1、錯誤描述

C:\Users\Administrator>cd cmaC:\Users\Administrator\cma>webpack you.js today.js Hash: 39919aae8cb041a7549f Version: webpack 4.10.2 Time: 588ms Built at: 2018-06-01 21:01:061 asset Entrypoint main = main.js [0] ./you.js 288 bytes {0} [built] [1] multi ./you.js today.js 40 bytes {0} [built]WARNING in configuration The 'mode' option has not been set, webpack will fallback to 'production' for th is value. Set 'mode' option to 'development' or 'production' to enable defaults for each environment. You can also set it to 'none' to disable any default behavior. Learn more: https ://webpack.js.org/concepts/mode/ERROR in multi ./you.js today.js Module not found: Error: Can't resolve 'today.js' in 'C:\Users\Administrator\cma '@ multi ./you.js today.jsC:\Users\Administrator\cma>webpack you.js today.js Hash: 2ffa3d7e0a8a6e808dda Version: webpack 4.10.2 Time: 613ms Built at: 2018-06-01 21:11:11Asset Size Chunks Chunk Names main.js 1.1 KiB 0 [emitted] main Entrypoint main = main.js [0] ./today.js 0 bytes {0} [built] [1] ./you.js 288 bytes {0} [built] [2] multi ./you.js ./today.js 40 bytes {0} [built]WARNING in configuration The 'mode' option has not been set, webpack will fallback to 'production' for th is value. Set 'mode' option to 'development' or 'production' to enable defaults for each environment. You can also set it to 'none' to disable any default behavior. Learn more: https ://webpack.js.org/concepts/mode/C:\Users\Administrator\cma>webpack you.js today.js Hash: 2ffa3d7e0a8a6e808dda Version: webpack 4.10.2 Time: 156ms Built at: 2018-06-01 21:13:04Asset Size Chunks Chunk Names main.js 1.1 KiB 0 [emitted] main Entrypoint main = main.js [0] ./today.js 0 bytes {0} [built] [1] ./you.js 288 bytes {0} [built] [2] multi ./you.js ./today.js 40 bytes {0} [built]WARNING in configuration The 'mode' option has not been set, webpack will fallback to 'production' for th is value. Set 'mode' option to 'development' or 'production' to enable defaults for each environment. You can also set it to 'none' to disable any default behavior. Learn more: https ://webpack.js.org/concepts/mode/C:\Users\Administrator\cma>

2、錯誤原因

? ? ?沒有設置webpack的模式，是生產還是開發（production or development）

3、解決辦法

? ? ?執行命令：webpack --mode=production或者webpack --mode=development

C:\Users\Administrator>webpack --mode=production Hash: 68029a5423f50b49c81f Version: webpack 4.10.2 Time: 91ms Built at: 2018-06-01 21:18:40ERROR in Entry module not found: Error: Can't resolve './src' in 'C:\Users\Admin istrator'C:\Users\Administrator>

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