"flipper-pkg" option for creating production bundle

Summary:
Development bundle: NODE_ENV=development, disabled minification, enabled source maps.

Production bundle: NODE_ENV=production, enabled minification, disabled source maps.

Changelog: Added "--production" option for "flipper-pkg bundle" command to produce minified plugin packages without source maps.

Reviewed By: mweststrate

Differential Revision: D22158791

fbshipit-source-id: 0f9ac84ca39ac3fb86f0c0b0a3c1be866445a305

desktop/pkg-lib/src/runBuild.ts

@@ -59,8 +59,8 @@ export default async function runBuild(
   inputDirectory: string,
   entry: string,
   out: string,
+  dev: boolean,
 ) {
-  const dev = process.env.NODE_ENV !== 'production';
   const baseConfig = await Metro.loadConfig();
   const config = Object.assign({}, baseConfig, {
     reporter: {update: () => {}},
@@ -96,7 +96,7 @@ export default async function runBuild(
     dev,
     minify: !dev,
     resetCache: !dev,
-    sourceMap: true,
+    sourceMap: dev,
     entry,
     out,
   });

desktop/pkg/src/commands/bundle.ts

@@ -30,7 +30,16 @@ export default class Bundle extends Command {
   ];
 
   public static flags = {
-    watch: flags.boolean(),
+    watch: flags.boolean({
+      description:
+        'Watch for plugin source code and bundle it after every change.',
+      default: false,
+    }),
+    production: flags.boolean({
+      description:
+        'Force env.NODE_ENV=production, enable minification and disable producing source maps.',
+      default: false,
+    }),
   };
 
   public async run() {
@@ -50,11 +59,16 @@ export default class Bundle extends Command {
     const out = path.resolve(inputDirectory, plugin.main);
     await fs.ensureDir(path.dirname(out));
 
-    const success = await runBuildOnce(inputDirectory, plugin.source, out);
+    const success = await runBuildOnce(
+      inputDirectory,
+      plugin.source,
+      out,
+      !flags.production,
+    );
     if (!flags.watch) {
       process.exit(success ? 0 : 1);
     } else {
-      enterWatchMode(inputDirectory, plugin.source, out);
+      enterWatchMode(inputDirectory, plugin.source, out, !flags.production);
     }
   }
 }
@@ -63,9 +77,10 @@ async function runBuildOnce(
   inputDirectory: string,
   source: string,
   out: string,
+  dev: boolean,
 ) {
   try {
-    await runBuild(inputDirectory, source, out);
+    await runBuild(inputDirectory, source, out, dev);
     console.log('✅  Build succeeded');
     return true;
   } catch (e) {
@@ -75,7 +90,12 @@ async function runBuildOnce(
   }
 }
 
-function enterWatchMode(inputDirectory: string, source: string, out: string) {
+function enterWatchMode(
+  inputDirectory: string,
+  source: string,
+  out: string,
+  dev: boolean,
+) {
   console.log(`⏳  Waiting for changes...`);
   let isBuilding = false;
   let pendingChanges = false;
@@ -92,7 +112,7 @@ function enterWatchMode(inputDirectory: string, source: string, out: string) {
       isBuilding = true;
       while (pendingChanges) {
         pendingChanges = false;
-        await runBuildOnce(inputDirectory, source, out);
+        await runBuildOnce(inputDirectory, source, out, dev);
       }
       isBuilding = false;
       console.log(`⏳  Waiting for changes...`);

desktop/pkg/src/commands/pack.ts

@@ -36,6 +36,11 @@ export default class Pack extends Command {
       description:
         'Where to output the package, file or directory. Defaults to the current working directory.',
     }),
+    production: flags.boolean({
+      description:
+        'Force env.NODE_ENV=production, enable minification and disable producing source maps.',
+      default: false,
+    }),
   };
 
   public static args: args.IArg[] = [
@@ -117,7 +122,7 @@ export default class Pack extends Command {
 
     cli.action.start(`Compiling`);
     await ensureDir(path.dirname(out));
-    await runBuild(inputDirectory, plugin.source, out);
+    await runBuild(inputDirectory, plugin.source, out, parsedFlags.production);
     cli.action.stop();
 
     cli.action.start(`Packing to ${outputFile}`);

desktop/static/compilePlugins.ts

@@ -135,7 +135,7 @@ async function compilePlugin(
       // eslint-disable-line no-console
       console.log(`⚙️  Compiling ${name}...`);
       try {
-        await runBuild(dir, source, entry);
+        await runBuild(dir, source, entry, false);
       } catch (e) {
         if (failSilently) {
           console.error(