fix: support lerna v3 (conventional-changelog#406)

* chore: update lerna to v3.0.0-rc.0

* chore: update lerna in config-lerna-scopes to 3.0.4

* chore: update lerna to 3.0.4

* chore: fixed some async tests in config-lerna-scopes

* chore: update lerna to v3.1

* fix: support lerna 2, 3 simultaneously

Author: backflip

@commitlint/config-lerna-scopes/fixtures/basic/lerna.json

@@ -1,5 +1,5 @@
 {
-	"lerna": "2.0.0",
+    "lerna": "3.2.1",
 	"version": "1.0.0",
 	"packages": [
 		"packages/*"

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

@@ -2,6 +2,6 @@
     "name": "basic",
     "version": "1.0.0",
     "devDependencies": {
-        "lerna": "2.9.0"
+        "lerna": "3.2.1"
     }
 }

@commitlint/config-lerna-scopes/fixtures/empty/lerna.json

@@ -1,5 +1,5 @@
 {
-	"lerna": "2.0.0",
+    "lerna": "3.2.1",
 	"version": "1.0.0",
 	"packages": [
 		"packages/*"

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

@@ -2,6 +2,6 @@
     "name": "empty",
     "version": "1.0.0",
     "devDependencies": {
-        "lerna": "2.9.0"
+        "lerna": "3.2.1"
     }
 }

@commitlint/config-lerna-scopes/fixtures/lerna-2.0/lerna.json

@@ -2,6 +2,6 @@
     "name": "version-mismatch",
     "version": "1.0.0",
     "devDependencies": {
-        "lerna": "2.9.0"
+        "lerna": "2.4.0"
     }
 }

@commitlint/config-lerna-scopes/fixtures/lerna-2.0/package.json

@@ -1,5 +1,5 @@
 {
-	"lerna": "2.0.0",
+    "lerna": "3.2.1",
 	"version": "1.0.0",
 	"packages": [
 		"@packages/*"

@commitlint/config-lerna-scopes/fixtures/lerna-2.0/packages/a/package.json

@@ -2,6 +2,6 @@
     "name": "scoped",
     "version": "1.0.0",
     "devDependencies": {
-        "lerna": "2.9.0"
+        "lerna": "3.2.1"
     }
 }

@commitlint/config-lerna-scopes/fixtures/lerna-2.0/packages/b/package.json

@@ -1,26 +1,45 @@
+const Path = require('path');
 const importFrom = require('import-from');
+const resolvePkg = require('resolve-pkg');
+const semver = require('semver');
 
 module.exports = {
 	utils: {getPackages},
 	rules: {
-		'scope-enum': ctx => [2, 'always', getPackages(ctx)]
+		'scope-enum': ctx =>
+			getPackages(ctx).then(packages => [2, 'always', packages])
 	}
 };
 
 function getPackages(context) {
-	const ctx = context || {};
-	const cwd = ctx.cwd || process.cwd();
+	return Promise.resolve()
+		.then(() => {
+			const ctx = context || {};
+			const cwd = ctx.cwd || process.cwd();
+			const lernaVersion = getLernaVersion(cwd);
 
-	const Repository = importFrom(cwd, 'lerna/lib/Repository');
-	const PackageUtilities = importFrom(cwd, 'lerna/lib/PackageUtilities');
+			if (semver.lt(lernaVersion, '3.0.0')) {
+				const Repository = importFrom(cwd, 'lerna/lib/Repository');
+				const PackageUtilities = importFrom(cwd, 'lerna/lib/PackageUtilities');
 
-	const repository = new Repository(cwd);
-	const packages = PackageUtilities.getPackages({
-		packageConfigs: repository.packageConfigs,
-		rootPath: cwd
-	});
+				const repository = new Repository(cwd);
+				return PackageUtilities.getPackages({
+					packageConfigs: repository.packageConfigs,
+					rootPath: cwd
+				});
+			}
 
-	return packages
-		.map(pkg => pkg.name)
-		.map(name => (name.charAt(0) === '@' ? name.split('/')[1] : name));
+			const Project = importFrom(cwd, '@lerna/project');
+			const project = new Project(cwd);
+			return project.getPackages();
+		})
+		.then(packages => {
+			return packages
+				.map(pkg => pkg.name)
+				.map(name => (name.charAt(0) === '@' ? name.split('/')[1] : name));
+		});
+}
+
+function getLernaVersion(cwd) {
+	return require(Path.join(resolvePkg('lerna', {cwd}), 'package.json')).version;
 }

