Error is:
G:\ReactProj\my-app\node_modules\react-scripts\scripts\utils\verifyTypeScriptSetup.js:239 appTsConfig.compilerOptions[option] = value; ^ TypeError: Cannot assign to read only property 'jsx' of object '#' at verifyTypeScriptSetup (G:\ReactProj\my-app\node_modules\react-scripts\scripts\utils\verifyTypeScriptSetup.js:239:43) at Object. (G:\ReactProj\my-app\node_modules\react-scripts\scripts\start.js:31:1)
Sharing my error log
0 info it worked if it ends with ok
1 verbose cli [
1 verbose cli 'C:\\Program Files\\nodejs\\node.exe',
1 verbose cli 'C:\\Users\\lionh\\AppData\\Roaming\\npm\\node_modules\\npm\\bin\\npm-cli.js',
1 verbose cli 'start'
1 verbose cli ]
2 info using [email protected]
3 info using [email protected]
4 verbose run-script [ 'prestart', 'start', 'poststart' ]
5 info lifecycle [email protected]~prestart: [email protected]
6 info lifecycle [email protected]~start: [email protected]
7 verbose lifecycle [email protected]~start: unsafe-perm in lifecycle true
8 verbose lifecycle [email protected]~start: PATH: C:\Users\lionh\AppData\Roaming\npm\node_modules\npm\node_modules\npm-lifecycle\node-gyp-bin;G:\ReactProj\my-app\node_modules\.bin;C:\Windows\system32;C:\Windows;C:\Windows\System32\Wbem;C:\Windows\System32\WindowsPowerShell\v1.0\;C:\Windows\System32\OpenSSH\;C:\Program Files\dotnet\;C:\Program Files\Microsoft SQL Server\130\Tools\Binn\;C:\Program Files\Microsoft SQL Server\Client SDK\ODBC\170\Tools\Binn\;C:\Program Files (x86)\Microsoft SQL Server\150\Tools\Binn\;C:\Program Files\Microsoft SQL Server\150\Tools\Binn\;C:\Program Files\Microsoft SQL Server\150\DTS\Binn\;C:\Program Files (x86)\Microsoft SQL Server\150\DTS\Binn\;C:\Program Files\Azure Data Studio\bin;C:\Program Files\nodejs\;C:\Users\lionh\AppData\Local\Microsoft\WindowsApps;C:\Users\lionh\.dotnet\tools;C:\Program Files\Azure Data Studio\bin;C:\Users\lionh\AppData\Local\Programs\Microsoft VS Code\bin;C:\Users\lionh\AppData\Roaming\npm
9 verbose lifecycle [email protected]~start: CWD: G:\ReactProj\my-app
10 silly lifecycle [email protected]~start: Args: [ '/d /s /c', 'react-scripts start' ]
11 silly lifecycle [email protected]~start: Returned: code: 1 signal: null
12 info lifecycle [email protected]~start: Failed to exec start script
13 verbose stack Error: [email protected] start: `react-scripts start`
13 verbose stack Exit status 1
13 verbose stack at EventEmitter.<anonymous> (C:\Users\lionh\AppData\Roaming\npm\node_modules\npm\node_modules\npm-lifecycle\index.js:332:16)
13 verbose stack at EventEmitter.emit (node:events:329:20)
13 verbose stack at ChildProcess.<anonymous> (C:\Users\lionh\AppData\Roaming\npm\node_modules\npm\node_modules\npm-lifecycle\lib\spawn.js:55:14)
13 verbose stack at ChildProcess.emit (node:events:329:20)
13 verbose stack at maybeClose (node:internal/child_process:1055:16)
13 verbose stack at Process.ChildProcess._handle.onexit (node:internal/child_process:288:5)
14 verbose pkgid [email protected]
15 verbose cwd G:\ReactProj\my-app
16 verbose Windows_NT 10.0.19042
17 verbose argv "C:\\Program Files\\nodejs\\node.exe" "C:\\Users\\lionh\\AppData\\Roaming\\npm\\node_modules\\npm\\bin\\npm-cli.js" "start"
18 verbose node v15.2.0
19 verbose npm v6.14.8
20 error code ELIFECYCLE
21 error errno 1
22 error [email protected] start: `react-scripts start`
22 error Exit status 1
23 error Failed at the [email protected] start script.
23 error This is probably not a problem with npm. There is likely additional logging output above.
24 verbose exit [ 1, true ]
and my tsconfig.json is
{
"compilerOptions": {
"target": "es5",
"lib": [
"dom",
"dom.iterable",
"esnext"
],
"allowJs": true,
"skipLibCheck": true,
"esModuleInterop": true,
"allowSyntheticDefaultImports": true,
"strict": true,
"forceConsistentCasingInFileNames": true,
"noFallthroughCasesInSwitch": true,
"module": "esnext",
"moduleResolution": "node",
"resolveJsonModule": true,
"isolatedModules": true,
"noEmit": true,
"jsx": "react-jsx",
},
"include": [
"src"
]
}
