esm-resolve

An ESM import resolver for Node written in pure JS. This is written to be part of an ESM dev server or build process, as Node's import process is impossible to introspect. It's also more permissive towards error cases and the default behavior of TypeScript (and therefore VSCode).

Usage

Install and import "esm-resolve" via your favourite package manager. Create a resolver based on the importing file.

import buildResolver from 'esm-resolve';

const r = buildResolver('./path/to/js/file.js');

r('./relative');             // e.g., './relative.js'
r('foo-test-package-name');  // e.g., './node_modules/foo-test-package-name/index.js'

Resolution logic is actually the same for any files in the same directory, so resolver objects can be reused (and they have a small bit of cache).

Options

You can set options via the second argument.