Switch to Babel parser & Change JSHint to ESLint & Drop Support for Node 6

.eslintignore

@@ -0,0 +1 @@
+/tests/fixtures/

.eslintrc.js

@@ -0,0 +1,67 @@
+module.exports = {
+  root: true,
+  parserOptions: {
+    ecmaVersion: 2018,
+  },
+  plugins: ['mocha', 'node'],
+  extends: ['eslint:recommended', 'plugin:node/recommended', 'prettier'],
+  env: {
+    browser: false,
+    node: true,
+    es6: true,
+  },
+  globals: {},
+  rules: {
+    /*** For compatibility with existing source */
+    'no-var': 0,
+    'no-undef': 0,
+    'strict': 0,
+    'object-shorthand': 0,
+    'no-lonely-if': 0,
+
+    /*** Possible Errors ***/
+
+    'no-console': 0,
+    'no-template-curly-in-string': 2,
+    'no-unsafe-negation': 2,
+
+    /*** Best Practices ***/
+
+    curly: 2,
+    eqeqeq: 2,
+    'guard-for-in': 0,
+    'no-caller': 2,
+    'no-eq-null': 2,
+    'no-eval': 2,
+    'no-new': 0,
+    'no-unused-expressions': [
+      2,
+      {
+        allowShortCircuit: true,
+        allowTernary: true,
+      },
+    ],
+    'wrap-iife': 0,
+    yoda: 2,
+
+    /*** Variables ***/
+
+    'no-unused-vars': 2,
+    'no-use-before-define': [2, 'nofunc'],
+
+    /*** Stylistic Issues ***/
+
+    camelcase: 2,
+    'new-cap': [2, { properties: false }],
+    'no-array-constructor': 2,
+    'no-bitwise': 2,
+    'no-plusplus': 0,
+    'no-unneeded-ternary': 2,
+
+    /*** ECMAScript 6 ***/
+
+    'no-useless-computed-key': 2,
+    'prefer-template': 2,
+    'symbol-description': 2,
+  },
+};

.prettierrc.js

@@ -0,0 +1,7 @@
+'use strict';
+
+module.exports = {
+  singleQuote: true,
+  trailingComma: 'es5',
+  printWidth: 120,
+};

.travis.yml

@@ -1,6 +1,5 @@
 language: node_js
 node_js:
-  - '6'
   - '8'
   - '10'
 

lib/ember-router-generator.js

@@ -1,6 +1,7 @@
 module.exports = EmberRouterGenerator;
 
 var recast = require('recast');
+var parser = require('recast/parsers/babel');
 
 var findFunctionExpression = require('./helpers/find-function-expression');
 var findRoutes = require('./helpers/find-routes');
@@ -21,7 +22,7 @@ EmberRouterGenerator.prototype.clone = function() {
 };
 
 EmberRouterGenerator.prototype._ast  = function() {
-  return (this.ast = this.ast || recast.parse(this.source));
+  return (this.ast = this.ast || recast.parse(this.source, { parser }));
 };
 
 EmberRouterGenerator.prototype._walk  = function() {

package.json

@@ -19,14 +19,20 @@
     "url": "https://github.com/ember-cli/ember-router-generator.git"
   },
   "dependencies": {
+    "@babel/parser": "^7.4.5",
+    "@babel/traverse": "^7.4.5",
     "recast": "^0.18.1"
   },
   "devDependencies": {
     "assertion-error": "^1.1.0",
     "chai": "^4.2.0",
-    "esprima": "^2.7.2",
+    "eslint": "^6.0.1",
+    "eslint-config-prettier": "^6.0.0",
+    "eslint-plugin-mocha": "^5.3.0",
+    "eslint-plugin-node": "^9.1.0",
     "mocha": "^6.1.4",
-    "mocha-jshint": "2.3.1"
+    "mocha-eslint": "^5.0.0",
+    "prettier": "^1.18.2"
   },
   "author": "Adolfo Builes",
   "license": "MIT",
@@ -35,6 +41,6 @@
   },
   "homepage": "https://github.com/ember-cli/ember-router-generator",
   "engines": {
-    "node": "6.* || 8.* || >= 10.*"
+    "node": "8.* || 10.* || >= 12"
   }
 }

tests/fixtures/class-syntax-foos-route.js

@@ -0,0 +1,8 @@
+class AppRouter extends Router {
+  @someDecorator location = config.locationType;
+  rootURL = config.rootURL;
+}
+
+Router.map(function() {
+  this.route('foos');
+});

tests/fixtures/class-syntax.js

@@ -0,0 +1,7 @@
+class AppRouter extends Router {
+  @someDecorator location = config.locationType;
+  rootURL = config.rootURL;
+}
+
+Router.map(function() {
+});

tests/generator-test.js

@@ -1,10 +1,6 @@
 var EmberRouterGenerator = require('../index.js');
-var assert = require('assert');
 var fs = require('fs');
-var astEquality = require('./helpers/esprima-ast-equality');
-var recast = require('recast');
-var expect = require('chai').expect;
-
+var astEquality = require('./helpers/ast-equality');
 
 describe('Adding routes', function() {
   it('adds routes', function() {
@@ -16,6 +12,15 @@ describe('Adding routes', function() {
     astEquality(newRoutes.code(), fs.readFileSync('./tests/fixtures/foos-route.js'));
   });
 
+  it('handles files with class syntax', function() {
+    var source = fs.readFileSync('./tests/fixtures/class-syntax.js');
+
+    var routes = new EmberRouterGenerator(source);
+    var newRoutes = routes.add('foos');
+
+    astEquality(newRoutes.code(), fs.readFileSync('./tests/fixtures/class-syntax-foos-route.js'));
+  });
+
   it('leaves untouched existing routes', function() {
     var source = fs.readFileSync('./tests/fixtures/foos-route.js');
 

tests/helpers/esprima-ast-equality.js → tests/helpers/ast-equality.js

@@ -10,13 +10,16 @@ EqualityError.prototype = Object.create(Error.prototype);
 EqualityError.prototype.name = 'EqualityError';
 EqualityError.prototype.constructor = EqualityError;
 
-var assert = require('assert');
-var esprima = require('esprima');
 var recast = require('recast');
+var parser = require('recast/parsers/babel');
+var traverse = require('@babel/traverse').default;
 
 module.exports = function(actual, expected, message) {
-  var parsedActual   = esprima.parse(actual);
-  var parsedExpected = esprima.parse(expected);
+  var parsedActual   = recast.parse(actual.toString(), { parser });
+  var parsedExpected = recast.parse(expected.toString(), { parser });
+
+  // Removes source-specific metadata from AST nodes
+  stripSourceInfo(parsedActual, parsedExpected);
 
   var seemEqual = JSON.stringify(parsedActual) === JSON.stringify(parsedExpected);
 
@@ -27,3 +30,15 @@ module.exports = function(actual, expected, message) {
     );
   }
 };
+
+function stripSourceInfo(ast1, ast2) {
+  const stripNode = node => {
+    delete node.tokens;
+    delete node.loc;
+    delete node.start;
+    delete node.end;
+  }
+
+  traverse.cheap(ast1, stripNode);
+  traverse.cheap(ast2, stripNode);
+}

tests/jshint-test.js

@@ -1 +1 @@
-require('mocha-jshint')();
+require('mocha-eslint')(['lib', 'index.js', 'tests/*.js', 'tests/helpers']);