build: speed up build times

Use `esbuild-loader` to reduce build times. This is currently not
documented on Docusaurus' official docs.

With this change my build times went from 117s to 82s (30% faster).

- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -

Ref: facebook/docusaurus#4765

docusaurus.config.js

@@ -164,4 +164,14 @@ module.exports = {
  },
  ],
  ],
+ webpack: {
+ jsLoader: (isServer) => ({
+ loader: require.resolve('esbuild-loader'),
+ options: {
+ loader: 'tsx',
+ format: isServer ? 'cjs' : undefined,
+ target: isServer ? 'node12' : 'es2017',
+ },
+ }),
+ },
 };

package.json

@@ -53,6 +53,7 @@
  "@types/jest": "^26.0.23",
  "@types/unist": "^2.0.3",
  "del": "^6.0.0",
+ "esbuild-loader": "^2.15.1",
  "fs-extra": "^9.1.0",
  "globby": "^11.0.3",
  "got": "^11.8.2",

yarn.lock

@@ -4587,6 +4587,24 @@ es-to-primitive@^1.2.1:
  is-date-object "^1.0.1"
  is-symbol "^1.0.2"
 
+esbuild-loader@^2.15.1:
+ version "2.15.1"
+ resolved "https://registry.yarnpkg.com/esbuild-loader/-/esbuild-loader-2.15.1.tgz#5a3940f5d20317f1a35720efa33e933f97c923e9"
+ integrity sha512-JRBL6uTeWplMbylNBt9gxLKMjD8wKnqGq786QV/cm/nPBSNA9/kC7/vNwCXTDPfYqHoWsjyfH7ub9ekN0kdAYQ==
+ dependencies:
+ esbuild "^0.12.21"
+ joycon "^3.0.1"
+ json5 "^2.2.0"
+ loader-utils "^2.0.0"
+ tapable "^2.2.0"
+ type-fest "^1.4.0"
+ webpack-sources "^2.2.0"
+
+esbuild@^0.12.21:
+ version "0.12.29"
+ resolved "https://registry.yarnpkg.com/esbuild/-/esbuild-0.12.29.tgz#be602db7c4dc78944a9dbde0d1ea19d36c1f882d"
+ integrity sha512-w/XuoBCSwepyiZtIRsKsetiLDUVGPVw1E/R3VTFSecIy8UR7Cq3SOtwKHJMFoVqqVG36aGkzh4e8BvpO1Fdc7g==
+
 escalade@^3.0.2, escalade@^3.1.1:
  version "3.1.1"
  resolved "https://registry.yarnpkg.com/escalade/-/escalade-3.1.1.tgz#d8cfdc7000965c5a0174b4a82eaa5c0552742e40"
@@ -6815,6 +6833,11 @@ joi@^17.3.0, joi@^17.4.0:
  "@sideway/formula" "^3.0.0"
  "@sideway/pinpoint" "^2.0.0"
 
+joycon@^3.0.1:
+ version "3.0.1"
+ resolved "https://registry.yarnpkg.com/joycon/-/joycon-3.0.1.tgz#9074c9b08ccf37a6726ff74a18485f85efcaddaf"
+ integrity sha512-SJcJNBg32dGgxhPtM0wQqxqV0ax9k/9TaUskGDSJkSFSQOEWWvQ3zzWdGQRIUry2j1zA5+ReH13t0Mf3StuVZA==
+
 "js-tokens@^3.0.0 || ^4.0.0", js-tokens@^4.0.0:
  version "4.0.0"
  resolved "https://registry.yarnpkg.com/js-tokens/-/js-tokens-4.0.0.tgz#19203fb59991df98e3a287050d4647cdeaf32499"
@@ -10354,6 +10377,11 @@ type-fest@^0.8.1:
  resolved "https://registry.yarnpkg.com/type-fest/-/type-fest-0.8.1.tgz#09e249ebde851d3b1e48d27c105444667f17b83d"
  integrity sha512-4dbzIzqvjtgiM5rw1k5rEHtBANKmdudhGyBEajN01fEyhaAIhsoKNy6y7+IN93IfpFtwY9iqi7kD+xwKhQsNJA==
 
+type-fest@^1.4.0:
+ version "1.4.0"
+ resolved "https://registry.yarnpkg.com/type-fest/-/type-fest-1.4.0.tgz#e9fb813fe3bf1744ec359d55d1affefa76f14be1"
+ integrity sha512-yGSza74xk0UG8k+pLh5oeoYirvIiWo5t0/o3zHHAO2tRDiZcxWP7fywNlXhqb6/r6sWvwi+RsyQMWhVLe4BVuA==
+
 type-is@~1.6.17, type-is@~1.6.18:
  version "1.6.18"
  resolved "https://registry.yarnpkg.com/type-is/-/type-is-1.6.18.tgz#4e552cd05df09467dcbc4ef739de89f2cf37c131"
@@ -10899,6 +10927,14 @@ webpack-sources@^1.1.0, webpack-sources@^1.4.3:
  source-list-map "^2.0.0"
  source-map "~0.6.1"
 
+webpack-sources@^2.2.0:
+ version "2.3.1"
+ resolved "https://registry.yarnpkg.com/webpack-sources/-/webpack-sources-2.3.1.tgz#570de0af163949fe272233c2cefe1b56f74511fd"
+ integrity sha512-y9EI9AO42JjEcrTJFOYmVywVZdKVUfOvDUPsJea5GIr1JOEGFVqwlY2K098fFoIjOkDzHn2AjRvM8dsBZu+gCA==
+ dependencies:
+ source-list-map "^2.0.1"
+ source-map "^0.6.1"
+
 webpack-sources@^2.3.0:
  version "2.3.0"
  resolved "https://registry.yarnpkg.com/webpack-sources/-/webpack-sources-2.3.0.tgz#9ed2de69b25143a4c18847586ad9eccb19278cfa"