mirror of
https://github.com/vercel-labs/scriptc.git
synced 2026-10-23 06:10:02 +08:00
Chris Tate
f668fc4bfd
- Add shared ArrayBuffer storage and native Unicode grapheme segmentation. - Preserve builtin modules, globals, and byte views across JavaScript bindings. - Compile package initialization expressions and optional native callables.
33 lines
1.3 KiB
TypeScript
33 lines
1.3 KiB
TypeScript
import { alias, metadata, subarray, slice, change, same, clone, describe, coerceWrites } from "./values.js";
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const storage = new ArrayBuffer(12);
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const bytes = new Uint8Array(storage, 3, 6);
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bytes[0] = 11;
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const stored: Uint8Array = alias(bytes);
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console.log(stored === bytes, same(bytes, bytes), same(bytes, bytes.subarray(0)));
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metadata(stored, storage);
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change(stored, 0, 37);
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console.log(bytes[0], stored[0]);
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const view: Uint8Array = subarray(stored, 1, 4);
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console.log(view.byteOffset, view.byteLength, view.buffer === storage);
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view[0] = 19;
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console.log(bytes[1]);
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const independent: Uint8Array = slice(stored, 1, 4);
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independent[0] = 99;
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console.log(independent.buffer !== storage, bytes[1], independent[0]);
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const copied: Uint8Array = clone(stored);
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copied[0] = 55;
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console.log(copied !== bytes, copied.buffer !== storage, bytes[0], copied[0]);
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const buffer = Buffer.alloc(6);
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buffer[0] = 3;
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const bufferView: Uint8Array = slice(buffer, 0, 2);
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bufferView[0] = 17;
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console.log(buffer[0], bufferView[0]);
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const retained: Uint8Array = alias(new Uint8Array([4, 5, 6]));
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console.log(retained[0], retained[1], retained[2]);
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coerceWrites(retained);
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describe(Buffer.from("hi"));
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describe(new Uint8Array([104, 105]));
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describe(clone(Buffer.from("hi")));
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describe(slice(Buffer.from("hi"), 0, 1));
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