Snowflake ID Generator

A simple and customizable Snowflake ID generator for JavaScript and TypeScript projects, now with an additional random ID generation feature.

Installation

npm install @grkndev/snowflakeid

Usage

JavaScript

const { generateSnowflakeId, parseSnowflakeId, randomId } = require('@grkndev/snowflakeid');

// Generate a Snowflake ID with default options
const id = generateSnowflakeId();
console.log(id);
//=> '79796401721711616'

// Generate a Snowflake ID with custom options
const customId = generateSnowflakeId({ nodeId: 5, epoch: 1609459200000 });
console.log(customId);

// Parse a Snowflake ID
const parsedId = parseSnowflakeId(id);
console.log(parsedId);

// Generate a random ID
const randomID = randomId();
console.log(randomID);
//=> '283946'

// Generate a random ID with custom options
const customRandomID = randomId(8, { useChars: true, useNumbers: true });
console.log(customRandomID);
//=> 'a3Bf9x2Z'

TypeScript

import { generateSnowflakeId, parseSnowflakeId, SnowflakeOptions, randomId, RandomIdOptions } from '@grkndev/snowflakeid';

// Generate a Snowflake ID with default options
const id = generateSnowflakeId();
console.log(id);

// Generate a Snowflake ID with custom options
const options: SnowflakeOptions = { nodeId: 5, epoch: 1609459200000 };
const customId = generateSnowflakeId(options);
console.log(customId);

// Parse a Snowflake ID
const parsedId = parseSnowflakeId(id);
console.log(parsedId);

// Generate a random ID with default options
const randomID = randomId();
console.log(randomID);

// Generate a random ID with custom options
const randomOptions: RandomIdOptions = { useChars: true, useNumbers: true };
const customRandomID = randomId(8, randomOptions);
console.log(customRandomID);

API

generateSnowflakeId(options?: SnowflakeOptions): string

Generates a Snowflake ID.

Options:

• epoch (optional): Custom epoch timestamp (in milliseconds since Unix epoch). Default is 1609459200000 (2021-01-01T00:00:00Z).
• nodeId (optional): Node ID for distributed systems (0-1023). Default is 1.
• sequence (optional): Initial sequence number (0-4095).

Returns a string representation of the generated Snowflake ID.

parseSnowflakeId(id: string, epoch?: number): { timestamp: Date, nodeId: number, sequence: number }

Parses a Snowflake ID into its component parts.

Parameters:

• id: The Snowflake ID to parse.
• epoch (optional): The epoch used in ID generation. Default is 1609459200000 (2021-01-01T00:00:00Z).

Returns an object containing the parsed components of the Snowflake ID:

• timestamp: Date object representing the timestamp of ID generation.
• nodeId: The node ID used in ID generation.
• sequence: The sequence number used in ID generation.

randomId(length?: number, options?: RandomIdOptions): string

Generates a random ID.

Parameters:

• length (optional): The length of the ID to generate. Default is 6.
• options (optional): An object with the following properties:
  • useChars (optional): Whether to use alphabetic characters. Default is false.
  • useNumbers (optional): Whether to use numeric characters. Default is true.

Returns a string representation of the generated random ID.

Error Handling

The generateSnowflakeId function may throw errors in the following cases:

• If the provided nodeId is less than 0 or greater than 1023.
• If the provided epoch is a negative number or a future timestamp.
• If the system clock moves backwards.

The randomId function may throw an error if neither useChars nor useNumbers is set to true in the options.

License

MIT