@buka/class-transformer-extra/dist/esm/src/number/to-number.d.ts

class-transformer-extra contains methods that's aren't included in the class-transform package.

import { TransformOptions } from 'class-transformer';
export interface ToNumberTransformOptions extends TransformOptions {
    optional?: boolean;
}
export declare function ToNumber(options?: ToNumberTransformOptions): PropertyDecorator;