chore: Remove arrify dependency. (#1058)

index.js

@@ -2,7 +2,6 @@
 
 /* global __coverage__ */
 
-const arrify = require('arrify')
 const cachingTransform = require('caching-transform')
 const util = require('util')
 const findCacheDir = require('find-cache-dir')
@@ -44,12 +43,12 @@ function NYC (config) {
   this._buildProcessTree = this._showProcessTree || config.buildProcessTree
   this._eagerInstantiation = config.eager || false
   this.cwd = config.cwd || process.cwd()
-  this.reporter = arrify(config.reporter || 'text')
+  this.reporter = [].concat(config.reporter || 'text')
 
   this.cacheDirectory = (config.cacheDir && path.resolve(config.cacheDir)) || findCacheDir({ name: 'nyc', cwd: this.cwd })
   this.cache = Boolean(this.cacheDirectory && config.cache)
 
-  this.extensions = arrify(config.extension)
+  this.extensions = [].concat(config.extension || [])
     .concat('.js')
     .map(ext => ext.toLowerCase())
     .filter((item, pos, arr) => arr.indexOf(item) === pos)
@@ -68,7 +67,7 @@ function NYC (config) {
   })
 
   // require extensions can be provided as config in package.json.
-  this.require = arrify(config.require)
+  this.require = [].concat(config.require || [])
 
   this.transforms = this.extensions.reduce((transforms, ext) => {
     transforms[ext] = this._createTransform(ext)

lib/config-util.js

@@ -1,6 +1,5 @@
 'use strict'
 
-const arrify = require('arrify')
 const fs = require('fs')
 const path = require('path')
 const findUp = require('find-up')
@@ -37,10 +36,10 @@ Config.loadConfig = function (argv, cwd) {
     }
   }
 
-  if (config.require) config.require = arrify(config.require)
-  if (config.extension) config.extension = arrify(config.extension)
-  if (config.exclude) config.exclude = arrify(config.exclude)
-  if (config.include) config.include = arrify(config.include)
+  if (config.require) config.require = [].concat(config.require)
+  if (config.extension) config.extension = [].concat(config.extension)
+  if (config.exclude) config.exclude = [].concat(config.exclude)
+  if (config.include) config.include = [].concat(config.include)
 
   return config
 }

package.json

@@ -68,7 +68,6 @@
   "license": "ISC",
   "dependencies": {
     "archy": "^1.0.0",
-    "arrify": "^1.0.1",
     "caching-transform": "^3.0.2",
     "convert-source-map": "^1.6.0",
     "find-cache-dir": "^2.1.0",