monstasat
fp-fetch
Functional style, non-throwing utils for data fetching
Installation
To install the stable version:
npm install fp-fetchUsage
Basic example
import { isLeft } from 'fp-ts/lib/Either';
import {
NetworkError,
ParserError,
ResponseError,
fetchJSON
} from 'fp-fetch';
const result = await fetchJSON('http://example.com')();
if (isLeft(result)) {
// handle error here
const { left: error } = result;
if (error instanceof NetworkError) {
console.log(`network error occured, message=${error.message}`);
}
if (error instanceof ParserError) {
console.log(`parser error occured, message=${error.message}`);
}
if (error instanceof ResponseError) {
const { message, body } = error;
console.log(`response error occured, message=${message}, body=${body}`);
}
} else {
// handle ok here
const { right: payload } = result;
console.log(`got ok response, payload=${payload}`);
};