Drop node.js v6 support

.travis.yml

@@ -45,9 +45,6 @@ jobs:
     - <<: *node
       node_js: '8'
 
-    - <<: *node
-      node_js: '6'
-
     - script: npm start test.bundle test.browser
       install: npm ci # we need the native modules here
       addons:

appveyor.yml

@@ -15,7 +15,6 @@ environment:
     - nodejs_version: '11'
     - nodejs_version: '10'
     - nodejs_version: '8'
-    - nodejs_version: '6'
 matrix:
   fast_finish: true
 install:

docs/README.md

@@ -6,7 +6,7 @@ _So you wanna build the site?_
 
 ## Prerequisites
 
-- Node.js v6.x or greater
+- Node.js v8.x or greater
 
 ## Development
 

docs/index.md

@@ -98,7 +98,7 @@ or as a development dependency for your project:
 $ npm install --save-dev mocha
 ```
 
-> As of v6.0.0, Mocha requires Node.js v6.0.0 or newer.
+> As of v6.0.0, Mocha requires Node.js v8.0.0 or newer.
 
 ## Getting Started
 

package.json

@@ -495,7 +495,7 @@
     "test": "./test"
   },
   "engines": {
-    "node": ">= 6.0.0"
+    "node": ">= 8.0.0"
   },
   "scripts": {
     "prepublishOnly": "nps test clean build",

test/integration/options/debug.spec.js

@@ -77,54 +77,4 @@ describe('--debug', function() {
       );
     });
   });
-
-  describe('Node.js v6', function() {
-    // note that v6.3.0 and newer supports --inspect but still supports --debug.
-    before(function() {
-      if (process.version.substring(0, 2) !== 'v6') {
-        this.skip();
-      }
-    });
-
-    it('should start debugger', function(done) {
-      var proc = invokeMocha(
-        ['--debug', DEFAULT_FIXTURE],
-        function(err, res) {
-          if (err) {
-            return done(err);
-          }
-          expect(res, 'to contain output', /Debugger listening/i);
-          done();
-        },
-        'pipe'
-      );
-
-      // debugger must be manually killed
-      setTimeout(function() {
-        process.kill(proc.pid, 'SIGINT');
-      }, 2000);
-    });
-
-    it('should respect custom host/port', function(done) {
-      var proc = invokeMocha(
-        ['--debug=127.0.0.1:9229', DEFAULT_FIXTURE],
-        function(err, res) {
-          if (err) {
-            return done(err);
-          }
-          expect(
-            res,
-            'to contain output',
-            /Debugger listening on .*127.0.0.1:9229/i
-          );
-          done();
-        },
-        'pipe'
-      );
-
-      setTimeout(function() {
-        process.kill(proc.pid, 'SIGINT');
-      }, 2000);
-    });
-  });
 });