rename all *.js files containing React markup to *.jsx

renameReactJsToJsx.sh

# finds all *.js files that have either `</` or `/>` tags in them and renames them to *.jsx
find ./src -type f -name '*.js' -not -name '*.jsx' -not -name '*.ejs' -exec bash -c 'grep -l -E "</|/>" "$0"' {} \; -exec bash -c 'mv "$0" "${0%.js}.jsx"' {} \;

Us poor windows users can use the following powershell command:

Get-ChildItem -Path ./src -Filter *.js -Recurse | Where-Object { 
    $_.Name -notlike '*.jsx' -and $_.Name -notlike '*.ejs' 
} | ForEach-Object {
    $fileContent = Get-Content $_.FullName
    if ($fileContent -match '</|/>') {
        $newFileName = $_.FullName -replace '\.js$', '.jsx'
        Rename-Item -Path $_.FullName -NewName $newFileName
    }
}

(The code above is ai generated but worked flawlessly for me. The matching logic should be the same as in the original bash script.)