feat(travis-cli): add reusable travis command line interface

* related #99

.editorconfig

@@ -4,7 +4,7 @@ insert_final_newline = true
 trim_trailing_whitespace = true
 indent_style = tab
 
-[{.*rc,*.yml,*.md,package.json,*.svg}]
+[{.*rc,*.yml,*.md,package.json,lerna.json,*.svg}]
 indent_style = space
 
 [*.md]

.travis.yml

@@ -6,12 +6,13 @@ node_js:
 install:
   - npm install -g npx
   - npx yarn install
-  - npx lerna bootstrap --since $TRAVIS_BRANCH --include-filtered-dependencies --stream
+  - npx lerna bootstrap
   - npm --version
   - yarn --version
   - npx --version
 script:
-  - npx yarn build --since $TRAVIS_BRANCH --include-filtered-dependencies --stream
-  - npx yarn lint --since $TRAVIS_BRANCH --include-filtered-dependencies --stream
-  - npx yarn deps --since $TRAVIS_BRANCH --include-filtered-dependencies --stream
-  - npx yarn test --since $TRAVIS_BRANCH --include-filtered-dependencies --stream
+  - npx yarn build
+  - node @commitlint/travis-cli/lib/cli.js
+  - npx yarn lint
+  - npx yarn deps
+  - npx yarn test

@commitlint/cli/index.js

@@ -0,0 +1,3 @@
+const path = require('path');
+
+module.exports = path.join(__dirname, 'lib/cli.js');

@commitlint/cli/package.json

@@ -6,13 +6,13 @@
     "commitlint": "./lib/cli.js"
   },
   "scripts": {
-    "build": "npx cross-env NODE_ENV=production npx -p babel-cli babel src --out-dir lib --source-maps",
+    "build": "cross-env NODE_ENV=production babel src --out-dir lib --source-maps",
     "clean": "npx rimraf lib",
     "deps": "dep-check",
-    "lint": "npx xo",
-    "start": "npx concurrently \"npx ava -c 4 --verbose --watch\" \"npx yarn run watch\"",
-    "test": "npx ava -c 4 --verbose",
-    "watch": "npx -p babel-cli babel src --out-dir lib --watch --source-maps"
+    "lint": "xo",
+    "start": "concurrently \"ava -c 4 --verbose --watch\" \"yarn run watch\"",
+    "test": "ava -c 4 --verbose",
+    "watch": "babel src --out-dir lib --watch --source-maps"
   },
   "ava": {
     "files": [

@commitlint/config-angular-type-enum/package.json

@@ -5,7 +5,7 @@
   "scripts": {
     "clean": "exit 0",
     "deps": "dep-check",
-    "lint": "npx xo",
+    "lint": "xo",
     "start": "exit 0",
     "test": "exit 0"
   },

@commitlint/config-angular/package.json

@@ -5,7 +5,7 @@
   "scripts": {
     "clean": "exit 0",
     "deps": "dep-check",
-    "lint": "npx xo",
+    "lint": "xo",
     "start": "exit 0",
     "test": "exit 0"
   },

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

@@ -4,9 +4,9 @@
   "description": "Shareable commitlint config enforcing lerna package names as scopes",
   "scripts": {
     "clean": "exit 0",
-    "lint": "npx xo",
-    "start": "npx ava --watch --verbose",
-    "test": "npx ava --verbose"
+    "lint": "xo",
+    "start": "ava --watch --verbose",
+    "test": "ava --verbose"
   },
   "xo": false,
   "ava": {

@commitlint/config-patternplate/package.json

@@ -5,7 +5,7 @@
   "scripts": {
     "clean": "exit 0",
     "deps": "dep-check",
-    "lint": "npx xo",
+    "lint": "xo",
     "start": "exit 0",
     "test": "exit 0"
   },

@commitlint/core/package.json

@@ -4,13 +4,13 @@
   "description": "Lint your commit messages",
   "main": "lib/index.js",
   "scripts": {
-    "build": "npx cross-env NODE_ENV=production npx -p babel-cli babel src --out-dir lib  --source-maps",
+    "build": "cross-env NODE_ENV=production babel src --out-dir lib  --source-maps",
     "clean": "npx rimraf lib",
     "deps": "dep-check",
-    "lint": "npx xo",
-    "start": "npx concurrently \"npx ava -c 4 --verbose --watch\" \"npx yarn run watch\"",
-    "test": "npx ava -c 4 --verbose && npx ava \"src/*.serial-test.js\" --verbose",
-    "watch": "npx -p babel-cli babel src --out-dir lib --watch --source-maps"
+    "lint": "xo",
+    "start": "concurrently \"ava -c 4 --verbose --watch\" \"yarn run watch\"",
+    "test": "ava -c 4 --verbose && ava \"src/*.serial-test.js\" --verbose",
+    "watch": "babel src --out-dir lib --watch --source-maps"
   },
   "ava": {
     "files": [

@commitlint/prompt-cli/package.json

@@ -9,7 +9,7 @@
     "clean": "npx rimraf lib",
     "commit": "$npm_package_bin_commit",
     "deps": "dep-check",
-    "lint": "npx xo"
+    "lint": "xo"
   },
   "xo": false,
   "repository": {

@commitlint/prompt/package.json

@@ -4,14 +4,14 @@
   "description": "commitizen prompt using commitlint.config.js",
   "main": "./lib/index.js",
   "scripts": {
-    "build": "npx cross-env NODE_ENV=production npx -p babel-cli babel src --out-dir lib --source-maps",
+    "build": "cross-env NODE_ENV=production babel src --out-dir lib --source-maps",
     "clean": "npx rimraf lib",
-    "commit": "npx git-cz",
+    "commit": "git-cz",
     "deps": "dep-check",
-    "lint": "npx xo",
-    "start": "npx concurrently \"npx ava --watch --verbose\" \"npx yarn run watch\"",
-    "test": "npx ava --verbose",
-    "watch": "npx -p babel-cli babel src --out-dir lib --watch  --source-maps"
+    "lint": "xo",
+    "start": "concurrently \"ava --watch --verbose\" \"yarn run watch\"",
+    "test": "ava --verbose",
+    "watch": "babel src --out-dir lib --watch  --source-maps"
   },
   "ava": {
     "babel": "inherit",

@commitlint/travis-cli/README.md

@@ -0,0 +1,19 @@
+> Lint all relevant commits for a change or PR on Travis CI
+
+# @commitlint/travis-cli
+
+This package is a convenience wrapper around `commitlint`, 
+providing zero-configuration linting of all relevant commits
+for a given change/build combination.
+
+## Getting started
+
+```
+npm install --save-dev @commitlint/travis-cli
+```
+
+```yml
+# .travis.yml
+script
+  - commitlint-travis
+```

@commitlint/travis-cli/fixtures/commitlint.js

@@ -0,0 +1,2 @@
+#!/usr/bin/env node
+console.log(process.argv);

@commitlint/travis-cli/fixtures/git.js

@@ -0,0 +1,2 @@
+#!/usr/bin/env node
+console.log(process.argv);

