Resolves Node-style directories with index.js files in Rollup

Rollup by default doesn't handle resolving ./folder to ./folder/index.js internally. While there is the rollup-plugin-node-resolve plugin which also resolves directories as well as all dependencies from the node_modules directory, these may sometimes be too much for the use case at hand.

npm install --save-dev rollup-plugin-local-resolve

import { rollup } from 'rollup';
import localResolve from 'rollup-plugin-local-resolve';

// This will resolve `./files` to `./files/index.js` if the file exists
rollup({
  entry: './files',
  plugins: [localResolve()],
});

• Check for index.js file asynchronously
• Use absolute paths instead of relative ones to be consistent with how Rollup handles modules

MIT, see LICENSE for more information