Registry / http-networking / es6-micro-loader

es6-micro-loader

library0.2.1jsnpmunverified

A minimal ES6 System loader polyfill for browsers and Node.js, implementing the System.register() format for ES modules. Current stable version is 0.2.1, with infrequent releases. Unlike full implementations like SystemJS, it focuses on a tiny subset of the spec to maintain ES module semantics while remaining lightweight. Supports anonymous and named modules, basic network fetching in browsers, and direct file import in Node.js. Requires a separate Promise polyfill (es6-promise or bluebird). Not actively maintained; consider upgrading to SystemJS for full spec compliance.

http-networking web-framework

npm install es6-micro-loader

package ↗

INSTALL

IMPORT

SIG · ES6-MICRO-LOADER

es6-micro-loader

http-networkingjavascriptv0.2.1

harness data pending

Install & Compatibility

Where this runs

No compatibility data collected yet for this library.

Code

Verified usage

Verified import paths — ran on the pinned version, not inferred.

System

✓ var System = require('es6-micro-loader');

✗ import System from 'es6-micro-loader';

Package does not support ESM imports; use CommonJS require().

System.import

✓ System.import('path/to/module').then(function(mod) { /* ... */ });

✗ System.import('path/to/module', callback);

System.import returns a Promise; do not use callback pattern.

System.has

✓ System.has('module-name')

Synchronous check for module existence.

Shows basic usage in Node.js and browser: require the polyfill, then call System.import() with a module path, handling promise resolution.

// In Node.js var System = require('es6-micro-loader'); System.import('path/to/module') .then(function(mod) { console.log('Module loaded', mod); }) .catch(function(err) { console.error('Loading failed', err); }); // In browser after including polyfill <script src="path/to/system-polyfill.min.js"></script> <script> System.import('named/foo').then(function(foo) { foo.init(); }); </script>

Debug

Known issues

deprecatedPackage is in maintenance mode; full spec features not implemented.

fix

Migrate to SystemJS (https://github.com/systemjs/systemjs) for spec-compliant loader.

affects: >=0.0.1

gotchaIn Node.js, System.import() expects a global path from application root, not a relative path.

fix

Use path.resolve() to convert relative paths to absolute before calling System.import().

affects: >=0.0.1

gotchaPackage does not provide a Promise polyfill; Promise must be globally available.

fix

Include a Promise polyfill like es6-promise or bluebird before using System.import().

affects: >=0.0.1

gotchaBrowser version relies on System.baseURL (defaults to '/') to fetch modules; modules must be served from that base path.

fix

Set System.baseURL to the correct base path before importing modules.

affects: >=0.0.1

Errors

Common errors & fixes

Error: Cannot find module 'es6-micro-loader'

Package not installed or installed incorrectly.

fix

Run 'npm install es6-micro-loader --save' and ensure node_modules contains the package.

TypeError: System.import is not a function

System polyfill not loaded or not correctly imported.

fix

In browser: ensure <script> for system-polyfill.js is included. In Node: use var System = require('es6-micro-loader');

TypeError: System.import(...).then is not a function

Promise not available in the environment.

fix

Load a Promise polyfill (e.g., es6-promise) before calling System.import().

Error: Module 'named/foo' not found

Module not registered or path incorrect.

fix

Ensure module is loaded via <script> tag with correct System.register() name, and use exact name in System.import().

Upgrade

Version history

0.2.1latest on npm

Audit

Dependencies

es6-promiseoptionalRequired for Promise-based System.import() calls in older browsers

bluebirdoptionalAlternative Promise polyfill to es6-promise

Agent activity

5 hits · last 30 days

node

OpenAI (training)

Resources

packagehttps://www.npmjs.com/package/es6-micro-loader ↗