optimize bundle builds

packages/babel/scripts/build-dist.sh

@@ -3,24 +3,54 @@ set -e
 
 BROWSERIFY_CMD="../../node_modules/browserify/bin/cmd.js"
 UGLIFY_CMD="../../node_modules/uglify-js/bin/uglifyjs"
-BROWSERIFY_IGNORE="-i esprima-fb"
+BROWSERIFY_IGNORE="-i esprima-fb -i through"
+
+set -x
 
 mkdir -p dist
 
 node scripts/cache-templates
 
-node $BROWSERIFY_CMD -e lib/polyfill.js >dist/polyfill.js
-node $UGLIFY_CMD dist/polyfill.js >dist/polyfill.min.js
+node $BROWSERIFY_CMD lib/polyfill.js \
+  --insert-global-vars 'global' \
+  --plugin bundle-collapser/plugin \
+  --plugin derequire/plugin \
+  >dist/polyfill.js
+node $UGLIFY_CMD dist/polyfill.js \
+  --compress warnings=false \
+  --mangle \
+  >dist/polyfill.min.js
 
 # Add a Unicode BOM so browsers will interpret the file as UTF-8
 node -p '"\uFEFF"' > dist/browser.js
-node $BROWSERIFY_CMD lib/api/browser.js -s babel $BROWSERIFY_IGNORE >>dist/browser.js
+node $BROWSERIFY_CMD lib/api/browser.js \
+  --standalone babel \
+  --plugin bundle-collapser/plugin \
+  --plugin derequire/plugin \
+  $BROWSERIFY_IGNORE \
+  >>dist/browser.js
 node -p '"\uFEFF"' > dist/browser.min.js
-node $UGLIFY_CMD dist/browser.js >>dist/browser.min.js
+node $UGLIFY_CMD dist/browser.js \
+  --compress warnings=false \
+  --mangle \
+  >>dist/browser.min.js
 
-node $BROWSERIFY_CMD lib/api/node.js --node $BROWSERIFY_IGNORE >dist/node.js
+node $BROWSERIFY_CMD lib/api/node.js \
+  --standalone babel \
+  --node \
+  --plugin bundle-collapser/plugin \
+  --plugin derequire/plugin \
+  $BROWSERIFY_IGNORE \
+  >dist/node.js
+node $UGLIFY_CMD dist/node.js \
+  --compress warnings=false \
+  --mangle \
+  >dist/node.min.js
 
 node ../babel-cli/lib/babel-external-helpers >dist/external-helpers.js
-node $UGLIFY_CMD dist/external-helpers.js >dist/external-helpers.min.js
+node $UGLIFY_CMD dist/external-helpers.js \
+  --compress warnings=false \
+  --mangle \
+  >dist/external-helpers.min.js
 
 rm -rf templates.json