Install pre-bundled packages 2/N

Summary: A first simple version of pre-bundled plugin installation. Currently both pre-bundled and source-only plugins are supported. Pre-bundled plugins should have folder "dist" inside and package.json's "main" field should point to the entry point script there.

Reviewed By: passy

Differential Revision: D19834020

fbshipit-source-id: 7e0b495fb9666acbb22fc32ca2382339cd9dc72f

src/dispatcher/plugins.tsx

@@ -80,7 +80,7 @@ export default (store: Store, logger: Logger) => {
 };
 
 function getBundledPlugins(): Array<PluginDefinition> {
-  if (!isProduction()) {
+  if (!isProduction() || process.env.FLIPPER_NO_EMBEDDED_PLUGINS) {
     // Plugins are only bundled in production builds
     return [];
   }

src/utils/pluginManager.tsx

@@ -38,7 +38,7 @@ function providePluginManagerNoDependencies(): PM {
   return new PM({ignoredDependencies: [/.*/]});
 }
 
-async function installPlugin(pluginDir: string) {
+async function installPluginFromTempDir(pluginDir: string) {
   const packageJSONPath = path.join(pluginDir, 'package.json');
   const packageJSON = JSON.parse(
     (await fs.readFile(packageJSONPath)).toString(),
@@ -51,27 +51,25 @@ async function installPlugin(pluginDir: string) {
   const destinationDir = path.join(PLUGIN_DIR, name);
   // Clean up existing destination files.
   await fs.remove(destinationDir);
+  await fs.ensureDir(destinationDir);
 
+  const isPreBundled = await fs.pathExists(path.join(pluginDir, 'dist'));
+  if (!isPreBundled) {
     const pluginManager = providePluginManager();
     // install the plugin dependencies into node_modules
     const nodeModulesDir = path.join(destinationDir, 'node_modules');
     pluginManager.options.pluginsPath = nodeModulesDir;
-  const pluginInfo = await pluginManager.installFromPath(pluginDir);
-
-  const itselfDir = path.join(nodeModulesDir, name);
-
-  // copying plugin files into the destination folder
-  const pluginFiles = await fs.readdir(itselfDir);
-  await Promise.all(
-    pluginFiles.map(f =>
-      fs.move(path.join(itselfDir, f), path.join(destinationDir, f)),
-    ),
-  );
-
+    await pluginManager.installFromPath(pluginDir);
     // live-plugin-manager also installs plugin itself into the target dir, it's better remove it
-  await fs.remove(itselfDir);
-
-  return pluginInfo;
+    await fs.remove(path.join(nodeModulesDir, name));
+  }
+  // copying plugin files into the destination folder
+  const pluginFiles = await fs.readdir(pluginDir);
+  await Promise.all(
+    pluginFiles
+      .filter(f => f !== 'node_modules')
+      .map(f => fs.move(path.join(pluginDir, f), path.join(destinationDir, f))),
+  );
 }
 
 async function getPluginRootDir(dir: string) {
@@ -99,8 +97,8 @@ export async function installPluginFromNpm(name: string) {
     const plugManNoDep = providePluginManagerNoDependencies();
     plugManNoDep.options.pluginsPath = tmpDir;
     await plugManNoDep.install(name);
-    const pluginDir = path.join(tmpDir, name);
-    return await installPlugin(pluginDir);
+    const pluginTempDir = path.join(tmpDir, name);
+    await installPluginFromTempDir(pluginTempDir);
   } finally {
     if (await fs.pathExists(tmpDir)) {
       await fs.remove(tmpDir);
@@ -118,7 +116,7 @@ export async function installPluginFromFile(packagePath: string) {
       throw new Error('The package is not in tar.gz format or is empty');
     }
     const pluginDir = await getPluginRootDir(tmpDir);
-    return await installPlugin(pluginDir);
+    await installPluginFromTempDir(pluginDir);
   } finally {
     if (await fs.pathExists(tmpDir)) {
       await fs.remove(tmpDir);

static/compilePlugins.js

@@ -210,9 +210,17 @@ async function compilePlugin(
   pluginCache,
   options,
 ) {
+  const isPreBundled = fs.existsSync(path.join(rootDir, 'dist'));
+  const result = Object.assign({}, packageJSON, {rootDir, name, entry});
+  if (isPreBundled) {
+    // eslint-disable-next-line no-console
+    console.log(`🥫  Using pre-built version of ${name}...`);
+    result.out = path.resolve(rootDir, result.main);
+    return result;
+  }
   const fileName = `${name}@${packageJSON.version || '0.0.0'}.js`;
   const out = path.join(pluginCache, fileName);
-  const result = Object.assign({}, packageJSON, {rootDir, name, entry, out});
+  result.out = out;
   // check if plugin needs to be compiled
   const rootDirCtime = await mostRecentlyChanged(rootDir);
   if (