mirror of
https://github.com/vercel-labs/scriptc.git
synced 2026-11-06 08:23:19 +08:00
Chris Tate
e665913200
- An enumerable getter or setter on an array printed as undefined: the property loop rendered the accessor's unused data slot. It now prints [Getter], [Setter] or [Getter/Setter], as util.inspect does. - Object.defineProperty on a live native array with a number key that is not an array index (-3, 1.5) skipped the numeric-property fence and lost the property on commit. A number key now takes the same fence as its string spelling.
62 lines
1.9 KiB
TypeScript
62 lines
1.9 KiB
TypeScript
// console.log of an array lists its named and numeric properties after the
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// elements, as Node's util.inspect does: typed arrays written through an
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// unknown view, regex match results, arrays from JSON.parse, holes, Node's
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// column grouping and the 100-entry limit.
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type Bag = Record<string, unknown>;
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const named: number[] = [1, 2, 3];
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(named as unknown as Bag).extra = "named";
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console.log(named);
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const words: string[] = ["a"];
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(words as unknown as Bag)["my-key"] = { deep: [1, { x: 1 }] };
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console.log(words, [words]);
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const empty: number[] = [];
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(empty as unknown as Bag).x = 1;
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console.log(empty);
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const numeric: number[] = [1, 2];
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numeric[-1] = 5;
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numeric[1.5] = 6;
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console.log(numeric);
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const holes: (number | undefined)[] = [1, , 3];
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(holes as unknown as Bag).tail = true;
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console.log(holes);
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const grid: number[] = [];
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for (let i = 0; i < 30; i++) grid.push(i * 7);
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(grid as unknown as Bag).label = "grid";
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console.log(grid);
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const long: number[] = [];
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for (let i = 0; i < 120; i++) long.push(i);
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(long as unknown as Bag).label = "long";
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console.log(long);
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const full: number[] = [];
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for (let i = 0; i < 100; i++) full.push(i);
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(full as unknown as Bag).label = "full";
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console.log(full);
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const match = /b(?<rest>c)?/.exec("abc");
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console.log(match);
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const plainMatch = /x/.exec("axb");
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console.log(plainMatch);
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const parsed = JSON.parse("[1,2,3,4,5,6,7,8]") as unknown as Bag;
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parsed.extra = "named";
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console.log(parsed);
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const plain: number[] = [1, 2, 3];
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console.log(plain, [] as number[]);
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const accessed: number[] = [1, 2];
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const accessedBag = accessed as unknown as Bag;
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Object.defineProperty(accessedBag, "both", { get: () => 1, set: (_v: unknown) => {}, enumerable: true });
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Object.defineProperty(accessedBag, "getter", { get: () => 2, enumerable: true });
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Object.defineProperty(accessedBag, "setter", { set: (_v: unknown) => {}, enumerable: true });
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console.log(accessed);
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