new Test262Error();
+ }
+});
+
+assert.throws(Test262Error, function() {
+ const { poisoned: x = ++initEvalCount } = poisonedProperty;
+});
+
+assert.sameValue(initEvalCount, 0);
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/language/statements/const/dstr/obj-ptrn-prop-id-init-skipped.js b/js/src/tests/test262/language/statements/const/dstr/obj-ptrn-prop-id-init-skipped.js
new file mode 100644
index 0000000000..1e2cf50e48
--- /dev/null
+++ b/js/src/tests/test262/language/statements/const/dstr/obj-ptrn-prop-id-init-skipped.js
@@ -0,0 +1,53 @@
+// This file was procedurally generated from the following sources:
+// - src/dstr-binding/obj-ptrn-prop-id-init-skipped.case
+// - src/dstr-binding/default/const-stmt.template
+/*---
+description: Destructuring initializer is not evaluated when value is not `undefined` (`const` statement)
+esid: sec-let-and-const-declarations-runtime-semantics-evaluation
+features: [destructuring-binding]
+flags: [generated]
+info: |
+ LexicalBinding : BindingPattern Initializer
+
+ 1. Let rhs be the result of evaluating Initializer.
+ 2. Let value be GetValue(rhs).
+ 3. ReturnIfAbrupt(value).
+ 4. Let env be the running execution context's LexicalEnvironment.
+ 5. Return the result of performing BindingInitialization for BindingPattern
+ using value and env as the arguments.
+
+ 13.3.3.7 Runtime Semantics: KeyedBindingInitialization
+
+ BindingElement : BindingPattern Initializeropt
+
+ [...]
+ 3. If Initializer is present and v is undefined, then
+ [...]
+---*/
+var initCount = 0;
+function counter() {
+ initCount += 1;
+}
+
+const { s: t = counter(), u: v = counter(), w: x = counter(), y: z = counter() } = { s: null, u: 0, w: false, y: '' };
+
+assert.sameValue(t, null);
+assert.sameValue(v, 0);
+assert.sameValue(x, false);
+assert.sameValue(z, '');
+assert.sameValue(initCount, 0);
+
+assert.throws(ReferenceError, function() {
+ s;
+});
+assert.throws(ReferenceError, function() {
+ u;
+});
+assert.throws(ReferenceError, function() {
+ w;
+});
+assert.throws(ReferenceError, function() {
+ y;
+});
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/language/statements/const/dstr/obj-ptrn-prop-id-init-throws.js b/js/src/tests/test262/language/statements/const/dstr/obj-ptrn-prop-id-init-throws.js
new file mode 100644
index 0000000000..60c9865749
--- /dev/null
+++ b/js/src/tests/test262/language/statements/const/dstr/obj-ptrn-prop-id-init-throws.js
@@ -0,0 +1,37 @@
+// This file was procedurally generated from the following sources:
+// - src/dstr-binding/obj-ptrn-prop-id-init-throws.case
+// - src/dstr-binding/error/const-stmt.template
+/*---
+description: Error thrown when evaluating the initializer (`const` statement)
+esid: sec-let-and-const-declarations-runtime-semantics-evaluation
+features: [destructuring-binding]
+flags: [generated]
+info: |
+ LexicalBinding : BindingPattern Initializer
+
+ 1. Let rhs be the result of evaluating Initializer.
+ 2. Let value be GetValue(rhs).
+ 3. ReturnIfAbrupt(value).
+ 4. Let env be the running execution context's LexicalEnvironment.
+ 5. Return the result of performing BindingInitialization for BindingPattern
+ using value and env as the arguments.
+
+ 13.3.3.7 Runtime Semantics: KeyedBindingInitialization
+
+ BindingElement : BindingPattern Initializeropt
+
+ [...]
+ 3. If Initializer is present and v is undefined, then
+ a. Let defaultValue be the result of evaluating Initializer.
