feat: add generate changelog feature

Author: lekterable

CHANGELOG.md

@@ -1,3 +1,4 @@
 ## Latest
 
+- chore: add CHANGELOG.md f14c2848
 - feat: init :seedling: c681eb22

bin/perfekt.js

@@ -1,5 +1,11 @@
 #!/usr/bin/env node
 
-const perfekt = require('../dist').default
+const { program } = require('commander')
+const { changelog } = require('../dist').default
 
-perfekt()
+program
+  .command('changelog')
+  .description('generate package changelog')
+  .action(() => changelog())
+
+program.parse(process.argv)

package-lock.json

@@ -29,6 +29,9 @@
     "semver"
   ],
   "license": "MIT",
+  "dependencies": {
+    "commander": "^5.0.0"
+  },
   "devDependencies": {
     "@babel/core": "^7.9.0",
     "@babel/preset-env": "^7.9.5",

package.json

@@ -1 +1,18 @@
-console.log('init')
+import { exec } from 'child_process'
+
+const changelog = () =>
+  exec('git log --format="%H %s"', (_, res) => {
+    let changelog = '## Latest\n\n'
+    const commits = res.split('\n').filter(commit => commit)
+    commits.forEach(commit => {
+      const {
+        groups: { hash, title }
+      } = commit.match(/(?<hash>.{40}) (?<title>.*)/)
+
+      changelog += `- ${title} ${hash.slice(0, 8)}\n`
+    })
+
+    return process.stdout.write(changelog)
+  })
+
+export default { changelog }