class-validator-extended/dist/map/map-unique/map-unique.decorator.js

Additional validators for class-validator.

"use strict";
Object.defineProperty(exports, "__esModule", { value: true });
exports.MAP_UNIQUE = void 0;
exports.MapUnique = MapUnique;
const class_validator_1 = require("class-validator");
const map_unique_predicate_1 = require("./map-unique.predicate");
/** @hidden */
exports.MAP_UNIQUE = 'mapUnique';
/**
 * Checks if the given value is a [Map](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Map)
 * without duplicates with regard to the given projection.
 *
 * #### Example
 * ```typescript
 * // Ensure the map does not include duplicate users.
 * @MapUnique<User>(user => user.id)
 * usersByEmail: Map<string, User>
 * ```
 *
 * @category Map
 * @param projection The function mapping each map entry to the value that is used for the uniqueness check.
 * @param options Generic class-validator options.
 * @typeParam Value The type of the map's values.
 * @typeParam Projection The type returned by `projection`.
 */
function MapUnique(projection, options) {
    return (0, class_validator_1.ValidateBy)({
        name: exports.MAP_UNIQUE,
        validator: {
            validate: (value, _arguments) => (0, map_unique_predicate_1.mapUnique)(value, projection),
            defaultMessage: (0, class_validator_1.buildMessage)(eachPrefix => `${eachPrefix}$property must have unique values`, options),
        },
    }, options);
}