Step #4 ver.2

bin/gendiff.js

@@ -24,14 +24,7 @@ program
     const file1Parsed = fileParse(file1Content);
     const file2Parsed = fileParse(file2Content);
 
-    // console.log(absolutePath1);
-    // console.log(absolutePath2);
-    // console.log(file1Content);
-    // console.log(file2Content);
-    // console.log(file1Parsed);
-    // console.log(file2Parsed);
     console.log(genDiff(file1Parsed, file2Parsed));
-    // return genDiff(file1Parsed, file2Parsed);
   });
 
 program.parse(process.argv);

src/genDiff.js

@@ -1,27 +1,28 @@
 import _ from 'lodash';
 
 const genDiff = (file1, file2) => {
-  const fileDifferences = {};
   const file1KeysList = Object.keys(file1);
   const file2KeysList = Object.keys(file2);
   const summaryKeysList = _.sortBy(_.union(file1KeysList, file2KeysList));
 
-  summaryKeysList.forEach((key) => {
+  const fileDifferences = summaryKeysList.reduce((acc, key) => {
     if (key in file1 && key in file2) {
       if (file1[key] === file2[key]) {
-        fileDifferences[` ${key}`] = file1[key];
+        acc.push(`    ${key}: ${file1[key]}`);
       } else {
-        fileDifferences[`- ${key}`] = file1[key];
-        fileDifferences[`+ ${key}`] = file2[key];
+        acc.push(`  - ${key}: ${file1[key]}`);
+        acc.push(`  + ${key}: ${file2[key]}`);
       }
     } else if (key in file1) {
-      fileDifferences[`- ${key}`] = file1[key];
+      acc.push(`  - ${key}: ${file1[key]}`);
     } else if (key in file2) {
-      fileDifferences[`+ ${key}`] = file2[key];
+      acc.push(`  + ${key}: ${file2[key]}`);
     }
-  });
 
-  return fileDifferences;
+    return acc;
+  }, []);
+
+  return `{\n${fileDifferences.join('\n')}\n}`;
 };
 
 export default genDiff;