Promise fetcher

28 February 2020 — Written by Mitesh Patel

Helper method for promise fetch. which expects promise as an argument

	// Helper method to handle error and expact only error or result.
	export const createFetcher = promiseFunc => {
	return {
	read: arg => {
	try {
	return promiseFunc(arg)
	.then(response => {
	if (!response) {
	return {error: 'error!'};
	}
	if (typeof response.data !== 'object') {
	return {error: 'error!'};
	}

	if (!response.data.error && response.data.error) {
	console.error(cart_result.error_message);
	return {error: 'error!'};
	}
	return response.data;
	},
	reject => {
	return {error: reject};
	});
	}
	catch (error) {
	return new Promise(
	resolve => resolve({error: error})
	);
	}
	}
	}
	}

	// API promise
	export const fetchApiCall = arg => {
	const GET_URL = `https://api.com/some/fake/request/${arg.id}/${arg.name}`;
	return Axios.get(GET_URL);
	};

	// Usage:
	makeApiCall = () => {
	const apiFetcher = createFetcher(
	fetchApiCall
	);

	let apirequest = apiFetcher.read({
	id: 1,
	name: 'something'
	});
	apirequest.then(
	response => {
	if (typeof response.error === 'undefined') {
	this.setState({updatestate})
	}
	}
	);
	}

view raw Promise-fetcher.js hosted with ❤ by GitHub