rentgen/util.ts
2021-10-03 09:03:56 +02:00

45 lines
1.2 KiB
TypeScript

import { EventEmitter } from "events";
import { useEffect, useState } from "react";
export type Unpromisify<T> = T extends Promise<infer R> ? R : T;
export type Unarray<T> = T extends Array<infer R> ? R : T;
export type Tab = Unarray<Unpromisify<ReturnType<typeof browser.tabs.query>>>;
export type Request = Parameters<
Parameters<typeof browser.webRequest.onBeforeSendHeaders.addListener>[0]
>[0];
export function getshorthost(host: string) {
return host.split(".").slice(-2).join(".");
}
export function useEmitter(e: EventEmitter) {
const [counter, setCounter] = useState<number>(0);
useEffect(() => {
console.log("useEmitter!");
const callback = () => {
console.log("Detected memory change!");
setCounter((counter) => counter + 1);
console.log("RT:", counter + 1);
};
e.on("change", callback);
return () => {
e.removeListener("change", callback);
};
}, []);
return counter;
}
export function parseCookie(cookie: string): Record<string, string> {
return cookie
.split(";")
.map((l) => l.split("="))
.reduce(
(acc, [key, value]) => ({
...acc,
[key]: value,
}),
{}
);
}