Meteor cannot find re-exported module

I am writing a Meteor application using ES6, and I have a number of sub-components that I want to keep as separate npm packages. I have a library called frog-utils, which is shared across all packages, and which contain common helper functions.

When I try to re-export a module in frog-utils, it works fine with plain node, but Meteor complains that:

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  • W20161114-10:12:17.483(1)? (STDERR) Error: Cannot find module './color_range'
    W20161114-10:12:17.484(1)? (STDERR)     at require (packages/modules-runtime.js:109:19)
    W20161114-10:12:17.484(1)? (STDERR)     at meteorInstall.node_modules.frog-utils.dist.index.js (packages/modules.js:17407:20)

    (Here’s an example from plain node, in the same directory)

    ~/s/F/frog (ac-collab) $ node
    > frogutils = require('frog-utils')
    { color_range: [Getter],
      uuid: [Function: uuid],
      currentDate: [Function: currentDate],
      booleanize: [Function: booleanize],
      shorten: [Function: shorten],
      compose: [Function: compose],
      composeReducers: [Function: composeReducers],
      notEmpty: [Function: notEmpty],
      identity: [Function: identity],
      getKey: [Function: getKey] }

    I’m writing in ES6, using Babel to create the output files which are exposed by the module, and the ES5 seems fine to me:

    var _color_range = require('./color_range');
    Object.defineProperty(exports, 'color_range', {
      enumerable: true,
      get: function get() {
        return _interopRequireDefault(_color_range).default;

    (Here’s the ES6 line I use)

    export {default as color_range} from './color_range'

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  • 2 Solutions collect form web for “Meteor cannot find re-exported module”

    Which version of node are you testing with? I bet you if you did meteor node and tried the same require('frog-utils') it wouldn’t work, because meteor currently uses node 4.5 (at least in 1.4.X).

    I’m afraid you won’t be able to use ES6 in your npm package without compiling it (also see However compiling is not very hard, you can look how I just solved a very similar problem in:

    The trick is to define a script that compiles the code using babel on install.

      "main": "dist/index.js",
      "scripts": {
        "compile": "babel --presets es2015 index.js -d dist/ && babel --presets es2015 lib -d dist/lib/",
        "preinstall": "npm run compile"

    This seems to have been solved in the latest Meteor release (, it suddenly began “just working”.