add process wrapper to handle logs

lib/core/processWrapper.js

@@ -0,0 +1,41 @@
+const constants = require('../constants');
+
+// Override process.chdir so that we have a partial-implementation PWD for Windows
+const realChdir = process.chdir;
+process.chdir = (...args) => {
+  if (!process.env.PWD) {
+    process.env.PWD = process.cwd();
+  }
+  realChdir(...args);
+};
+
+class ProcessWrapper {
+  constructor(_options) {
+    this.interceptLogs();
+  }
+
+  interceptLogs() {
+    const context = {};
+    context.console = console;
+
+    context.console.log = this.log.bind(this, 'log');
+    context.console.warn = this.log.bind(this, 'warn');
+    context.console.info = this.log.bind(this, 'info');
+    context.console.debug = this.log.bind(this, 'debug');
+    context.console.trace = this.log.bind(this, 'trace');
+    context.console.dir = this.log.bind(this, 'dir');
+  }
+
+  log(type, ...messages) {
+    if (messages[0].indexOf('hard-source')) {
+      return;
+    }
+    process.send({result: constants.pipeline.log, message: messages, type});
+  }
+}
+
+process.on('exit', () => {
+  process.exit(0);
+});
+
+module.exports = ProcessWrapper;

lib/pipeline/webpackProcess.js

@@ -4,42 +4,11 @@ const utils = require('../utils/utils');
 const fs = require('../core/fs');
 const constants = require('../constants');
 const HardSourceWebpackPlugin = require('hard-source-webpack-plugin');
-
+const ProcessWrapper = require('../core/processWrapper');
-// Override process.chdir so that we have a partial-implementation PWD for Windows
-const realChdir = process.chdir;
-process.chdir = (...args) => {
-  if (!process.env.PWD) {
-    process.env.PWD = process.cwd();
-  }
-  realChdir(...args);
-};
 
 let webpackProcess;
 
-class WebpackProcess {
+class WebpackProcess extends ProcessWrapper {
-  constructor(_options) {
-    this.interceptLogs();
-  }
-
-  interceptLogs() {
-    const context = {};
-    context.console = console;
-
-    context.console.log = this.log.bind(this, 'log');
-    context.console.warn = this.log.bind(this, 'warn');
-    context.console.info = this.log.bind(this, 'info');
-    context.console.debug = this.log.bind(this, 'debug');
-    context.console.trace = this.log.bind(this, 'trace');
-    context.console.dir = this.log.bind(this, 'dir');
-  }
-
-  log(type, ...messages) {
-    if (messages[0].indexOf('hard-source')) {
-      return;
-    }
-    process.send({result: constants.pipeline.log, message: messages, type});
-  }
-
   build(file, importsList, callback) {
     const self = this;
     let realCwd;
@@ -150,7 +119,3 @@ process.on('message', (msg) => {
     });
   }
 });
-
-process.on('exit', () => {
-  process.exit(0);
-});