split build process

Summary: Moving a couple of build function from `build-release` to `build-utils` so they can be shared between the desktop build process and the headless build process.

Reviewed By: passy

Differential Revision: D13786575

fbshipit-source-id: df0a0da6d9a643e3e1c65470e1e96254e8966dd9

scripts/build-release.js

@@ -5,12 +5,15 @@
  * @format
  */
 const path = require('path');
-const tmp = require('tmp');
 const fs = require('fs-extra');
 const builder = require('electron-builder');
 const Platform = builder.Platform;
-const Metro = require('../static/node_modules/metro');
-const compilePlugins = require('../static/compilePlugins');
+const {
+  buildFolder,
+  compile,
+  die,
+  compileDefaultPlugins,
+} = require('./build-utils.js');
 
 function generateManifest(versionNumber) {
   const filePath = path.join(__dirname, '..', 'dist');
@@ -26,20 +29,6 @@ function generateManifest(versionNumber) {
   );
 }
 
-function buildFolder() {
-  // eslint-disable-next-line no-console
-  console.log('Creating build directory');
-  return new Promise((resolve, reject) => {
-    tmp.dir((err, buildFolder) => {
-      if (err) {
-        reject(err);
-      } else {
-        resolve(buildFolder);
-      }
-    });
-  }).catch(die);
-}
-
 function modifyPackageManifest(buildFolder) {
   // eslint-disable-next-line no-console
   console.log('Creating package.json manifest');
@@ -122,45 +111,6 @@ function buildDist(buildFolder) {
     .catch(die);
 }
 
-function die(err) {
-  console.error(err.stack);
-  process.exit(1);
-}
-
-function compile(buildFolder) {
-  // eslint-disable-next-line no-console
-  console.log(
-    'Building main bundle',
-    path.join(__dirname, '..', 'src', 'init.js'),
-  );
-  const projectRoots = path.join(__dirname, '..');
-  return Metro.runBuild(
-    {
-      reporter: {update: () => {}},
-      projectRoot: projectRoots,
-      watchFolders: [projectRoots],
-      serializer: {},
-      transformer: {
-        babelTransformerPath: path.join(
-          __dirname,
-          '..',
-          'static',
-          'transforms',
-          'index.js',
-        ),
-      },
-    },
-    {
-      dev: false,
-      minify: false,
-      resetCache: true,
-      sourceMap: true,
-      entry: path.join(__dirname, '..', 'src', 'init.js'),
-      out: path.join(buildFolder, 'bundle.js'),
-    },
-  ).catch(die);
-}
-
 function copyStaticFolder(buildFolder) {
   return new Promise((resolve, reject) => {
     fs.copy(
@@ -180,39 +130,13 @@ function copyStaticFolder(buildFolder) {
   }).catch(die);
 }
 
-function compileDefaultPlugins(buildFolder) {
-  const defaultPluginFolder = 'defaultPlugins';
-  const defaultPluginDir = path.join(buildFolder, defaultPluginFolder);
-  return compilePlugins(
-    null,
-    [
-      path.join(__dirname, '..', 'src', 'plugins'),
-      path.join(__dirname, '..', 'src', 'fb', 'plugins'),
-    ],
-    defaultPluginDir,
-    {force: true, failSilently: false},
-  )
-    .then(defaultPlugins =>
-      fs.writeFileSync(
-        path.join(defaultPluginDir, 'index.json'),
-        JSON.stringify(
-          defaultPlugins.map(plugin => ({
-            ...plugin,
-            out: path.join(defaultPluginFolder, path.parse(plugin.out).base),
-          })),
-        ),
-      ),
-    )
-    .catch(die);
-}
-
 (async () => {
   const dir = await buildFolder();
   // eslint-disable-next-line no-console
   console.log('Created build directory', dir);
   await copyStaticFolder(dir);
   await compileDefaultPlugins(dir);
-  await compile(dir);
+  await compile(dir, path.join(__dirname, '..', 'src', 'init.js'));
   const versionNumber = await modifyPackageManifest(dir);
   generateManifest(versionNumber);
   await buildDist(dir);

scripts/build-utils.js

@@ -0,0 +1,96 @@
+/**
+ * Copyright 2018-present Facebook.
+ * This source code is licensed under the MIT license found in the
+ * LICENSE file in the root directory of this source tree.
+ * @format
+ */
+
+const Metro = require('../static/node_modules/metro');
+const compilePlugins = require('../static/compilePlugins');
+const tmp = require('tmp');
+const path = require('path');
+const fs = require('fs-extra');
+
+function die(err) {
+  console.error(err.stack);
+  process.exit(1);
+}
+
+function compileDefaultPlugins(buildFolder) {
+  const defaultPluginFolder = 'defaultPlugins';
+  const defaultPluginDir = path.join(buildFolder, defaultPluginFolder);
+  return compilePlugins(
+    null,
+    [
+      path.join(__dirname, '..', 'src', 'plugins'),
+      path.join(__dirname, '..', 'src', 'fb', 'plugins'),
+    ],
+    defaultPluginDir,
+    {force: true, failSilently: false},
+  )
+    .then(defaultPlugins =>
+      fs.writeFileSync(
+        path.join(defaultPluginDir, 'index.json'),
+        JSON.stringify(
+          defaultPlugins.map(plugin => ({
+            ...plugin,
+            out: path.join(defaultPluginFolder, path.parse(plugin.out).base),
+          })),
+        ),
+      ),
+    )
+    .catch(die);
+}
+
+function compile(buildFolder, entry) {
+  // eslint-disable-next-line no-console
+  console.log('Building main bundle', entry);
+
+  const projectRoots = path.join(__dirname, '..');
+  return Metro.runBuild(
+    {
+      reporter: {update: () => {}},
+      projectRoot: projectRoots,
+      watchFolders: [projectRoots],
+      serializer: {},
+      transformer: {
+        babelTransformerPath: path.join(
+          __dirname,
+          '..',
+          'static',
+          'transforms',
+          'index.js',
+        ),
+      },
+    },
+    {
+      dev: false,
+      minify: false,
+      resetCache: true,
+      sourceMap: true,
+      entry,
+      out: path.join(buildFolder, 'bundle.js'),
+    },
+  ).catch(die);
+}
+
+function buildFolder() {
+  // eslint-disable-next-line no-console
+  console.log('Creating build directory');
+  return new Promise((resolve, reject) => {
+    tmp.dir((err, buildFolder) => {
+      if (err) {
+        reject(err);
+      } else {
+        resolve(buildFolder);
+      }
+    });
+  }).catch(die);
+}
+
+module.exports = {
+  buildFolder,
+  compile,
+  die,
+  compileDefaultPlugins,
+};