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0974991d05
From the spec: https://tc39.es/ecma262/#sec-punctuators OptionalChainingPunctuator :: ?. [lookahead ∉ DecimalDigit] We were missing the lookahead and therefore incorrectly treating any '?.' as TokenType::QuestionMarkPeriod. Fixes #4409.
20 lines
531 B
JavaScript
20 lines
531 B
JavaScript
test("basic functionality", () => {
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const x = 1;
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expect(x === 1 ? true : false).toBeTrue();
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expect(x ? x : 0).toBe(x);
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expect(1 < 2 ? true : false).toBeTrue();
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expect(0 ? 1 : 1 ? 10 : 20).toBe(10);
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expect(0 ? (1 ? 1 : 10) : 20).toBe(20);
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});
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test("object values", () => {
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const o = {};
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o.f = true;
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expect(o.f ? true : false).toBeTrue();
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expect(1 ? o.f : null).toBeTrue();
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});
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test("issue #4409, '?.' followed by decimal digit", () => {
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expect("return false?.1:.2").toEvalTo(0.2);
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});
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