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// Test TDZ for short-circuit compound assignments.
// TDZ for lexical |let| bindings.
{
assertThrowsInstanceOf(() => { let a = (a &&= 0); }, ReferenceError);
assertThrowsInstanceOf(() => { let a = (a ||= 0); }, ReferenceError);
assertThrowsInstanceOf(() => { let a = (a ??= 0); }, ReferenceError);
}
// TDZ for lexical |const| bindings.
{
assertThrowsInstanceOf(() => { const a = (a &&= 0); }, ReferenceError);
assertThrowsInstanceOf(() => { const a = (a ||= 0); }, ReferenceError);
assertThrowsInstanceOf(() => { const a = (a ??= 0); }, ReferenceError);
}
// TDZ for parameter expressions.
{
assertThrowsInstanceOf((a = (b &&= 0), b) => {}, ReferenceError);
assertThrowsInstanceOf((a = (b ||= 0), b) => {}, ReferenceError);
assertThrowsInstanceOf((a = (b ??= 0), b) => {}, ReferenceError);
}
// TDZ for |class| bindings.
{
assertThrowsInstanceOf(() => { class a extends (a &&= 0) {} }, ReferenceError);
assertThrowsInstanceOf(() => { class a extends (a ||= 0) {} }, ReferenceError);
assertThrowsInstanceOf(() => { class a extends (a ??= 0) {} }, ReferenceError);
}
// TDZ for lexical |let| bindings with conditional assignment.
{
assertThrowsInstanceOf(() => {
const False = false;
False &&= b;
b = 2;
let b;
}, ReferenceError);
assertThrowsInstanceOf(() => {
const True = true;
True ||= b;
b = 2;
let b;
}, ReferenceError);
assertThrowsInstanceOf(() => {
const NonNull = {};
NonNull ??= b;
b = 2;
let b;
}, ReferenceError);
}
if (typeof reportCompare === "function")
reportCompare(0, 0);
|
