mirror of
https://github.com/vercel-labs/scriptc.git
synced 2026-10-23 06:10:02 +08:00
Chris Tate
97a489845a
- Carry BigInts, Sets, and regular expressions through checked native storage without a JavaScript engine. - Preserve dictionary aliases, spreads, frozen metadata, and fluent initialization helpers. - Collect checked object and closure cycles while preserving live references.
37 lines
2.3 KiB
JavaScript
37 lines
2.3 KiB
JavaScript
function identity(value) { return value; }
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const big = identity(18446744073709551615n);
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const zero = identity(0n);
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const negative = identity(-9223372036854775808n);
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console.log(typeof big, String(big), Boolean(big), Boolean(zero));
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console.log(big === identity(18446744073709551615n), big === identity(18446744073709551615));
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console.log(String(big + identity(1n)), String(negative + identity(-1n)), big + "!");
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const record = { pointer: big, nested: [negative, zero] };
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console.log(record.pointer.toString(16), record.nested.map(value => String(value)).join(","));
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console.log(String(structuredClone(record).pointer));
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console.log(Object.fromEntries([[big, "pointer"]])["18446744073709551615"]);
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for (const value of [big, [big], { value: big }]) {
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try { console.log(JSON.stringify(value)); } catch (error) { console.log(error.name, error.message); }
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}
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console.log(JSON.stringify(record, (_key, value) => typeof value === "bigint" ? String(value) : value));
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for (const other of [1, null, undefined, true]) {
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try { console.log(big + other); } catch (error) { console.log(error.name, error.message); }
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}
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console.log(Object.prototype.toString.call(big), Number(identity(42n)));
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try { new WeakMap().set(big, 1); } catch (error) { console.log(error.name, error.message); }
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const values = new Map([[big, "first"], [identity(18446744073709551615n), "second"]]);
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console.log(values.size, values.get(identity(18446744073709551615n)));
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console.log([big].includes(identity(18446744073709551615n)), [big].indexOf(identity(18446744073709551615n)));
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console.log(Number({ valueOf() { return identity(42n); } }));
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for (const radix of [2, 10, 36, undefined, 1, 37, null, 2n]) {
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try { console.log(big.toString(radix)); } catch (error) { console.log(error.name, error.message); }
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}
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try { console.log(+big); } catch (error) { console.log(error.name, error.message); }
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try { new Map([big]); } catch (error) { console.log(error.name, error.message); }
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function describe(value) { return typeof value === "bigint" ? value.toString(16) : "other"; }
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console.log(describe(big), describe(1), describe(null));
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const buffer = identity(Buffer.from([65, 255]));
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for (const encoding of ["HEX", "latin1", "utf8", "invalid", undefined, null, 0, 16]) {
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try { console.log(buffer.toString(encoding)); } catch (error) { console.log(error.name, error.message); }
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}
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console.log(identity(Buffer.from([])).toString("invalid"));
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