feat: a few startup time optimizations

Author: egoist

.gitignore

@@ -7,3 +7,4 @@
 /dist
 /types
 /docs/api
+require-trace.trace

package.json

@@ -39,7 +39,6 @@
     "@babel/preset-typescript": "^7.1.0",
     "babel-plugin-transform-async-to-promises": "^0.8.4",
     "chalk": "^2.4.2",
-    "gzip-size": "^5.0.0",
     "ora": "^3.0.0",
     "rollup": "^1.1.2",
     "rollup-plugin-babel": "^4.3.2",
@@ -86,9 +85,11 @@
     "lodash": "^4.17.11",
     "nswatch": "^0.2.0",
     "p-waterfall": "^1.0.0",
+    "gzip-size": "^5.0.0",
     "prettier": "^1.15.2",
     "pretty-bytes": "^5.1.0",
     "require-from-string": "^2.0.2",
+    "require-so-slow": "^1.2.0",
     "resolve": "^1.10.0",
     "resolve-from": "^4.0.0",
     "rollup-plugin-typescript2": "^0.19.2",
@@ -100,7 +101,8 @@
     "tinydate": "^1.0.1",
     "ts-jest": "^23.10.5",
     "typedoc": "^0.14.2",
-    "typescript": "^3.2.4"
+    "typescript": "^3.2.4",
+    "v8-compile-cache": "^2.0.2"
   },
   "husky": {
     "hooks": {

src/cli.ts

@@ -1,7 +1,15 @@
 #!/usr/bin/env node
+import 'v8-compile-cache'
 import cac from 'cac'
 import { version } from '../package.json'
 
+if (process.env.BILI_LOCAL_PROFILE) {
+  const requireSoSlow = require('require-so-slow')
+  process.on('exit', () => {
+    requireSoSlow.write('require-trace.trace')
+  })
+}
+
 const cli = cac('bili')
 
 cli

src/config-loader.ts

@@ -1,7 +1,6 @@
 import path from 'path'
 import fs from 'fs'
 import JoyCon from 'joycon'
-import * as babel from '@babel/core'
 import requireFromString from 'require-from-string'
 
 const configLoader = new JoyCon({
@@ -11,22 +10,25 @@ const configLoader = new JoyCon({
 configLoader.addLoader({
   test: /\.[jt]s$/,
   loadSync(id) {
-    const content = babel.transform(fs.readFileSync(id, 'utf8'), {
-      babelrc: false,
-      configFile: false,
-      filename: id,
-      presets: [
-        [
-          require('@babel/preset-env'),
-          {
-            targets: {
-              node: 'current'
+    const content = require('@babel/core').transform(
+      fs.readFileSync(id, 'utf8'),
+      {
+        babelrc: false,
+        configFile: false,
+        filename: id,
+        presets: [
+          [
+            require('@babel/preset-env'),
+            {
+              targets: {
+                node: 'current'
+              }
             }
-          }
-        ],
-        id.endsWith('.ts') && require('@babel/preset-typescript')
-      ].filter(Boolean)
-    })
+          ],
+          id.endsWith('.ts') && require('@babel/preset-typescript')
+        ].filter(Boolean)
+      }
+    )
     const m = requireFromString(content && content.code ? content.code : '', id)
     return m.default || m
   }

src/index.ts

@@ -2,7 +2,6 @@ import path from 'path'
 import colors from 'chalk'
 import prettyBytes from 'pretty-bytes'
 import textTable from 'text-table'
-import gzipSize from 'gzip-size'
 import resolveFrom from 'resolve-from'
 import boxen from 'boxen'
 import stringWidth from 'string-width'
@@ -609,6 +608,7 @@ interface Asset {
 type Assets = Map<string, Asset>
 
 async function printAssets(assets: Assets) {
+  const gzipSize = await import('gzip-size').then(res => res.default)
   const table = await Promise.all(
     [...assets.keys()].map(async relative => {
       const asset = assets.get(relative) as Asset

yarn.lock

@@ -5569,6 +5569,21 @@ meow@^4.0.0:
     redent "^2.0.0"
     trim-newlines "^2.0.0"
 
+meow@^5.0.0:
+  version "5.0.0"
+  resolved "https://registry.npmjs.org/meow/-/meow-5.0.0.tgz#dfc73d63a9afc714a5e371760eb5c88b91078aa4"
+  integrity sha512-CbTqYU17ABaLefO8vCU153ZZlprKYWDljcndKKDCFcYQITzWCXZAVk4QMFZPgvzrnUQ3uItnIE/LoUOwrT15Ig==
+  dependencies:
+    camelcase-keys "^4.0.0"
+    decamelize-keys "^1.0.0"
+    loud-rejection "^1.0.0"
+    minimist-options "^3.0.1"
+    normalize-package-data "^2.3.4"
+    read-pkg-up "^3.0.0"
+    redent "^2.0.0"
+    trim-newlines "^2.0.0"
+    yargs-parser "^10.0.0"
+
 merge-stream@^1.0.1:
   version "1.0.1"
   resolved "https://registry.npmjs.org/merge-stream/-/merge-stream-1.0.1.tgz#4041202d508a342ba00174008df0c251b8c135e1"
@@ -7628,6 +7643,16 @@ require-main-filename@^1.0.1:
   resolved "https://registry.npmjs.org/require-main-filename/-/require-main-filename-1.0.1.tgz#97f717b69d48784f5f526a6c5aa8ffdda055a4d1"
   integrity sha1-l/cXtp1IeE9fUmpsWqj/3aBVpNE=
 
