@istanbul/inject

@istanbul/inject

Dependency Injection package of istanbul framework.

What Is It?

This package is the inject package of the istanbul framework.

With this package, you can provide some values that you will reuse to inject later.

You don't have to use istanbul framework, @istanbul/inject is a nodejs package.

Installation

npm install @istanbul/inject

or with yarn

yarn add @istanbul/inject

Usage With Global Provider

// main.ts
import { provide } from "@istanbul/inject"

const logger = (...msg: any[]) => {
  console.log(...msg);
}

provide("logger", logger);
provide("city", "istanbul")
provide("population", 15600000)

// anything.ts
import { inject } from "@istanbul/inject"

const logger = inject("logger")
const city = inject("city")
const population = inject("population")

logger("Hello, ", city, " has ", population, " people.")
// Hello, istanbul has 15600000 people.

Usage With Custom Types

import { createInjector } from "@istanbul/inject"

type Product = {
  name: string
  price: number
}

const productInjector = createInjector<Product>();

productInjector.provide("product", {
  name: "iPhone X",
  price: 999999
});

const iphoneX = productInjector.inject("product")