// |reftest| error:SyntaxError 'use strict'; // This file was procedurally generated from the following sources: // - src/generators/yield-identifier-spread-strict.case // - src/generators/default/declaration.template /*--- description: It's an early error if the AssignmentExpression is a function body with yield as an identifier in strict mode. (Generator Function declaration) esid: prod-GeneratorDeclaration features: [object-spread, generators] flags: [generated, onlyStrict] negative: phase: parse type: SyntaxError info: | 14.4 Generator Function Definitions GeneratorDeclaration : function * BindingIdentifier ( FormalParameters ) { GeneratorBody } Spread Properties PropertyDefinition[Yield]: (...) ...AssignmentExpression[In, ?Yield] ---*/ $DONOTEVALUATE(); var callCount = 0; function *gen() { callCount += 1; return { ...(function() { var yield; throw new Test262Error(); }()), } } var iter = gen(); assert.sameValue(callCount, 1);