Disable source maps for node_modules

[Timer]

Disabling source maps for node_modules is a good default because an error might've happened in the context of being compiled, thus debugging against the source actually being evaluated (barring minification) would be a lot easier.

This should also be faster.

[Timer]

Before:

✨  Done in 77.83s.
joes-mbp:website joe$ du -h build/
132K    build//static/css
 16M    build//static/js
228K    build//static/media
 16M    build//static
 16M    build/
joes-mbp:website joe$

---

After:

✨  Done in 67.07s.
joes-mbp:website joe$ du -h build/
132K    build//static/css
 16M    build//static/js
228K    build//static/media
 16M    build//static
 16M    build/
joes-mbp:website joe$

[marcofugaro]

How? The default value of sourceMaps is false.

https://babeljs.io/docs/en/next/options#sourcemaps

Babel-loader is saying instead that he ignores that option:

https://github.com/babel/babel-loader#options

[gaearon]

Despite what docs say, if you look at the source you’ll see it uses this option. Also note it’s sourceMaps, not sourceMap (which is ignored per docs).

[marcofugaro]

Huh weird, thanks man!