class-transformer/types/interfaces/decorator-options/expose-options.interface.d.ts

/**
 * Possible transformation options for the @Expose decorator.
 */
export interface ExposeOptions {
    /**
     * Name of property on the target object to expose the value of this property.
     */
    name?: string;
    /**
     * First version where this property should be exposed.
     *
     * Example:
     * ```ts
     * instanceToPlain(payload, { version: 1.0 });
     * ```
     */
    since?: number;
    /**
     * Last version where this property should be exposed.
     *
     * Example:
     * ```ts
     * instanceToPlain(payload, { version: 1.0 });
     * ```
     */
    until?: number;
    /**
     * List of transformation groups this property belongs to. When set,
     * the property will be exposed only when transform is called with
     * one of the groups specified.
     *
     * Example:
     * ```ts
     * instanceToPlain(payload, { groups: ['user'] });
     * ```
     */
    groups?: string[];
    /**
     * Expose this property only when transforming from plain to class instance.
     */
    toClassOnly?: boolean;
    /**
     * Expose this property only when transforming from class instance to plain object.
     */
    toPlainOnly?: boolean;
}