mirror of https://github.com/tc39/test262.git
49 lines
1.6 KiB
JavaScript
49 lines
1.6 KiB
JavaScript
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// This file was procedurally generated from the following sources:
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// - src/dstr-binding/ary-ptrn-rest-id-iter-val-err.case
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// - src/dstr-binding/error/const-stmt.template
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/*---
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description: Error forwarding when IteratorValue returns an abrupt completion (`const` statement)
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esid: sec-let-and-const-declarations-runtime-semantics-evaluation
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es6id: 13.3.1.4
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features: [Symbol.iterator, destructuring-binding]
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flags: [generated]
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info: |
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LexicalBinding : BindingPattern Initializer
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1. Let rhs be the result of evaluating Initializer.
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2. Let value be GetValue(rhs).
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3. ReturnIfAbrupt(value).
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4. Let env be the running execution context's LexicalEnvironment.
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5. Return the result of performing BindingInitialization for BindingPattern
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using value and env as the arguments.
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13.3.3.6 Runtime Semantics: IteratorBindingInitialization
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BindingRestElement : ... BindingIdentifier
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1. Let lhs be ResolveBinding(StringValue of BindingIdentifier,
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environment).
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2. ReturnIfAbrupt(lhs). 3. Let A be ArrayCreate(0). 4. Let n=0. 5. Repeat,
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[...]
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c. Let nextValue be IteratorValue(next).
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d. If nextValue is an abrupt completion, set iteratorRecord.[[done]] to
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true.
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e. ReturnIfAbrupt(nextValue).
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---*/
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var poisonedValue = Object.defineProperty({}, 'value', {
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get: function() {
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throw new Test262Error();
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}
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});
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var iter = {};
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iter[Symbol.iterator] = function() {
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return {
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next: function() {
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return poisonedValue;
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}
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};
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};
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assert.throws(Test262Error, function() {
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const [...x] = iter;
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});
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