/rates-exchange

Primary LanguageTypeScript

Rates exchange app

See it deployed: https://stevenjob.github.io/rates-exchange/

CircleCI

Tech

  • react, redux and typescript
  • bootstrap, styled-components
  • jest, react-testing-libary
  • CircleCI and github pages

Polls https://openexchangerates.org/ every 10 seconds for active currency pair and user can make mock exchanges.

Setup with 3 mock pockets of 1000 of GBP, USD and EUR

Uses text-mask for input validation

Steps to run locally

get a key from https://openexchangerates.org/ and add to .env.local

npm install

npm run start

Edge cases, performance, things missed

  • There is no handling of errors or loading or setup for the rates, if a request for rates is slow or fails the component will not work correctly.

  • The app is not fully tested, although most of the component tests try to cover the main flow (see exchange.spec.tsx for lots of tests).

  • Used typescript but i cut some corners (using any) as i did not want to spend too much time correcting type definitions.

  • I expect some edge cases that were not covered like very large numbers or very small numbers e.g. 0.01