@appolo/inject/lib/methods/definitions/_addDefinition.ts

dependency injection for node js

import {IDefinition} from "../../interfaces/IDefinition";
import {Injector} from "../../inject/inject";

export function _addDefinition(this:Injector,objectId: string, definition: IDefinition): Injector {

    //we have definition and is already override mode so we do nothing
    if (this._definitions[objectId] && this._definitions[objectId].override && !definition.override) {
        return this;
    }

    //we have definition and the new definition is not in override mode so we throw error
    if (this._definitions[objectId] && !definition.override) {
        throw new Error(`Injector:definition id ${objectId} already exists use override decorator`);
    }

    let cloned = Object.assign({}, {id: objectId, args: [], inject: [], alias: [], aliasFactory: []}, definition);

    Object.assign(definition, cloned);

    this._definitions[objectId] = definition;

    return this;
}