build: migrate to esbuild

[merceyz]

Migrated from webpack to esbuild which allowed removing the various webpack workarounds in the codebase.

Addresses #227 (comment)

The bundle size is reduced a tiny bit:

$ du -s dist-*
2176    dist-esbuild
2192    dist-webpack

The bundle produced by esbuild is a bit slower, probably because it doesn't code split, but in my opinion it's acceptable:

$ hyperfine -w 1 \
  "node ./dist-esbuild/corepack.js -v" \
  "node ./dist-esbuild/yarn.js -v" \
  "node ./dist-esbuild/npm.js -v" \
  "node ./dist-esbuild/pnpm.js -v" \
  "node ./dist-webpack/corepack.js -v" \
  "node ./dist-webpack/yarn.js -v" \
  "node ./dist-webpack/npm.js -v" \
  "node ./dist-webpack/pnpm.js -v"
Benchmark 1: node ./dist-esbuild/corepack.js -v
  Time (mean ± σ):      61.1 ms ±   0.5 ms    [User: 55.8 ms, System: 6.9 ms]
  Range (min … max):    60.2 ms …  62.3 ms    49 runs

Benchmark 2: node ./dist-esbuild/yarn.js -v
  Time (mean ± σ):     226.7 ms ±   2.6 ms    [User: 237.0 ms, System: 25.6 ms]
  Range (min … max):   221.9 ms … 230.5 ms    13 runs

Benchmark 3: node ./dist-esbuild/npm.js -v
  Time (mean ± σ):     226.1 ms ±   1.4 ms    [User: 240.6 ms, System: 36.1 ms]
  Range (min … max):   223.3 ms … 227.7 ms    13 runs

Benchmark 4: node ./dist-esbuild/pnpm.js -v
  Time (mean ± σ):     102.8 ms ±   1.2 ms    [User: 89.5 ms, System: 16.1 ms]
  Range (min … max):   101.5 ms … 108.0 ms    29 runs

Benchmark 5: node ./dist-webpack/corepack.js -v
  Time (mean ± σ):      47.1 ms ±   0.6 ms    [User: 41.1 ms, System: 7.0 ms]
  Range (min … max):    46.2 ms …  49.6 ms    63 runs

Benchmark 6: node ./dist-webpack/yarn.js -v
  Time (mean ± σ):     210.8 ms ±   1.0 ms    [User: 223.8 ms, System: 20.5 ms]
  Range (min … max):   209.4 ms … 212.4 ms    14 runs

Benchmark 7: node ./dist-webpack/npm.js -v
  Time (mean ± σ):     213.3 ms ±   1.9 ms    [User: 245.7 ms, System: 18.0 ms]
  Range (min … max):   210.4 ms … 216.7 ms    14 runs

Benchmark 8: node ./dist-webpack/pnpm.js -v
  Time (mean ± σ):      90.6 ms ±   1.3 ms    [User: 76.0 ms, System: 16.5 ms]
  Range (min … max):    88.9 ms …  96.4 ms    33 runs

Summary
  'node ./dist-webpack/corepack.js -v' ran
    1.30 ± 0.02 times faster than 'node ./dist-esbuild/corepack.js -v'
    1.92 ± 0.04 times faster than 'node ./dist-webpack/pnpm.js -v'
    2.18 ± 0.04 times faster than 'node ./dist-esbuild/pnpm.js -v'
    4.47 ± 0.06 times faster than 'node ./dist-webpack/yarn.js -v'
    4.53 ± 0.07 times faster than 'node ./dist-webpack/npm.js -v'
    4.80 ± 0.07 times faster than 'node ./dist-esbuild/npm.js -v'
    4.81 ± 0.08 times faster than 'node ./dist-esbuild/yarn.js -v'

And as a bonus the build time is reduced quite a bit:

$ hyperfine "yarn webpack"
Benchmark 1: yarn webpack
  Time (mean ± σ):      4.832 s ±  0.055 s    [User: 0.003 s, System: 0.003 s]
  Range (min … max):    4.770 s …  4.960 s    10 runs

$ hyperfine "yarn build:bundle"
Benchmark 1: yarn build:bundle
  Time (mean ± σ):     826.1 ms ±  21.6 ms    [User: 0.0 ms, System: 2.6 ms]
  Range (min … max):   804.6 ms … 873.8 ms    10 runs

[styfle]

Confirmed, the published size is a bit smaller 👍

• 0.15.3:
• 0.16.0: