remove js-sha256 dependency, use native hashing function

package-lock.json

@@ -10494,11 +10494,6 @@
         "traverse": "0.4.x"
       }
     },
-    "js-sha256": {
-      "version": "0.9.0",
-      "resolved": "https://registry.npmjs.org/js-sha256/-/js-sha256-0.9.0.tgz",
-      "integrity": "sha512-sga3MHh9sgQN2+pJ9VYZ+1LPwXOxuBJBA5nrR5/ofPfuiJBE2hnjsaN8se8JznOmGLN2p49Pe5U/ttafcs/apA=="
-    },
     "js-tokens": {
       "version": "4.0.0",
       "resolved": "https://registry.npmjs.org/js-tokens/-/js-tokens-4.0.0.tgz",

package.json

@@ -11,7 +11,6 @@
     "babel-loader": "^8.0.6",
     "babel-preset-env": "^1.7.0",
     "concurrently": "^5.1.0",
-    "js-sha256": "^0.9.0",
     "react": "^16.12.0",
     "react-dom": "^16.12.0"
   },

src/content.ts

@@ -544,7 +544,7 @@ function incorrectVideoCheck(videoID?: string, sponsorTime?: SponsorTime): boole
     }
 }
 
-function sponsorsLookup(id: string) {
+async function sponsorsLookup(id: string) {
     video = document.querySelector('video') // Youtube video player
     //there is no video here
     if (video == null) {
@@ -621,7 +621,8 @@ function sponsorsLookup(id: string) {
     // Check for hashPrefix setting
     let getRequest;
     if (Config.config.hashPrefix) {
-        getRequest = utils.asyncRequestToServer('GET', "/api/skipSegments/" + utils.getHash(id, 1).substr(0,4), {
+        const hashPrefix = (await utils.getHash(id, 1)).substr(0, 4);
+        getRequest = utils.asyncRequestToServer('GET', "/api/skipSegments/" + hashPrefix, {
             categories
         });
     } else {

src/utils.ts

@@ -1,6 +1,5 @@
 import Config from "./config";
 import { CategorySelection, SponsorTime, FetchResponse } from "./types";
-import { sha256 } from 'js-sha256';
 
 import * as CompileConfig from "../config.json";
 
@@ -380,17 +379,19 @@ class Utils {
         return typeof(browser) !== "undefined";
     }
 
-    getHash(value: string, times=5000): string {
+    async getHash(value: string, times = 5000): Promise<string> {
         if (times <= 0) return "";
 
+        let hashBuffer = new TextEncoder().encode(value).buffer;
+
         for (let i = 0; i < times; i++) {
-            let hash = sha256.create();
-            hash.update(value);
-            hash.hex();
-            value = hash.toString();
+            hashBuffer = await crypto.subtle.digest('SHA-256', hashBuffer);
         }
 
-        return value;
+        const hashArray = Array.from(new Uint8Array(hashBuffer));
+        const hashHex = hashArray.map(b => b.toString(16).padStart(2, '0')).join('');
+
+        return hashHex;
     }
 
 }