@commitlint/travis-cli/package.json

@@ -0,0 +1,72 @@
+{
+  "name": "@commitlint/travis-cli",
+  "version": "5.0.1",
+  "description": "Lint all relevant commits for a change or PR on Travis CI",
+  "bin": {
+    "commitlint-travis": "./lib/cli.js"
+  },
+  "scripts": {
+    "build": "cross-env NODE_ENV=production babel src --out-dir lib --source-maps",
+    "clean": "npx rimraf lib",
+    "deps": "dep-check",
+    "lint": "xo",
+    "start": "ava -c 4 --verbose --watch",
+    "test": "ava -c 4 --verbose",
+    "watch": "babel src --out-dir lib --watch --source-maps"
+  },
+  "ava": {
+    "files": [
+      "src/**/*.test.js"
+    ],
+    "source": [
+      "lib/**/*.js"
+    ],
+    "babel": "inherit",
+    "require": [
+      "babel-register"
+    ]
+  },
+  "babel": {
+    "presets": [
+      "babel-preset-commitlint"
+    ]
+  },
+  "xo": false,
+  "engines": {
+    "node": ">=4"
+  },
+  "repository": {
+    "type": "git",
+    "url": "https://github.com/marionebl/commitlint.git"
+  },
+  "bugs": {
+    "url": "https://github.com/marionebl/commitlint/issues"
+  },
+  "homepage": "https://github.com/marionebl/commitlint#readme",
+  "keywords": [
+    "conventional-changelog",
+    "commitlint",
+    "cli"
+  ],
+  "author": {
+    "name": "Mario Nebl",
+    "email": "hello@herebecode.com"
+  },
+  "license": "MIT",
+  "devDependencies": {
+    "@commitlint/utils": "^5.0.1",
+    "@commitlint/test": "^5.0.1",
+    "ava": "0.18.2",
+    "babel-cli": "6.26.0",
+    "babel-preset-commitlint": "^5.0.1",
+    "babel-register": "6.26.0",
+    "cross-env": "5.1.1",
+    "which": "^1.3.0"
+  },
+  "dependencies": {
+    "@commitlint/cli": "^5.0.1",
+    "@marionebl/sander": "^0.6.1",
+    "execa": "^0.8.0",
+    "find-up": "^2.1.0"
+  }
+}

@commitlint/travis-cli/src/cli.js

@@ -0,0 +1,78 @@
+#!/usr/bin/env node
+const sander = require('@marionebl/sander');
+const execa = require('execa');
+const findUp = require('find-up');
+
+// Allow to override used bins for testing purposes
+const GIT = process.env.TRAVIS_COMMITLINT_GIT_BIN || 'git';
+const COMMITLINT =
+	process.env.TRAVIS_COMMITLINT_BIN || require('@commitlint/cli'); // eslint-disable-line import/newline-after-import
+const REQUIRED = ['TRAVIS_COMMIT', 'TRAVIS_BRANCH'];
+
+const TRAVIS_BRANCH = process.env.TRAVIS_BRANCH;
+const TRAVIS_COMMIT = process.env.TRAVIS_COMMIT;
+
+main().catch(err => {
+	console.log(err);
+	process.exit(1);
+});
+
+async function main() {
+	if (process.env.CI !== 'true' || process.env.TRAVIS !== 'true') {
+		throw new Error(
+			`@commitlint/travis-cli is inteded to be used on Travis CI`
+		);
+	}
+
+	const gitRoot = await findUp('.git');
+	const missing = REQUIRED.filter(envVar => !(envVar in process.env));
+
+	if (missing.length > 0) {
+		const stanza = missing.length > 1 ? 'they were not' : 'it was not';
+		throw new Error(
+			`Expected ${missing.join(', ')} to be defined globally, ${stanza}.`
+		);
+	}
+
+	const pop = await stash();
+
+	await git(['remote', 'set-branches', 'origin', TRAVIS_BRANCH]);
+
+	if (await sander.exists(gitRoot, 'shallow')) {
+		await git(['fetch', '--unshallow', '--quiet']);
+	}
+
+	await git(['checkout', TRAVIS_BRANCH, '--quiet']);
+	await git(['checkout', '-', '--quiet']);
+
+	await pop();
+
+	await lint(['--from', TRAVIS_BRANCH, '--to', TRAVIS_COMMIT]);
+}
+
+async function git(args, options) {
+	return execa(GIT, args, Object.assign({}, {stdio: 'inherit'}, options));
+}
+
+async function isClean() {
+	const result = await git(['status', '--porcelain'], {
+		stdio: ['pipe', 'pipe', 'pipe']
+	});
+	return !(result.stdout && result.stdout.trim());
+}
+
+async function lint(args, options) {
+	return execa(
+		COMMITLINT,
+		args,
+		Object.assign({}, {stdio: 'inherit'}, options)
+	);
+}
+
+async function stash() {
+	if (await isClean()) {
+		return async () => {};
+	}
+	await git(['stash']);
+	return () => git(['stash', 'pop']);
+}