Adding upstream version 115.7.0esr.upstream/115.7.0esrupstream

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

2 files changed, 2408 insertions, 0 deletions

diff --git a/devtools/client/debugger/src/workers/pretty-print/tests/__snapshots__/prettyFast.spec.js.snap b/devtools/client/debugger/src/workers/pretty-print/tests/__snapshots__/prettyFast.spec.js.snap
new file mode 100644
index 0000000000..498bee267e
--- /dev/null
+++ b/devtools/client/debugger/src/workers/pretty-print/tests/__snapshots__/prettyFast.spec.js.snap
@@ -0,0 +1,1974 @@
+// Jest Snapshot v1, https://goo.gl/fbAQLP
+
+exports[`ASI return 1`] = `
+"function f() {
+  return
+  {
+  }
+}
+"
+`;
+
+exports[`ASI return 2`] = `
+Array [
+  "(1, 0) -> (1, 0)",
+  "(1, 9) -> (1, 9)",
+  "(1, 10) -> (1, 10)",
+  "(1, 11) -> (1, 11)",
+  "(1, 13) -> (1, 13)",
+  "(2, 2) -> (2, 13)",
+  "(3, 2) -> (3, 13)",
+  "(4, 2) -> (3, 14)",
+  "(5, 0) -> (4, 11)",
+]
+`;
+
+exports[`Arrays 1`] = `
+"var a = [
+  1,
+  2,
+  3
+];
+"
+`;
+
+exports[`Arrays 2`] = `
+Array [
+  "(1, 0) -> (1, 0)",
+  "(1, 4) -> (1, 4)",
+  "(1, 6) -> (1, 5)",
+  "(1, 8) -> (1, 6)",
+  "(2, 2) -> (1, 7)",
+  "(2, 3) -> (1, 8)",
+  "(3, 2) -> (1, 9)",
+  "(3, 3) -> (1, 10)",
+  "(4, 2) -> (1, 11)",
+  "(5, 0) -> (1, 12)",
+  "(5, 1) -> (1, 13)",
+]
+`;
+
+exports[`Arrays and spread operator 1`] = `
+"var a = [
+  1,
+  ...[
+    2,
+    3
+  ],
+  ...[],
+  4
+];
+"
+`;
+
+exports[`Arrays and spread operator 2`] = `
+Array [
+  "(1, 0) -> (1, 0)",
+  "(1, 4) -> (1, 4)",
+  "(1, 6) -> (1, 5)",
+  "(1, 8) -> (1, 6)",
+  "(2, 2) -> (1, 7)",
+  "(2, 3) -> (1, 8)",
+  "(3, 2) -> (1, 9)",
+  "(3, 5) -> (1, 12)",
+  "(4, 4) -> (1, 13)",
+  "(4, 5) -> (1, 14)",
+  "(5, 4) -> (1, 15)",
+  "(6, 2) -> (1, 16)",
+  "(6, 3) -> (1, 17)",
+  "(7, 2) -> (1, 18)",
+  "(7, 5) -> (1, 21)",
+  "(7, 6) -> (1, 22)",
+  "(7, 7) -> (1, 23)",
+  "(8, 2) -> (1, 25)",
+  "(9, 0) -> (1, 26)",
+  "(9, 1) -> (1, 27)",
+]
+`;
+
+exports[`Binary operators 1`] = `
+"var a = 5 * 30;
+var b = 5 >> 3;
+"
+`;
+
+exports[`Binary operators 2`] = `
+Array [
+  "(1, 0) -> (1, 0)",
+  "(1, 4) -> (1, 4)",
+  "(1, 6) -> (1, 5)",
+  "(1, 8) -> (1, 6)",
+  "(1, 10) -> (1, 7)",
+  "(1, 12) -> (1, 8)",
+  "(1, 14) -> (1, 10)",
+  "(2, 0) -> (1, 11)",
+  "(2, 4) -> (1, 15)",
+  "(2, 6) -> (1, 16)",
+  "(2, 8) -> (1, 17)",
+  "(2, 10) -> (1, 18)",
+  "(2, 13) -> (1, 20)",
+  "(2, 14) -> (1, 21)",
+]
+`;
+
+exports[`Bug 975477 don't move end of line comments to next line 1`] = `
+"switch (request.action) {
+  case 'show': //$NON-NLS-0$
+    if (localStorage.hideicon !== 'true') { //$NON-NLS-0$
+      chrome.pageAction.show(sender.tab.id);
+    }
+    break;
+  case 'hide': /*Multiline
+               Comment */
+    break;
+  default:
+    console.warn('unknown request'); //$NON-NLS-0$
+    // don't respond if you don't understand the message.
+    return;
+}
+"
+`;
+
+exports[`Bug 975477 don't move end of line comments to next line 2`] = `
+Array [
+  "(1, 0) -> (1, 0)",
+  "(1, 7) -> (1, 7)",
+  "(1, 8) -> (1, 8)",
+  "(1, 15) -> (1, 15)",
+  "(1, 16) -> (1, 16)",
+  "(1, 22) -> (1, 22)",
+  "(1, 24) -> (1, 24)",
+  "(2, 2) -> (2, 13)",
+  "(2, 7) -> (2, 18)",
+  "(2, 13) -> (2, 24)",
+  "(3, 4) -> (3, 15)",
+  "(3, 7) -> (3, 18)",
+  "(3, 8) -> (3, 19)",
+  "(3, 20) -> (3, 31)",
+  "(3, 21) -> (3, 32)",
+  "(3, 30) -> (3, 41)",
+  "(3, 34) -> (3, 45)",
+  "(3, 40) -> (3, 51)",
+  "(3, 42) -> (3, 53)",
+  "(4, 6) -> (4, 17)",
+  "(4, 12) -> (4, 23)",
+  "(4, 13) -> (4, 24)",
+  "(4, 23) -> (4, 34)",
+  "(4, 24) -> (4, 35)",
+  "(4, 28) -> (4, 39)",
+  "(4, 29) -> (4, 40)",
+  "(4, 35) -> (4, 46)",
+  "(4, 36) -> (4, 47)",
+  "(4, 39) -> (4, 50)",
+  "(4, 40) -> (4, 51)",
+  "(4, 42) -> (4, 53)",
+  "(4, 43) -> (4, 54)",
+  "(5, 4) -> (5, 15)",
+  "(6, 4) -> (6, 15)",
+  "(6, 9) -> (6, 20)",
+  "(7, 2) -> (7, 13)",
+  "(7, 7) -> (7, 18)",
+  "(7, 13) -> (7, 24)",
+  "(9, 4) -> (9, 15)",
+  "(9, 9) -> (9, 20)",
+  "(10, 2) -> (10, 13)",
+  "(10, 9) -> (10, 20)",
+  "(11, 4) -> (11, 15)",
+  "(11, 11) -> (11, 22)",
+  "(11, 12) -> (11, 23)",
+  "(11, 16) -> (11, 27)",
+  "(11, 17) -> (11, 28)",
+  "(11, 34) -> (11, 45)",
+  "(11, 35) -> (11, 46)",
+  "(13, 4) -> (13, 15)",
+  "(13, 10) -> (13, 21)",
+  "(14, 0) -> (14, 11)",
+]
+`;
+
+exports[`Bug 977082 - space between grouping operator and dot notation 1`] = `
+"JSON.stringify(3).length;
+([1,
+2,
+3]).length;
+(new Date()).toLocaleString();
+"
+`;
+
+exports[`Bug 977082 - space between grouping operator and dot notation 2`] = `
+Array [
+  "(1, 0) -> (1, 0)",
+  "(1, 4) -> (1, 4)",
+  "(1, 5) -> (1, 5)",
+  "(1, 14) -> (1, 14)",
+  "(1, 15) -> (1, 15)",
+  "(1, 16) -> (1, 16)",
+  "(1, 17) -> (1, 17)",
+  "(1, 18) -> (1, 18)",
+  "(1, 24) -> (1, 24)",
+  "(2, 0) -> (2, 11)",
+  "(2, 1) -> (2, 12)",
+  "(2, 2) -> (2, 13)",
+  "(2, 3) -> (2, 14)",
+  "(3, 0) -> (2, 15)",
+  "(3, 1) -> (2, 16)",
+  "(4, 0) -> (2, 17)",
+  "(4, 1) -> (2, 18)",
+  "(4, 2) -> (2, 19)",
+  "(4, 3) -> (2, 20)",
+  "(4, 4) -> (2, 21)",
+  "(4, 10) -> (2, 27)",
+  "(5, 0) -> (3, 11)",
+  "(5, 1) -> (3, 12)",
+  "(5, 5) -> (3, 16)",
+  "(5, 9) -> (3, 20)",
+  "(5, 10) -> (3, 21)",
+  "(5, 11) -> (3, 22)",
+  "(5, 12) -> (3, 23)",
+  "(5, 13) -> (3, 24)",
+  "(5, 27) -> (3, 38)",
+  "(5, 28) -> (3, 39)",
+  "(5, 29) -> (3, 40)",
+]
+`;
+
+exports[`Bug 1206633 - spaces in for of 1`] = `
+"for (let tab of tabs) {
+}
+"
+`;
+
+exports[`Bug 1206633 - spaces in for of 2`] = `
+Array [
+  "(1, 0) -> (1, 0)",
+  "(1, 4) -> (1, 4)",
+  "(1, 5) -> (1, 5)",
+  "(1, 9) -> (1, 9)",
+  "(1, 13) -> (1, 13)",
+  "(1, 16) -> (1, 16)",
+  "(1, 20) -> (1, 20)",
+  "(1, 22) -> (1, 22)",
+  "(2, 0) -> (1, 23)",
+]
+`;
+
+exports[`Bug 1261971 - indentation after switch statement 1`] = `
+"{
+  switch (x) {
+  }
+  if (y) {
+  }
+  done();
+}
+"
+`;
+
+exports[`Bug 1261971 - indentation after switch statement 2`] = `
+Array [
+  "(1, 0) -> (1, 0)",
+  "(2, 2) -> (1, 1)",
+  "(2, 9) -> (1, 7)",
+  "(2, 10) -> (1, 8)",
+  "(2, 11) -> (1, 9)",
+  "(2, 13) -> (1, 10)",
+  "(3, 2) -> (1, 11)",