+ b. Let v be GetValue(defaultValue).
+ c. ReturnIfAbrupt(v).
+---*/
+function thrower() {
+ throw new Test262Error();
+}
+
+assert.throws(Test262Error, function() {
+ const { x: y = thrower() } = {};
+});
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/language/statements/const/dstr/obj-ptrn-prop-id-init-unresolvable.js b/js/src/tests/test262/language/statements/const/dstr/obj-ptrn-prop-id-init-unresolvable.js
new file mode 100644
index 0000000000..2e5a55585b
--- /dev/null
+++ b/js/src/tests/test262/language/statements/const/dstr/obj-ptrn-prop-id-init-unresolvable.js
@@ -0,0 +1,41 @@
+// This file was procedurally generated from the following sources:
+// - src/dstr-binding/obj-ptrn-prop-id-init-unresolvable.case
+// - src/dstr-binding/error/const-stmt.template
+/*---
+description: Destructuring initializer is an unresolvable reference (`const` statement)
+esid: sec-let-and-const-declarations-runtime-semantics-evaluation
+features: [destructuring-binding]
+flags: [generated]
+info: |
+ LexicalBinding : BindingPattern Initializer
+
+ 1. Let rhs be the result of evaluating Initializer.
+ 2. Let value be GetValue(rhs).
+ 3. ReturnIfAbrupt(value).
+ 4. Let env be the running execution context's LexicalEnvironment.
+ 5. Return the result of performing BindingInitialization for BindingPattern
+ using value and env as the arguments.
+
+ 13.3.3.7 Runtime Semantics: KeyedBindingInitialization
+
+ BindingElement : BindingPattern Initializeropt
+
+ [...]
+ 3. If Initializer is present and v is undefined, then
+ a. Let defaultValue be the result of evaluating Initializer.
+ b. Let v be GetValue(defaultValue).
+ c. ReturnIfAbrupt(v).
+
+ 6.2.3.1 GetValue (V)
+
+ 1. ReturnIfAbrupt(V).
+ 2. If Type(V) is not Reference, return V.
+ 3. Let base be GetBase(V).
+ 4. If IsUnresolvableReference(V), throw a ReferenceError exception.
+---*/
+
+assert.throws(ReferenceError, function() {
+ const { x: y = unresolvableReference } = {};
+});
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/language/statements/const/dstr/obj-ptrn-prop-id-init.js b/js/src/tests/test262/language/statements/const/dstr/obj-ptrn-prop-id-init.js
new file mode 100644
index 0000000000..44db061bd1
--- /dev/null
+++ b/js/src/tests/test262/language/statements/const/dstr/obj-ptrn-prop-id-init.js
@@ -0,0 +1,34 @@
+// This file was procedurally generated from the following sources:
+// - src/dstr-binding/obj-ptrn-prop-id-init.case
+// - src/dstr-binding/default/const-stmt.template
+/*---
+description: Binding as specified via property name, identifier, and initializer (`const` statement)
+esid: sec-let-and-const-declarations-runtime-semantics-evaluation
+features: [destructuring-binding]
+flags: [generated]
+info: |
+ LexicalBinding : BindingPattern Initializer
+
+ 1. Let rhs be the result of evaluating Initializer.
+ 2. Let value be GetValue(rhs).
+ 3. ReturnIfAbrupt(value).
+ 4. Let env be the running execution context's LexicalEnvironment.
+ 5. Return the result of performing BindingInitialization for BindingPattern
+ using value and env as the arguments.
+
+ 13.3.3.7 Runtime Semantics: KeyedBindingInitialization
+
+ SingleNameBinding : BindingIdentifier Initializeropt
+
+ [...]
+ 8. Return InitializeReferencedBinding(lhs, v).
