質問編集履歴
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OSと起動後のエラーメッセ－ジ時追加
test
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File without changes
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test
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@@ -1,5 +1,6 @@
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1
1
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npx create-react-app my-appでReactのアプリを作成しVSCodeで開いて実行しようとしたところ下記のエラーが発生しました。
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2
2
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作成してからコードはいじっておらず原因が分かりませんので教えて下さい。
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3
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+
OSはWindowsです。
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3
4
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```
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5
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Uncaught SyntaxError c:\Users\デスクトップ\作業用フォルダー\react\my-app\src\App.js:1
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import logo from './logo.svg';
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@@ -21,4 +22,26 @@
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C:\Program Files\nodejs\node.exe .\src\App.js
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Uncaught SyntaxError SyntaxError: Unexpected token '<'
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```
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25
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+
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26
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npm startを実行したところサーバーは起動したのですがhttp://localhost:3000/を開いたら画面に下記のようなメッセージがでてきました。
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27
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```
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28
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The extension in the request is mandatory for it to be fully specified.
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29
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Add the extension to the request.
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24
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-
n
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30
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ERROR in ./src/index.js 8:0-24
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Module not found: Error: Can't resolve './App' in 'C:\Users\デスクトップ\作業用フォルダー\react\my-app\src'
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32
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Did you mean 'App.js'?
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33
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BREAKING CHANGE: The request './App' failed to resolve only because it was resolved as fully specified
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34
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(probably because the origin is strict EcmaScript Module, e. g. a module with javascript mimetype, a '*.mjs' file, or a '*.js' file where the package.json contains '"type": "module"').
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35
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The extension in the request is mandatory for it to be fully specified.
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36
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Add the extension to the request.
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37
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38
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ERROR in ./src/index.js 9:0-48
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39
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Module not found: Error: Can't resolve './reportWebVitals' in 'C:\Users\デスクトップ\作業用フォルダー\react\my-app\src'
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40
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Did you mean 'reportWebVitals.js'?
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41
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BREAKING CHANGE: The request './reportWebVitals' failed to resolve only because it was resolved as fully specified
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42
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(probably because the origin is strict EcmaScript Module, e. g. a module with javascript mimetype, a '*.mjs' file, or a '*.js' file where the package.json contains '"type": "module"').
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43
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The extension in the request is mandatory for it to be fully specified.
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44
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Add the extension to the request.
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45
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46
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webpack compiled with 2 errors
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47
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```
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