+  "(4, 2) -> (1, 12)",
+  "(4, 5) -> (1, 14)",
+  "(4, 6) -> (1, 15)",
+  "(4, 7) -> (1, 16)",
+  "(4, 9) -> (1, 17)",
+  "(5, 2) -> (1, 18)",
+  "(6, 2) -> (1, 19)",
+  "(6, 6) -> (1, 23)",
+  "(6, 7) -> (1, 24)",
+  "(6, 8) -> (1, 25)",
+  "(7, 0) -> (1, 26)",
+]
+`;
+
+exports[`Bug pretty-sure-3 - escaping line and paragraph separators 1`] = `
+"x = '\\\\u2029\\\\u2028';
+"
+`;
+
+exports[`Bug pretty-sure-3 - escaping line and paragraph separators 2`] = `
+Array [
+  "(1, 0) -> (1, 0)",
+  "(1, 2) -> (1, 2)",
+  "(1, 4) -> (1, 4)",
+  "(1, 18) -> (1, 18)",
+]
+`;
+
+exports[`Bug pretty-sure-4 - escaping null character before digit 1`] = `
+"x = '\\\\x001';
+"
+`;
+
+exports[`Bug pretty-sure-4 - escaping null character before digit 2`] = `
+Array [
+  "(1, 0) -> (1, 0)",
+  "(1, 2) -> (1, 2)",
+  "(1, 4) -> (1, 4)",
+  "(1, 11) -> (1, 13)",
+]
+`;
+
+exports[`Bug pretty-sure-5 - empty multiline comment shouldn't throw exception 1`] = `
+"{
+  /*
+           */
+  return;
+}
+"
+`;
+
+exports[`Bug pretty-sure-5 - empty multiline comment shouldn't throw exception 2`] = `
+Array [
+  "(1, 0) -> (1, 0)",
+  "(4, 2) -> (4, 13)",
+  "(4, 8) -> (4, 19)",
+  "(5, 0) -> (5, 11)",
+]
+`;
+
+exports[`Bug pretty-sure-6 - inline comment shouldn't move parenthesis to next line 1`] = `
+"return /* inline comment */ (1 + 1);
+"
+`;
+
+exports[`Bug pretty-sure-6 - inline comment shouldn't move parenthesis to next line 2`] = `
+Array [
+  "(1, 0) -> (1, 0)",
+  "(1, 28) -> (1, 28)",
+  "(1, 29) -> (2, 13)",
+  "(1, 31) -> (2, 14)",
+  "(1, 33) -> (2, 15)",
+  "(1, 34) -> (2, 16)",
+  "(1, 35) -> (2, 17)",
+]
+`;
+
+exports[`Bug pretty-sure-7 - accessing a literal number property requires a space 1`] = `
+"0 .toString() + x.toString();
+"
+`;
+
+exports[`Bug pretty-sure-7 - accessing a literal number property requires a space 2`] = `
+Array [
+  "(1, 0) -> (1, 0)",
+  "(1, 2) -> (1, 2)",
+  "(1, 3) -> (1, 3)",
+  "(1, 11) -> (1, 11)",
+  "(1, 12) -> (1, 12)",
+  "(1, 14) -> (1, 13)",
+  "(1, 16) -> (1, 14)",
+  "(1, 17) -> (1, 15)",
+  "(1, 18) -> (1, 16)",
+  "(1, 26) -> (1, 24)",
+  "(1, 27) -> (1, 25)",
+  "(1, 28) -> (1, 26)",
+]
+`;
+
+exports[`Bug pretty-sure-8 - return and yield only accept arguments when on the same line 1`] = `
+"{
+  return
+  (x)
+  yield
+  (x)
+  yield
+  * x
+}
+"
+`;
+
+exports[`Bug pretty-sure-8 - return and yield only accept arguments when on the same line 2`] = `
+Array [
+  "(1, 0) -> (1, 0)",
+  "(2, 2) -> (2, 13)",
+  "(3, 2) -> (3, 13)",
+  "(3, 3) -> (3, 14)",
+  "(3, 4) -> (3, 15)",
+  "(4, 2) -> (4, 13)",
+  "(5, 2) -> (5, 13)",
+  "(5, 3) -> (5, 14)",
+  "(5, 4) -> (5, 15)",
+  "(6, 2) -> (6, 13)",
+  "(7, 2) -> (7, 13)",
+  "(7, 4) -> (7, 14)",
+  "(8, 0) -> (8, 11)",
+]
+`;
+
+exports[`Bug pretty-sure-9 - accept unary operator at start of file 1`] = `
+"+ 0
+"
+`;
+
+exports[`Bug pretty-sure-9 - accept unary operator at start of file 2`] = `
+Array [
+  "(1, 0) -> (1, 0)",
+  "(1, 2) -> (1, 2)",
+]
+`;
+
+exports[`Class extension within a function 1`] = `
+"(function () {
+  class X extends Y {
+    constructor() {
+    }
+  }
+}) ()
+"
+`;
+
+exports[`Class extension within a function 2`] = `
+Array [
+  "(1, 0) -> (1, 0)",
+  "(1, 1) -> (1, 1)",
+  "(1, 10) -> (1, 9)",
+  "(1, 11) -> (1, 10)",
+  "(1, 13) -> (1, 12)",
+  "(2, 2) -> (1, 15)",
+  "(2, 8) -> (1, 21)",
+  "(2, 10) -> (1, 23)",
+  "(2, 18) -> (1, 31)",
+  "(2, 20) -> (1, 33)",
+  "(3, 4) -> (1, 35)",
+  "(3, 15) -> (1, 46)",
+  "(3, 16) -> (1, 47)",
+  "(3, 18) -> (1, 49)",
+  "(4, 4) -> (1, 50)",
+  "(5, 2) -> (1, 52)",
+  "(6, 0) -> (1, 55)",
+  "(6, 1) -> (1, 56)",
+  "(6, 3) -> (1, 57)",
+  "(6, 4) -> (1, 58)",
+]
+`;
+
+exports[`Class handling 1`] = `
+"class Class {
+  constructor() {
+  }
+}
+"
+`;
+
+exports[`Class handling 2`] = `
+Array [
+  "(1, 0) -> (1, 0)",
+  "(1, 6) -> (1, 7)",
+  "(1, 12) -> (1, 12)",
+  "(2, 2) -> (1, 13)",
+  "(2, 13) -> (1, 24)",
+  "(2, 14) -> (1, 25)",
+  "(2, 16) -> (1, 26)",
+  "(3, 2) -> (1, 27)",
+  "(4, 0) -> (1, 28)",
+]
+`;
+
+exports[`Code that relies on ASI 1`] = `
+"var foo = 10
+var bar = 20
+function g() {
+  a()
+  b()
+}
+"
+`;
+
+exports[`Code that relies on ASI 2`] = `
+Array [
+  "(1, 0) -> (2, 11)",
+  "(1, 4) -> (2, 15)",
+  "(1, 8) -> (2, 19)",
+  "(1, 10) -> (2, 21)",
+  "(2, 0) -> (3, 11)",
+  "(2, 4) -> (3, 15)",
+  "(2, 8) -> (3, 19)",
+  "(2, 10) -> (3, 21)",
+  "(3, 0) -> (4, 11)",
+  "(3, 9) -> (4, 20)",
+  "(3, 10) -> (4, 21)",
+  "(3, 11) -> (4, 22)",
+  "(3, 13) -> (4, 24)",
+  "(4, 2) -> (5, 13)",
+  "(4, 3) -> (5, 14)",
+  "(4, 4) -> (5, 15)",
+  "(5, 2) -> (6, 13)",
+  "(5, 3) -> (6, 14)",
+  "(5, 4) -> (6, 15)",
+  "(6, 0) -> (7, 11)",
+]
+`;
+
+exports[`Const handling 1`] = `
+"const d = 'yes';
+"
+`;
+
+exports[`Const handling 2`] = `
+Array [
+  "(1, 0) -> (1, 0)",
+  "(1, 6) -> (1, 6)",
+  "(1, 8) -> (1, 8)",
+  "(1, 10) -> (1, 10)",
+  "(1, 15) -> (1, 15)",
+]
+`;
+
+exports[`Continue/break statements 1`] = `
+"while (1) {
+  if (x) {
+    continue
+  }
+  if (y) {
+    break
+  }
+  if (z) {
+    break foo
+  }
+}
+"
+`;
+
+exports[`Continue/break statements 2`] = `
+Array [
+  "(1, 0) -> (1, 0)",
+  "(1, 6) -> (1, 5)",
+  "(1, 7) -> (1, 6)",
+  "(1, 8) -> (1, 7)",
+  "(1, 10) -> (1, 8)",
+  "(2, 2) -> (1, 9)",
+  "(2, 5) -> (1, 11)",
+  "(2, 6) -> (1, 12)",
+  "(2, 7) -> (1, 13)",
+  "(2, 9) -> (1, 14)",
+  "(3, 4) -> (1, 15)",
+  "(4, 2) -> (1, 23)",
+  "(5, 2) -> (1, 24)",
+  "(5, 5) -> (1, 26)",
+  "(5, 6) -> (1, 27)",
+  "(5, 7) -> (1, 28)",
+  "(5, 9) -> (1, 29)",
+  "(6, 4) -> (1, 30)",
+  "(7, 2) -> (1, 35)",
+  "(8, 2) -> (1, 36)",
+  "(8, 5) -> (1, 38)",
+  "(8, 6) -> (1, 39)",
+  "(8, 7) -> (1, 40)",
+  "(8, 9) -> (1, 41)",
+  "(9, 4) -> (1, 42)",
+  "(9, 10) -> (1, 48)",
+  "(10, 2) -> (1, 51)",
+  "(11, 0) -> (1, 52)",
+]
+`;
+
+exports[`Delete 1`] = `
+"delete obj.prop;
+"
+`;
+
+exports[`Delete 2`] = `
+Array [
+  "(1, 0) -> (1, 0)",
+  "(1, 7) -> (1, 7)",
+  "(1, 10) -> (1, 10)",
+  "(1, 11) -> (1, 11)",
+  "(1, 15) -> (1, 15)",
+]
+`;
+
+exports[`Do/while loop 1`] = `
+"do {
+  x
+} while (y)
