Export global function using webpack

Question

I'm trying to write an isomorphic module. The server javascript is going to run inside of JINT. I have created a webpack bundle specifically to build the server version of the module. I want to expose a single function that I can get JINT to call. I am using the scriptEngine.Invoke function from JINT however this is looking for a function on the global object. I don't know how to get a function onto the global object. I have tried using the expose-loader but this seems to export the entire module and I can't get it to just expose a single function.

Here is my entry point:

require("expose?FormValidator!./formValidator.js");

Here is my formValidator.js:

export default function validate () {
    return 'HelloWorld';
}

When I load up the resulting bundle and examine the FormValidator global it is an object with a validate function. Is there a way I can get the validate function to be directly assigned to FormValidator?

Answer 1

I am in the same situation as you do.Here is my code:

webpack.config.js:

module.exports = {
    entry: './src/method/eTrack/index.js',
    output: {
        filename: 'eTrack.js',
        path: path.resolve(__dirname, 'dist'),
        library: 'eTrack',
        libraryTarget: 'umd'
    },
};

./src/method/eTrack/index.js：

import create from './create';
import getAll from './getAll';
import getByName from './getByName';
import remove from './remove';

export function eTrack () {

}
eTrack.trackers = [];
eTrack.create = create;
eTrack.getAll = getAll;
eTrack.getByName = getByName;
eTrack.remove = remove;

Well, after bundled via webpack, I can access eTrack in window but it turn out to be an object.That means I can't call eTrack() directly, but should call like eTrack.eTrack().

And I've tried @Ambroos's solution, change ./src/method/eTrack/index.js into：

module.exports = function eTrack () {

}

This time after bundled, I can't access eTrack in browser window, the eTrack object gone and it throws eTrack is undefined error in the console.

Then I found an article that helps a lot:http://siawyoung.com/coding/javascript/exporting-es6-modules-as-single-scripts-with-webpack.html

And change my index.js into:

function eTrack () {

}
module.exports = eTrack;

Then everything works as expected!I can call eTrack() directly in <script> tag.Though I don't know the difference between @Ambroos's answer and this solution.