@commitlint/config-lerna-scopes/fixtures/lerna-2.4/package.json

@@ -39,14 +39,20 @@
     "url": "https://github.com/marionebl/commitlint/issues"
   },
   "homepage": "https://github.com/marionebl/commitlint#readme",
+  "peerDependencies": {
+    "lerna": "^3.0.0"
+  },
   "dependencies": {
     "import-from": "2.1.0",
-    "lerna": "2.9.0"
+    "resolve-pkg": "^1.0.0",
+    "semver": "^5.5.1"
   },
   "devDependencies": {
     "@commitlint/test": "^7.0.0",
     "@commitlint/utils": "^7.0.0",
+    "@lerna/project": "^3.0.0",
     "ava": "0.22.0",
+    "lerna": "3.1.1",
     "xo": "0.20.3"
   }
 }

@commitlint/config-lerna-scopes/fixtures/lerna-2.4/packages/a/package.json

@@ -19,63 +19,51 @@ test('scope-enum is function', t => {
 	t.is(typeof fn, 'function');
 });
 
-test('scope-enum does not throw for missing context', t => {
+test('scope-enum does not throw for missing context', async t => {
 	const {'scope-enum': fn} = config.rules;
-	t.notThrows(() => fn());
+	try {
+		await fn();
+		t.pass();
+	} catch (err) {
+		t.fail();
+	}
 });
 
-test('scope-enum has expected severity', t => {
+test('scope-enum has expected severity', async t => {
 	const {'scope-enum': fn} = config.rules;
-	const [severity] = fn();
+	const [severity] = await fn();
 	t.is(severity, 2);
 });
 
-test('scope-enum has expected modifier', t => {
+test('scope-enum has expected modifier', async t => {
 	const {'scope-enum': fn} = config.rules;
-	const [, modifier] = fn();
+	const [, modifier] = await fn();
 	t.is(modifier, 'always');
 });
 
 test('returns empty value for empty lerna repository', async t => {
 	const {'scope-enum': fn} = config.rules;
 	const cwd = await npm.bootstrap('fixtures/empty');
-	const [, , value] = fn({cwd});
+	const [, , value] = await fn({cwd});
 	t.deepEqual(value, []);
 });
 
 test('returns expected value for basic lerna repository', async t => {
 	const {'scope-enum': fn} = config.rules;
 	const cwd = await npm.bootstrap('fixtures/basic');
-	const [, , value] = fn({cwd});
+	const [, , value] = await fn({cwd});
 	t.deepEqual(value, ['a', 'b']);
 });
 
-test.failing(
-	'throws for repository with .lerna vs .devDependencies.lerna mismatch',
-	async t => {
-		const {'scope-enum': fn} = config.rules;
-		const cwd = await npm.bootstrap('fixtures/version-mismatch');
-		await t.throws(() => fn({cwd}));
-	}
-);
-
 test('returns expected value for scoped lerna repository', async t => {
 	const {'scope-enum': fn} = config.rules;
 	const cwd = await npm.bootstrap('fixtures/scoped');
-	const [, , value] = fn({cwd});
-	t.deepEqual(value, ['a', 'b']);
-});
-
-test('works with lerna 2.0', async t => {
-	const {'scope-enum': fn} = config.rules;
-	const cwd = await npm.bootstrap('fixtures/lerna-2.4');
-	const [, , value] = fn({cwd});
+	const [, , value] = await fn({cwd});
 	t.deepEqual(value, ['a', 'b']);
 });
 
-test('works with lerna 2.4', async t => {
+test('works with lerna version < 3', async t => {
 	const {'scope-enum': fn} = config.rules;
-	const cwd = await npm.bootstrap('fixtures/lerna-2.4');
-	const [, , value] = fn({cwd});
-	t.deepEqual(value, ['a', 'b']);
+	const cwd = await npm.bootstrap('fixtures/lerna-two');
+	await t.notThrows(async () => fn({cwd}));
 });

@commitlint/config-lerna-scopes/fixtures/lerna-2.4/packages/b/package.json

@@ -1,5 +1,5 @@
 {
-  "lerna": "2.5.1",
+  "lerna": "3.1.1",
   "npmClient": "yarn",
   "useWorkspaces": true,
   "version": "7.0.1"

@commitlint/config-lerna-scopes/fixtures/lerna-2.4/lerna.json renamed to @commitlint/config-lerna-scopes/fixtures/lerna-two/lerna.json

@@ -96,7 +96,7 @@
     "eslint": "4.18.1",
     "eslint-config-prettier": "2.9.0",
     "husky": "0.14.3",
-    "lerna": "2.9.0",
+    "lerna": "3.1.1",
     "lint-staged": "6.1.1",
     "npx": "9.7.1",
     "prettier": "1.10.2",