check-npm-versions

Allows "peer" npm dependencies in Meteor 1.3 Atmosphere packages.

Use this package if you are writing an Atmosphere package that depends on a given Npm package is installed at the app level of projects you are installed in.

For example, if you are depending on a Npm-distributed React component, you don't want to Npm.depends() on the Npm package in your Atmosphere package, as this will mean a second copy of React will be shipped client-side as a sub-dependency of your package. Instead, you can do:

1import { checkNpmVersions } from 'meteor/tmeasday:check-npm-versions';
2checkNpmVersions({
3  'griddle-react': '0.3.x'
4});
5
6const Griddle = require('griddle-react');

This will prompt the user with an error message if they do not install griddle-react at a correct version directly in their application. In your install instructions, you'll still want to tell them to npm install --save griddle-react --- this will just tell them what's wrong if they do not.

Note that you must use require rather than import, unless you do the check in a separate file, as import is hoisted to the top of the file (and thus before the call to checkNpmVersions).