Migrate from jshint to eslint (RobotWebTools#670)

Author: EzraBrooks

.jshintrc

@@ -1,7 +1,7 @@
 *.md
 .github
 .gitignore
-.jshintrc
+.eslint.config.js
 Gruntfile.js
 bower.json
 examples

.npmignore

@@ -13,6 +13,9 @@ module.exports = function(grunt) {
     shell: {
       ts: {
         command: 'tsc -p .'
+      },
+      eslint: {
+        command: 'eslint .'
       }
     },
     browserify: {
@@ -21,12 +24,6 @@ module.exports = function(grunt) {
         dest: './build/roslib.js'
       }
     },
-    jshint: {
-      options: {
-        jshintrc: true
-      },
-      files: ['./Gruntfile.js', './src/**/*.js']
-    },
     karma: {
       options: {
         singleRun: true,
@@ -82,7 +79,7 @@ module.exports = function(grunt) {
         options: {
           interrupt: true
         },
-        files: ['Gruntfile.js', '.jshintrc', './src/**/*.js'],
+        files: ['Gruntfile.js', 'eslint.config.js', './src/**/*.js'],
         tasks: ['build']
       }
     },
@@ -104,10 +101,10 @@ module.exports = function(grunt) {
   });
 
   grunt.registerTask('dev', ['browserify', 'watch']);
-  grunt.registerTask('test', ['jshint', 'mochaTest:test', 'karma:test']);
+  grunt.registerTask('test', ['shell:eslint', 'mochaTest:test', 'karma:test']);
   grunt.registerTask('test-examples', ['mochaTest:examples', 'karma:examples']);
   grunt.registerTask('test-tcp', ['mochaTest:tcp']);
-  grunt.registerTask('build', ['shell', 'browserify', 'uglify']);
+  grunt.registerTask('build', ['shell:ts', 'browserify', 'uglify']);
   grunt.registerTask('build_and_watch', ['watch']);
   grunt.registerTask('doc', ['clean', 'jsdoc']);
 };

Gruntfile.js

@@ -0,0 +1,35 @@
+const globals = require("globals");
+
+module.exports = [
+  {
+    languageOptions: {
+      "globals": {
+        ...globals.browser,
+        ...globals.node,
+        "bson": true
+      },
+    }
+  },
+  {
+    ignores: ['build/**/*.js', 'tsbuild/**/*.js']
+  },
+  {
+    rules: {
+      curly: 2,
+      eqeqeq: 2,
+      'wrap-iife': [2, 'any'],
+      'no-use-before-define': 0,
+      'new-cap': 2,
+      'no-caller': 2,
+      'dot-notation': 0,
+      'no-undef': 2,
+      'no-cond-assign': 0,
+      'no-eq-null': 0,
+      strict: 0,
+      quotes: [2, 'single'],
+      'no-proto': 2,
+      'linebreak-style': 2
+    },
+    files: ['Gruntfile.js', 'src/**/*.js']
+  }
+];