Docnumbering

docnumbering is a flexible and customizable identity generation library. It allows you to define a sequence of rules to generate structured IDs dynamically.

Features

• Static values, input-based, datetime, and incrementing ID components.
• Customizable ID structure using predefined rule types.
• Supports different formats such as year-based numbering.
• Memory-based storage for ID tracking.

Installation

npm install docnumbering

Usage

import { factory, MemoryStore, Rule, RuleFormat, RuleType } from "docnumbering";

const rules: Rule[] = [
  { type: RuleType.STATIC, value: "IT" },
  { type: RuleType.STATIC, value: "-" },
  { type: RuleType.INPUT },
  { type: RuleType.STATIC, value: "-" },
  { type: RuleType.DATETIME, format: RuleFormat.YEAR_4 },
  { type: RuleType.STATIC, value: "-" },
  { type: RuleType.INCREMENT, format: RuleFormat.BASE_10, fixedLength: 3 },
];

const store = new MemoryStore();
const idgen = factory(rules, store, { now: new Date("2025") });

async function generateId() {
  console.log(await idgen.nextId(["LAPTOP"])); // IT-LAPTOP-2025-001
}

generateId();

Example Patterns

• IT-LAPTOP-2025-001: A structured ID with category, year, and incrementing number.
• IT-ANDROID-2024-002: Uses dynamic input for category.
• IT-BAG-2023-005: Automatically increments for each new ID.

Demo

Try out the ID generator at: numbering.easytag.id