chore: add package.json individual build commands

Author: ssi02014

package.json

@@ -7,7 +7,11 @@
     "commit-amend-build": "scripts/commit-amend-build.sh",
     "prebuild": "rimraf dist/**",
     "dev": "cross-env NODE_ENV=development BABEL_ENV=rollup rollup -w -c -o dist/purify.js",
-    "build": "rollup -c",
+    "build": "cross-env NODE_ENV=production rollup -c",
+    "build:umd": "rollup -c -f umd -o dist/purify.js",
+    "build:umd:min": "rollup -c -f umd -o dist/purify.min.js -p terser",
+    "build:es": "rollup -c -f es -o dist/purify.es.js",
+    "build:cjs": "rollup -c -f cjs -o dist/purify.cjs.js",
     "test:jsdom": "cross-env NODE_ENV=test BABEL_ENV=rollup node test/jsdom-node-runner --dot",
     "test:karma": "cross-env NODE_ENV=test BABEL_ENV=rollup karma start test/karma.conf.js --log-level warn ",
     "test:ci": "cross-env NODE_ENV=test BABEL_ENV=rollup npm run test:jsdom && npm run test:karma -- --log-level error --reporters dots --single-run --shouldTestOnBrowserStack=\"${TEST_BROWSERSTACK}\" --shouldProbeOnly=\"${TEST_PROBE_ONLY}\"",

rollup.config.js

@@ -6,6 +6,7 @@ const { terser } = require('rollup-plugin-terser');
 const pkg = require('./package.json');
 
 const env = process.env.NODE_ENV;
+const isProd = env === 'production';
 const version = process.env.npm_package_version;
 const license = fs
   .readFileSync('./src/license_header', 'utf8')
@@ -31,7 +32,7 @@ const config = {
       ...commonOutputConfig,
       file: pkg.production,
       format: 'umd',
-      plugins: [terser()],
+      plugins: isProd ? [terser()] : [],
     },
     {
       ...commonOutputConfig,