![]() ![]() Now we'll parse the Source Map using the source-map library. The readFileSync function reads the file and returns its content. Yeah, if you want to search within content sources which are scripts used by extensions and the internal browser API, you enable it in the Settings of DevTools and then from any panel in DevTools you can type Ctrl + Shift + F or (on Mac) Options + Command + F (F) to search across all sources, snippets, and files. Online JavaScript Minifier Tool and Compressor, with Fast and Simple API Access. path_to_your_sourcemap.map' with the path to your Source Map file. Use our JavaScript Minifier & Compressor tool to reduce JavaScript code size and make your website load faster. ![]() Let's read our Source Map file using the fs library: const fs = require('fs') Ĭonst rawSourceMap = fs.readFileSync('./path_to_your_sourcemap.map') Step 2: Read the Source Map File Image created by the author & Adobe Firefly The source-map library will allow us to parse the Source Map, while the fs library, a native Node.js package, will help us read the file.Ĭreate a new Node.js project and install source-map via npm by running the following command in your terminal: npm install source-map We'll need two libraries to parse our source map: source-map and fs. Let's see how we can leverage the concept of Source Maps, just like browsers do, to recover the original code from the minified version. Image created by the author, representing how obfuscated & minified source code looks like They map the minified code back to the original code, making it much easier to find the exact location of any bugs or issues. This is where Source Maps come to our aid. This process, however, makes the code nearly unreadable, making it challenging to debug. JavaScript is often minified or transpiled to make the code more efficient for production use. ![]() In essence, a Source Map is a map that ties a transformed version of your code back to the original version, which is highly beneficial when debugging. Source Maps are a crucial component in modern web development, providing a bridge between minified/uglified production code and the original source code. We will parse them back into their original code forms using Node.js, along with a couple of useful npm libraries.īut before we dive into the coding world, let's take a moment to understand what a Source Map is and why it is used. Welcome, tech enthusiasts! In today's blog post, We'll be embarking on a fascinating exploration of JavaScript Source Maps. ![]()
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