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@rollup/plugin-virtual

🍣 A Rollup plugin which loads virtual modules from memory.

Requirements

This plugin requires an LTS Node version (v14.0.0+) and Rollup v1.20.0+.

Install

Using npm:

``console npm install @rollup/plugin-virtual --save-dev`

`Usage`

_Note. Use this plugin before any others such as node-resolve or commonjs, so they do not alter the output._

Suppose an entry file containing the snippet below exists at src/entry.js, and attempts to load batman and src/robin.js from memory:

`js // src/entry.js import batman from 'batman'; import robin from './robin.js';

console.log(batman, robin);`

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

`js import virtual from '@rollup/plugin-virtual';

export default { input: 'src/entry.js', // ... plugins: [ virtual({ batman:export default 'na na na na na', 'src/robin.js':export default 'batmannnnn'}) ] };`

Then call rollup either via the CLI or the API.

`Options`

This plugin has no formal options. The lone parameter for this plugin is an Object containing properties that correspond to a String containing the virtual module's code.

`Using the Plugin for Bundle Input`

It's possible to use the plugin to specify an entry point for a bundle. To do so, implement a pattern simple to what is shown below:

`js import virtual from '@rollup/plugin-virtual';

export default { input: 'entry', // ... plugins: [ virtual({ entry:
import batman from 'batcave';
console.log(batman);
}) ] };``

License

MIT

Usage

_Note. Use this plugin before any others such as node-resolve or commonjs, so they do not alter the output._

Suppose an entry file containing the snippet below exists at src/entry.js, and attempts to load batman and src/robin.js from memory:

js
// src/entry.js
import batman from 'batman';
import robin from './robin.js';

console.log(batman, robin);

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

js
import virtual from '@rollup/plugin-virtual';

export default {
  input: 'src/entry.js',
  // ...
  plugins: [
    virtual({
      batman:

export default 'na na na na na'

,
      'src/robin.js':

export default 'batmannnnn'


    })
  ]
};

Then call rollup either via the CLI or the API.

Using the Plugin for Bundle Input

It's possible to use the plugin to specify an entry point for a bundle. To do so, implement a pattern simple to what is shown below:

js
import virtual from '@rollup/plugin-virtual';

export default {
  input: 'entry',
  // ...
  plugins: [
    virtual({
      entry:

import batman from 'batcave';
console.log(batman);


    })
  ]
};