+"
+`;
+
+exports[`Do/while loop 2`] = `
+Array [
+  "(1, 0) -> (1, 0)",
+  "(1, 3) -> (1, 2)",
+  "(2, 2) -> (1, 3)",
+  "(3, 0) -> (1, 4)",
+  "(3, 2) -> (1, 5)",
+  "(3, 8) -> (1, 10)",
+  "(3, 9) -> (1, 11)",
+  "(3, 10) -> (1, 12)",
+]
+`;
+
+exports[`Dot handling with keywords which are identifier name 1`] = `
+"y.await.break.const.delete.else.return.new.yield = 1.23;
+"
+`;
+
+exports[`Dot handling with keywords which are identifier name 2`] = `
+Array [
+  "(1, 0) -> (1, 0)",
+  "(1, 1) -> (1, 1)",
+  "(1, 2) -> (1, 2)",
+  "(1, 7) -> (1, 7)",
+  "(1, 8) -> (1, 8)",
+  "(1, 13) -> (1, 13)",
+  "(1, 14) -> (1, 14)",
+  "(1, 19) -> (1, 19)",
+  "(1, 20) -> (1, 20)",
+  "(1, 26) -> (1, 26)",
+  "(1, 27) -> (1, 27)",
+  "(1, 31) -> (1, 31)",
+  "(1, 32) -> (1, 32)",
+  "(1, 38) -> (1, 38)",
+  "(1, 39) -> (1, 39)",
+  "(1, 42) -> (1, 42)",
+  "(1, 43) -> (1, 43)",
+  "(1, 49) -> (1, 49)",
+  "(1, 51) -> (1, 51)",
+  "(1, 55) -> (1, 55)",
+]
+`;
+
+exports[`Dot handling with let which is identifier name 1`] = `
+"y.let.let = 1.23;
+"
+`;
+
+exports[`Dot handling with let which is identifier name 2`] = `
+Array [
+  "(1, 0) -> (1, 0)",
+  "(1, 1) -> (1, 1)",
+  "(1, 2) -> (1, 2)",
+  "(1, 5) -> (1, 5)",
+  "(1, 6) -> (1, 6)",
+  "(1, 10) -> (1, 10)",
+  "(1, 12) -> (1, 12)",
+  "(1, 16) -> (1, 16)",
+]
+`;
+
+exports[`Empty object/array literals 1`] = `
+"let a = [];
+const b = {};
+c = {
+  ...{},
+  d: 42
+};
+for (let x of []) {
+  for (let y in {}) {
+  }
+}
+"
+`;
+
+exports[`Empty object/array literals 2`] = `
+Array [
+  "(1, 0) -> (1, 0)",
+  "(1, 4) -> (1, 4)",
+  "(1, 6) -> (1, 5)",
+  "(1, 8) -> (1, 6)",
+  "(1, 9) -> (1, 7)",
+  "(1, 10) -> (1, 8)",
+  "(2, 0) -> (1, 9)",
+  "(2, 6) -> (1, 15)",
+  "(2, 8) -> (1, 16)",
+  "(2, 10) -> (1, 17)",
+  "(2, 11) -> (1, 18)",
+  "(2, 12) -> (1, 19)",
+  "(3, 0) -> (1, 20)",
+  "(3, 2) -> (1, 21)",
+  "(3, 4) -> (1, 22)",
+  "(4, 2) -> (1, 23)",
+  "(4, 5) -> (1, 26)",
+  "(4, 6) -> (1, 27)",
+  "(4, 7) -> (1, 28)",
+  "(5, 2) -> (1, 29)",
+  "(5, 3) -> (1, 30)",
+  "(5, 5) -> (1, 32)",
+  "(6, 0) -> (1, 34)",
+  "(6, 1) -> (1, 35)",
+  "(7, 0) -> (1, 36)",
+  "(7, 4) -> (1, 39)",
+  "(7, 5) -> (1, 40)",
+  "(7, 9) -> (1, 44)",
+  "(7, 11) -> (1, 46)",
+  "(7, 14) -> (1, 49)",
+  "(7, 15) -> (1, 50)",
+  "(7, 16) -> (1, 51)",
+  "(7, 18) -> (1, 52)",
+  "(8, 2) -> (1, 53)",
+  "(8, 6) -> (1, 56)",
+  "(8, 7) -> (1, 57)",
+  "(8, 11) -> (1, 61)",
+  "(8, 13) -> (1, 63)",
+  "(8, 16) -> (1, 66)",
+  "(8, 17) -> (1, 67)",
+  "(8, 18) -> (1, 68)",
+  "(8, 20) -> (1, 69)",
+  "(9, 2) -> (1, 70)",
+  "(10, 0) -> (1, 71)",
+]
+`;
+
+exports[`Escaping backslashes in strings 1`] = `
+"'\\\\\\\\'
+"
+`;
+
+exports[`Escaping backslashes in strings 2`] = `
+Array [
+  "(1, 0) -> (1, 0)",
+]
+`;
+
+exports[`Escaping carriage return in strings 1`] = `
+"'\\\\r'
+"
+`;
+
+exports[`Escaping carriage return in strings 2`] = `
+Array [
+  "(1, 0) -> (1, 0)",
+]
+`;
+
+exports[`Escaping form feed in strings 1`] = `
+"'\\\\f'
+"
+`;
+
+exports[`Escaping form feed in strings 2`] = `
+Array [
+  "(1, 0) -> (1, 0)",
+]
+`;
+
+exports[`Escaping null character in strings 1`] = `
+"'\\\\x00'
+"
+`;
+
+exports[`Escaping null character in strings 2`] = `
+Array [
+  "(1, 0) -> (1, 0)",
+]
+`;
+
+exports[`Escaping tab in strings 1`] = `
+"'\\\\t'
+"
+`;
+
+exports[`Escaping tab in strings 2`] = `
+Array [
+  "(1, 0) -> (1, 0)",
+]
+`;
+
+exports[`Escaping vertical tab in strings 1`] = `
+"'\\\\v'
+"
+`;
+
+exports[`Escaping vertical tab in strings 2`] = `
+Array [
+  "(1, 0) -> (1, 0)",
+]
+`;
+
+exports[`False assignment 1`] = `
+"var foo = false;
+"
+`;
+
+exports[`False assignment 2`] = `
+Array [
+  "(1, 0) -> (1, 0)",
+  "(1, 4) -> (1, 4)",
+  "(1, 8) -> (1, 7)",
+  "(1, 10) -> (1, 8)",
+  "(1, 15) -> (1, 13)",
+]
+`;
+
+exports[`Fat arrow function 1`] = `
+"const a = () => 42
+addEventListener('click', e => {
+  return false
+});
+const sum = (c, d) => c + d
+"
+`;
+
+exports[`Fat arrow function 2`] = `
+Array [
+  "(1, 0) -> (2, 6)",
+  "(1, 6) -> (2, 12)",
+  "(1, 8) -> (2, 14)",
+  "(1, 10) -> (2, 16)",
+  "(1, 11) -> (2, 17)",
+  "(1, 13) -> (2, 19)",
+  "(1, 16) -> (2, 22)",
+  "(2, 0) -> (3, 6)",
+  "(2, 16) -> (3, 22)",
+  "(2, 17) -> (3, 23)",
+  "(2, 24) -> (3, 30)",
+  "(2, 26) -> (3, 32)",
+  "(2, 28) -> (3, 34)",
+  "(2, 31) -> (3, 37)",
+  "(3, 2) -> (3, 39)",
+  "(3, 9) -> (3, 46)",
+  "(4, 0) -> (3, 52)",
+  "(4, 1) -> (3, 53)",
+  "(4, 2) -> (3, 54)",
+  "(5, 0) -> (4, 6)",
+  "(5, 6) -> (4, 12)",
+  "(5, 10) -> (4, 16)",
+  "(5, 12) -> (4, 18)",
+  "(5, 13) -> (4, 19)",
+  "(5, 14) -> (4, 20)",
+  "(5, 16) -> (4, 21)",
+  "(5, 17) -> (4, 22)",
+  "(5, 19) -> (4, 24)",
+  "(5, 22) -> (4, 27)",
+  "(5, 24) -> (4, 28)",
+  "(5, 26) -> (4, 29)",
+]
+`;
+
+exports[`For loop 1`] = `
+"for (var i = 0; i < n; i++) {
+  console.log(i);
+}
+"
+`;
+
+exports[`For loop 2`] = `
+Array [
+  "(1, 0) -> (1, 0)",
+  "(1, 4) -> (1, 4)",
+  "(1, 5) -> (1, 5)",
+  "(1, 9) -> (1, 9)",
+  "(1, 11) -> (1, 11)",
+  "(1, 13) -> (1, 13)",
+  "(1, 14) -> (1, 14)",
+  "(1, 16) -> (1, 16)",
+  "(1, 18) -> (1, 18)",
+  "(1, 20) -> (1, 20)",
+  "(1, 21) -> (1, 21)",
+  "(1, 23) -> (1, 23)",
+  "(1, 24) -> (1, 24)",
+  "(1, 26) -> (1, 26)",
+  "(1, 28) -> (1, 28)",
+  "(2, 2) -> (1, 30)",
+  "(2, 9) -> (1, 37)",
+  "(2, 10) -> (1, 38)",
+  "(2, 13) -> (1, 41)",
+  "(2, 14) -> (1, 42)",
+  "(2, 15) -> (1, 43)",
+  "(2, 16) -> (1, 44)",
+  "(3, 0) -> (1, 46)",
+]
+`;
+
+exports[`Function calls 1`] = `
+"var result = func(a, b, c, d);
+"
+`;
+
+exports[`Function calls 2`] = `
+Array [
+  "(1, 0) -> (1, 0)",
+  "(1, 4) -> (1, 4)",
+  "(1, 11) -> (1, 10)",
+  "(1, 13) -> (1, 11)",
+  "(1, 17) -> (1, 15)",
+  "(1, 18) -> (1, 16)",
+  "(1, 19) -> (1, 17)",
+  "(1, 21) -> (1, 18)",
+  "(1, 22) -> (1, 19)",
+  "(1, 24) -> (1, 20)",
+  "(1, 25) -> (1, 21)",
+  "(1, 27) -> (1, 22)",
+  "(1, 28) -> (1, 23)",
+  "(1, 29) -> (1, 24)",
+]
+`;
+
+exports[`Getter and setter literals 1`] = `
+"var obj = {
+  get foo() {
+    return this._foo
+  },
+  set foo(v) {
