Implement Bun.hash.xxHash32|64()

[versecafe]

What does this PR do?

This adds the xxHash32 & 64 algorithms to Bun.hash and the bun polyfill using zigs std.hash

• Documentation or TypeScript types
• Code changes

How did you verify your code works?

Wrote automated tests

• I checked the lifetime of memory allocated to verify it's (1) freed and (2) only freed when it should be
• I included a test for the new code, or an existing test covers it
• JSValue used outside outside of the stack is either wrapped in a JSC.Strong or is JSValueProtect'ed
• I wrote TypeScript/JavaScript tests and they pass locally (bun-debug test test-file-name.test)

import { describe, it, expect } from "bun:test";

describe("xxHash functions", () => {
  it("Bun.hash.xxHash32()", () => {
    expect(Bun.hash.xxHash32("hello world")).toBe(0xcebb6622);
    expect(Bun.hash.xxHash32(new TextEncoder().encode("hello world"))).toBe(
      0xcebb6622,
    );
  });
  it("Bun.hash.xxHash64()", () => {
    expect(Bun.hash.xxHash64("hello world")).toBe(0x45ab6734b21e6968n);
    expect(Bun.hash.xxHash64(new TextEncoder().encode("hello world"))).toBe(
      0x45ab6734b21e6968n,
    );
  });
  it("Bun.hash.xxHash3()", () => {
    expect(Bun.hash.xxHash3("hello world")).toBe(0xd447b1ea40e6988bn);
    expect(Bun.hash.xxHash3(new TextEncoder().encode("hello world"))).toBe(
      0xd447b1ea40e6988bn,
    );
  });
});

[Gobd]

Does Zig also have xxHash3 and if so could that also be added?

[versecafe]

@Gobd added xxhash3

[Jarred-Sumner]

Thank you