Update for Node 4 use to prevent major semver bump

.eslintrc.yml

@@ -1,8 +1,18 @@
 extends: airbnb-base
 plugins:
   - import
+
+parserOptions:
+  ecmaVersion: 5
+
+env:
+  node: true
+  browser: false
+  es6: false
+
 rules:
     no-console: off
     func-names: off
     max-len: off
     no-confusing-arrow: off
+    object-shorthand: off

.travis.yml

@@ -1,7 +1,7 @@
 language: node_js
 
 node_js:
-  - "node"
+  - "10"
   - "8"
   - "6"
   - "4"
@@ -16,11 +16,6 @@ env:
   - WEBPACK_VERSION=3
   - WEBPACK_VERSION=4
 
-matrix:
-  exclude:
-  - node_js: "4"
-    env: WEBPACK_VERSION=4
-
 install:
   - npm install
   - npm rm webpack

index.js

@@ -186,7 +186,7 @@ CaseSensitivePathsPlugin.prototype.apply = function (compiler) {
               if (resolvedFilesCount === compilation.fileDependencies.size) {
                 if (errors.length) {
                   // Send all errors to webpack
-                  compilation.errors.push(...errors);
+                  Array.prototype.push.apply(compilation.errors, errors);
                 }
                 callback();
               }

test/index.js

@@ -13,7 +13,7 @@ const webpackPkg = require('webpack/package.json');
 
 const CaseSensitivePathsPlugin = require('../');
 
-function webpackCompilerAtDir(dir, otherOpts) {
+function webpackCompilerAtDir(dir, otherOpts, useBeforeEmitHook) {
   const opts = Object.assign({
     context: path.join(__dirname, 'fixtures', dir),
     entry: './entry',
@@ -22,7 +22,9 @@ function webpackCompilerAtDir(dir, otherOpts) {
       filename: 'result.js',
     },
     plugins: [
-      new CaseSensitivePathsPlugin(),
+      new CaseSensitivePathsPlugin({
+        useBeforeEmitHook: useBeforeEmitHook,
+      }),
     ],
   }, otherOpts);
 
@@ -56,6 +58,26 @@ describe('CaseSensitivePathsPlugin', () => {
         done();
       });
     });
+
+    it('should handle errors correctly in emit hook mode', (done) => {
+      const compiler = webpackCompilerAtDir('wrong-case', {}, true);
+
+      compiler.run((err, stats) => {
+        if (err) done(err);
+        assert(stats.hasErrors());
+        assert.equal(stats.hasWarnings(), false);
+        const jsonStats = stats.toJson();
+        assert.equal(jsonStats.errors.length, 1);
+
+        const error = jsonStats.errors[0];
+        // check that the plugin produces the correct output
+        assert(error.indexOf('[CaseSensitivePathsPlugin]') > -1);
+        assert(error.indexOf('ExistingTestFile.js') > -1); // wrong file require
+        assert(error.indexOf('existingTestFile.js') > -1); // actual file name
+
+        done();
+      });
+    });
   }
 
   // For future reference: This test is somewhat of a race condition, these values seem to work well.