+    this._foo = v
+  }
+}
+"
+`;
+
+exports[`Getter and setter literals 2`] = `
+Array [
+  "(1, 0) -> (1, 0)",
+  "(1, 4) -> (1, 4)",
+  "(1, 8) -> (1, 7)",
+  "(1, 10) -> (1, 8)",
+  "(2, 2) -> (1, 9)",
+  "(2, 6) -> (1, 13)",
+  "(2, 9) -> (1, 16)",
+  "(2, 10) -> (1, 17)",
+  "(2, 12) -> (1, 18)",
+  "(3, 4) -> (1, 19)",
+  "(3, 11) -> (1, 26)",
+  "(3, 15) -> (1, 30)",
+  "(3, 16) -> (1, 31)",
+  "(4, 2) -> (1, 35)",
+  "(4, 3) -> (1, 36)",
+  "(5, 2) -> (1, 37)",
+  "(5, 6) -> (1, 41)",
+  "(5, 9) -> (1, 44)",
+  "(5, 10) -> (1, 45)",
+  "(5, 11) -> (1, 46)",
+  "(5, 13) -> (1, 47)",
+  "(6, 4) -> (1, 48)",
+  "(6, 8) -> (1, 52)",
+  "(6, 9) -> (1, 53)",
+  "(6, 14) -> (1, 57)",
+  "(6, 16) -> (1, 58)",
+  "(7, 2) -> (1, 59)",
+  "(8, 0) -> (1, 60)",
+]
+`;
+
+exports[`If/else statement 1`] = `
+"if (c) {
+  then()
+} else {
+  other()
+}
+"
+`;
+
+exports[`If/else statement 2`] = `
+Array [
+  "(1, 0) -> (1, 0)",
+  "(1, 3) -> (1, 2)",
+  "(1, 4) -> (1, 3)",
+  "(1, 5) -> (1, 4)",
+  "(1, 7) -> (1, 5)",
+  "(2, 2) -> (1, 6)",
+  "(2, 6) -> (1, 10)",
+  "(2, 7) -> (1, 11)",
+  "(3, 0) -> (1, 12)",
+  "(3, 2) -> (1, 13)",
+  "(3, 7) -> (1, 17)",
+  "(4, 2) -> (1, 18)",
+  "(4, 7) -> (1, 23)",
+  "(4, 8) -> (1, 24)",
+  "(5, 0) -> (1, 25)",
+]
+`;
+
+exports[`If/else without curlies 1`] = `
+"if (c) a else b
+"
+`;
+
+exports[`If/else without curlies 2`] = `
+Array [
+  "(1, 0) -> (1, 0)",
+  "(1, 3) -> (1, 2)",
+  "(1, 4) -> (1, 3)",
+  "(1, 5) -> (1, 4)",
+  "(1, 7) -> (1, 6)",
+  "(1, 9) -> (1, 8)",
+  "(1, 14) -> (1, 13)",
+]
+`;
+
+exports[`Immediately invoked function expression 1`] = `
+"(function () {
+  thingy()
+}())
+"
+`;
+
+exports[`Immediately invoked function expression 2`] = `
+Array [
+  "(1, 0) -> (1, 0)",
+  "(1, 1) -> (1, 1)",
+  "(1, 10) -> (1, 9)",
+  "(1, 11) -> (1, 10)",
+  "(1, 13) -> (1, 11)",
+  "(2, 2) -> (1, 12)",
+  "(2, 8) -> (1, 18)",
+  "(2, 9) -> (1, 19)",
+  "(3, 0) -> (1, 20)",
+  "(3, 1) -> (1, 21)",
+  "(3, 2) -> (1, 22)",
+  "(3, 3) -> (1, 23)",
+]
+`;
+
+exports[`In operator 1`] = `
+"if (foo in bar) {
+  doThing()
+}
+"
+`;
+
+exports[`In operator 2`] = `
+Array [
+  "(1, 0) -> (1, 0)",
+  "(1, 3) -> (1, 2)",
+  "(1, 4) -> (1, 3)",
+  "(1, 8) -> (1, 7)",
+  "(1, 11) -> (1, 10)",
+  "(1, 14) -> (1, 13)",
+  "(1, 16) -> (1, 14)",
+  "(2, 2) -> (1, 15)",
+  "(2, 9) -> (1, 22)",
+  "(2, 10) -> (1, 23)",
+  "(3, 0) -> (1, 24)",
+]
+`;
+
+exports[`Indented multiline comment 1`] = `
+"function foo() {
+  /**
+              * java doc style comment
+              * more comment
+              */
+  bar();
+}
+"
+`;
+
+exports[`Indented multiline comment 2`] = `
+Array [
+  "(1, 0) -> (1, 0)",
+  "(1, 9) -> (1, 9)",
+  "(1, 12) -> (1, 12)",
+  "(1, 13) -> (1, 13)",
+  "(1, 15) -> (1, 15)",
+  "(6, 2) -> (6, 13)",
+  "(6, 5) -> (6, 16)",
+  "(6, 6) -> (6, 17)",
+  "(6, 7) -> (6, 18)",
+  "(7, 0) -> (7, 11)",
+]
+`;
+
+exports[`Instanceof 1`] = `
+"var a = x instanceof y;
+"
+`;
+
+exports[`Instanceof 2`] = `
+Array [
+  "(1, 0) -> (1, 0)",
+  "(1, 4) -> (1, 4)",
+  "(1, 6) -> (1, 5)",
+  "(1, 8) -> (1, 6)",
+  "(1, 10) -> (1, 8)",
+  "(1, 21) -> (1, 19)",
+  "(1, 22) -> (1, 20)",
+]
+`;
+
+exports[`Let handling with value 1`] = `
+"let d = 'yes';
+"
+`;
+
+exports[`Let handling with value 2`] = `
+Array [
+  "(1, 0) -> (1, 0)",
+  "(1, 4) -> (1, 4)",
+  "(1, 6) -> (1, 6)",
+  "(1, 8) -> (1, 8)",
+  "(1, 13) -> (1, 13)",
+]
+`;
+
+exports[`Let handling without value 1`] = `
+"let d;
+"
+`;
+
+exports[`Let handling without value 2`] = `
+Array [
+  "(1, 0) -> (1, 0)",
+  "(1, 4) -> (1, 4)",
+  "(1, 5) -> (1, 5)",
+]
+`;
+
+exports[`Long parenthesis 1`] = `
+"if (
+  thisIsAVeryLongVariable &&
+  thisIsAnotherOne ||
+  yetAnotherVeryLongVariable
+) {
+  (
+    thisIsAnotherOne = thisMayReturnNull() ||
+    'hi',
+    thisIsAVeryLongVariable = 42,
+    yetAnotherVeryLongVariable &&
+    doSomething(
+      true /* do it well */ ,
+      thisIsAVeryLongVariable,
+      thisIsAnotherOne,
+      yetAnotherVeryLongVariable
+    )
+  )
+}
+for (
+  let thisIsAnotherVeryLongVariable = 0;
+  i < thisIsAnotherVeryLongVariable.length;
+  thisIsAnotherVeryLongVariable++
+) {
+}
+const x = ({
+  thisIsAnotherVeryLongPropertyName: 'but should not cause the paren to be a line delimiter'
+})
+"
+`;
+
+exports[`Long parenthesis 2`] = `
+Array [
+  "(1, 0) -> (2, 6)",
+  "(1, 3) -> (2, 9)",
+  "(2, 2) -> (2, 10)",
+  "(2, 26) -> (2, 34)",
+  "(3, 2) -> (2, 37)",
+  "(3, 19) -> (2, 54)",
+  "(4, 2) -> (2, 57)",
+  "(5, 0) -> (2, 83)",
+  "(5, 2) -> (2, 85)",
+  "(6, 2) -> (3, 8)",
+  "(7, 4) -> (3, 9)",
+  "(7, 21) -> (3, 26)",
+  "(7, 23) -> (3, 28)",
+  "(7, 40) -> (3, 45)",
+  "(7, 41) -> (3, 46)",
+  "(7, 43) -> (3, 48)",
+  "(8, 4) -> (3, 51)",
+  "(8, 8) -> (3, 55)",
+  "(9, 4) -> (3, 57)",
+  "(9, 28) -> (3, 81)",
+  "(9, 30) -> (3, 83)",
+  "(9, 32) -> (3, 85)",
+  "(10, 4) -> (3, 87)",
+  "(10, 31) -> (3, 114)",
+  "(11, 4) -> (3, 117)",
+  "(11, 15) -> (3, 128)",
+  "(12, 6) -> (3, 129)",
+  "(12, 28) -> (3, 150)",
+  "(13, 6) -> (3, 151)",
+  "(13, 29) -> (3, 174)",
+  "(14, 6) -> (3, 176)",
+  "(14, 22) -> (3, 192)",
+  "(15, 6) -> (3, 194)",
+  "(16, 4) -> (3, 220)",
+  "(17, 2) -> (3, 221)",
+  "(18, 0) -> (4, 6)",
+  "(19, 0) -> (5, 6)",
+  "(19, 4) -> (5, 10)",
+  "(20, 2) -> (5, 11)",
+  "(20, 6) -> (5, 15)",
+  "(20, 36) -> (5, 45)",
+  "(20, 38) -> (5, 47)",
+  "(20, 39) -> (5, 48)",
+  "(21, 2) -> (5, 50)",
+  "(21, 4) -> (5, 52)",
+  "(21, 6) -> (5, 54)",
+  "(21, 35) -> (5, 83)",
+  "(21, 36) -> (5, 84)",
+  "(21, 42) -> (5, 90)",
+  "(22, 2) -> (5, 92)",
+  "(22, 31) -> (5, 121)",
+  "(23, 0) -> (5, 123)",
+  "(23, 2) -> (5, 125)",
+  "(24, 0) -> (5, 126)",
+  "(25, 0) -> (6, 6)",
+  "(25, 6) -> (6, 12)",
+  "(25, 8) -> (6, 14)",
+  "(25, 10) -> (6, 16)",
+  "(25, 11) -> (6, 17)",
+  "(26, 2) -> (6, 18)",
+  "(26, 35) -> (6, 51)",
+  "(26, 37) -> (6, 53)",
+  "(27, 0) -> (6, 108)",
+  "(27, 1) -> (6, 109)",
+]
+`;
+
+exports[`Multi line comment 1`] = `
+"/* Comment
+    more comment */
+function foo() {
+  bar();
+}
+"
+`;
+
+exports[`Multi line comment 2`] = `