+---*/
+
+const { x: y = 33 } = { };
+
+assert.sameValue(y, 33);
+assert.throws(ReferenceError, function() {
+ x;
+});
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/language/statements/const/dstr/obj-ptrn-prop-id-trailing-comma.js b/js/src/tests/test262/language/statements/const/dstr/obj-ptrn-prop-id-trailing-comma.js
new file mode 100644
index 0000000000..709c49e24c
--- /dev/null
+++ b/js/src/tests/test262/language/statements/const/dstr/obj-ptrn-prop-id-trailing-comma.js
@@ -0,0 +1,35 @@
+// This file was procedurally generated from the following sources:
+// - src/dstr-binding/obj-ptrn-prop-id-trailing-comma.case
+// - src/dstr-binding/default/const-stmt.template
+/*---
+description: Trailing comma is allowed following BindingPropertyList (`const` statement)
+esid: sec-let-and-const-declarations-runtime-semantics-evaluation
+features: [destructuring-binding]
+flags: [generated]
+info: |
+ LexicalBinding : BindingPattern Initializer
+
+ 1. Let rhs be the result of evaluating Initializer.
+ 2. Let value be GetValue(rhs).
+ 3. ReturnIfAbrupt(value).
+ 4. Let env be the running execution context's LexicalEnvironment.
+ 5. Return the result of performing BindingInitialization for BindingPattern
+ using value and env as the arguments.
+
+ 13.3.3 Destructuring Binding Patterns
+
+ ObjectBindingPattern[Yield] :
+ { }
+ { BindingPropertyList[?Yield] }
+ { BindingPropertyList[?Yield] , }
+---*/
+
+const { x: y, } = { x: 23 };
+
+assert.sameValue(y, 23);
+
+assert.throws(ReferenceError, function() {
+ x;
+});
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/language/statements/const/dstr/obj-ptrn-prop-id.js b/js/src/tests/test262/language/statements/const/dstr/obj-ptrn-prop-id.js
new file mode 100644
index 0000000000..28b4a928ec
--- /dev/null
+++ b/js/src/tests/test262/language/statements/const/dstr/obj-ptrn-prop-id.js
@@ -0,0 +1,34 @@
+// This file was procedurally generated from the following sources:
+// - src/dstr-binding/obj-ptrn-prop-id.case
+// - src/dstr-binding/default/const-stmt.template
+/*---
+description: Binding as specified via property name and identifier (`const` statement)
+esid: sec-let-and-const-declarations-runtime-semantics-evaluation
+features: [destructuring-binding]
+flags: [generated]
+info: |
+ LexicalBinding : BindingPattern Initializer
+
+ 1. Let rhs be the result of evaluating Initializer.
+ 2. Let value be GetValue(rhs).
+ 3. ReturnIfAbrupt(value).
+ 4. Let env be the running execution context's LexicalEnvironment.
+ 5. Return the result of performing BindingInitialization for BindingPattern
+ using value and env as the arguments.
+
+ 13.3.3.7 Runtime Semantics: KeyedBindingInitialization
+
+ SingleNameBinding : BindingIdentifier Initializeropt
+
+ [...]
+ 8. Return InitializeReferencedBinding(lhs, v).
+---*/
+
+const { x: y } = { x: 23 };
+
+assert.sameValue(y, 23);
+assert.throws(ReferenceError, function() {
+ x;
+});
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/language/statements/const/dstr/obj-ptrn-prop-obj-init.js b/js/src/tests/test262/language/statements/const/dstr/obj-ptrn-prop-obj-init.js
new file mode 100644
index 0000000000..1815863805
--- /dev/null
+++ b/js/src/tests/test262/language/statements/const/dstr/obj-ptrn-prop-obj-init.js
@@ -0,0 +1,40 @@
+// This file was procedurally generated from the following sources:
+// - src/dstr-binding/obj-ptrn-prop-obj-init.case
+// - src/dstr-binding/default/const-stmt.template
+/*---
+description: Object binding pattern with "nested" object binding pattern using initializer (`const` statement)
+esid: sec-let-and-const-declarations-runtime-semantics-evaluation
+features: [destructuring-binding]
+flags: [generated]
+info: |
+ LexicalBinding : BindingPattern Initializer
+
+ 1. Let rhs be the result of evaluating Initializer.
