@nestjs/class-transformer/cjs/decorators/transform-class-to-class.decorator.js

Fork of the class-transformer package. Proper decorator-based transformation / serialization / deserialization of plain javascript objects to class constructors

"use strict";
Object.defineProperty(exports, "__esModule", { value: true });
exports.TransformClassToClass = void 0;
const ClassTransformer_1 = require("../ClassTransformer");
/**
 * Return the class instance only with the exposed properties.
 *
 * Can be applied to functions and getters/setters only.
 */
function TransformClassToClass(params) {
    return function (target, propertyKey, descriptor) {
        const classTransformer = new ClassTransformer_1.ClassTransformer();
        const originalMethod = descriptor.value;
        descriptor.value = function (...args) {
            const result = originalMethod.apply(this, args);
            const isPromise = !!result &&
                (typeof result === 'object' || typeof result === 'function') &&
                typeof result.then === 'function';
            return isPromise
                ? result.then((data) => classTransformer.classToClass(data, params))
                : classTransformer.classToClass(result, params);
        };
    };
}
exports.TransformClassToClass = TransformClassToClass;
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