1 WARNING in ./node_modules/_webpack@3.10.0@webpack/buildin/global.js 2 There are multiple modules with names that only differ in casing. 3 This can lead to unexpected behavior when compiling on a filesystem with other case-semantic. 4 Use equal casing. Compare these module identifiers: 5 * E:\Project\webpack\node_modules\_webpack@3.10.0@webpack\buildin\global.js 6 Used by 1 module(s), i. e. 7 E:\Project\webpack\node_modules\_sockjs-client@1.1.4@sockjs-client\dist\sockjs.js 8 * e:\Project\webpack\node_modules\_webpack@3.10.0@webpack\buildin\global.js 9 Used by 1 module(s), i. e. 10 e:\Project\webpack\node_modules\_punycode@1.4.1@punycode\punycode.js 11 @ ./node_modules/_webpack@3.10.0@webpack/buildin/global.js 12 @ ./node_modules/_sockjs-client@1.1.4@sockjs-client/dist/sockjs.js 13 @ ./node_modules/_webpack-dev-server@2.11.1@webpack-dev-server/client/socket.js 14 @ ./node_modules/_webpack-dev-server@2.11.1@webpack-dev-server/client?http://localhost:8080 15 @ multi ./node_modules/_webpack-dev-server@2.11.1@webpack-dev-server/client?http://localhost:8080 ./main.js
把node_modules包删除，然后重新安装一下
来源：https://www.cnblogs.com/it-Ren/p/10597833.html