How to import a function as a variable in all modules?

Question

typescript

When Webpack builds Typescript modules, it pushes Typescript's __extends helper into each module.
It turns out a lot of repeating helpers in each module.
I'm trying to take out this helper now as a separate f-ii, cut off the generation of helpers through noEmitHelpers.

function __extends(d, b) {
    for (var p in b) if (b.hasOwnProperty(p)) d[p] = b[p];
    function __() { this.constructor = d; }
    d.prototype = b === null ? Object.create(b) : (__.prototype = b.prototype, new __());
}

Now about the problem: how to properly import this helper into all modules as a variable using webpack? I would very much like this variable not to be global. I would also very much like not to use any plugins, tk. gulp-webpack doesn't support them.

Answer 1

extends.ts:

declare let module: any;

function __extends(d, b) {
    for (var p in b) if (b.hasOwnProperty(p)) d[p] = b[p];
    function __() { this.constructor = d; }
    d.prototype = b === null ? Object.create(b) : (__.prototype = b.prototype, new __());
}

module.exports = __extends;

In the webpack config:

resolve: {
               modulesDirectories: ['node_modules', '.']
           },.
plugins: [
               new webpack.ProvidePlugin({
                   __extends: 'src/ts/ts-helpers/extends' //src/ts/ts-helpers/extens.ts
               })
           ]