webpack3.10.0打包fs,net,tls报错，添加fs:empty依然报错，求解决办法

Question

ERROR in ./node_modules/spdy/lib/spdy/server.js
Module not found: Error: Can't resolve 'tls' in 'F:\liuxk\qnz-web\node_modules\spdy\lib\spdy'
 @ ./node_modules/spdy/lib/spdy/server.js 6:10-24
 @ ./node_modules/spdy/lib/spdy.js
 @ (webpack)-dev-server/lib/Server.js
 @ ./bin/dev-server.js
 @ multi (webpack)-dev-server/client?http://localhost:8080 ./bin/dev-server.js
 
ERROR in ./node_modules/send/index.js
Module not found: Error: Can't resolve 'fs' in 'F:\liuxk\qnz-web\node_modules\send'
 @ ./node_modules/send/index.js 23:9-22
 @ ./node_modules/serve-static/index.js
 @ ./node_modules/express/lib/express.js
 @ ./node_modules/express/index.js
 @ (webpack)-dev-server/lib/Server.js
 @ ./bin/dev-server.js
 @ multi (webpack)-dev-server/client?http://localhost:8080 ./bin/dev-server.js
 
 
ERROR in ./node_modules/express/lib/request.js
Module not found: Error: Can't resolve 'net' in 'F:\liuxk\qnz-web\node_modules\express\lib'
 @ ./node_modules/express/lib/request.js 18:11-25
 @ ./node_modules/express/lib/express.js
 @ ./node_modules/express/index.js
 @ (webpack)-dev-server/lib/Server.js
 @ ./bin/dev-server.js
 @ multi (webpack)-dev-server/client?http://localhost:8080 ./bin/dev-server.js
 

webpack:3.10.0
webpack-dev-server:2.9.7
我已经在webpack中配置了node，但是依然报错，求解决办法