31 lines
670 B
TypeScript
31 lines
670 B
TypeScript
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import { buffer, type InternalBuffer, map, symbol } from "../primordials.ts";
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export const abs = new map(true);
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export const abKey: unique symbol = symbol.getSymbol("ArrayBuffer.impl") as any;
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export class ArrayBuffer {
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public [abKey]!: InternalBuffer;
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public get byteLength() {
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return this[abKey].length;
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}
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public get byteOffset() {
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return 0;
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}
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public constructor(val: unknown) {
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if (buffer.isBuff(val)) this[abKey] = val;
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else this[abKey] = buffer.buff(Number(val));
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}
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}
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export function getAB(buff: InternalBuffer): ArrayBuffer {
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let res = abs.get(buff);
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if (res == null) {
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res = new ArrayBuffer(buff);
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abs.set(buff, res);
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}
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return res;
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}
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