+ 2. Let value be GetValue(rhs).
+ 3. ReturnIfAbrupt(value).
+ 4. Let env be the running execution context's LexicalEnvironment.
+ 5. Return the result of performing BindingInitialization for BindingPattern
+ using value and env as the arguments.
+
+ 13.3.3.7 Runtime Semantics: KeyedBindingInitialization
+
+ [...]
+ 3. If Initializer is present and v is undefined, then
+ a. Let defaultValue be the result of evaluating Initializer.
+ b. Let v be GetValue(defaultValue).
+ c. ReturnIfAbrupt(v).
+ 4. Return the result of performing BindingInitialization for BindingPattern
+ passing v and environment as arguments.
+---*/
+
+const { w: { x, y, z } = { x: 4, y: 5, z: 6 } } = { w: undefined };
+
+assert.sameValue(x, 4);
+assert.sameValue(y, 5);
+assert.sameValue(z, 6);
+
+assert.throws(ReferenceError, function() {
+ w;
+});
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/language/statements/const/dstr/obj-ptrn-prop-obj-value-null.js b/js/src/tests/test262/language/statements/const/dstr/obj-ptrn-prop-obj-value-null.js
new file mode 100644
index 0000000000..39540199ef
--- /dev/null
+++ b/js/src/tests/test262/language/statements/const/dstr/obj-ptrn-prop-obj-value-null.js
@@ -0,0 +1,32 @@
+// This file was procedurally generated from the following sources:
+// - src/dstr-binding/obj-ptrn-prop-obj-value-null.case
+// - src/dstr-binding/error/const-stmt.template
+/*---
+description: Object binding pattern with "nested" object binding pattern taking the `null` value (`const` statement)
+esid: sec-let-and-const-declarations-runtime-semantics-evaluation
+features: [destructuring-binding]
+flags: [generated]
+info: |
+ LexicalBinding : BindingPattern Initializer
+
+ 1. Let rhs be the result of evaluating Initializer.
+ 2. Let value be GetValue(rhs).
+ 3. ReturnIfAbrupt(value).
+ 4. Let env be the running execution context's LexicalEnvironment.
+ 5. Return the result of performing BindingInitialization for BindingPattern
+ using value and env as the arguments.
+
+ 13.3.3.7 Runtime Semantics: KeyedBindingInitialization
+
+ [...]
+ 3. If Initializer is present and v is undefined, then
+ [...]
+ 4. Return the result of performing BindingInitialization for BindingPattern
+ passing v and environment as arguments.
+---*/
+
+assert.throws(TypeError, function() {
+ const { w: { x, y, z } = { x: 4, y: 5, z: 6 } } = { w: null };
+});
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/language/statements/const/dstr/obj-ptrn-prop-obj-value-undef.js b/js/src/tests/test262/language/statements/const/dstr/obj-ptrn-prop-obj-value-undef.js
new file mode 100644
index 0000000000..9d8d4fcac1
--- /dev/null
+++ b/js/src/tests/test262/language/statements/const/dstr/obj-ptrn-prop-obj-value-undef.js
@@ -0,0 +1,32 @@
+// This file was procedurally generated from the following sources:
+// - src/dstr-binding/obj-ptrn-prop-obj-value-undef.case
+// - src/dstr-binding/error/const-stmt.template
+/*---
+description: Object binding pattern with "nested" object binding pattern taking the `null` value (`const` statement)
+esid: sec-let-and-const-declarations-runtime-semantics-evaluation
+features: [destructuring-binding]
+flags: [generated]
+info: |
+ LexicalBinding : BindingPattern Initializer
+
+ 1. Let rhs be the result of evaluating Initializer.