+Array [
+  "(3, 0) -> (4, 4)",
+  "(3, 9) -> (4, 13)",
+  "(3, 12) -> (4, 16)",
+  "(3, 13) -> (4, 17)",
+  "(3, 15) -> (4, 19)",
+  "(4, 2) -> (4, 21)",
+  "(4, 5) -> (4, 24)",
+  "(4, 6) -> (4, 25)",
+  "(4, 7) -> (4, 26)",
+  "(5, 0) -> (4, 28)",
+]
+`;
+
+exports[`Multiple single line comments 1`] = `
+"function f() {
+  // a
+  // b
+  // c
+}
+"
+`;
+
+exports[`Multiple single line comments 2`] = `
+Array [
+  "(1, 0) -> (1, 0)",
+  "(1, 9) -> (1, 9)",
+  "(1, 10) -> (1, 10)",
+  "(1, 11) -> (1, 11)",
+  "(1, 13) -> (1, 13)",
+  "(5, 0) -> (5, 11)",
+]
+`;
+
+exports[`Named class handling 1`] = `
+"let unnamed = class Class {
+  constructor() {
+  }
+}
+"
+`;
+
+exports[`Named class handling 2`] = `
+Array [
+  "(1, 0) -> (1, 0)",
+  "(1, 4) -> (1, 4)",
+  "(1, 12) -> (1, 11)",
+  "(1, 14) -> (1, 12)",
+  "(1, 20) -> (1, 18)",
+  "(1, 26) -> (1, 23)",
+  "(2, 2) -> (1, 24)",
+  "(2, 13) -> (1, 35)",
+  "(2, 14) -> (1, 36)",
+  "(2, 16) -> (1, 37)",
+  "(3, 2) -> (1, 38)",
+  "(4, 0) -> (1, 39)",
+]
+`;
+
+exports[`Nested function 1`] = `
+"function foo() {
+  function bar() {
+    debugger;
+  }
+  bar();
+}
+"
+`;
+
+exports[`Nested function 2`] = `
+Array [
+  "(1, 0) -> (1, 0)",
+  "(1, 9) -> (1, 9)",
+  "(1, 12) -> (1, 12)",
+  "(1, 13) -> (1, 13)",
+  "(1, 15) -> (1, 15)",
+  "(2, 2) -> (1, 17)",
+  "(2, 11) -> (1, 26)",
+  "(2, 14) -> (1, 29)",
+  "(2, 15) -> (1, 30)",
+  "(2, 17) -> (1, 32)",
+  "(3, 4) -> (1, 34)",
+  "(3, 12) -> (1, 42)",
+  "(4, 2) -> (1, 44)",
+  "(5, 2) -> (1, 46)",
+  "(5, 5) -> (1, 49)",
+  "(5, 6) -> (1, 50)",
+  "(5, 7) -> (1, 51)",
+  "(6, 0) -> (1, 53)",
+]
+`;
+
+exports[`New expression 1`] = `
+"var foo = new Foo();
+"
+`;
+
+exports[`New expression 2`] = `
+Array [
+  "(1, 0) -> (1, 0)",
+  "(1, 4) -> (1, 4)",
+  "(1, 8) -> (1, 7)",
+  "(1, 10) -> (1, 8)",
+  "(1, 14) -> (1, 12)",
+  "(1, 17) -> (1, 15)",
+  "(1, 18) -> (1, 16)",
+  "(1, 19) -> (1, 17)",
+]
+`;
+
+exports[`Non-ASI function call 1`] = `
+"f()
+"
+`;
+
+exports[`Non-ASI function call 2`] = `
+Array [
+  "(1, 0) -> (1, 0)",
+  "(1, 1) -> (2, 11)",
+  "(1, 2) -> (2, 12)",
+]
+`;
+
+exports[`Non-ASI in 1`] = `
+"'x' in foo
+"
+`;
+
+exports[`Non-ASI in 2`] = `
+Array [
+  "(1, 0) -> (1, 0)",
+  "(1, 4) -> (2, 11)",
+  "(1, 7) -> (2, 14)",
+]
+`;
+
+exports[`Non-ASI new 1`] = `
+"new F()
+"
+`;
+
+exports[`Non-ASI new 2`] = `
+Array [
+  "(1, 0) -> (1, 0)",
+  "(1, 4) -> (2, 11)",
+  "(1, 5) -> (2, 12)",
+  "(1, 6) -> (2, 13)",
+]
+`;
+
+exports[`Non-ASI property access 1`] = `
+"[
+  1,
+  2,
+  3
+]
+[0]
+"
+`;
+
+exports[`Non-ASI property access 2`] = `
+Array [
+  "(1, 0) -> (1, 0)",
+  "(2, 2) -> (1, 1)",
+  "(2, 3) -> (1, 2)",
+  "(3, 2) -> (1, 3)",
+  "(3, 3) -> (1, 4)",
+  "(4, 2) -> (1, 5)",
+  "(5, 0) -> (1, 6)",
+  "(6, 0) -> (2, 11)",
+  "(6, 1) -> (2, 12)",
+  "(6, 2) -> (2, 13)",
+]
+`;
+
+exports[`Null assignment 1`] = `
+"var i = null;
+"
+`;
+
+exports[`Null assignment 2`] = `
+Array [
+  "(1, 0) -> (1, 0)",
+  "(1, 4) -> (1, 4)",
+  "(1, 6) -> (1, 5)",
+  "(1, 8) -> (1, 6)",
+  "(1, 12) -> (1, 10)",
+]
+`;
+
+exports[`Objects 1`] = `
+"var o = {
+  a: 1,
+  b: 2
+};
+"
+`;
+
+exports[`Objects 2`] = `
+Array [
+  "(1, 0) -> (2, 6)",
+  "(1, 4) -> (2, 10)",
+  "(1, 6) -> (2, 11)",
+  "(1, 8) -> (2, 12)",
+  "(2, 2) -> (2, 13)",
+  "(2, 3) -> (2, 14)",
+  "(2, 5) -> (2, 15)",
+  "(2, 6) -> (2, 16)",
+  "(3, 2) -> (3, 6)",
+  "(3, 3) -> (3, 7)",
+  "(3, 5) -> (3, 8)",
+  "(4, 0) -> (3, 9)",
+  "(4, 1) -> (3, 10)",
+]
+`;
+
+exports[`Optional chaining parsing support 1`] = `
+"x?.y?.z?.['a']?.check();
+"
+`;
+
+exports[`Optional chaining parsing support 2`] = `
+Array [
+  "(1, 0) -> (1, 0)",
+  "(1, 1) -> (1, 1)",
+  "(1, 3) -> (1, 3)",
+  "(1, 4) -> (1, 4)",
+  "(1, 6) -> (1, 6)",
+  "(1, 7) -> (1, 7)",
+  "(1, 9) -> (1, 9)",
+  "(1, 10) -> (1, 10)",
+  "(1, 13) -> (1, 13)",
+  "(1, 14) -> (1, 14)",
+  "(1, 16) -> (1, 16)",
+  "(1, 21) -> (1, 21)",
+  "(1, 22) -> (1, 22)",
+  "(1, 23) -> (1, 23)",
+]
+`;
+
+exports[`Private fields parsing support 1`] = `
+"class MyClass {
+  constructor(a) {
+    this.#a = a;
+    this.#b = Math.random();
+    this.ab = this.#getAB();
+  }
+  #a
+  #b = 'default value'
+  static #someStaticPrivate
+  #getA() {
+    return this.#a;
+  }
+  #getAB() {
+    return this.#getA() + this.#b
+  }
+}
+"
+`;
+
+exports[`Private fields parsing support 2`] = `
+Array [
+  "(1, 0) -> (2, 6)",
+  "(1, 6) -> (2, 12)",
+  "(1, 14) -> (2, 20)",
+  "(2, 2) -> (3, 8)",
+  "(2, 13) -> (3, 19)",
+  "(2, 14) -> (3, 20)",
+  "(2, 15) -> (3, 21)",
+  "(2, 17) -> (3, 23)",
+  "(3, 4) -> (4, 10)",
+  "(3, 8) -> (4, 14)",
+  "(3, 9) -> (4, 15)",
+  "(3, 12) -> (4, 18)",
+  "(3, 14) -> (4, 20)",
+  "(3, 15) -> (4, 21)",
+  "(4, 4) -> (4, 22)",
+  "(4, 8) -> (4, 26)",
+  "(4, 9) -> (4, 27)",
+  "(4, 12) -> (4, 30)",
+  "(4, 14) -> (4, 32)",
+  "(4, 18) -> (4, 36)",
+  "(4, 19) -> (4, 37)",
+  "(4, 25) -> (4, 43)",
+  "(4, 26) -> (4, 44)",
+  "(4, 27) -> (4, 45)",
+  "(5, 4) -> (4, 46)",
+  "(5, 8) -> (4, 50)",
+  "(5, 9) -> (4, 51)",
+  "(5, 12) -> (4, 54)",
+  "(5, 14) -> (4, 56)",
+  "(5, 18) -> (4, 60)",
+  "(5, 19) -> (4, 61)",
+  "(5, 25) -> (4, 67)",
+  "(5, 26) -> (4, 68)",
+  "(5, 27) -> (4, 69)",
+  "(6, 2) -> (5, 8)",
+  "(7, 2) -> (6, 8)",
+  "(8, 2) -> (7, 8)",
+  "(8, 5) -> (7, 11)",
+  "(8, 7) -> (7, 13)",
+  "(9, 2) -> (8, 8)",
+  "(9, 9) -> (8, 15)",
+  "(10, 2) -> (9, 8)",
+  "(10, 7) -> (9, 13)",
+  "(10, 8) -> (9, 14)",
+  "(10, 10) -> (9, 16)",
+  "(11, 4) -> (10, 10)",
+  "(11, 11) -> (10, 17)",
+  "(11, 15) -> (10, 21)",
+  "(11, 16) -> (10, 22)",
+  "(11, 18) -> (10, 24)",
+  "(12, 2) -> (11, 8)",
+  "(13, 2) -> (12, 8)",
+  "(13, 8) -> (12, 14)",
+  "(13, 9) -> (12, 15)",
+  "(13, 11) -> (12, 17)",
+  "(14, 4) -> (13, 10)",
+  "(14, 11) -> (13, 17)",
+  "(14, 15) -> (13, 21)",
+  "(14, 16) -> (13, 22)",
+  "(14, 21) -> (13, 27)",
+  "(14, 22) -> (13, 28)",
+  "(14, 24) -> (13, 29)",
+  "(14, 26) -> (13, 30)",
+  "(14, 30) -> (13, 34)",
+  "(14, 31) -> (14, 12)",
+  "(15, 2) -> (15, 8)",
+  "(16, 0) -> (16, 6)",
