rentgen/util.ts

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import { EventEmitter } from "events";
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import { Dispatch, SetStateAction, useEffect, useState } from "react";
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import Memory from "./memory";
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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 = {
cookieStoreId?: string;
documentUrl?: string; // RL of the document in which the resource will be loaded. For example, if the web page at "https://example.com" contains an image or an iframe, then the documentUrl for the image or iframe will be "https://example.com". For a top-level document, documentUrl is undefined.
frameId: number;
incognito?: boolean;
method: string;
originUrl: string;
parentFrameId: number;
proxyInfo?: {
host: string;
port: number;
type: string;
username: string;
proxyDNS: boolean;
failoverTimeout: number;
};
requestHeaders?: { name: string; value?: string; binaryValue?: number[] }[];
requestId: string;
tabId: number;
thirdParty?: boolean;
timeStamp: number;
type: string;
url: string; // the target of the request;
urlClassification?: { firstParty: string[]; thirdParty: string[] };
};
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export function getshorthost(host: string) {
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return host
.replace(/^.*:\/\//, "")
.replace(/\/.*$/, "")
.split(".")
.slice(-2)
.join(".");
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}
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export function useEmitter(
e: EventEmitter
): [number, Dispatch<SetStateAction<number>>] {
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const [counter, setCounter] = useState<number>(0);
useEffect(() => {
const callback = () => {
setCounter((counter) => counter + 1);
};
e.on("change", callback);
return () => {
e.removeListener("change", callback);
};
}, []);
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return [counter, setCounter];
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}
export function parseCookie(cookie: string): Record<string, string> {
return cookie
.split(";")
.map((l) => l.split("="))
.reduce(
(acc, [key, value]) => ({
...acc,
[key]: value,
}),
{}
);
}
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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, `${String.fromCharCode(173)}$&`);
}
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export function unique<T>(array: T[]): Array<T> {
return Array.from(new Set<T>(array));
}
export function allSubhosts(host: string) {
const parts = host.split(".");
const result = [];
for (let i = 0; i < parts.length - 2; i++) {
result.push(parts.slice(i).join("."));
}
return result;
}
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export function reduceConcat<T>(a: T[], b: T[]): T[] {
return a.concat(b);
}
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export function getDate() {
const d = new Date();
return `${d.getFullYear()}-${(d.getMonth() + 1)
.toString()
.padStart(2, "0")}-${d.getDate().toString().padStart(2, "0")}`;
}
export function toBase64(file: File): Promise<string> {
return new Promise((resolve) => {
const FR = new FileReader();
FR.addEventListener("load", (e) => {
resolve(e.target.result as string);
});
FR.readAsDataURL(file);
});
}