Fix broken UTC plugin due to rollup (#1453)

build/index.js

@@ -35,23 +35,27 @@ async function listLocaleJson(localeArr) {
 
 (async () => {
   try {
+    /* eslint-disable no-restricted-syntax, no-await-in-loop */
+    // We use await-in-loop to make rollup run sequentially to save on RAM
     const locales = await promisifyReadDir(localePath)
-    locales.forEach((l) => {
-      build(configFactory({
+    for (const l of locales) {
+      // run builds sequentially to limit RAM usage
+      await build(configFactory({
         input: `./src/locale/${l}`,
         fileName: `./locale/${l}`,
         name: `dayjs_locale_${formatName(l)}`
       }))
-    })
+    }
 
     const plugins = await promisifyReadDir(path.join(__dirname, '../src/plugin'))
-    plugins.forEach((l) => {
-      build(configFactory({
-        input: `./src/plugin/${l}/index`,
-        fileName: `./plugin/${l}.js`,
-        name: `dayjs_plugin_${formatName(l)}`
+    for (const plugin of plugins) {
+      // run builds sequentially to limit RAM usage
+      await build(configFactory({
+        input: `./src/plugin/${plugin}/index`,
+        fileName: `./plugin/${plugin}.js`,
+        name: `dayjs_plugin_${formatName(plugin)}`
       }))
-    })
+    }
 
     build(configFactory({
       input: './src/index.js',

build/rollup.config.js

@@ -1,5 +1,5 @@
 const babel = require('rollup-plugin-babel')
-const uglify = require('rollup-plugin-uglify')
+const { terser } = require('rollup-plugin-terser')
 
 module.exports = (config) => {
   const { input, fileName, name } = config
@@ -13,7 +13,7 @@ module.exports = (config) => {
         babel({
           exclude: 'node_modules/**'
         }),
-        uglify()
+        terser()
       ]
     },
     output: {
@@ -22,7 +22,8 @@ module.exports = (config) => {
       name: name || 'dayjs',
       globals: {
         dayjs: 'dayjs'
-      }
+      },
+      compact: true
     }
   }
 }

package.json

@@ -90,11 +90,10 @@
     "ncp": "^2.0.0",
     "pre-commit": "^1.2.2",
     "prettier": "^1.16.1",
-    "rollup": "^0.57.1",
-    "rollup-plugin-babel": "^4.0.0-beta.4",
-    "rollup-plugin-uglify": "^3.0.0",
+    "rollup": "^2.45.1",
+    "rollup-plugin-babel": "^4.4.0",
+    "rollup-plugin-terser": "^7.0.2",
     "size-limit": "^0.18.0",
     "typescript": "^2.8.3"
-  },
-  "dependencies": {}
+  }
 }

src/constant.js

@@ -28,3 +28,7 @@ export const INVALID_DATE_STRING = 'Invalid Date'
 // regex
 export const REGEX_PARSE = /^(\d{4})[-/]?(\d{1,2})?[-/]?(\d{0,2})[^0-9]*(\d{1,2})?:?(\d{1,2})?:?(\d{1,2})?[.:]?(\d+)?$/
 export const REGEX_FORMAT = /\[([^\]]+)]|Y{1,4}|M{1,4}|D{1,2}|d{1,4}|H{1,2}|h{1,2}|a|A|m{1,2}|s{1,2}|Z{1,2}|SSS/g
+
+// used by plugins/utc
+export const REGEX_VALID_OFFSET_FORMAT = /[+-]\d\d(?::?\d\d)?/g
+export const REGEX_OFFSET_HOURS_MINUTES_FORMAT = /([+-]|\d\d)/g

src/plugin/utc/index.js

@@ -1,7 +1,4 @@
-import { MILLISECONDS_A_MINUTE, MIN } from '../../constant'
-
-export const REGEX_VALID_OFFSET_FORMAT = /[+-]\d\d(?::?\d\d)?/g
-export const REGEX_OFFSET_HOURS_MINUTES_FORMAT = /([+-]|\d\d)/g
+import { MILLISECONDS_A_MINUTE, MIN, REGEX_VALID_OFFSET_FORMAT, REGEX_OFFSET_HOURS_MINUTES_FORMAT } from '../../constant'
 
 function offsetFromString(value = '') {
   const offset = value.match(REGEX_VALID_OFFSET_FORMAT)