+]
+`;
+
+exports[`Regexp 1`] = `
+"var r = /foobar/g;
+"
+`;
+
+exports[`Regexp 2`] = `
+Array [
+  "(1, 0) -> (1, 0)",
+  "(1, 4) -> (1, 4)",
+  "(1, 6) -> (1, 5)",
+  "(1, 8) -> (1, 6)",
+  "(1, 17) -> (1, 15)",
+]
+`;
+
+exports[`Simple function 1`] = `
+"function foo() {
+  bar();
+}
+"
+`;
+
+exports[`Simple function 2`] = `
+Array [
+  "(1, 0) -> (1, 0)",
+  "(1, 9) -> (1, 9)",
+  "(1, 12) -> (1, 12)",
+  "(1, 13) -> (1, 13)",
+  "(1, 15) -> (1, 15)",
+  "(2, 2) -> (1, 17)",
+  "(2, 5) -> (1, 20)",
+  "(2, 6) -> (1, 21)",
+  "(2, 7) -> (1, 22)",
+  "(3, 0) -> (1, 24)",
+]
+`;
+
+exports[`Single line comment 1`] = `
+"// Comment
+function foo() {
+  bar();
+}
+"
+`;
+
+exports[`Single line comment 2`] = `
+Array [
+  "(2, 0) -> (3, 4)",
+  "(2, 9) -> (3, 13)",
+  "(2, 12) -> (3, 16)",
+  "(2, 13) -> (3, 17)",
+  "(2, 15) -> (3, 19)",
+  "(3, 2) -> (3, 21)",
+  "(3, 5) -> (3, 24)",
+  "(3, 6) -> (3, 25)",
+  "(3, 7) -> (3, 26)",
+  "(4, 0) -> (3, 28)",
+]
+`;
+
+exports[`Stack-keyword property access 1`] = `
+"foo.a = 1.1;
+foo.do.switch.case.default = 2.2;
+foo.b = 3.3;
+"
+`;
+
+exports[`Stack-keyword property access 2`] = `
+Array [
+  "(1, 0) -> (1, 0)",
+  "(1, 3) -> (1, 3)",
+  "(1, 4) -> (1, 4)",
+  "(1, 6) -> (1, 5)",
+  "(1, 8) -> (1, 6)",
+  "(1, 11) -> (1, 9)",
+  "(2, 0) -> (1, 10)",
+  "(2, 3) -> (1, 13)",
+  "(2, 4) -> (1, 14)",
+  "(2, 6) -> (1, 16)",
+  "(2, 7) -> (1, 17)",
+  "(2, 13) -> (1, 23)",
+  "(2, 14) -> (1, 24)",
+  "(2, 18) -> (1, 28)",
+  "(2, 19) -> (1, 29)",
+  "(2, 27) -> (1, 36)",
+  "(2, 29) -> (1, 37)",
+  "(2, 32) -> (1, 40)",
+  "(3, 0) -> (1, 41)",
+  "(3, 3) -> (1, 44)",
+  "(3, 4) -> (1, 45)",
+  "(3, 6) -> (1, 46)",
+  "(3, 8) -> (1, 47)",
+  "(3, 11) -> (1, 50)",
+]
+`;
+
+exports[`String with quote 1`] = `
+"var foo = '\\\\'';
+"
+`;
+
+exports[`String with quote 2`] = `
+Array [
+  "(1, 0) -> (1, 0)",
+  "(1, 4) -> (1, 4)",
+  "(1, 8) -> (1, 8)",
+  "(1, 10) -> (1, 10)",
+  "(1, 14) -> (1, 13)",
+]
+`;
+
+exports[`String with semicolon 1`] = `
+"var foo = ';';
+"
+`;
+
+exports[`String with semicolon 2`] = `
+Array [
+  "(1, 0) -> (1, 0)",
+  "(1, 4) -> (1, 4)",
+  "(1, 8) -> (1, 8)",
+  "(1, 10) -> (1, 10)",
+  "(1, 13) -> (1, 13)",
+]
+`;
+
+exports[`Subclass handling 1`] = `
+"class Class extends Base {
+  constructor() {
+  }
+}
+"
+`;
+
+exports[`Subclass handling 2`] = `
+Array [
+  "(1, 0) -> (1, 0)",
+  "(1, 6) -> (1, 7)",
+  "(1, 12) -> (1, 14)",
+  "(1, 20) -> (1, 23)",
+  "(1, 25) -> (1, 27)",
+  "(2, 2) -> (1, 28)",
+  "(2, 13) -> (1, 39)",
+  "(2, 14) -> (1, 40)",
+  "(2, 16) -> (1, 41)",
+  "(3, 2) -> (1, 42)",
+  "(4, 0) -> (1, 43)",
+]
+`;
+
+exports[`Switch statements 1`] = `
+"switch (x) {
+  case a:
+    foo();
+    break;
+  default:
+    bar()
+}
+"
+`;
+
+exports[`Switch statements 2`] = `
+Array [
+  "(1, 0) -> (1, 0)",
+  "(1, 7) -> (1, 6)",
+  "(1, 8) -> (1, 7)",
+  "(1, 9) -> (1, 8)",
+  "(1, 11) -> (1, 9)",
+  "(2, 2) -> (1, 10)",
+  "(2, 7) -> (1, 15)",
+  "(2, 8) -> (1, 16)",
+  "(3, 4) -> (1, 17)",
+  "(3, 7) -> (1, 20)",
+  "(3, 8) -> (1, 21)",
+  "(3, 9) -> (1, 22)",
+  "(4, 4) -> (1, 23)",
+  "(4, 9) -> (1, 28)",
+  "(5, 2) -> (1, 29)",
+  "(5, 9) -> (1, 36)",
+  "(6, 4) -> (1, 37)",
+  "(6, 7) -> (1, 40)",
+  "(6, 8) -> (1, 41)",
+  "(7, 0) -> (1, 42)",
+]
+`;
+
+exports[`Template literals 1`] = `
+"\`abc\${ JSON.stringify({
+  clas: 'testing'
+}) }def\`;
+{
+  a();
+}
+"
+`;
+
+exports[`Template literals 2`] = `
+Array [
+  "(1, 0) -> (1, 0)",
+  "(1, 1) -> (1, 1)",
+  "(1, 4) -> (1, 4)",
+  "(1, 7) -> (1, 6)",
+  "(1, 11) -> (1, 10)",
+  "(1, 12) -> (1, 11)",
+  "(1, 21) -> (1, 20)",
+  "(1, 22) -> (1, 21)",
+  "(2, 2) -> (1, 22)",
+  "(2, 6) -> (1, 26)",
+  "(2, 8) -> (1, 28)",
+  "(3, 0) -> (1, 37)",
+  "(3, 1) -> (1, 38)",
+  "(3, 3) -> (1, 39)",
+  "(3, 4) -> (1, 40)",
+  "(3, 7) -> (1, 43)",
+  "(3, 8) -> (1, 44)",
+  "(4, 0) -> (1, 45)",
+  "(5, 2) -> (1, 46)",
+  "(5, 3) -> (1, 47)",
+  "(5, 4) -> (1, 48)",
+  "(5, 5) -> (1, 49)",
+  "(6, 0) -> (1, 50)",
+]
+`;
+
+exports[`Ternary operator 1`] = `
+"bar ? baz : bang;
+"
+`;
+
+exports[`Ternary operator 2`] = `
+Array [
+  "(1, 0) -> (1, 0)",
+  "(1, 4) -> (1, 3)",
+  "(1, 6) -> (1, 4)",
+  "(1, 10) -> (1, 7)",
+  "(1, 12) -> (1, 8)",
+  "(1, 16) -> (1, 12)",
+]
+`;
+
+exports[`This property access 1`] = `
+"var foo = this.foo;
+"
+`;
+
+exports[`This property access 2`] = `
+Array [
+  "(1, 0) -> (1, 0)",
+  "(1, 4) -> (1, 4)",
+  "(1, 8) -> (1, 7)",
+  "(1, 10) -> (1, 8)",
+  "(1, 14) -> (1, 12)",
+  "(1, 15) -> (1, 13)",
+  "(1, 18) -> (1, 16)",
+]
+`;
+
+exports[`True assignment 1`] = `
+"var foo = true;
+"
+`;
+
+exports[`True assignment 2`] = `
+Array [
+  "(1, 0) -> (1, 0)",
+  "(1, 4) -> (1, 4)",
+  "(1, 8) -> (1, 7)",
+  "(1, 10) -> (1, 8)",
+  "(1, 14) -> (1, 12)",
+]
+`;
+
+exports[`Try/catch/finally statement 1`] = `
+"try {
+  dangerous()
+} catch (e) {
+  handle(e)
+} finally {
+  cleanup()
+}
+"
+`;
+
+exports[`Try/catch/finally statement 2`] = `
+Array [
+  "(1, 0) -> (1, 0)",
+  "(1, 4) -> (1, 3)",
+  "(2, 2) -> (1, 4)",
+  "(2, 11) -> (1, 13)",
+  "(2, 12) -> (1, 14)",
+  "(3, 0) -> (1, 15)",
+  "(3, 2) -> (1, 16)",
+  "(3, 8) -> (1, 21)",
+  "(3, 9) -> (1, 22)",
+  "(3, 10) -> (1, 23)",
+  "(3, 12) -> (1, 24)",
+  "(4, 2) -> (1, 25)",
+  "(4, 8) -> (1, 31)",
+  "(4, 9) -> (1, 32)",
+  "(4, 10) -> (1, 33)",
+  "(5, 0) -> (1, 34)",
+  "(5, 2) -> (1, 35)",
+  "(5, 10) -> (1, 42)",
+  "(6, 2) -> (1, 43)",
+  "(6, 9) -> (1, 50)",
+  "(6, 10) -> (1, 51)",
+  "(7, 0) -> (1, 52)",
+]
+`;
+
+exports[`Undefined assignment 1`] = `
+"var i = undefined;
+"
+`;
+
+exports[`Undefined assignment 2`] = `
+Array [
+  "(1, 0) -> (1, 0)",
+  "(1, 4) -> (1, 4)",
+  "(1, 6) -> (1, 5)",
+  "(1, 8) -> (1, 6)",
+  "(1, 17) -> (1, 15)",
+]
+`;
+
+exports[`Unnamed class handling 1`] = `
+"let unnamed = class {
+  constructor() {
+  }
+}
+"
+`;
+
+exports[`Unnamed class handling 2`] = `
+Array [
+  "(1, 0) -> (1, 0)",
+  "(1, 4) -> (1, 4)",
+  "(1, 12) -> (1, 11)",
+  "(1, 14) -> (1, 12)",
+  "(1, 20) -> (1, 17)",
+  "(2, 2) -> (1, 18)",
