mirror of
https://github.com/vercel-labs/scriptc.git
synced 2026-10-03 08:58:23 +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.
38 lines
1.3 KiB
JavaScript
38 lines
1.3 KiB
JavaScript
let order = "";
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function offset(value) {
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return { valueOf() { order += "o"; return value; } };
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}
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function length(value) {
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return { valueOf() { order += "l"; return value; } };
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}
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const buffer = new ArrayBuffer(8);
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for (const n of [-1, 1, 8, 12, Infinity]) {
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order = "";
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try {
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// @ts-expect-error Numeric inputs use the JavaScript coercion protocol.
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const view = new Uint32Array(buffer, offset(n), length(0));
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console.log(view.byteOffset, view.length);
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} catch (error) {
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if (error instanceof Error) console.log(error.name);
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}
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console.log(order);
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}
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for (const n of [-1, 1, 9]) {
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order = "";
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try {
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// @ts-expect-error Numeric inputs use the JavaScript coercion protocol.
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const view = new DataView(buffer, offset(n), length(0));
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console.log(view.byteOffset, view.byteLength);
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} catch (error) {
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if (error instanceof Error) console.log(error.name);
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}
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console.log(order);
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}
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order = "";
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// @ts-expect-error Extra arguments are evaluated but ignored for array inputs.
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const copied = new Uint32Array([5, 6], offset(-1), length(-1));
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console.log(copied.length, copied[0], copied[1], order);
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// @ts-expect-error Extra arguments are evaluated but ignored for length inputs.
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const allocated = new Uint8Array(3, offset(-1), length(-1));
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console.log(allocated.length, order);
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