nralcm/common/functions/circular-injection.js

This is a framework based on NodeJs to manage rest api request lifecycle

"use strict";
Object.defineProperty(exports, "__esModule", { value: true });
const _1 = require(".");
require("reflect-metadata/Reflect");
/**
 * Method to inject dependency
 * @param target target objectto inject dependency
 * @param source source object which will hold dependency object
 */
function circularInjection(target, source) {
    const constructorParameters = _1.getConstructorParameters(target);
    if (constructorParameters && constructorParameters.length > 0) {
        const constructorParameterTypes = Reflect.getMetadata("design:paramtypes", target);
        if (constructorParameterTypes && constructorParameterTypes.length === constructorParameters.length) {
            if (constructorParameterTypes && constructorParameterTypes.length > 0) {
                constructorParameterTypes.forEach((val, index) => {
                    source[constructorParameters[index]] = new val();
                });
            }
        }
        else if (constructorParameters.length !== 0) {
            throw new Error("Unable to resolve dependency. Use Repository decorator to inject dependecy in " + target.name);
        }
    }
}
exports.circularInjection = circularInjection;