+  "(2, 13) -> (1, 29)",
+  "(2, 14) -> (1, 30)",
+  "(2, 16) -> (1, 31)",
+  "(3, 2) -> (1, 32)",
+  "(4, 0) -> (1, 33)",
+]
+`;
+
+exports[`Void 0 assignment 1`] = `
+"var i = void 0;
+"
+`;
+
+exports[`Void 0 assignment 2`] = `
+Array [
+  "(1, 0) -> (1, 0)",
+  "(1, 4) -> (1, 4)",
+  "(1, 6) -> (1, 5)",
+  "(1, 8) -> (1, 6)",
+  "(1, 13) -> (1, 11)",
+  "(1, 14) -> (1, 12)",
+]
+`;
+
+exports[`With statement 1`] = `
+"with (obj) {
+  crock()
+}
+"
+`;
+
+exports[`With statement 2`] = `
+Array [
+  "(1, 0) -> (1, 0)",
+  "(1, 5) -> (1, 4)",
+  "(1, 6) -> (1, 5)",
+  "(1, 9) -> (1, 8)",
+  "(1, 11) -> (1, 9)",
+  "(2, 2) -> (1, 10)",
+  "(2, 7) -> (1, 15)",
+  "(2, 8) -> (1, 16)",
+  "(3, 0) -> (1, 17)",
+]
+`;
+
+exports[`for..of loop 1`] = `
+"for (const x of [
+  1,
+  2,
+  3
+]) {
+  console.log(x)
+}
+"
+`;
+
+exports[`for..of loop 2`] = `
+Array [
+  "(1, 0) -> (1, 0)",
+  "(1, 4) -> (1, 4)",
+  "(1, 5) -> (1, 5)",
+  "(1, 11) -> (1, 11)",
+  "(1, 13) -> (1, 13)",
+  "(1, 16) -> (1, 16)",
+  "(2, 2) -> (1, 17)",
+  "(2, 3) -> (1, 18)",
+  "(3, 2) -> (1, 19)",
+  "(3, 3) -> (1, 20)",
+  "(4, 2) -> (1, 21)",
+  "(5, 0) -> (1, 22)",
+  "(5, 1) -> (1, 23)",
+  "(5, 3) -> (1, 25)",
+  "(6, 2) -> (1, 27)",
+  "(6, 9) -> (1, 34)",
+  "(6, 10) -> (1, 35)",
+  "(6, 13) -> (1, 38)",
+  "(6, 14) -> (1, 39)",
+  "(6, 15) -> (1, 40)",
+  "(7, 0) -> (1, 42)",
+]
+`;
diff --git a/devtools/client/debugger/src/workers/pretty-print/tests/prettyFast.spec.js b/devtools/client/debugger/src/workers/pretty-print/tests/prettyFast.spec.js
new file mode 100644
index 0000000000..f1f7a1c635
--- /dev/null
+++ b/devtools/client/debugger/src/workers/pretty-print/tests/prettyFast.spec.js
@@ -0,0 +1,434 @@
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at <http://mozilla.org/MPL/2.0/>. */
+
+/*
+ * Copyright 2013 Mozilla Foundation and contributors
+ * Licensed under the New BSD license. See LICENSE.md or:
+ * http://opensource.org/licenses/BSD-2-Clause
+ */
+import { prettyFast } from "../pretty-fast";
+import { SourceMapConsumer } from "devtools/client/shared/vendor/source-map/source-map";
+
+const cases = [
+  {
+    name: "Simple function",
+    input: "function foo() { bar(); }",
+  },
+  {
+    name: "Nested function",
+    input: "function foo() { function bar() { debugger; } bar(); }",
+  },
+  {
+    name: "Immediately invoked function expression",
+    input: "(function(){thingy()}())",
+  },
+  {
+    name: "Single line comment",
+    input: `
+    // Comment
+    function foo() { bar(); }`,
+  },
+  {
+    name: "Multi line comment",
+    input: `
+    /* Comment
+    more comment */
+    function foo() { bar(); }
+    `,
+  },
+  { name: "Null assignment", input: "var i=null;" },
+  { name: "Undefined assignment", input: "var i=undefined;" },
+  { name: "Void 0 assignment", input: "var i=void 0;" },
+  {
+    name: "This property access",
+    input: "var foo=this.foo;\n",
+  },
+
+  {
+    name: "True assignment",
+    input: "var foo=true;\n",
+  },
+
+  {
+    name: "False assignment",
+    input: "var foo=false;\n",
+  },
+
+  {
+    name: "For loop",
+    input: "for (var i = 0; i < n; i++) { console.log(i); }",
+  },
+
+  {
+    name: "for..of loop",
+    input: "for (const x of [1,2,3]) { console.log(x) }",
+  },
+
+  {
+    name: "String with semicolon",
+    input: "var foo = ';';\n",
+  },
+
+  {
+    name: "String with quote",
+    input: 'var foo = "\'";\n',
+  },
+
+  {
+    name: "Function calls",
+    input: "var result=func(a,b,c,d);",
+  },
+
+  {
+    name: "Regexp",
+    input: "var r=/foobar/g;",
+  },
+
+  {
+    name: "In operator",
+    input: "if(foo in bar){doThing()}",
+    output: "if (foo in bar) {\n" + "  doThing()\n" + "}\n",
+  },
+  {
+    name: "With statement",
+    input: "with(obj){crock()}",
+  },
+  {
+    name: "New expression",
+    input: "var foo=new Foo();",
+  },
+  {
+    name: "Continue/break statements",
+    input: "while(1){if(x){continue}if(y){break}if(z){break foo}}",
+  },
+  {
+    name: "Instanceof",
+    input: "var a=x instanceof y;",
+  },
+  {
+    name: "Binary operators",
+    input: "var a=5*30;var b=5>>3;",
+  },
+  {
+    name: "Delete",
+    input: "delete obj.prop;",
+  },
+
+  {
+    name: "Try/catch/finally statement",
+    input: "try{dangerous()}catch(e){handle(e)}finally{cleanup()}",
+  },
+  {
+    name: "If/else statement",
+    input: "if(c){then()}else{other()}",
+  },
+  {
+    name: "If/else without curlies",
+    input: "if(c) a else b",
+  },
+  {
+    name: "Objects",
+    input: `
+      var o={a:1,
+      b:2};`,
+  },
+  {
+    name: "Do/while loop",
+    input: "do{x}while(y)",
+  },
+  {
+    name: "Arrays",
+    input: "var a=[1,2,3];",
+  },
+  {
+    name: "Arrays and spread operator",
+    input: "var a=[1,...[2,3],...[], 4];",
+  },
+  {
+    name: "Empty object/array literals",
+    input: `let a=[];const b={};c={...{},d: 42};for(let x of []){for(let y in {}){}}`,
+  },
+  {
+    name: "Code that relies on ASI",
+    input: `
+           var foo = 10
+           var bar = 20
+           function g() {
+             a()
+             b()
+           }`,
+  },
+  {
+    name: "Ternary operator",
+    input: "bar?baz:bang;",
+  },
+  {
+    name: "Switch statements",
+    input: "switch(x){case a:foo();break;default:bar()}",
+  },
+
+  {
+    name: "Multiple single line comments",
+    input: `function f() {
+             // a
+             // b
+             // c
+           }`,
+  },
+  {
+    name: "Indented multiline comment",
+    input: `function foo() {
+             /**
+              * java doc style comment
+              * more comment
+              */
+             bar();
+           }`,
+  },
+  {
+    name: "ASI return",
+    input: `function f() {
+             return
+             {}
+           }`,
+  },
+  {
+    name: "Non-ASI property access",
+    input: `[1,2,3]
+           [0]`,
+  },
+  {
+    name: "Non-ASI in",
+    input: `'x'
+           in foo`,
+  },
+
+  {
+    name: "Non-ASI function call",
+    input: `f
+           ()`,
+  },
+  {
+    name: "Non-ASI new",
