mirror of https://github.com/tc39/test262.git
45 lines
1.3 KiB
JavaScript
45 lines
1.3 KiB
JavaScript
// This file was procedurally generated from the following sources:
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// - src/class-elements/private-field-after-optional-chain.case
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// - src/class-elements/default/cls-decl.template
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/*---
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description: OptionalChain.PrivateIdentifier is a valid syntax (field definitions in a class declaration)
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esid: prod-FieldDefinition
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features: [class-fields-private, optional-chaining, class]
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flags: [generated]
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info: |
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Updated Productions
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OptionalChain[Yield, Await] :
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`?.` `[` Expression[+In, ?Yield, ?Await] `]`
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`?.` IdentifierName
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`?.` Arguments[?Yield, ?Await]
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`?.` TemplateLiteral[?Yield, ?Await, +Tagged]
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OptionalChain[?Yield, ?Await] `[` Expression[+In, ?Yield, ?Await] `]`
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OptionalChain[?Yield, ?Await] `.` IdentifierName
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OptionalChain[?Yield, ?Await] Arguments[?Yield, ?Await]
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OptionalChain[?Yield, ?Await] TemplateLiteral[?Yield, ?Await, +Tagged]
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OptionalChain[?Yield, ?Await] `.` PrivateIdentifier
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---*/
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class C {
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#f = 'Test262';
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method(o) {
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return o?.c.#f;
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}
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}
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let c = new C();
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let o = {c: c};
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assert.sameValue(c.method(o), 'Test262');
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assert.sameValue(c.method(null), undefined);
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assert.sameValue(c.method(undefined), undefined);
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o = {c: new Object()};
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assert.throws(TypeError, function() {
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c.method(o);
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}, 'accessed private field from an ordinary object');
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