feat: add webpack 3 support

Author: yibn2008

.gitignore

@@ -13,3 +13,6 @@
 /.idea
 /test/runtime/*
 /perf/dist/*
+
+
+.justconf

.npmignore

@@ -13,3 +13,6 @@ lib-cov
 /test/
 /.idea
 /perf/
+
+
+.justconf

lib/index.js

@@ -1,7 +1,7 @@
 'use strict'
 
 const path = require('path')
-const fs = require('fs-promise')
+const fs = require('fs-extra')
 const preview = require('cli-source-preview')
 const replaceAsync = require('./replace')
 const co = require('co')

package.json

@@ -7,7 +7,7 @@
     "lint": "standard --fix && npm-ensure -t deps",
     "test": "npm run lint && npm run test-local",
     "test-local": "mocha test/**/*.test.js",
-    "test-cov": "istanbul cover _mocha --report lcov -- test/**/*.test.js",
+    "test-cov": "nyc npm run test-local",
     "test-report": "cat ./coverage/lcov.info | ./node_modules/coveralls/bin/coveralls.js && rm -rf ./coverage",
     "ci": "npm run lint && npm run test-cov && npm run test-report",
     "release": "npm test && npm-ensure -t changelog && git release $npm_package_version && npm publish",
@@ -20,6 +20,13 @@
       ]
     }
   },
+  "nyc": {
+    "reporter": [
+      "text",
+      "json",
+      "lcov"
+    ]
+  },
   "standard": {
     "global": [
       "describe",
@@ -36,7 +43,7 @@
     "async": "^2.0.1",
     "cli-source-preview": "^1.0.0",
     "co": "^4.6.0",
-    "fs-promise": "^0.5.0",
+    "fs-extra": "3.x",
     "loader-utils": "^1.1.0"
   },
   "peerDependencies": {
@@ -46,17 +53,17 @@
   "devDependencies": {
     "coveralls": "^2.12.0",
     "css-loader": "^0.23.1",
-    "extract-text-webpack-plugin": "^2.0.0",
+    "extract-text-webpack-plugin": "^3.0.0",
     "file-loader": "^0.9.0",
-    "husky": "^0.13.2",
-    "istanbul": "^0.4.5",
+    "husky": "*",
+    "nyc": "*",
     "mocha": "^3.2.0",
     "node-sass": "^4.0.0",
     "npm-ensure": "^1.1.0",
     "raw-loader": "^0.5.1",
     "rimraf": "^2.6.1",
     "sass-loader": "^6.0.3",
-    "standard": "^9.0.2",
+    "standard": "*",
     "webpack": "1.x || 2.x || 3.x"
   },
   "repository": {