yield-identifier-spread-strict-strict.js (1177B)
1 // |reftest| error:SyntaxError 2 'use strict'; 3 // This file was procedurally generated from the following sources: 4 // - src/generators/yield-identifier-spread-strict.case 5 // - src/generators/default/class-expr-method.template 6 /*--- 7 description: It's an early error if the AssignmentExpression is a function body with yield as an identifier in strict mode. (Generator method as a ClassExpression element) 8 esid: prod-GeneratorMethod 9 features: [object-spread, generators] 10 flags: [generated, onlyStrict] 11 negative: 12 phase: parse 13 type: SyntaxError 14 info: | 15 ClassElement : 16 MethodDefinition 17 18 MethodDefinition : 19 GeneratorMethod 20 21 14.4 Generator Function Definitions 22 23 GeneratorMethod : 24 * PropertyName ( UniqueFormalParameters ) { GeneratorBody } 25 26 27 Spread Properties 28 29 PropertyDefinition[Yield]: 30 (...) 31 ...AssignmentExpression[In, ?Yield] 32 33 ---*/ 34 $DONOTEVALUATE(); 35 36 var callCount = 0; 37 38 var C = class {*gen() { 39 callCount += 1; 40 return { 41 ...(function() { 42 var yield; 43 throw new Test262Error(); 44 }()), 45 } 46 }} 47 48 var gen = C.prototype.gen; 49 50 var iter = gen(); 51 52 53 54 assert.sameValue(callCount, 1);