build: use terser instead of uglify

package.json

@@ -138,7 +138,7 @@
     "serialize-javascript": "^1.3.0",
     "shelljs": "^0.8.1",
     "typescript": "^3.1.3",
-    "uglify-js": "^3.0.15",
+    "terser": "^3.10.2",
     "webpack": "^4.22.0",
     "weex-js-runtime": "^0.23.6",
     "weex-styler": "^0.3.0",

scripts/build.js

@@ -2,7 +2,7 @@ const fs = require('fs')
 const path = require('path')
 const zlib = require('zlib')
 const rollup = require('rollup')
-const uglify = require('uglify-js')
+const terser = require('terser')
 
 if (!fs.existsSync('dist')) {
   fs.mkdirSync('dist')
@@ -48,7 +48,7 @@ function buildEntry (config) {
     .then(bundle => bundle.generate(output))
     .then(({ code }) => {
       if (isProd) {
-        var minified = (banner ? banner + '\n' : '') + uglify.minify(code, {
+        var minified = (banner ? banner + '\n' : '') + terser.minify(code, {
           output: {
             ascii_only: true
           },

yarn.lock

@@ -7562,7 +7562,7 @@ source-map-resolve@^0.5.0, source-map-resolve@^0.5.2:
     source-map-url "^0.4.0"
     urix "^0.1.0"
 
-source-map-support@^0.5.9:
+source-map-support@^0.5.9, source-map-support@~0.5.6:
   version "0.5.9"
   resolved "https://registry.yarnpkg.com/source-map-support/-/source-map-support-0.5.9.tgz#41bc953b2534267ea2d605bccfa7bfa3111ced5f"
   integrity sha512-gR6Rw4MvUlYy83vP0vxoVNzM6t8MUXqNuRsuBmBHQDu1Fh6X015FrLdgoDKcNdkwGubozq0P4N0Q37UyFVr1EA==
@@ -7914,6 +7914,15 @@ tar@^4:
     safe-buffer "^5.1.2"
     yallist "^3.0.2"
 
+terser@^3.10.2:
+  version "3.10.2"
+  resolved "https://registry.yarnpkg.com/terser/-/terser-3.10.2.tgz#a61d2c97065f9fdc8c49a18655e2a80ca7298a94"
+  integrity sha512-+QrFoqBImmsQGB4c/HvaqgZynmbNvNBwoBxuu7fYXtq5EEtlLUzph+WimDj+xMkuqawXPMl2lgCIz81CdXvt+w==
+  dependencies:
+    commander "~2.17.1"
+    source-map "~0.6.1"
+    source-map-support "~0.5.6"
+
 test-exclude@^5.0.0:
   version "5.0.0"
   resolved "https://registry.yarnpkg.com/test-exclude/-/test-exclude-5.0.0.tgz#cdce7cece785e0e829cd5c2b27baf18bc583cfb7"
@@ -8123,7 +8132,7 @@ uglify-es@^3.3.4:
     commander "~2.13.0"
     source-map "~0.6.1"
 
-uglify-js@^3.0.15, uglify-js@^3.1.4:
+uglify-js@^3.1.4:
   version "3.4.9"
   resolved "https://registry.yarnpkg.com/uglify-js/-/uglify-js-3.4.9.tgz#af02f180c1207d76432e473ed24a28f4a782bae3"
   integrity sha512-8CJsbKOtEbnJsTyv6LE6m6ZKniqMiFWmm9sRbopbkGs3gMPPfd3Fh8iIA4Ykv5MgaTbqHr4BaoGLJLZNhsrW1Q==