Code under example folder do not work. #353

ERROR in ../client-overlay.js
Module not found: Error: Can't resolve 'ansi-html' in '/home/hacksign/Code/webpack-hot-middleware'
 @ ../client-overlay.js 24:15-35
 @ ../client.js?path=/__webpack_hmr&timeout=20000&reload=true
 @ multi ./client.js webpack-hot-middleware/client?path=/__webpack_hmr&timeout=20000&reload=true

ERROR in ../client-overlay.js
Module not found: Error: Can't resolve 'html-entities' in '/home/hacksign/Code/webpack-hot-middleware'
 @ ../client-overlay.js 38:15-39
 @ ../client.js?path=/__webpack_hmr&timeout=20000&reload=true
 @ multi ./client.js webpack-hot-middleware/client?path=/__webpack_hmr&timeout=20000&reload=true

ERROR in ../client.js?path=/__webpack_hmr&timeout=20000&reload=true
Module not found: Error: Can't resolve 'strip-ansi' in '/home/hacksign/Code/webpack-hot-middleware'
 @ ../client.js?path=/__webpack_hmr&timeout=20000&reload=true 162:14-35
 @ multi ./client.js webpack-hot-middleware/client?path=/__webpack_hmr&timeout=20000&reload=true

hacksign@XSignLaptop [01:28:55] : ~/Code 
>> git clone https://github.com/webpack-contrib/webpack-hot-middleware
正克隆到 'webpack-hot-middleware'...
remote: Enumerating objects: 28, done.
remote: Counting objects: 100% (28/28), done.
remote: Compressing objects: 100% (20/20), done.
remote: Total 1062 (delta 7), reused 28 (delta 7), pack-reused 1034
接收对象中: 100% (1062/1062), 580.23 KiB | 1.68 MiB/s, 完成.
处理 delta 中: 100% (573/573), 完成.
hacksign@XSignLaptop [01:29:00] : ~/Code 
>> cd webpack-hot-middleware/example/
hacksign@XSignLaptop [01:29:04] : ~/Code/webpack-hot-middleware/example |master✓
>> npm install
npm WARN webpack-hot-middleware-example@1.0.0 No repository field.
npm WARN optional SKIPPING OPTIONAL DEPENDENCY: fsevents@1.2.4 (node_modules/fsevents):
npm WARN notsup SKIPPING OPTIONAL DEPENDENCY: Unsupported platform for fsevents@1.2.4: wanted {"os":"darwin","arch":"any"} (current: {"os":"linux","arch":"x64"})

added 427 packages from 342 contributors in 4.829s
hacksign@XSignLaptop [01:29:14] : ~/Code/webpack-hot-middleware/example |master⚡*
>> npm run start:multientry

> webpack-hot-middleware-example@1.0.0 start:multientry /home/hacksign/Code/webpack-hot-middleware/example
> WEBPACK_CONFIG=./webpack.config.multientry.js node server.js

[01:29:18.120] [LOG]    Listening on {"address":"::","family":"IPv6","port":1616}
[01:29:18.363] [LOG]    webpack built cf483b5caf4611b57a5d in 267ms
[01:29:18.389] [ERROR]  ✖ ｢wdm｣: Hash: cf483b5caf4611b57a5d
Version: webpack 4.27.1
Time: 267ms
Built at: 2019/04/13 上午1:29:18
        Asset      Size  Chunks  Chunk Names
    client.js  91.9 KiB  client  client
client.js.map   101 KiB  client  client
     extra.js    52 KiB   extra  extra
 extra.js.map  54.9 KiB   extra  extra
Entrypoint client = client.js client.js.map
Entrypoint extra = extra.js extra.js.map
[0] multi ./client.js webpack-hot-middleware/client?path=/__webpack_hmr&timeout=20000&reload=true 40 bytes {client} [built]
[1] multi ./extra.js webpack-hot-middleware/client?path=/__webpack_hmr&timeout=20000&reload=true 40 bytes {extra} [built]
[../client-overlay.js] 2.17 KiB {client} {extra} [built]
[../client.js?path=/__webpack_hmr&timeout=20000&reload=true] 7.68 KiB {client} {extra} [built]
[../process-update.js] 4.35 KiB {client} {extra} [built]
[./client.js] 847 bytes {client} [built]
[./extra.js] 103 bytes {extra} [built]
[./node_modules/assert/assert.js] 15.1 KiB {client} [built]
[./node_modules/inherits/inherits_browser.js] 672 bytes {client} [built]
[./node_modules/querystring-es3/decode.js] 2.45 KiB {client} {extra} [built]
[./node_modules/querystring-es3/encode.js] 2.48 KiB {client} {extra} [built]
[./node_modules/querystring-es3/index.js] 127 bytes {client} {extra} [built]
[./node_modules/util/util.js] 15.2 KiB {client} [built]
[./node_modules/webpack/buildin/global.js] (webpack)/buildin/global.js 472 bytes {client} [built]
[./node_modules/webpack/buildin/module.js] (webpack)/buildin/module.js 497 bytes {client} {extra} [built]
    + 2 hidden modules

ERROR in ../client-overlay.js
Module not found: Error: Can't resolve 'ansi-html' in '/home/hacksign/Code/webpack-hot-middleware'
 @ ../client-overlay.js 24:15-35
 @ ../client.js?path=/__webpack_hmr&timeout=20000&reload=true
 @ multi ./client.js webpack-hot-middleware/client?path=/__webpack_hmr&timeout=20000&reload=true

ERROR in ../client-overlay.js
Module not found: Error: Can't resolve 'html-entities' in '/home/hacksign/Code/webpack-hot-middleware'
 @ ../client-overlay.js 38:15-39
 @ ../client.js?path=/__webpack_hmr&timeout=20000&reload=true
 @ multi ./client.js webpack-hot-middleware/client?path=/__webpack_hmr&timeout=20000&reload=true

ERROR in ../client.js?path=/__webpack_hmr&timeout=20000&reload=true
Module not found: Error: Can't resolve 'strip-ansi' in '/home/hacksign/Code/webpack-hot-middleware'
 @ ../client.js?path=/__webpack_hmr&timeout=20000&reload=true 162:14-35
 @ multi ./client.js webpack-hot-middleware/client?path=/__webpack_hmr&timeout=20000&reload=true