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28 lines
644 B
JavaScript
28 lines
644 B
JavaScript
// Copyright 2019 Google, Inc. All rights reserved.
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// This code is governed by the BSD license found in the LICENSE file.
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/*---
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esid: prod-OptionalExpression
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description: >
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optional chain on recursive optional expression
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info: |
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Left-Hand-Side Expressions
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OptionalExpression:
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OptionalExpression OptionalChain
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features: [optional-chaining]
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---*/
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const obj = {
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a: {
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b: 22
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}
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};
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function fn () {
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return {};
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}
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// OptionalExpression (MemberExpression OptionalChain) OptionalChain
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assert.sameValue(22, obj?.a?.b);
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// OptionalExpression (CallExpression OptionalChain) OptionalChain
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assert.sameValue(undefined, fn()?.a?.b);
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