+ 2. Let value be GetValue(rhs).
+ 3. ReturnIfAbrupt(value).
+ 4. Let env be the running execution context's LexicalEnvironment.
+ 5. Return the result of performing BindingInitialization for BindingPattern
+ using value and env as the arguments.
+
+ 13.3.3.7 Runtime Semantics: KeyedBindingInitialization
+
+ [...]
+ 3. If Initializer is present and v is undefined, then
+ [...]
+ 4. Return the result of performing BindingInitialization for BindingPattern
+ passing v and environment as arguments.
+---*/
+
+assert.throws(TypeError, function() {
+ const { w: { x, y, z } = undefined } = { };
+});
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/language/statements/const/dstr/obj-ptrn-prop-obj.js b/js/src/tests/test262/language/statements/const/dstr/obj-ptrn-prop-obj.js
new file mode 100644
index 0000000000..b9b7368ccb
--- /dev/null
+++ b/js/src/tests/test262/language/statements/const/dstr/obj-ptrn-prop-obj.js
@@ -0,0 +1,38 @@
+// This file was procedurally generated from the following sources:
+// - src/dstr-binding/obj-ptrn-prop-obj.case
+// - src/dstr-binding/default/const-stmt.template
+/*---
+description: Object binding pattern with "nested" object binding pattern not using initializer (`const` statement)
+esid: sec-let-and-const-declarations-runtime-semantics-evaluation
+features: [destructuring-binding]
+flags: [generated]
+info: |
+ LexicalBinding : BindingPattern Initializer
+
+ 1. Let rhs be the result of evaluating Initializer.
+ 2. Let value be GetValue(rhs).
+ 3. ReturnIfAbrupt(value).
+ 4. Let env be the running execution context's LexicalEnvironment.
+ 5. Return the result of performing BindingInitialization for BindingPattern
+ using value and env as the arguments.
+
+ 13.3.3.7 Runtime Semantics: KeyedBindingInitialization
+
+ [...]
+ 3. If Initializer is present and v is undefined, then
+ [...]
+ 4. Return the result of performing BindingInitialization for BindingPattern
+ passing v and environment as arguments.
+---*/
+
+const { w: { x, y, z } = { x: 4, y: 5, z: 6 } } = { w: { x: undefined, z: 7 } };
+
+assert.sameValue(x, undefined);
+assert.sameValue(y, undefined);
+assert.sameValue(z, 7);
+
+assert.throws(ReferenceError, function() {
+ w;
+});
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/language/statements/const/dstr/obj-ptrn-rest-getter.js b/js/src/tests/test262/language/statements/const/dstr/obj-ptrn-rest-getter.js
new file mode 100644
index 0000000000..2c03e4a31d
--- /dev/null
+++ b/js/src/tests/test262/language/statements/const/dstr/obj-ptrn-rest-getter.js
@@ -0,0 +1,33 @@
+// This file was procedurally generated from the following sources:
+// - src/dstr-binding/obj-ptrn-rest-getter.case
+// - src/dstr-binding/default/const-stmt.template
+/*---
+description: Getter is called when obj is being deconstructed to a rest Object (`const` statement)
+esid: sec-let-and-const-declarations-runtime-semantics-evaluation
+features: [object-rest, destructuring-binding]
+flags: [generated]
+includes: [propertyHelper.js]
+info: |
+ LexicalBinding : BindingPattern Initializer
+
+ 1. Let rhs be the result of evaluating Initializer.
+ 2. Let value be GetValue(rhs).
+ 3. ReturnIfAbrupt(value).
+ 4. Let env be the running execution context's LexicalEnvironment.
+ 5. Return the result of performing BindingInitialization for BindingPattern
+ using value and env as the arguments.
