Pattern Collector Line Extractor

A zero-dependency ES module to scan file contents and pull structured line details with capture variables using regular expressions.

Line Tracking Configurable Regex Zero Dependencies

Installation

Add the pattern collector to your Node.js project using npm or yarn:

npm install pattern-collector-anyjs-pull-lines

Or using yarn:

yarn add pattern-collector-anyjs-pull-lines

Quick Start

Import the default function and pass your code text along with your regex configurations:

import pullLines from 'pattern-collector-anyjs-pull-lines';

const results = pullLines({
  fileContent: sourceCode,
  importRegex: {
    parseRegex: /import\s*\{[^}]*router\s+as\s+(\w+)[^}]*\}\s*from\s*['"]\.\/([^/]+)\/.*['"]/,
    searchString: /^[ \t]*import\b.*from\s+['"]\.[^'"]*['"];/gm
  },
  consumptionRegex: {
    parseRegex: /router\.use\s*\(\s*['"`]\/?([^'"`]+)['"`]\s*,\s*(\w+)/,
    searchString: /^[ \t]*router\.use\b.*?;/gm
  }
});

API Reference

The library default exports a function taking a configuration object:

pullLines({ fileContent, importRegex, consumptionRegex, showLog, showLogStep1 })
Parameter Type Description
fileContent string The raw text / source code of the file to search.
importRegex Object Contains matching settings for imports:
• searchRegex / searchString (RegExp): Scans for the lines.
• parseRegex (RegExp): Extracts capturing variables (e.g. Variable, Folder).
consumptionRegex Object Contains matching settings for route consumptions:
• searchRegex / searchString (RegExp): Scans for usage lines.
• parseRegex (RegExp): Extracts capturing variables (e.g. Endpoint, Variable).
showLog boolean Optional. Enables verbose node-level console logging.

🎮 Live Interactive Playground

Input your source code and regular expressions below to test line extraction in real-time in the browser.

Import Lines 0 matches
Consumption Lines 0 matches