Extensible Rollup configuration

[jaredpalmer]

Closes #110

You can now extend the rollup config via tsdx.config.js.

Now you can do this....

// tsdx.config.js
const postcss = require('rollup-plugin-postcss');
const autoprefixer = require('autoprefixer');
const cssnano = require('cssnano');

module.exports = {
  rollup(config, options) {
    config.plugins.push(
      postcss({
        plugins: [
          autoprefixer(),
          cssnano({
            preset: 'default',
          }),
        ].filter(Boolean),
        // only write out CSS for the first bundle (avoids pointless extra files):
        inject: false,
        extract: options.writeMeta,
      })
    );
    return config;
  },
};

[swyxio]

got some time to check this out. so extractErrors changes from a string to boolean. i feel like i can argue pros and cons of that but you've probably thought this through (my guess is the string isn't all that reusable anyway so we dont really lose anything by dropping it to a boolean). either way i'll update some parts of the docs that fell out of date w this pr

[swyxio]

getting "Sourcemap is likely to be incorrect: a plugin was used to transform files, but didn't generate a sourcemap for the transformation. Consult the plugin documentation for help"

this issue comes from rollup and has been seen in rollup-plugin-babel but i'm not sure if its related to our tsdx babel plugin. tagging @Andarist in case they can take a look

[Andarist]

rollup-plugin-babel should generate source maps by default, unless you turn it off - https://github.com/rollup/rollup-plugin-babel/blob/4d8c0c570e35200c3456372494d1029a4e2a2a90/src/index.js#L20

[jaredpalmer]

Merge and release?

[swyxio]

yup im good w that

[designorant]

Could we consider extending rollup-plugin-typescript2 configuration in the same way babel one can be extended?

I've been looking into adding assents into my library via @svgr/rollup which led me to: ezolenko/rollup-plugin-typescript2#105

The fix seems to be to pass the objectHashIgnoreUnknownHack: true option to rpt but that isn't quite possible in tsdx unless I'm missing something.

[swyxio]

open separate issue with suggestion of what api you’d like to see please