feat(config-lerna-scopes): support yarn workspaces

@commitlint/config-lerna-scopes/fixtures/yarn/@packages/a/package.json

@@ -0,0 +1,4 @@
+{
+  "name": "@packages/a",
+  "version": "1.0.0"
+}

@commitlint/config-lerna-scopes/fixtures/yarn/@packages/b/package.json

@@ -0,0 +1,4 @@
+{
+  "name": "@packages/b",
+  "version": "1.0.0"
+}

@commitlint/config-lerna-scopes/fixtures/yarn/package.json

@@ -0,0 +1,10 @@
+{
+  "name": "yarn",
+  "version": "1.0.0",
+  "devDependencies": {
+    "lerna": "^3.0.0"
+  },
+  "workspaces": [
+    "@packages/*"
+  ]
+}

@commitlint/config-lerna-scopes/index.js

@@ -1,6 +1,7 @@
 const Path = require('path');
 const importFrom = require('import-from');
 const resolvePkg = require('resolve-pkg');
+const Globby = require('globby');
 const semver = require('semver');
 
 module.exports = {
@@ -16,8 +17,21 @@ function getPackages(context) {
 		.then(() => {
 			const ctx = context || {};
 			const cwd = ctx.cwd || process.cwd();
-			const lernaVersion = getLernaVersion(cwd);
 
+			const {workspaces} = require(Path.join(cwd, 'package.json'));
+			if (Array.isArray(workspaces) && workspaces.length) {
+				// use yarn workspaces
+				return Globby(
+					workspaces.map((ws) => {
+						return Path.posix.join(ws, 'package.json');
+					}),
+					{cwd}
+				).then((pJsons = []) => {
+					return pJsons.map((pJson) => require(Path.join(cwd, pJson)));
+				});
+			}
+
+			const lernaVersion = getLernaVersion(cwd);
 			if (semver.lt(lernaVersion, '3.0.0')) {
 				const Repository = importFrom(cwd, 'lerna/lib/Repository');
 				const PackageUtilities = importFrom(cwd, 'lerna/lib/PackageUtilities');

@commitlint/config-lerna-scopes/index.test.js

@@ -1,3 +1,4 @@
+import Path from 'path';
 import {lerna} from '@commitlint/test';
 import config from '.';
 
@@ -66,3 +67,10 @@ test('returns expected value for scoped lerna repository', async () => {
 	const [, , value] = await fn({cwd});
 	expect(value).toEqual(['a', 'b']);
 });
+
+test('returns expected value for yarn workspaces', async () => {
+	const {'scope-enum': fn} = config.rules;
+	const cwd = Path.join(__dirname, 'fixtures', 'yarn');
+	const [, , value] = await fn({cwd});
+	expect(value.sort()).toEqual(['a', 'b']);
+});

@commitlint/config-lerna-scopes/package.json

@@ -1,7 +1,7 @@
 {
   "name": "@commitlint/config-lerna-scopes",
   "version": "11.0.0",
-  "description": "Shareable commitlint config enforcing lerna package names as scopes",
+  "description": "Shareable commitlint config enforcing lerna package and workspace names as scopes",
   "files": [
     "index.js"
   ],
@@ -32,6 +32,7 @@
     "node": ">=v10.22.1"
   },
   "dependencies": {
+    "globby": "^11.0.1",
     "import-from": "3.0.0",
     "resolve-pkg": "2.0.0",
     "semver": "7.3.4"

@commitlint/config-lerna-scopes/readme.md

@@ -2,7 +2,7 @@
 
 # @commitlint/config-lerna-scopes
 
-Shareable `commitlint` config enforcing lerna package names as scopes.
+Shareable `commitlint` config enforcing lerna package and workspace names as scopes.
 Use with [@commitlint/cli](../cli) and [@commitlint/prompt-cli](../prompt-cli).
 
 ## Getting started