Angular 2 — Component Lifecycle Hooks

How to create custom type definitions in Angular 2?

How to create custom type definitions in Angular 2?

What is Typing?
Typings is the simple way to manage and install TypeScript definitions. It uses “typings.json”, which can resolve to the Typings Registry, NPM, HTTP and local files.

Custom Type Definitions:-

In Angular 2, when we including 3rd party modules. We also need to include the type definition for this module and if they do not provide one within the modules.

If you want to try to install it with typings,

typings install node save

If we cannot find the type definition in the registry, we can make an extensive definition in this file for now.

For example as,

declare module myModule {
   export function toDo(value: string): string;

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