🐛 Fix bug preventing generating changelog when previous version doesn…

…'t exist (#145)

packages/gitmoji-changelog-cli/src/cli.e2e.js

@@ -107,6 +107,18 @@ describe('generate changelog', () => {
   })
 
   describe('update', () => {
+    it("should get a 1.0.0 version while initializing changelog by calling cli without arguments two times and having package.json's version set to 1.0.0", async () => {
+      await bumpVersion('1.0.0')
+      await makeChanges('file1')
+      await commit(':sparkles: Add some file')
+      gitmojiChangelog()
+      await makeChanges('file2')
+      await commit(':sparkles: Add a second file')
+      gitmojiChangelog()
+
+      expect(getChangelog()).includes(['second file'])
+    })
+
     it("should get two versions 1.0.0 and next while updating changelog by calling cli without arguments and having package.json's version set to 1.0.0", async () => {
       await makeChanges('file1')
       await commit(':sparkles: Add some file')

packages/gitmoji-changelog-cli/src/cli.js

@@ -70,10 +70,16 @@ async function main(options = {}) {
         const lastVersion = await getLatestVersion(options.output)
         const newOptions = set(options, 'meta.lastVersion', lastVersion)
 
+        // Handle the case where changelog file exist but there isn't a previous version
+        if (options.mode === 'update' && !lastVersion) {
+          newOptions.mode = 'init'
+
+          fs.unlinkSync(options.output)
+        }
+
         const changelog = await getChangelog(newOptions, projectInfo)
 
         logMetaData(changelog)
-
         await buildMarkdownFile(changelog, newOptions)
       }
     }
@@ -100,7 +106,6 @@ async function getChangelog(options, projectInfo) {
     release,
   }
 
-  // let changelog = await generateChangelog(enhancedOptions)
   let changelog
   if (options.mode === 'init') {
     changelog = await generateChangelog('', release, enhancedOptions)

packages/gitmoji-changelog-markdown/src/index.js

@@ -127,6 +127,8 @@ async function getLatestVersion(markdownFile) {
   const isNext = result[1] === 'next' || !tags.some(tag => semver.eq(tag, result[1]))
   if (!isNext) return result[1]
 
+  if (!previousVersion) return null
+
   const previousResult = previousVersion.match(/<a name="([\w.-]+?)"><\/a>/)
   return previousResult[1]
 }