mirror of
https://github.com/vercel-labs/scriptc.git
synced 2026-10-23 06:10:02 +08:00
Chris Tate
1600935411
* feat: add static BigInt support * fix: prevent BigInt width overflow on WASI * fix: harden BigInt formatting sizes * test: record BigInt WASI parity baseline
16 lines
652 B
TypeScript
16 lines
652 B
TypeScript
const b = Buffer.alloc(24);
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console.log("offsets", b.writeBigUInt64BE(0xffffffffffffffffn), b.writeBigInt64LE(-2n, 8));
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console.log("reads", b.readBigUInt64BE(), b.readBigUint64BE(), b.readBigInt64LE(8));
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b.writeBigUint64LE(0x0123456789abcdefn, 16);
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console.log("hex", b.toString("hex"), b.readBigUInt64LE(16).toString(16));
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const view = new DataView(b.buffer, 4, 16);
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view.setBigUint64(0, 0xfedcba9876543210n);
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view.setBigInt64(8, -1234567890123456789n, true);
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console.log("view", view.getBigUint64(0).toString(16), view.getBigInt64(8, true));
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view.setBigInt64(0, (1n << 80n) + 5n);
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console.log("wrap", view.getBigInt64(0), view.getBigUint64(0));
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