gem-hunter

🍣 A Rollup plugin to merge multiple JSON sources into one.

Using npm:

npm i rollup-plugin-json-merge --save-dev

Using yarn:

yarn add rollup-plugin-json-merge -D

Create a rollup.config.js configuration file and import the plugin:

import merge from 'rollup-plugin-json-merge';
import { name, version, description } from './package.json';

export default {
  input: 'src/index.js',
  output: {
    dir: 'output',
    format: 'cjs',
  },
  plugins: [
    merge({
      input: [{ name, version, description }, 'src/manifest.json', 'src/data/*.json'],
      fileName: 'manifest.json',
    }),
  ],
};

Then call rollup either via the CLI or the API.

The configuration above will collect JSON values from given input option and build the output file using Object.assign.

Type: (String | JSONValue) | Array[...(String | JSONValue)]
Default: []

Glob style string pattern or a JSON object or an array of a mix of those to construct a single output from.

Type: String
Default: output.json

Output filename for the merged JSON.

Type: Function
Default: (items) => Object.assign(...items)

The function responsible for merging given items.

MIT