From 2fbac7e7a7e41d2c00287605385a185ad71e628d Mon Sep 17 00:00:00 2001
From: Romain Deltour <rdeltour@gmail.com>
Date: Tue, 12 Dec 2017 03:41:57 +0100
Subject: [PATCH] chore: allow package-specific extra build scripts

If a package has a custom build scripts (`scripts/build.js`), this script
will be run during the main build task.
---
 scripts/build-utils.js |  8 ++++++++
 scripts/build.js       | 14 +++++++-------
 2 files changed, 15 insertions(+), 7 deletions(-)

diff --git a/scripts/build-utils.js b/scripts/build-utils.js
index 1b5384e4..83b8cbef 100644
--- a/scripts/build-utils.js
+++ b/scripts/build-utils.js
@@ -5,6 +5,13 @@ const path = require('path');
 
 const PACKAGES_DIR = path.resolve(__dirname, '../packages');
 
+const config = {
+  srcDir: 'src',
+  buildDir: 'lib',
+  jsPattern: '**/*.js',
+  ignorePattern: '**/*.test.js',
+};
+
 function listPackages() {
   return fs
     .readdirSync(PACKAGES_DIR)
@@ -13,6 +20,7 @@ function listPackages() {
 }
 
 module.exports = {
+  config,
   listPackages,
   PACKAGES_DIR,
 };
diff --git a/scripts/build.js b/scripts/build.js
index a99fb7ce..f99a09e2 100644
--- a/scripts/build.js
+++ b/scripts/build.js
@@ -16,15 +16,10 @@ const glob = require('glob');
 const micromatch = require('micromatch');
 const mkdirp = require('mkdirp');
 const path = require('path');
+const spawn = require('cross-spawn');
 
-const { listPackages, PACKAGES_DIR } = require('./build-utils');
 
-const config = {
-  srcDir: 'src',
-  buildDir: 'lib',
-  jsPattern: '**/*.js',
-  ignorePattern: '**/*.test.js',
-};
+const { config, listPackages, PACKAGES_DIR } = require('./build-utils');
 
 const babelConfig = JSON.parse(
   fs.readFileSync(path.resolve(__dirname, '..', '.babelrc'), 'utf8'));
@@ -80,6 +75,11 @@ function buildPackage(pkg) {
   process.stdout.write(`  ${path.basename(pkg)}  ${chalk.dim('...')}`);
 
   files.forEach(file => buildFile(file, true));
+
+  const buildScript = path.resolve(pkg, 'scripts/build.js');
+  if (fs.existsSync(buildScript)) {
+    spawn.sync('node', [buildScript], { stdio: 'inherit' });
+  }
   process.stdout.write(`${chalk.reset.bold.green('  ✓ Done')}\n`);
 }