From a641de41faaf6851cf9177ff87acd0d3e16494fb Mon Sep 17 00:00:00 2001
From: Jamie Mason <jamie@foldleft.io>
Date: Wed, 23 Aug 2017 10:23:25 +0100
Subject: [PATCH] fix(copy-values): write results to disk

---
 src/copy-values.js | 22 +++++++++++++---------
 1 file changed, 13 insertions(+), 9 deletions(-)

diff --git a/src/copy-values.js b/src/copy-values.js
index 400d1864..dc72041a 100644
--- a/src/copy-values.js
+++ b/src/copy-values.js
@@ -2,26 +2,30 @@ import path from 'path';
 import chalk from 'chalk';
 import { get, set } from 'lodash';
 import getFiles from './lib/get-files';
+import writeJson from './lib/write-json';
 
 const getPackage = location => ({ location, json: require(location) });
-const formatValue = value => JSON.stringify(value);
+const toJson = value => JSON.stringify(value);
+
+const reportChange = (key, previous, next) => {
+  if (toJson(previous) === toJson(next)) {
+    console.log(`${key}: ${chalk.green('✓ unchanged')}`);
+  } else {
+    console.log(`${key}: ${chalk.red(toJson(previous))} → ${chalk.green(toJson(next))}`);
+  }
+};
 
 export default async ({ keys, packagesPattern, sourcePattern }) => {
   const [source] = (await getFiles(sourcePattern)).map(getPackage);
   const packages = (await getFiles(packagesPattern)).map(getPackage);
-
   packages.forEach(pkg => {
     console.log(chalk.grey.underline(path.relative(process.cwd(), pkg.location)));
     keys.forEach(key => {
       const value = get(source.json, key);
-      const previousValue = formatValue(get(pkg.json, key));
+      const previousValue = get(pkg.json, key);
       set(pkg.json, key, value);
-      const nextValue = formatValue(value);
-      if (previousValue === nextValue) {
-        console.log(`${key}: ${chalk.green('✓ unchanged')}`);
-      } else {
-        console.log(`${key}: ${chalk.red(previousValue)} → ${chalk.green(nextValue)}`);
-      }
+      writeJson(pkg.location, pkg.json);
+      reportChange(key, previousValue, value);
     });
   });
 };