refactor: use chalk from webpack-log (#293)

Author: shellscape

lib/fs.js

@@ -2,9 +2,9 @@
 
 const fs = require('fs');
 const path = require('path');
-const chalk = require('chalk'); // eslint-disable-line import/no-extraneous-dependencies
 const MemoryFileSystem = require('memory-fs');
 const pathabs = require('path-is-absolute');
+const { chalk } = require('webpack-log');
 const NodeOutputFileSystem = require('webpack/lib/node/NodeOutputFileSystem');
 const DevMiddlewareError = require('./DevMiddlewareError');