[new feature]: compile es5 dist

fix #1469

build/compiler.js

@@ -6,16 +6,21 @@ const insert = require('gulp-insert');
 const rename = require('gulp-rename');
 const postcss = require('gulp-postcss');
 
-const tsProject = ts.createProject(path.resolve(__dirname, '../tsconfig.json'));
+const tsConfig = path.resolve(__dirname, '../tsconfig.json');
 const isProduction = process.env.NODE_ENV === 'production';
 const src = path.join(__dirname, '../packages');
-const dist = path.join(__dirname, isProduction ? '../dist' : '../example/dist');
+const libDir = path.resolve(__dirname, '../lib');
+const esDir = path.resolve(__dirname, '../dist');
+const exampleDir = path.resolve(__dirname, '../example/dist');
 
-function copy(ext) {
-  return gulp.src(`${src}/**/*.${ext}`).pipe(gulp.dest(dist));
-}
+const libConfig = {
+  target: 'es5',
+  lib: ['es2015', 'es2017', 'dom'],
+  module: 'commonjs',
+  declaration: false
+};
 
-function compileLess() {
+const compileLess = dist => () =>
   gulp
     .src(`${src}/**/*.less`)
     .pipe(less())
@@ -34,26 +39,36 @@ function compileLess() {
       })
     )
     .pipe(gulp.dest(dist));
-}
 
-function compileTs() {
-  tsProject
+const compileTs = (dist, config) => () => {
+  const tsProject = ts.createProject(tsConfig, config);
+  return tsProject
     .src()
     .pipe(tsProject())
     .on('error', () => {})
     .pipe(gulp.dest(dist));
+};
+
+const copy = (dist, ext) => () =>
+  gulp.src(`${src}/**/*.${ext}`).pipe(gulp.dest(dist));
+
+const compile = (dist, config) =>
+  gulp.parallel(
+    compileTs(dist, config),
+    compileLess(dist),
+    copy(dist, 'wxml'),
+    copy(dist, 'wxs'),
+    copy(dist, 'json')
+  );
+
+if (isProduction) {
+  gulp.series(compile(esDir), compile(libDir, libConfig))();
+} else {
+  compile(exampleDir)();
+
+  gulp.watch(`${src}/**/*.ts`, compileTs(exampleDir));
+  gulp.watch(`${src}/**/*.less`, compileLess(exampleDir));
+  gulp.watch(`${src}/**/*.wxml`, copy(exampleDir, 'wxml'));
+  gulp.watch(`${src}/**/*.wxs`, copy(exampleDir, 'wxs'));
+  gulp.watch(`${src}/**/*.json`, copy(exampleDir, 'json'));
 }
-
-const compileWxml = () => copy('wxml');
-const compileJson = () => copy('json');
-const compileWxs = () => copy('wxs');
-
-if (!isProduction) {
-  gulp.watch(`${src}/**/*.ts`, compileTs);
-  gulp.watch(`${src}/**/*.less`, compileLess);
-  gulp.watch(`${src}/**/*.wxml`, compileWxml);
-  gulp.watch(`${src}/**/*.wxs`, compileWxs);
-  gulp.watch(`${src}/**/*.json`, compileJson);
-}
-
-gulp.parallel(compileTs, compileLess, compileWxml, compileJson, compileWxs)();

package.json

@@ -9,12 +9,13 @@
     "dev": "node build/dev.js",
     "lint": "eslint ./packages --ext .js",
     "release": "sh build/release.sh",
-    "build:lib": "yarn && rm -rf dist && NODE_ENV=production node build/compiler.js",
+    "build:lib": "yarn && rm -rf dist && rm -rf lib && NODE_ENV=production node build/compiler.js",
     "build:site": "rm -rf docs/dist && cross-env NODE_ENV=production webpack --config build/webpack.doc.prd.js && gh-pages -d docs/dist",
     "build:changelog": "vant-doc changelog --tag v0.5.0 changelog.generated.md"
   },
   "files": [
-    "dist"
+    "dist",
+    "lib"
   ],
   "repository": {
     "type": "git",