Getting Started with TypeScript and Apollo

Getting Started with TypeScript and Apollo

Even though Apollo Client and React Apollo are both written in TypeScript. Getting started with TypeScript and Apollo. This is a follow up to a similar post on using Flow and Apollo which can be found here. When the Apollo team started out to build a flexible and incrementally adoptable GraphQL client, one of the early discussions centered around static typing for the library code.

This is a follow up to a similar post on using Flow and Apollo which can be found  here.

When the Apollo team started out to build a flexible and incrementally adoptable GraphQL client, one of the early  discussions centered around static typing for the library code. Since the library deals with a complex data types (like the parsed abstract syntax tree of a GraphQL operation), it seemed like making the code type safe was a needed addition.

The team investigated both Flow and TypeScript, and ultimately went with TypeScript for its active development, editor integration, and strong tooling. It’s been a huge help ever since.

Close, but not enough

Even though Apollo Client and React Apollo are both written in TypeScript, the actual type usage for application developers was not as strong as it should have been. In many places, React Apollo used either any, essentially bypassing static types, or left types off all together where allowed.

Luckily, thanks to the efforts of  Ian Ker-Seymer, these shortcomings were brought to the attention of the Apollo team. With his help, application developers can opt in to much stronger TypeScript checking of their React apps!

Getting Started

This article will follow the same progression as the article on Flow , and it also assumes you already have TypeScript configured in your project. If you don’t, check out this  great starter tooling from Microsoft.

typescript

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