Add sourcemaps back to original TS

[blink1073]

When debugging in JupyterLab (with the UMD bundles introduced in #40), I am seeing the ES6 bundle, we should be able to reach back to the original TS source files:

[telamonian]

I've researched this and the related issues extensively. This will require two things:

• include the ts sources in the released @lumino packages. Can be done in one of two ways:

  1. add "inlineSources": true to the tsconfig.json of each package
  2. (my pick) include the src dir with the actual .ts sources in the release of each package

• tweak the jlab webpack build to include the sourcemaps produced by tsc for the @lumino packages

  • change this line to something like

    include: [...sourceMapRes, '@lumino'],
    

[blink1073]

I agree with adding src back to the release.

[GordonSmith]

"src" is already included in the packages (I didn't think it got removed?): https://github.com/jupyterlab/lumino/blob/master/packages/widgets/package.json#L23
https://cdn.jsdelivr.net/npm/@lumino/widgets/

Unless I missed some by mistake?

[GordonSmith]

Also if you look in the map files you should see that the bundled versions map back to the ts files in question: https://cdn.jsdelivr.net/npm/@lumino/widgets@1.13.2/dist/index.js.map

[blink1073]

I don't see src in node_modules:

$ ls node_modules/@lumino/coreutils/
.            ..           LICENSE      lib          package.json

[GordonSmith]

Its there in the released package: https://cdn.jsdelivr.net/npm/@lumino/coreutils@1.5.2/package.json

[GordonSmith]

...and: https://cdn.jsdelivr.net/npm/@lumino/coreutils@1.5.2/src/

[blink1073]

Looks good yeah, my other folder had 1.4.2.

[GordonSmith]

If your using WebPack to build your project and your including JS files which in turn already have a source map associated with them (like from TS) then you should be using source-map-loader.

Example here: https://github.com/GordonSmith/HPCC-Platform/blob/eclwatch-8.x/esp/src/webpack.config.js#L95-L99

[GordonSmith]

You might need to change the "devTool" for non production builds as well: https://github.com/GordonSmith/HPCC-Platform/blob/eclwatch-8.x/esp/src/webpack.config.js#L111 (not 100% sure)