feat: adding sourcemap support

[mwinche]

[mwinche]

This should close https://github.com/deepsweet/isparta-loader/issues/1

[tennisgent]

👍

[tchock]

Thank you very much man! Unfortunately the source map fix doesn't work for me. When starting the unit test I get:

Module build failed: TypeError: Cannot read property 'sections' of undefined
    at new SourceMapConsumer (<projectPath>/node_modules/source-map/lib/source-map-consumer.js:20:19)
    at Object.module.exports (<projectPath>/node_modules/isparta-loader/index.js:34:29)

The map from the exported function is undefined.

In the webpack config I use:

config.devtool = 'inline-source-map';

and initialize with:

config.module = {
    preLoaders: [{
      test: /\.js$/,
      exclude: /node_modules/,
      loader: 'babel',
    }, {
      test: /\.js$/,
      include: [path.resolve(__dirname, '../../src')],
      loader: 'isparta',
    }],
    loaders: [],
  };

Is there something more to configure?

[mwinche]

I'll take a look, there shouldn't be much config. I just applied what I've seen other loaders do to support source maps and tested it for me locally.

[gurghet]

+1