Introduction

dependency-walk allows you to traverse the dependency graph of a module.

Installation

npm install dependency-walk

Usage

To use the walk function, you must first import it from the dependency-walk module:

import { walk } from 'dependency-walk';

Next, define the options object with the following properties:

• entry: the path to the entry module
• parser: (optional) a custom parser function for the module code
• transformer: (optional) a custom transformer function for the module info
• filter: (optional) a custom filter function to exclude certain modules from parse
• onModule: (optional) a callback function to be called for each module
• afterModule: (optional) a callback function to be called after processing each module

Finally, call the walk function with the options object as its argument:

const entryModule = walk({
  entry: '/path/to/entry/module.js',
  parser: customParserFunction,
  transformer: customTransformerFunction,
  filter: customFilterFunction,
  onModule: (moduleInfo) => console.log(moduleInfo.filePath),
  afterModule: (moduleInfo) => console.log('Finished processing', moduleInfo.filePath),
});

The walk function returns the entry module as a Module object.

Module Object

The Module object has the following properties:

interface Module {
  code: string;
  filePath: string;
  fileName: string;
  isEntry: boolean;
  dependencies: Module[];
}

Custom parser function

The parser is a function that takes a Module object and a moduleProcessor as a parameter and output the detected dependency's path to moduleProcessor.

If the parser is not set when calling the walk function, a default parser that can detect CommonJS Module will be used.