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readme.md

metalsmith-concat

travis github npm

This plugin enables you to concatenate files together.

Install

npm install metalsmith-concat

Usage

CLI

metalsmith.json

{
  "plugins": {
    "metalsmith-concat": {
      "files": "styles/**/*.css",
      "output": "styles/app.css"
    }
  }
}

Node.js

const metalsmith = require('metalsmith')
const metalsmithConcat = require('metalsmith-concat')

metalsmith(__dirname).use(
  metalsmithConcat({
    files: 'styles/**/*.css',
    output: 'styles/app.css',
  })
)

API

metalsmithConcat(options)

options

Type: Object Default: {}

options.files

Type: string | string[] Default: ['**/*']

This defines which files are concatenated. This string will be interpreted as a minimatch pattern. An array of strings will be interpreted as distinct minimatch patterns, in this case the order of the patterns matters (it will determine the order in which the files are concatenated).

Note: during the search, these patterns will be evaluated relativetly to both the source path and the search paths (if any).

options.output

Type: string

It represents the filepath where the concatenated content will be outputted. This option is mandatory.

Note: this is relative to the destination path.

options.forceOutput

Type: boolean Default: false

By default metalsmith-concat returns an error if the output file already exists. When that happens, you can force the existing output file to be overwritten by setting this option to true.

options.insertNewLine

Type: boolean | string Default: true

Whether a trailing new line (\n) should be appended after each concatenated file. Unless you face a problem, you should keep this option enabled as removing it could cause invalid concatenated files (see this article). It is also possible to pass a string, in which case it will be used instead of \n (e.g., \r\n).

options.keepConcatenated

Type: boolean Default: false

Whether to keep the files which were concatenated. By default they are not kept and deleted from the build (thus only keeping the newly created file at options.output).

options.searchPaths

Type: string | string[] Default: []

Specify additional paths to search. The paths are resolved relatively to Metalsmith's root directory. Absolute paths are also supported. An ignore pattern is applied on the results to make sure the src directory is not matched twice from a custom search path.

FAQ

I am developing a React application and want to include react.min.js before index.js so I can use React in my code. What should I do?

Let's consider you have the following source code:

src/
  index.js
node_modules/
  react/
    dist/
      react.min.js

The easiest way to achieve what you want with this plugin is to simply match react.min.js before index.js in the files array, this priority will be respected by the plugin. Do not forget to add the node_modules search path though, as this directory is not searched by default.

{
  files: [
    'react/dist/react.min.js', // found in node_modules
    'index.js' // found in src
  ],
  searchPaths: ['node_modules'],
}
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