uuniq/dist/Symbolic.class.js

Short but unique IDs.

"use strict";
var __create = Object.create;
var __defProp = Object.defineProperty;
var __getOwnPropDesc = Object.getOwnPropertyDescriptor;
var __getOwnPropNames = Object.getOwnPropertyNames;
var __getProtoOf = Object.getPrototypeOf;
var __hasOwnProp = Object.prototype.hasOwnProperty;
var __export = (target, all) => {
  for (var name in all)
    __defProp(target, name, { get: all[name], enumerable: true });
};
var __copyProps = (to, from, except, desc) => {
  if (from && typeof from === "object" || typeof from === "function") {
    for (let key of __getOwnPropNames(from))
      if (!__hasOwnProp.call(to, key) && key !== except)
        __defProp(to, key, { get: () => from[key], enumerable: !(desc = __getOwnPropDesc(from, key)) || desc.enumerable });
  }
  return to;
};
var __toESM = (mod, isNodeMode, target) => (target = mod != null ? __create(__getProtoOf(mod)) : {}, __copyProps(
  // If the importer is in node compatibility mode or this is not an ESM
  // file that has been converted to a CommonJS file using a Babel-
  // compatible transform (i.e. "__esModule" has not been set), then set
  // "default" to the CommonJS "module.exports" for node compatibility.
  isNodeMode || !mod || !mod.__esModule ? __defProp(target, "default", { value: mod, enumerable: true }) : target,
  mod
));
var __toCommonJS = (mod) => __copyProps(__defProp({}, "__esModule", { value: true }), mod);

// src/Symbolic.class.ts
var Symbolic_class_exports = {};
__export(Symbolic_class_exports, {
  Symbolic: () => Symbolic
});
module.exports = __toCommonJS(Symbolic_class_exports);
var import_any_base = __toESM(require("any-base"));
var import_lodash2 = __toESM(require("lodash"));

// src/Snowflake.class.ts
var import_lodash = __toESM(require("lodash"));

// src/defaults/SnowflakeOptions.default.ts
var SnowflakeOptionsDefault = {
  epoch: "2025-01-01T00:00:00.000Z",
  place_id: 0
};

// src/Snowflake.class.ts
var parts = {
  timestamp: 53,
  place_id: 4,
  sequence: 10
};
var calculateLimits = (parts2) => {
  const limits2 = {};
  const keys = Object.keys(parts2);
  for (const key of keys) limits2[key] = Math.pow(2, parts2[key]) - 1;
  return limits2;
};
var calculateShifts = (parts2) => {
  const shifts2 = {};
  let shift = 0;
  const keys = ["sequence", "place_id", "timestamp"];
  for (const key of keys) {
    shifts2[key] = shift;
    shift += parts2[key];
  }
  return shifts2;
};
var limits = calculateLimits(parts);
var shifts = calculateShifts(parts);
var Snowflake = class {
  constructor(options = SnowflakeOptionsDefault) {
    this.options = import_lodash.default.merge({}, SnowflakeOptionsDefault, options);
    this.epoch = this.options.epoch instanceof Date ? this.options.epoch.getTime() : typeof this.options.epoch === "string" || typeof this.options.epoch === "number" ? new Date(this.options.epoch).getTime() : (/* @__PURE__ */ new Date("2025-01-01T00:00:00.000Z")).getTime();
    if ((this.options.place_id ?? 0) < 0 || (this.options.place_id ?? 0) > limits.place_id) throw new Error(`Field place_id must be between 0 and ${limits.place_id}`);
    this.options.place_id = (this.options.place_id ?? 0) & limits.place_id;
    this.sequence = 0;
    this.last_timestamp = -1;
  }
  currentTimestamp() {
    return Date.now() - this.epoch;
  }
  waitForNextTime(last_timestamp) {
    let timestamp = this.currentTimestamp();
    while (last_timestamp >= timestamp) timestamp = this.currentTimestamp();
    return timestamp;
  }
  generate() {
    let timestamp = this.currentTimestamp();
    if (timestamp < this.last_timestamp) throw new Error("Clock moved backwards.");
    if (timestamp === this.last_timestamp) {
      this.sequence = this.sequence + 1 & limits.sequence;
      if (this.sequence === 0) timestamp = this.waitForNextTime(this.last_timestamp);
    } else this.sequence = 0;
    this.last_timestamp = timestamp;
    return (BigInt(timestamp) << BigInt(shifts.timestamp) | BigInt(this.options.place_id ?? 0) << BigInt(shifts.place_id) | BigInt(this.sequence)).toString();
  }
  resolve(id) {
    const bigint_id = BigInt(id);
    return {
      created_at: new Date(this.epoch + Number(bigint_id >> BigInt(shifts.timestamp) & BigInt(limits.timestamp))).toISOString(),
      place_id: Number(bigint_id >> BigInt(shifts.place_id) & BigInt(limits.place_id)),
      sequence: Number(bigint_id & BigInt(limits.sequence))
    };
  }
};

// src/defaults/SymbolicOptions.default.ts
var SymbolicOptionsDefault = {
  epoch: "2025-01-01T00:00:00.000Z",
  place_id: 0,
  charset: "0123456789ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz"
};

// src/Symbolic.class.ts
var Symbolic = class {
  constructor(options = SymbolicOptionsDefault) {
    this.options = import_lodash2.default.merge({}, SymbolicOptionsDefault, options);
    this.epoch = this.options.epoch instanceof Date ? this.options.epoch.getTime() : typeof this.options.epoch === "string" || typeof this.options.epoch === "number" ? new Date(this.options.epoch).getTime() : (/* @__PURE__ */ new Date("2025-01-01T00:00:00.000Z")).getTime();
    this.Snowflake = new Snowflake({
      epoch: this.epoch,
      place_id: this.options.place_id ?? 0
    });
    this.encode = (0, import_any_base.default)(import_any_base.default.DEC, this.options.charset ?? "");
    this.decode = (0, import_any_base.default)(this.options.charset ?? "", import_any_base.default.DEC);
  }
  generate() {
    return this.encode(this.Snowflake.generate());
  }
  resolve(id) {
    return this.Snowflake.resolve(this.decode(id));
  }
};
// Annotate the CommonJS export names for ESM import in node:
0 && (module.exports = {
  Symbolic
});