Merge 20ad92c into 750c66c

package.json

@@ -60,7 +60,7 @@
         "lint": "npm run check-version && npm run eslint && npm run jscs && npm run complexity",
         "check-version": "node tools/check-version.js",
         "jscs": "jscs esprima.js",
-        "eslint": "node node_modules/eslint/bin/eslint.js esprima.js",
+        "eslint": "node node_modules/eslint/bin/eslint.js -c .lintrc esprima.js",
         "complexity": "node tools/list-complexity.js && cr -s -l -w --maxcyc 19 esprima.js",
 
         "coverage": "npm run analyze-coverage && npm run check-coverage",
@@ -70,6 +70,8 @@
         "benchmark": "node test/benchmarks.js",
         "benchmark-quick": "node test/benchmarks.js quick",
 
-        "travis": "npm test && coveralls < ./coverage/lcov.info"
+        "coveralls": "coveralls < ./coverage/lcov.info",
+        "downstream": "node test/downstream.js",
+        "travis": "npm test && npm run coveralls && npm run downstream"
     }
 }

test/downstream.js

@@ -0,0 +1,64 @@
+var child_process = require('child_process'),
+    fs = require('fs');
+
+function execute(cmd) {
+    child_process.execSync(cmd, { stdio: 'inherit' });
+}
+
+function copy_file(source, target) {
+    fs.writeFileSync(target, fs.readFileSync(source));
+}
+
+function test_project(project, repo) {
+    console.log();
+    console.log('==========', project);
+    console.log();
+    console.log('Cloning', repo, '...');
+    execute('git clone --depth 1 ' + repo + ' ' + project);
+
+    process.chdir(project);
+    console.log();
+    console.log('HEAD is');
+    execute('git log -n1');
+
+    console.log();
+    execute('npm install');
+
+    console.log();
+    console.log('Replacing esprima.js with a fresh one...');
+    copy_file('../../esprima.js', './node_modules/esprima/esprima.js');
+
+    console.log();
+    try {
+        execute('npm test');
+    } catch (e) {
+        console.log('Failing: ', e.toString());
+        process.exit(1);
+    }
+    process.chdir('..');
+}
+
+function test_downstream(projects) {
+    if (typeof child_process.execSync !== 'function') {
+        console.log('This only works with Node.js >= 0.12 that support execSync');
+        process.exit(0);
+    }
+
+    var downstream_path = 'downstream';
+    if (!fs.existsSync(downstream_path)) {
+        fs.mkdirSync(downstream_path, 0766);
+    }
+    process.chdir(downstream_path);
+
+    Object.keys(projects).forEach(function (project) {
+        test_project(project, projects[project]);
+    });
+}
+
+test_downstream({
+    'escope': 'https://github.com/estools/escope.git',
+    'escodegen': 'https://github.com/estools/escodegen.git',
+    'escomplex-js': 'https://github.com/philbooth/escomplex-js.git',
+    'istanbul': 'https://github.com/gotwarlost/istanbul.git'
+});
+