tachijs/dist/Injector.js

Highly testable dead simple web server written in Typescript

"use strict";
Object.defineProperty(exports, "__esModule", { value: true });
const decorators_1 = require("./decorators");
class Injector {
    constructor(container) {
        this.containerMap = new Map(Object.entries(container));
    }
    instantiate(Constructor) {
        const injectMetaList = decorators_1.getInjectMetaList(Constructor);
        const args = injectMetaList.map(injectMeta => {
            try {
                return this.inject(injectMeta.key);
            }
            catch (error) {
                throw new Error(`${error.message} (While instantiating "${Constructor.name}")`);
            }
        });
        return new Constructor(...args);
    }
    inject(key) {
        if (!this.containerMap.has(key))
            throw new Error(`No service is registered for "${key}" key.`);
        return this.instantiate(this.containerMap.get(key));
    }
}
exports.Injector = Injector;
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