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Check for presence of folders before continuing eject. #951

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Merged
gaearon merged 1 commit into from
Oct 28, 2016
Merged

Check for presence of folders before continuing eject. #951

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38 changes: 24 additions & 14 deletions packages/react-scripts/scripts/eject.js
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Original file line number Diff line number Diff line change
Expand Up @@ -30,6 +30,25 @@ prompt(

var ownPath = path.join(__dirname, '..');
var appPath = path.join(ownPath, '..', '..');

function verifyAbsent(file) {
if (fs.existsSync(path.join(appPath, file))) {
console.error(
'`' + file + '` already exists in your app folder. We cannot ' +
'continue as you would lose all the changes in that file or directory. ' +
'Please move or delete it (maybe make a copy for backup) and run this ' +
'command again.'
);
process.exit(1);
}
}

var folders = [
'config',
path.join('config', 'jest'),
'scripts'
];

var files = [
path.join('config', 'env.js'),
path.join('config', 'paths.js'),
Expand All @@ -44,22 +63,13 @@ prompt(
];

// Ensure that the app folder is clean and we won't override any files
files.forEach(function(file) {
if (fs.existsSync(path.join(appPath, file))) {
console.error(
'`' + file + '` already exists in your app folder. We cannot ' +
'continue as you would lose all the changes in that file or directory. ' +
'Please delete it (maybe make a copy for backup) and run this ' +
'command again.'
);
process.exit(1);
}
});
folders.forEach(verifyAbsent);
files.forEach(verifyAbsent);

// Copy the files over
fs.mkdirSync(path.join(appPath, 'config'));
fs.mkdirSync(path.join(appPath, 'config', 'jest'));
fs.mkdirSync(path.join(appPath, 'scripts'));
folders.forEach(function(folder) {
fs.mkdirSync(path.join(appPath, folder))
});

console.log();
console.log(cyan('Copying files into ' + appPath));
Expand Down