perf: replace source-map package with @jridgewell/trace-mapping

[onigoetz]

This PR contains a:

• bugfix
• new feature
• code refactor
• test update
• typo fix
• metadata update

Motivation / Use-Case

The trace-mapping module is faster than source-map in every benchmark
https://github.com/jridgewell/trace-mapping#benchmarks

It's also being adopted by many packages across the ecosystem (Jest, Babel, Terser at least have included it already)
And it doesn't need to be async like source-map 0.7.*

A previous PR to upgrade for source-map 0.7 was refused in the past : #280

Breaking Changes

None

Additional Info

[alexander-akait]

@onigoetz I think we need to change it in more places, we don't think it will improve somthing, because we use source maps here only for error reporting

[codecov]

Codecov Report

Merging #489 (0e2ce1b) into master (66fdec8) will not change coverage.
The diff coverage is 60.00%.

@@           Coverage Diff           @@
##           master     #489   +/-   ##
=======================================
  Coverage   97.11%   97.11%           
=======================================
  Files           3        3           
  Lines         312      312           
  Branches      114      114           
=======================================
  Hits          303      303           
  Misses          9        9           

Impacted Files	Coverage Δ
src/utils.js	95.00% <ø> (ø)
src/index.js	97.34% <60.00%> (ø)

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[onigoetz]

I understand that in this library's case it won't impact performance nor package size greatly

However there seems to be a big interest to move away from source-map and source-map-js towards these packages and I think that every package adopting this newer alternative is a move towards deprecating an unmaintained package and at some point remove it from our dependency trees entirely

[alexander-akait]

@onigoetz I agree, let's migrate, I think we should do the same in css-minimizer-webpack-plugin and maybe somewhere else? 🤔

[alexander-akait]

Thanks

[onigoetz]

I personally did a yarn why source-map on my main project and am trying to create PRs here and there :)

[alexander-akait]

Feel free to send PRs in other repos 👍