@marko/compiler/dist/util/quick-hash.js

Marko template to JS compiler.

"use strict";exports.__esModule = true;exports.Hash = void 0; /**
 * Outputs a noncryptographic hash as a safe integer (<= Number.MAX_SAFE_INTEGER).
 */
class Hash {
  a = 0xdeadbeef;
  b = 0x9e3779b9;

  update(s) {
    let a = this.a;
    let b = this.b;
    for (let i = s.length; i--;) {
      a = Math.imul(a ^ s.charCodeAt(i), 0x85ebca6b);
      a = a << 13 | a >>> 19;
      b = Math.imul(b ^ a, 0xc2b2ae35);
      b = b << 17 | b >>> 15;
      a ^= b >>> 11;
      b ^= a >>> 7;
    }

    this.a = a;
    this.b = b;
    return this;
  }

  digest() {
    let a = this.a;
    let b = this.b;
    a = Math.imul(a ^ b, 0x27d4eb2f);
    a ^= a >>> 16;
    b = Math.imul(b ^ a, 0x165667b1);
    b ^= b >>> 15;
    a = Math.imul(a ^ b >>> 13, 0x5bd1e995);
    return (b & 0x1fffff) * 0x100000000 + a;
  }
}exports.Hash = Hash;