w does not support null values

This issue has been tracked since 2022-11-19.

Consider the following modified example from arrow-js.com:

import { r, w } from "@arrow-js/core";

type Data = {
	price: number | null;
	quantity: number;
	logTotal: boolean;
};

const data = r<Data>({
	price: null,
	quantity: 10,
	logTotal: true,
});

function total() {
	if (data.logTotal && data.price !== null) {
		console.log(`Total: ${data.price * data.quantity}`);
	}
}

w(total);

data.price = 35;

Executing the above yields:

TypeError: null is not an object (evaluating 'e.$on')

justin-schroeder wrote this answer on 2022-11-19

Yea — shouldn't act that way.

RafalKornel wrote this answer on 2022-11-19

Fixed in #14

justin-schroeder wrote this answer on 2022-11-22

This should be fixed now in alpha.2

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More Details About Repo

Owner Name	justin-schroeder
Repo Name	arrow-js
Full Name	justin-schroeder/arrow-js
Language	TypeScript
Created Date	2022-11-08
Updated Date	2023-03-25
Star Count	1238
Watcher Count	21
Fork Count	22
Issue Count	7

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