mirror of
https://github.com/vercel-labs/scriptc.git
synced 2026-10-16 05:00:59 +08:00
Chris Tate
94fd361b54
Represent ordinary JavaScript arrays with hole, value, and explicit-undefined states; add sparse side storage and carry missing values through the frontend, native backends, runtime, and Node-facing consumers.
15 lines
641 B
TypeScript
15 lines
641 B
TypeScript
// Generic callback values remain generic until each HOF call supplies a
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// concrete signature. The optional-array prepass must not ask the generic
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// parameter for a monomorphic ABI too early.
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const identity = <T>(value: T): T => value;
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const pair = <A, B>(left: A, right: B): string => `${left}|${right}`;
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const numberIdentity = identity<number | undefined>;
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console.log([1, 2, 3].map(numberIdentity).join("+"));
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console.log([1, 2, 3].filter((value) => value > 1).join(","));
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console.log([1, 2, 3].reduce((sum, value) => sum + value, 0));
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console.log(pair(7, "seven"));
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const f: (value: number) => number = identity;
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console.log(f(41));
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