hrtyy.dev

2022/02/26

麻雀君

TypeScriptの型だけで、麻雀の点数計算を行う

2022/01/19

Use enum like literal type.

OpenAPI is a tool for schema first development. They serves several generators for typescript, like typescript-axios. Enum is supported, but not literal type. I will introduce tips using enum as a literal type.

2021/12/02

First Step of Testing React Form.

I want to write test codes for React forms. 'react-hook-form' is used in this React app. I will test it with 'jest' and 'testing-library'.

2021/09/29

TestContainer testing with Jest, NodeJS.

Testing NodeJS application connects to PostgreSQL with Docker, Jest and TestContainer.

2021/04/01

Implementing Video Cropping to size of Preview.

Implementation cropping video to the size of preview for image processing, like QR Reading or OCR with captureDevicePointConverted API.

2021/03/23

React.Children API

Code reading of React.Children API

2021/03/22

Hello World

Tech blog with Gatsby.js

2021/03/22

Typescript Memo

Memo for type techniques of Typescript.