wb.protection

isProtected(): Promise<boolean>;

Check if the workbook structure is currently protected.

getOptions(): Promise<WorkbookProtectionOptions | null>;

Get the current protection options, or null if the workbook is not protected.

protect(password?: string, options?: Partial<WorkbookProtectionOptions>): Promise<void>;

Protect workbook structure with optional password and options.

unprotect(password?: string): Promise<boolean>;

Unprotect the workbook. Returns true if successful (password matches).