+    input: `new
+           F()`,
+  },
+  {
+    name: "Getter and setter literals",
+    input: "var obj={get foo(){return this._foo},set foo(v){this._foo=v}}",
+  },
+  {
+    name: "Escaping backslashes in strings",
+    input: "'\\\\'\n",
+  },
+  {
+    name: "Escaping carriage return in strings",
+    input: "'\\r'\n",
+  },
+  {
+    name: "Escaping tab in strings",
+    input: "'\\t'\n",
+  },
+  {
+    name: "Escaping vertical tab in strings",
+    input: "'\\v'\n",
+  },
+  {
+    name: "Escaping form feed in strings",
+    input: "'\\f'\n",
+  },
+  {
+    name: "Escaping null character in strings",
+    input: "'\\0'\n",
+  },
+  {
+    name: "Bug 977082 - space between grouping operator and dot notation",
+    input: `JSON.stringify(3).length;
+           ([1,2,3]).length;
+           (new Date()).toLocaleString();`,
+  },
+  {
+    name: "Bug 975477 don't move end of line comments to next line",
+    input: `switch (request.action) {
+             case 'show': //$NON-NLS-0$
+               if (localStorage.hideicon !== 'true') { //$NON-NLS-0$
+                 chrome.pageAction.show(sender.tab.id);
+               }
+               break;
+             case 'hide': /*Multiline
+               Comment */
+               break;
+             default:
+               console.warn('unknown request'); //$NON-NLS-0$
+               // don't respond if you don't understand the message.
+               return;
+           }`,
+  },
+  {
+    name: "Const handling",
+    input: "const d = 'yes';\n",
+  },
+  {
+    name: "Let handling without value",
+    input: "let d;\n",
+  },
+  {
+    name: "Let handling with value",
+    input: "let d = 'yes';\n",
+  },
+  {
+    name: "Template literals",
+    // issue in acorn
+    input: "`abc${JSON.stringify({clas: 'testing'})}def`;{a();}",
+  },
+  {
+    name: "Class handling",
+    input: "class  Class{constructor(){}}",
+  },
+  {
+    name: "Subclass handling",
+    input: "class  Class  extends  Base{constructor(){}}",
+  },
+  {
+    name: "Unnamed class handling",
+    input: "let unnamed=class{constructor(){}}",
+  },
+  {
+    name: "Named class handling",
+    input: "let unnamed=class Class{constructor(){}}",
+  },
+  {
+    name: "Class extension within a function",
+    input: "(function() {  class X extends Y { constructor() {} }  })()",
+  },
+  {
+    name: "Bug 1261971 - indentation after switch statement",
+    input: "{switch(x){}if(y){}done();}",
+  },
+  {
+    name: "Bug 1206633 - spaces in for of",
+    input: "for (let tab of tabs) {}",
+  },
+  {
+    name: "Bug pretty-sure-3 - escaping line and paragraph separators",
+    input: "x = '\\u2029\\u2028';",
+  },
+  {
+    name: "Bug pretty-sure-4 - escaping null character before digit",
+    input: "x = '\\u00001';",
+  },
+  {
+    name: "Bug pretty-sure-5 - empty multiline comment shouldn't throw exception",
+    input: `{
+           /*
+           */
+             return;
+           }`,
+  },
+  {
+    name: "Bug pretty-sure-6 - inline comment shouldn't move parenthesis to next line",
+    input: `return /* inline comment */ (
+             1+1);`,
+  },
+  {
+    name: "Bug pretty-sure-7 - accessing a literal number property requires a space",
+    input: "0..toString()+x.toString();",
+  },
+  {
+    name: "Bug pretty-sure-8 - return and yield only accept arguments when on the same line",
+    input: `{
+             return
+             (x)
+             yield
+             (x)
+             yield
+             *x
+           }`,
+  },
+  {
+    name: "Bug pretty-sure-9 - accept unary operator at start of file",
+    input: "+ 0",
+  },
+  {
+    name: "Stack-keyword property access",
+    input: "foo.a=1.1;foo.do.switch.case.default=2.2;foo.b=3.3;\n",
+  },
+  {
+    name: "Dot handling with let which is identifier name",
+    input: "y.let.let = 1.23;\n",
+  },
+  {
+    name: "Dot handling with keywords which are identifier name",
+    input: "y.await.break.const.delete.else.return.new.yield = 1.23;\n",
+  },
+  {
+    name: "Optional chaining parsing support",
+    input: "x?.y?.z?.['a']?.check();\n",
+  },
+  {
+    name: "Private fields parsing support",
+    input: `
+      class MyClass {
+        constructor(a) {
+          this.#a = a;this.#b = Math.random();this.ab = this.#getAB();
+        }
+        #a
+        #b = "default value"
+        static #someStaticPrivate
+        #getA() {
+          return this.#a;
+        }
+        #getAB() {
+          return this.#getA()+this.
+            #b
+        }
+      }
+    `,
+  },
+  {
+    name: "Long parenthesis",
+    input: `
+      if (thisIsAVeryLongVariable && thisIsAnotherOne || yetAnotherVeryLongVariable) {
+        (thisIsAnotherOne = thisMayReturnNull() || "hi", thisIsAVeryLongVariable = 42, yetAnotherVeryLongVariable && doSomething(true /* do it well */,thisIsAVeryLongVariable, thisIsAnotherOne, yetAnotherVeryLongVariable))
+      }
+      for (let thisIsAnotherVeryLongVariable = 0; i < thisIsAnotherVeryLongVariable.length; thisIsAnotherVeryLongVariable++) {}
+      const x = ({thisIsAnotherVeryLongPropertyName: "but should not cause the paren to be a line delimiter"})
+    `,
+  },
+  {
+    name: "Fat arrow function",
+    input: `
+      const a = () => 42
+      addEventListener("click", e => { return false });
+      const sum = (c,d) => c+d
+    `,
+  },
+];
+
+const includesOnly = cases.find(({ only }) => only);
+
+for (const { name, input, only, skip } of cases) {
+  if ((includesOnly && !only) || skip) {
+    continue;
+  }
+  test(name, async () => {
+    const actual = prettyFast(input, {
+      indent: "  ",
+      url: "test.js",
+    });
+
+    expect(actual.code).toMatchSnapshot();
+
+    const smc = await new SourceMapConsumer(actual.map.toJSON());
+    const mappings = [];
+    smc.eachMapping(
+      ({ generatedColumn, generatedLine, originalColumn, originalLine }) => {
+        mappings.push(
+          `(${originalLine}, ${originalColumn}) -> (${generatedLine}, ${generatedColumn})`
+        );
+      }
+    );
+    expect(mappings).toMatchSnapshot();
+  });
+}