feat(commits): initial functionality

src/lib/commits.js

@@ -0,0 +1,25 @@
+const { exec } = require('child_process')
+
+module.exports = function (results, cb) {
+  const from = results.lastRelease.gitHead
+  const range = (from ? from + '..' : '') + 'HEAD'
+
+  exec(
+    `git log -E --format=%H==SPLIT==%B==END== ${range}`,
+    (err, stdout) => {
+      if (err) return cb(err)
+
+      cb(null, String(stdout).split('==END==\n')
+
+      .filter((raw) => !!raw.trim())
+
+      .map((raw) => {
+        const data = raw.split('==SPLIT==')
+        return {
+          hash: data[0],
+          message: data[1]
+        }
+      }))
+    }
+  )
+}