build: split up into multiple projects, use kotlin DLS

lib/src/stdlib/arrays/ArrayBuffer.ts

@@ -0,0 +1,30 @@
+import { buffer, type InternalBuffer, map, symbol } from "../primordials.ts";
+
+export const abs = new map(true);
+export const abKey: unique symbol = symbol.getSymbol("ArrayBuffer.impl") as any;
+
+export class ArrayBuffer {
+	public [abKey]!: InternalBuffer;
+
+	public get byteLength() {
+		return this[abKey].length;
+	}
+	public get byteOffset() {
+		return 0;
+	}
+
+	public constructor(val: unknown) {
+		if (buffer.isBuff(val)) this[abKey] = val;
+		else this[abKey] = buffer.buff(Number(val));
+	}
+}
+
+export function getAB(buff: InternalBuffer): ArrayBuffer {
+	let res = abs.get(buff);
+	if (res == null) {
+		res = new ArrayBuffer(buff);
+		abs.set(buff, res);
+	}
+
+	return res;
+}