style(eslint): Fix ESLint errors

Author: hicom150

lib/preprocessor.js

@@ -13,7 +13,6 @@ var _ = require('lodash')
 var SourceMapConsumer = require('source-map').SourceMapConsumer
 var SourceMapGenerator = require('source-map').SourceMapGenerator
 var globalSourceCache = require('./source-cache')
-var extend = require('util')._extend
 var coverageMap = require('./coverage-map')
 
 // Regexes
@@ -29,13 +28,13 @@ function createCoveragePreprocessor (logger, helper, basePath, reporters, covera
   // -------
 
   var instrumenterOverrides = {}
-  var instrumenters = {istanbul: istanbul}
+  var instrumenters = { istanbul: istanbul }
   var includeAllSources = false
   var useJSExtensionForCoffeeScript = false
 
   if (coverageReporter) {
     instrumenterOverrides = coverageReporter.instrumenter
-    instrumenters = extend({istanbul: istanbul}, coverageReporter.instrumenters)
+    instrumenters = Object.assign({}, { istanbul: istanbul }, coverageReporter.instrumenters)
     includeAllSources = coverageReporter.includeAllSources === true
     useJSExtensionForCoffeeScript = coverageReporter.useJSExtensionForCoffeeScript === true
   }
@@ -84,7 +83,7 @@ function createCoveragePreprocessor (logger, helper, basePath, reporters, covera
     var instrumenterLiteral = 'istanbul'
 
     _.forEach(instrumenterOverrides, function (literal, pattern) {
-      if (minimatch(file.originalPath, pattern, {dot: true})) {
+      if (minimatch(file.originalPath, pattern, { dot: true })) {
         instrumenterLiteral = String(literal)
       }
     })
@@ -95,7 +94,7 @@ function createCoveragePreprocessor (logger, helper, basePath, reporters, covera
 
     if (file.sourceMap) {
       log.debug('Enabling source map generation for "%s".', file.originalPath)
-      codeGenerationOptions = extend({
+      codeGenerationOptions = Object.assign({}, {
         format: {
           compact: !constructOptions.noCompact
         },
@@ -105,8 +104,8 @@ function createCoveragePreprocessor (logger, helper, basePath, reporters, covera
       }, constructOptions.codeGenerationOptions || {})
     }
 
-    var options = extend({}, constructOptions)
-    options = extend(options, {codeGenerationOptions: codeGenerationOptions})
+    var options = Object.assign({}, constructOptions)
+    options = Object.assign({}, options, { codeGenerationOptions: codeGenerationOptions })
 
     var instrumenter = new InstrumenterConstructor(options)
     instrumenter.instrument(content, jsPath, function (err, instrumentedCode) {
@@ -120,7 +119,7 @@ function createCoveragePreprocessor (logger, helper, basePath, reporters, covera
           generator.applySourceMap(new SourceMapConsumer(file.sourceMap))
           file.sourceMap = JSON.parse(generator.toString())
           instrumentedCode += '\n//# sourceMappingURL=data:application/json;charset=utf-8;base64,'
-          instrumentedCode += new Buffer(JSON.stringify(file.sourceMap)).toString('base64') + '\n'
+          instrumentedCode += Buffer.from(JSON.stringify(file.sourceMap)).toString('base64') + '\n'
         }
 
         // remember the actual immediate instrumented JS for given original path

lib/reporter.js

@@ -98,7 +98,7 @@ var CoverageReporter = function (rootConfig, helper, logger, emitter) {
     Object.keys(covObj).forEach(function (key) {
       // Do any patterns match the resolved key
       var found = patterns.some(function (pattern) {
-        return minimatch(normalize(key), pattern, {dot: true})
+        return minimatch(normalize(key), pattern, { dot: true })
       })
 
       // if no patterns match, keep the key
@@ -115,7 +115,7 @@ var CoverageReporter = function (rootConfig, helper, logger, emitter) {
 
     // First match wins
     Object.keys(overrides).some(function (pattern) {
-      if (minimatch(normalize(key), pattern, {dot: true})) {
+      if (minimatch(normalize(key), pattern, { dot: true })) {
         thresholds = overrides[pattern]
         return true
       }
@@ -283,7 +283,7 @@ var CoverageReporter = function (rootConfig, helper, logger, emitter) {
         })
         var reporter = istanbul.Report.create(reporterConfig.type || 'html', options)
 
-         // If reporting to console or in-memory skip directory creation
+        // If reporting to console or in-memory skip directory creation
         var toDisk = !reporterConfig.type || !reporterConfig.type.match(/^(text|text-summary|in-memory)$/)
         var hasNoFile = _.isUndefined(reporterConfig.file)
 
@@ -307,8 +307,8 @@ var CoverageReporter = function (rootConfig, helper, logger, emitter) {
     if (pendingFileWritings) {
       fileWritingFinished = (
         typeof config._onExit === 'function'
-        ? (function (done) { return function () { config._onExit(done) } }(done))
-        : done
+          ? (function (done) { return function () { config._onExit(done) } }(done))
+          : done
       )
     } else {
       (typeof config._onExit === 'function' ? config._onExit(done) : done())

package.json

@@ -57,6 +57,9 @@
     "sinon": "^1.14.1",
     "sinon-chai": "^2.8.0"
   },
+  "engines": {
+    "node": ">=6.0.0"
+  },
   "contributors": [
     "dignifiedquire <dignifiedquire@gmail.com>",
     "Friedel Ziegelmayer <dignifiedquire@gmail.com>",