rentgen/util.ts

79 lines
2.0 KiB
TypeScript

import { EventEmitter } from "events";
import { Dispatch, SetStateAction, 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
): [number, Dispatch<SetStateAction<number>>] {
const [counter, setCounter] = useState<number>(0);
useEffect(() => {
const callback = () => {
setCounter((counter) => counter + 1);
};
e.on("change", callback);
return () => {
e.removeListener("change", callback);
};
}, []);
return [counter, setCounter];
}
export function parseCookie(cookie: string): Record<string, string> {
return cookie
.split(";")
.map((l) => l.split("="))
.reduce(
(acc, [key, value]) => ({
...acc,
[key]: value,
}),
{}
);
}
export async function getTabByID(id: number) {
const tabs = await browser.tabs.query({ currentWindow: true });
return tabs.find((tab) => tab.id == id);
}
export function parseToObject(str: unknown): Record<string, unknown> {
if (typeof str === "string") {
return JSON.parse(str);
} else if (typeof str == "object") {
return str as Record<string, unknown>;
}
}
export function isJSONObject(
str: unknown
): str is Record<string, unknown> | string | number {
try {
return JSON.stringify(parseToObject(str))[0] == "{";
} catch (e) {
return false;
}
}
export function isURL(str: unknown): str is string {
try {
return !!(typeof str === "string" && new URL(str));
} catch (e) {
return false;
}
}
export function hyphenate(str: string): string {
return str.replace(/[_\[A-Z]/g, `${String.fromCharCode(173)}$&`);
}