21 lines
656 B
JavaScript
21 lines
656 B
JavaScript
const sym = Symbol("test");
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const sym2 = Symbol("not enumerable");
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const src = { a: "string" };
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Object.defineProperty(src, "b", { value: "not enumerable" })
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Object.defineProperty(src, sym, { enumerable: true, value: "symbol" });
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Object.defineProperty(src, sym2, { value: "not enumerable" });
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const {...rest} = src;
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expect(rest[sym]).toBe("symbol");
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expect(rest.a).toBe("string");
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expect(Object.getOwnPropertyNames(rest)).toEqual(["a"]);
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expect(Object.getOwnPropertySymbols(rest)).toEqual([sym]);
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const { [sym]: dst, ...noSym } = src;
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expect(dst).toBe("symbol");
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expect(noSym.a).toBe("string");
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expect(Object.getOwnPropertySymbols(noSym)).toEqual([]);
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