How do I minify node js code?

fs. readFile(myFile, function (err, data) { processTheFile(data); }); Here, the gap between calling readFile and the callback being fired will be several times longer than the length of time the callback takes. (If it’s the other way round, you probably shouldn’t be using node.)

Should you minify libraries?

Minification and bundling If your package consists of a single bundle instead of a bunch of separate modules, minification is always a safe bet. Since a bundler will never try anything funny with a single module/entity (like tree-shaking), it’s likely your code will technically not change at all by any build process.

What is the difference between minify and uglify?

There is no real distinction between the two. Even Uglify calls itself a minification toolkit. It doesn’t make sense to both minify and uglify because most minifiers will both remove whitespace and unnecessary characters, as well as obfuscate the code.

How do I customize my NPM library?

Modifying npm packages – the right way

1. To begin, clone the repo of the source of the package you would like to modify or fork it first and then clone the fork.
2. Installing the package dependencies should be done by using the ‘npm install’ command issued in the same directory as the package.

How do I run minify?

To minify CSS, try CSSNano and csso. To minify JavaScript, try UglifyJS. The Closure Compiler is also very effective. You can create a build process that uses these tools to minify and rename the development files and save them to a production directory.

What is node prune?

node-prune is a small tool to prune unnecessary files from ./node_modules, such as markdown, typescript source files, and so on. Primarily built for Up which lets you deploy serverless web applications in seconds.

How do I compress JavaScript?

Javascript code can be compressed in one or more of the following ways:

1. By removing white spaces and indentation.
2. By shortening variable names to single characters.
3. By removing new line characters.
4. By joining closely placed variable declarations.
5. By trying to turn arrays to objects wherever it is possible.

How does Uglify work?

Uglify is a JavaScript file minifier. It compresses the file size by removing all the spaces and new lines- which makes the code unreadable able hence ugly. Uglify also joins sentences using comma, changes property access to dot notation (to reduce number of characters), removes dead code and removes console logs.

What is Uglify for?

uglify. / (ˈʌɡlɪˌfaɪ) / verb -fies, -fying or -fied. to make or become ugly or more ugly.

How do I unlink a node module?

You can “undo” the effects of npm link by simply removing the symbolic links. But there is a built in command for it, aptly called: npm unlink . Just run npm unlink –no-save > on your project’s directory to remove the local symlink, and run npm unlink on the module’s directory to remove the global symlink.

Can I change node modules?

4 Answers. You can edit the file directly, but this would be overwritten whenever npm updates, the best thing to do is go straight to the source.