+---*/
+var count = 0;
+
+const {...x} = { get v() { count++; return 2; } };
+
+assert.sameValue(count, 1);
+
+verifyProperty(x, "v", {
+ enumerable: true,
+ writable: true,
+ configurable: true,
+ value: 2
+});
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/language/statements/const/dstr/obj-ptrn-rest-skip-non-enumerable.js b/js/src/tests/test262/language/statements/const/dstr/obj-ptrn-rest-skip-non-enumerable.js
new file mode 100644
index 0000000000..6ee26b1ec3
--- /dev/null
+++ b/js/src/tests/test262/language/statements/const/dstr/obj-ptrn-rest-skip-non-enumerable.js
@@ -0,0 +1,41 @@
+// This file was procedurally generated from the following sources:
+// - src/dstr-binding/obj-ptrn-rest-skip-non-enumerable.case
+// - src/dstr-binding/default/const-stmt.template
+/*---
+description: Rest object doesn't contain non-enumerable properties (`const` statement)
+esid: sec-let-and-const-declarations-runtime-semantics-evaluation
+features: [object-rest, destructuring-binding]
+flags: [generated]
+includes: [propertyHelper.js]
+info: |
+ LexicalBinding : BindingPattern Initializer
+
+ 1. Let rhs be the result of evaluating Initializer.
+ 2. Let value be GetValue(rhs).
+ 3. ReturnIfAbrupt(value).
+ 4. Let env be the running execution context's LexicalEnvironment.
+ 5. Return the result of performing BindingInitialization for BindingPattern
+ using value and env as the arguments.
+---*/
+var o = {a: 3, b: 4};
+Object.defineProperty(o, "x", { value: 4, enumerable: false });
+
+const {...rest} = o;
+
+assert.sameValue(rest.x, undefined);
+
+verifyProperty(rest, "a", {
+ enumerable: true,
+ writable: true,
+ configurable: true,
+ value: 3
+});
+
+verifyProperty(rest, "b", {
+ enumerable: true,
+ writable: true,
+ configurable: true,
+ value: 4
+});
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/language/statements/const/dstr/obj-ptrn-rest-val-obj.js b/js/src/tests/test262/language/statements/const/dstr/obj-ptrn-rest-val-obj.js
new file mode 100644
index 0000000000..190851e87a
--- /dev/null
+++ b/js/src/tests/test262/language/statements/const/dstr/obj-ptrn-rest-val-obj.js
@@ -0,0 +1,40 @@
+// This file was procedurally generated from the following sources:
+// - src/dstr-binding/obj-ptrn-rest-val-obj.case
+// - src/dstr-binding/default/const-stmt.template
+/*---
+description: Rest object contains just unextracted data (`const` statement)
+esid: sec-let-and-const-declarations-runtime-semantics-evaluation
+features: [object-rest, destructuring-binding]
+flags: [generated]
+includes: [propertyHelper.js]
+info: |
+ LexicalBinding : BindingPattern Initializer
+
+ 1. Let rhs be the result of evaluating Initializer.
+ 2. Let value be GetValue(rhs).
+ 3. ReturnIfAbrupt(value).
+ 4. Let env be the running execution context's LexicalEnvironment.
+ 5. Return the result of performing BindingInitialization for BindingPattern
+ using value and env as the arguments.
+---*/
+
+const {a, b, ...rest} = {x: 1, y: 2, a: 5, b: 3};
+
+assert.sameValue(rest.a, undefined);
+assert.sameValue(rest.b, undefined);
+
+verifyProperty(rest, "x", {
+ enumerable: true,
+ writable: true,
+ configurable: true,
+ value: 1
+});
+
+verifyProperty(rest, "y", {
+ enumerable: true,
+ writable: true,
+ configurable: true,
+ value: 2
+});
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/language/statements/const/dstr/shell.js b/js/src/tests/test262/language/statements/const/dstr/shell.js
new file mode 100644
index 0000000000..e69de29bb2
--- /dev/null
+++ b/js/src/tests/test262/language/statements/const/dstr/shell.js