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import fs from 'node:fs';
// Some existing files and directories can be safely ignored when checking if a directory is a valid project directory.
// https://github.com/facebook/create-react-app/blob/d960b9e38c062584ff6cfb1a70e1512509a966e7/packages/create-react-app/createReactApp.js#L907-L934
const VALID_PROJECT_DIRECTORY_SAFE_LIST = [
'.DS_Store',
'.git',
'.gitkeep',
'.gitattributes',
'.gitignore',
'.gitlab-ci.yml',
'.hg',
'.hgcheck',
'.hgignore',
'.idea',
'.npmignore',
'.travis.yml',
'.yarn',
'.yarnrc.yml',
'docs',
'LICENSE',
'mkdocs.yml',
'Thumbs.db',
/\.iml$/,
/^npm-debug\.log/,
/^yarn-debug\.log/,
/^yarn-error\.log/,
];
export function isEmpty(dirPath: string) {
if (!fs.existsSync(dirPath)) {
return true;
}
const conflicts = fs.readdirSync(dirPath).filter((content) => {
return !VALID_PROJECT_DIRECTORY_SAFE_LIST.some((safeContent) => {
return typeof safeContent === 'string' ? content === safeContent : safeContent.test(content);
});
});
return conflicts.length === 0;
}
export function isValidName(projectName: string) {
return /^(?:@[a-z\d\-*~][a-z\d\-*._~]*\/)?[a-z\d\-~][a-z\d\-._~]*$/.test(projectName);
}
export function toValidName(projectName: string) {
if (isValidName(projectName)) return projectName;
return projectName
.trim()
.toLowerCase()
.replace(/\s+/g, '-')
.replace(/^[._]/, '')
.replace(/[^a-z\d\-~]+/g, '-')
.replace(/^-+/, '')
.replace(/-+$/, '');
}
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