Made it not depend on fs-extra.

package.json

@@ -15,7 +15,7 @@
     "lint:fix": "eslint . --fix",
     "test:sp": "mocha \"test_sp/**/*.js\" --reporter dot",
     "test:v:node6": "npm run test:v:high && npm run test:v:latest && npm i",
-    "test:v:node4": "npm i babel-eslint@8 fs-extra@5 --no-save && npm run test:v:low && npm i",
+    "test:v:node4": "npm i babel-eslint@8 --no-save && npm run test:v:low && npm i",
     "test:v:high": "npm i eslint@5.0.0 parse5@5.0.0 --no-save && npm run test:base",
     "test:v:low": "npm i eslint@4.15.0 parse5@4.0.0 --no-save && npm run test:base",
     "test:v:latest": "npm i eslint@latest parse5@latest --no-save && npm run test:base",
@@ -62,7 +62,6 @@
     "babel-eslint": "^9.0.0",
     "eslint": "^5.3.0",
     "eslint-plugin-local": "^1.0.0",
-    "fs-extra": "^7.0.0",
     "if-node-version": "^1.1.1",
     "mocha": "^5.2.0",
     "nyc": "^13.0.1",
@@ -71,8 +70,5 @@
   "dependencies": {
     "esquery": "^1.0.0",
     "parse5": "^4.0.0 || ^5.0.0"
-  },
-  "greenkeeper": {
-    "ignore": []
   }
 }

tests/index.js

@@ -3,7 +3,7 @@
 const assert = require("assert")
 const path = require("path")
 const eslint = require("eslint")
-const fs = require("fs-extra")
+const fs = require("fs")
 const plugin = require("..")
 
 const CLIEngine = eslint.CLIEngine
@@ -12,6 +12,25 @@ const ORIGINAL_FIXTURE_DIR = path.join(__dirname, "fixtures")
 const FIXTURE_DIR = path.join(__dirname, "temp")
 const CONFIG_PATH = path.join(ORIGINAL_FIXTURE_DIR, "test.eslintrc.js")
 
+/**
+ * Remove dir
+ * @param {string} dirPath dir path
+ * @returns {void}
+ */
+function removeDirSync(dirPath) {
+    if (fs.existsSync(dirPath)) {
+        for (const file of fs.readdirSync(dirPath)) {
+            const curPath = `${dirPath}/${file}`
+            if (fs.lstatSync(curPath).isDirectory()) {
+                removeDirSync(curPath)
+            } else {
+                fs.unlinkSync(curPath)
+            }
+        }
+        fs.rmdirSync(dirPath)
+    }
+}
+
 /**
  * Assert the messages
  * @param {Array} actual The actual messages
@@ -70,18 +89,19 @@ describe("index test", () => {
 
 describe("Basic tests", () => {
     beforeEach(() => {
-        fs.emptyDirSync(FIXTURE_DIR)
+        removeDirSync(FIXTURE_DIR)
+        fs.mkdirSync(FIXTURE_DIR)
         for (const fileName of fs.readdirSync(ORIGINAL_FIXTURE_DIR)) {
             const src = path.join(ORIGINAL_FIXTURE_DIR, fileName)
             const dst = path.join(FIXTURE_DIR, fileName)
 
             if (fs.statSync(src).isFile()) {
-                fs.copySync(src, dst)
+                fs.writeFileSync(dst, fs.readFileSync(src))
             }
         }
     })
     afterEach(() => {
-        fs.removeSync(FIXTURE_DIR)
+        removeDirSync(FIXTURE_DIR)
     })
 
     describe("About fixtures/hello.html", () => {