| // This file was procedurally generated from the following sources: |
| // - src/dstr-binding/ary-ptrn-rest-id.case |
| // - src/dstr-binding/default/async-gen-func-expr.template |
| /*--- |
| description: Lone rest element (async generator function expression) |
| esid: sec-asyncgenerator-definitions-evaluation |
| features: [async-iteration] |
| flags: [generated, async] |
| info: | |
| AsyncGeneratorExpression : async [no LineTerminator here] function * ( FormalParameters ) { |
| AsyncGeneratorBody } |
| |
| [...] |
| 3. Let closure be ! AsyncGeneratorFunctionCreate(Normal, FormalParameters, |
| AsyncGeneratorBody, scope, strict). |
| [...] |
| |
| |
| 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]; |
| |
| |
| var callCount = 0; |
| var f; |
| f = async function*([...x]) { |
| 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); |
| callCount = callCount + 1; |
| }; |
| |
| f(values).next().then(() => { |
| assert.sameValue(callCount, 1, 'invoked exactly once'); |
| }).then($DONE, $DONE); |