@nano-faker/patterns

Pattern-based fake data generation for nano-faker

Installation

pnpm add @nano-faker/core @nano-faker/patterns

Usage

import { setSeed } from '@nano-faker/core';
import { fake } from '@nano-faker/patterns';

setSeed(12345);

fake("USR-####-@@");    // "USR-4728-ab"
fake("###-##-####");    // "472-83-9102" (SSN-like)
fake("***-***-***");    // "a7X-9Bz-K4m"
fake("Order-#####");    // "Order-47382"

Placeholders

| Placeholder | Description | Example | |------------|-------------|---------| | # | Random digit (0-9) | 5 | | @ | Random lowercase letter (a-z) | m | | * | Random alphanumeric | K | | \ | Escape character | \# → # |

Examples

User IDs

fake("USR-####-@@@@");  // "USR-4728-abcd"

License Keys

fake("****-****-****-****");  // "a7X9-BzK4-mP2q-R8vN"

SSN-like Patterns

fake("###-##-####");  // "472-83-9102"

Escaped Characters

fake("\\#\\#\\#");  // "###" (literal)
fake("ID-\\#-####");  // "ID-#-4728"

API

fake(pattern: string): string

Generate fake data based on a pattern string.

Parameters:

• pattern - Pattern string with placeholders

Returns: Generated string matching the pattern

Example:

fake("USR-####-@@");  // "USR-4728-ab"

License

MIT