@techmely/utils/id.global.js

Collection of helpful JavaScript / TypeScript utils

/*!
 * @techmely/utils
 * Copyright(c) 2021-2024 Techmely <techmely.creation@gmail.com>
 * MIT Licensed
 */

"use strict";
(() => {
  var __require = /* @__PURE__ */ ((x) => typeof require !== "undefined" ? require : typeof Proxy !== "undefined" ? new Proxy(x, {
    get: (a, b) => (typeof require !== "undefined" ? require : a)[b]
  }) : x)(function(x) {
    if (typeof require !== "undefined")
      return require.apply(this, arguments);
    throw Error('Dynamic require of "' + x + '" is not supported');
  });

  // ../../node_modules/nanoid/index.js
  var import_node_crypto = __require("node:crypto");
  var POOL_SIZE_MULTIPLIER = 128;
  var pool;
  var poolOffset;
  function fillPool(bytes) {
    if (!pool || pool.length < bytes) {
      pool = Buffer.allocUnsafe(bytes * POOL_SIZE_MULTIPLIER);
      import_node_crypto.webcrypto.getRandomValues(pool);
      poolOffset = 0;
    } else if (poolOffset + bytes > pool.length) {
      import_node_crypto.webcrypto.getRandomValues(pool);
      poolOffset = 0;
    }
    poolOffset += bytes;
  }
  function random(bytes) {
    fillPool(bytes -= 0);
    return pool.subarray(poolOffset - bytes, poolOffset);
  }
  function customRandom(alphabet, defaultSize, getRandom) {
    let mask = (2 << 31 - Math.clz32(alphabet.length - 1 | 1)) - 1;
    let step = Math.ceil(1.6 * mask * defaultSize / alphabet.length);
    return (size = defaultSize) => {
      let id = "";
      while (true) {
        let bytes = getRandom(step);
        let i = step;
        while (i--) {
          id += alphabet[bytes[i] & mask] || "";
          if (id.length === size)
            return id;
        }
      }
    };
  }
  function customAlphabet(alphabet, size = 21) {
    return customRandom(alphabet, size, random);
  }

  // src/id.ts
  var generateId = customAlphabet(
    "123456789ABCDEFGHJKLMNPQRSTUVWXYZabcdefghijkmnopqrstuvwxyz"
  );
  var DEFAULT_PREFIX_ID_LENGTH = 22;
  function generatePrefixId(prefix = "key", length = DEFAULT_PREFIX_ID_LENGTH) {
    return `${prefix}_${generateId(length)}`;
  }
})();