Question 1

How to add a source map when concatenating files with grunt-contrib-concat?

Accepted Answer

Enable the `sourceMap` option in your Grunt configuration and set `sourceMapStyle` to embed, link, or inline. This generates a .map file alongside your output, useful for debugging minified code.

Question 2

grunt-contrib-concat vs gulp-concat: which is better for my build process?

Accepted Answer

Use grunt-contrib-concat if you're committed to Grunt's configuration-driven approach. Gulp-concat is preferable for Gulp's streaming model and more modern, code-based task definitions, offering better performance and flexibility.

Question 3

How to strip banner comments from JavaScript files before concatenation?

Accepted Answer

Set the `stripBanners` option to true or an object with `block` and `line` properties. This removes comments like /* ... */ but preserves /*! ... */ ones, as explained in the README.

Question 4

Can grunt-contrib-concat minify code?

Accepted Answer

No, it only concatenates files. For minification, you need to chain it with other Grunt plugins like grunt-contrib-uglify, adding complexity to your build pipeline.

Question 5

How to process files with custom logic during concatenation?

Accepted Answer

Use the `process` option as a function that takes `src` and `filepath` arguments. For example, you can modify source code or add metadata, as shown in the custom process function example.

Question 6

Setting up multiple concatenation tasks in one Gruntfile?

Accepted Answer

Define multiple targets under the concat task, each with its own `src` and `dest`. Running `grunt concat` builds all targets, leveraging Grunt's multi-task system for efficiency.

Grunt-contrib-concat

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