Unhandled Rejection (TypeError): Failed to fetch

[kiloppertry]

import React from "react";
import yahooFinance from 'yahoo-finance2';

const Stocks = () => {
const result = yahooFinance.historical('TSLA', { period1: '2022-02-01',period2:'today'});
console.log(result);

return

Stocks

;
};

export default Stocks;

failed:

3 | import yahooFinance from 'yahoo-finance2';
4 |
5 | const Stocks = () => {

6 | const result = yahooFinan

ce.historical('TSLA', { period1: '2022-02-01',period2:'today'});
7 | console.log(result);
8 |
9 | return

Stocks

;

[gadicc]

Hey @kiloppertry

This is failing because you're passing period2 a value of "today" which is not a valid value. Per the historical docs, this should be a date (or a string value that can be passed to new Date(str)). Of course, it mentions also that the default value is today, so you should just leave out period2 entirely to get all history up until the current day. i.e.

yahooFinance.historical('TSLA', { period1: '2022-02-01',period2:'today'});  // won't work
yahooFinance.historical('TSLA', { period1: '2022-02-01' ); // will work

We should probably throw a clearer error if pass a string that can't be turned into a date, and I'll track that in #457.

[kiloppertry]

thank you for your answer ,but


still failed

[gadicc]

Oh, oops, the period2 was the first thing I noticed but looks like there are a bunch of other errors too. Unfortunately I can't see from what you pasted the full error you're getting. Anyways, a few other things:

• Don't forget that it's an async function, so you need to either await it or .then() it and handle that appropriately in your code.
• Are you running this in the browser? Hope you read the note in the README about this (blocked by CORS).
• Don't forget to try...catch (async) or .catch(e) {...} (promise) - it will help you get a better error message too.

Hope that helps!

[kiloppertry]

thank you , I am running in the browser . so its destiney is to fail.

[gadicc]

Ah sorry to hear that, @kiloppertry. Yes, unfortunately there's no simple way to run this in the browser as Yahoo blocks those requests. I hope you'll find an alternative method that be easier and work better. Good luck!