+require-so-slow@^1.2.0:
+  version "1.2.0"
+  resolved "https://registry.npmjs.org/require-so-slow/-/require-so-slow-1.2.0.tgz#174fbcf1d94ffe7058b2ffdfe5aa7b05ef370ae3"
+  integrity sha512-5snoIjflBaDjWmQC/7ZKRH59+PUV43jHv0CanX0x9TCp2ifPUpGjjEg8X+x5pR7T8zKkHn8bsFQuP6n10El+nA==
+  dependencies:
+    meow "^5.0.0"
+    npm-package-arg "^6.1.0"
+    tmp "0.0.33"
+    update-notifier "^2.5.0"
+
 reserved-words@^0.1.2:
   version "0.1.2"
   resolved "https://registry.npmjs.org/reserved-words/-/reserved-words-0.1.2.tgz#00a0940f98cd501aeaaac316411d9adc52b31ab1"
@@ -8660,7 +8685,7 @@ tinydate@^1.0.1:
   resolved "https://registry.npmjs.org/tinydate/-/tinydate-1.0.1.tgz#5e38797e2e3e79ce2300543f586c6caa2dfcf668"
   integrity sha512-Imqa6iv3Ig5FmC3ESwmqczusIn1h8D5RqNbpatGc1eLHeoytuhodbsAPpSJ8iKiLhxBtLuRsrywWHlJM1bA3Rg==
 
-tmp@^0.0.33:
+tmp@0.0.33, tmp@^0.0.33:
   version "0.0.33"
   resolved "https://registry.npmjs.org/tmp/-/tmp-0.0.33.tgz#6d34335889768d21b2bcda0aa277ced3b1bfadf9"
   integrity sha512-jRCJlojKnZ3addtTOjdIqoRuPEKBvNXcGYqzO6zWZX8KfKEpnGY5jfggJQ3EjKuu8D4bJRr0y+cYJFmYbImXGw==
@@ -9026,6 +9051,11 @@ uuid@^3.3.2:
   resolved "https://registry.npmjs.org/uuid/-/uuid-3.3.2.tgz#1b4af4955eb3077c501c23872fc6513811587131"
   integrity sha512-yXJmeNaw3DnnKAOKJE51sL/ZaYfWJRl1pK9dr19YFCu0ObS231AB1/LbqTKRAQ5kw8A90rA6fr4riOUpTZvQZA==
 
+v8-compile-cache@^2.0.2:
+  version "2.0.2"
+  resolved "https://registry.npmjs.org/v8-compile-cache/-/v8-compile-cache-2.0.2.tgz#a428b28bb26790734c4fc8bc9fa106fccebf6a6c"
+  integrity sha512-1wFuMUIM16MDJRCrpbpuEPTUGmM5QMUg0cr3KFwra2XgOgFcPGDQHDh3CszSCD2Zewc/dh/pamNEW8CbfDebUw==
+
 validate-npm-package-license@^3.0.1, validate-npm-package-license@^3.0.4:
   version "3.0.4"
   resolved "https://registry.npmjs.org/validate-npm-package-license/-/validate-npm-package-license-3.0.4.tgz#fc91f6b9c7ba15c857f4cb2c5defeec39d4f410a"
@@ -9256,7 +9286,7 @@ yallist@^3.0.0, yallist@^3.0.2:
   resolved "https://registry.npmjs.org/yallist/-/yallist-3.0.3.tgz#b4b049e314be545e3ce802236d6cd22cd91c3de9"
   integrity sha512-S+Zk8DEWE6oKpV+vI3qWkaK+jSbIK86pCwe2IF/xwIpQ8jEuxpw9NyaGjmp9+BoJv5FV2piqCDcoCtStppiq2A==
 
-[email protected]:
+[email protected], yargs-parser@^10.0.0:
   version "10.1.0"
   resolved "https://registry.npmjs.org/yargs-parser/-/yargs-parser-10.1.0.tgz#7202265b89f7e9e9f2e5765e0fe735a905edbaa8"
   integrity sha512-VCIyR1wJoEBZUqk5PA+oOBF6ypbwh5aNB3I50guxAL/quggdfs4TtNHQrSazFA3fYZ+tEqfs0zIGlv0c/rgjbQ==