一旦引入 html-webpack-plugin就报错

window10 ，npm版本2.14.12 ，node版本7.8.0 

不使用html-webpack-plugin的时候能够正常打包（代码应该没写错，跟视频还有html-webpack-plugin的npm主页里用法一致）

package.json里面：

"devDependencies": {

    "html-webpack-plugin": "^2.28.0",

    "webpack": "^2.3.2"

  }

webpack.config.js里面：

var HtmlWebpackPlugin = require('html-webpack-plugin');

plugins: [   new HtmlWebpackPlugin() ]

报错信息：

ERROR in   TypeError: Cannot read property '0' of undefined

  - ExternalModuleFactoryPlugin.js:19

    [Webpac-in-action]/[.2.6.1@webpack]/lib/ExternalModuleFactoryPlugin.js:19:40

  - NormalModuleFactory.js:159

    [nodejs]/[webpack]/lib/NormalModuleFactory.js:159:3

  - Tapable.js:75 NormalModuleFactory.applyPluginsAsyncWaterfall

    [nodejs]/[webpack]/[tapable]/lib/Tapable.js:75:69

  - NormalModuleFactory.js:144 NormalModuleFactory.create

    [nodejs]/[webpack]/lib/NormalModuleFactory.js:144:8

  - Compilation.js:356 Compilation.process [as _addModuleChain]

    [nodejs]/[webpack]/lib/Compilation.js:356:16

  - Compilation.js:424 Compilation.process [as addEntry]

    [nodejs]/[webpack]/lib/Compilation.js:424:7

  - SingleEntryPlugin.js:24 Compiler.compiler.plugin

    [Webpac-in-action]/[.2.6.1@webpack]/lib/SingleEntryPlugin.js:24:16

  - Tapable.js:107 Compiler.applyPluginsParallel

    [nodejs]/[webpack]/[tapable]/lib/Tapable.js:107:14

  - Compiler.js:394 Compiler.compile

    [nodejs]/[webpack]/lib/Compiler.js:394:7

  - Compiler.js:203 Compiler.runAsChild

    [nodejs]/[webpack]/lib/Compiler.js:203:7

  - compiler.js:70

    [Webpac-in-action]/[.2.28.0@html-webpack-plugin]/lib/compiler.js:70:19

  - debuggability.js:300 Promise._execute

    [Webpac-in-action]/[.3.5.0@bluebird]/js/release/debuggability.js:300:9

  - promise.js:483 Promise._resolveFromExecutor

    [Webpac-in-action]/[.3.5.0@bluebird]/js/release/promise.js:483:18

  - promise.js:79 new Promise

    [Webpac-in-action]/[.3.5.0@bluebird]/js/release/promise.js:79:10

  - compiler.js:69 Object.compileTemplate

    [Webpac-in-action]/[.2.28.0@html-webpack-plugin]/lib/compiler.js:69:10

  - index.js:47 Compiler.<anonymous>

    [Webpac-in-action]/[.2.28.0@html-webpack-plugin]/index.js:47:40

  - Tapable.js:107 Compiler.applyPluginsParallel

    [nodejs]/[webpack]/[tapable]/lib/Tapable.js:107:14

  - Compiler.js:394 Compiler.compile

    [nodejs]/[webpack]/lib/Compiler.js:394:7

  - Compiler.js:173 Compiler.<anonymous>

    [nodejs]/[webpack]/lib/Compiler.js:173:9

  - Compiler.js:302 Compiler.readRecords

    [nodejs]/[webpack]/lib/Compiler.js:302:10

  - Compiler.js:170 Compiler.<anonymous>

    [nodejs]/[webpack]/lib/Compiler.js:170:8

  - Tapable.js:67 Compiler.next

    [nodejs]/[webpack]/[tapable]/lib/Tapable.js:67:11

  - NodeEnvironmentPlugin.js:23 Compiler.<anonymous>

    [nodejs]/[webpack]/lib/node/NodeEnvironmentPlugin.js:23:3

  - Tapable.js:69 Compiler.next

    [nodejs]/[webpack]/[tapable]/lib/Tapable.js:69:14

  - CachePlugin.js:22 Compiler.<anonymous>

    [nodejs]/[webpack]/lib/CachePlugin.js:22:58

  - Tapable.js:71 Compiler.applyPluginsAsync

    [nodejs]/[webpack]/[tapable]/lib/Tapable.js:71:13

  - Compiler.js:167 Compiler.run

    [nodejs]/[webpack]/lib/Compiler.js:167:7

  - webpack.js:188 processOptions

    [nodejs]/[webpack]/bin/webpack.js:188:12

  - webpack.js:192 Object.<anonymous>

    [nodejs]/[webpack]/bin/webpack.js:192:1