feat: 🎸 add back Lerna support

lib/defaults.js

@@ -79,7 +79,7 @@ const questions = [
  'body',
  'breaking',
  'issues',
- // 'lerna'
+ 'lerna'
 ];
 
 module.exports = {

lib/questions/lerna.js

@@ -1,6 +1,9 @@
+const {getAllPackages, getChangedPackages} = require('../util/lerna');
+
 exports.createQuestion = (state) => {
+ const changedPackages = getChangedPackages(state);
  const question = {
- choices: allPackages,
+ choices: getAllPackages(state),
  default: changedPackages,
  message: `The packages that this commit has affected (${changedPackages.length} detected)\n`,
  name: 'packages',

lib/util/lerna.js

@@ -0,0 +1,52 @@
+const {execSync} = require('child_process');
+const path = require('path');
+const fs = require('fs');
+
+const isDir = (root) => (name) => {
+ const filepath = path.join(root, name);
+
+ try {
+ const stats = fs.statSync(filepath);
+
+ return stats.isDirectory();
+ } catch (error) {
+ return false;
+ }
+};
+
+const getAllPackages = (state) => {
+ try {
+ const dir = path.join(state.root, 'packages');
+
+ return fs.readdirSync(dir).map(isDir(dir));
+ } catch (error) {
+ return [];
+ }
+};
+
+const getChangedFiles = () =>
+ execSync('git diff --cached --name-only 2>/dev/null')
+ .toString()
+ .trim()
+ .split('\n');
+
+const getChangedPackages = () => {
+ const unique = {};
+ const changedFiles = getChangedFiles();
+ const regex = /^packages\/([^/]+)\//;
+
+ for (const filename of changedFiles) {
+ const matches = filename.match(regex);
+
+ if (matches) {
+ unique[matches[1]] = 1;
+ }
+ }
+
+ return Object.keys(unique);
+};
+
+module.exports = {
+ getAllPackages,
+ getChangedPackages
+};