// Stolen from attr-accept https://github.com/okonet/attr-accept export default function (file: File, acceptedFiles: string | string[]): boolean { if (file && acceptedFiles) { const acceptedFilesArray = Array.isArray(acceptedFiles) ? acceptedFiles : acceptedFiles.split(',') const fileName = file.name || '' const mimeType = file.type || '' const baseMimeType = mimeType.replace(/\/.*$/, '') return acceptedFilesArray.some((type): boolean => { const validType = type.trim() if (validType.charAt(0) === '.') { return fileName.toLowerCase().endsWith(validType.toLowerCase()) } else if (validType.endsWith('/*')) { // This is something like a image/* mime type return baseMimeType === validType.replace(/\/.*$/, '') } return mimeType === validType }) } return true }