Building Scripts

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Instructions for configuring javascript build outputs.

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js_bundles key is used to configure build settings for javascript bundles.

It allows you to specify:

1. name of each generated script file
2. what to included in each script
3. how many scripts will be generated by build command

By default js_bundles looks for .js files in source directory and generates a single script.js as output.

Configuration options

js_bundles value is an array of objects, where each object specifies the following keys:

Key	Value
name	Output filename without file extension
src	Glob pattern for specifying which files to include in the bundle
mode (optional)	webpack build mode; by default same as --env flag

Info

Internally JavaScript bundles are built using webpack where mode is determined by build --env flag. If you want to override this behavior and always use a specific webpack mode configuration, explicitly specify "mode" in the build configuration.

Specifying source files

For specifying value of src you can use any valid glob pattern:

• a string value for a single file, example: "src/index.js"
• array of files, example: ["src/index.js", "src/popup.js"]
• a path with wildcard, for example: "src/*.js"
• You may also use ! as a way to negate inclusion of file(s)

See "Explaining Globs" for detailed reference.

Example

Below is a sample build configuration that will generate two JavaScript files:

• First one contains exactly src/background.js
• Second one contains all .js files under directories scr/app/dir1 and scr/app/dir2

After running build command dist/ will contain background.js and app.js.

"xtbuild": {
    "js_bundles": [
      {
        "name": "background",
        "src": "./src/background.js"
      },
      {
        "name": "app",
        "src": [
            "./src/app/dir1/**/*.js",
            "./src/app/dir2/**/*.js"
         ]
      }
    ]
}