GuardsDOM Guards
Check FileUpload
Checks if a value is a FileUpload object.
isFileUpload
Checks if a value is a FileUpload object, commonly used in libraries like FilePond or Ant Design Upload.
Function Signature
isFileUpload(value: unknown): value is FileUploadType Definition
/** * Represents a file upload operation, commonly used in libraries like `FilePond` or `Ant Design Upload`. */
interface FileUpload {
/** The primary file being uploaded. */
file: File | CustomFile;
/** The list of files associated with the upload. */
fileList: CustomFile[];
}Validation Rules
- Must be an object
- Must have either:
fileproperty that is File or CustomFilefileListproperty that is CustomFile[]
Example
const upload = {
file: customFile,
fileList: [customFile1, customFile2]
};
isFileUpload(upload); // trueLast updated: Tue, May 26, 2026 04:14:18PM (UTC)