Bug 1875340 - use JavaScript's DecompressionStream instead of 'pako' …

…package

package.json

@@ -41,7 +41,6 @@
     "mobx": "6.10.2",
     "moment": "2.29.4",
     "numeral": "2.0.6",
-    "pako": "2.0.4",
     "prop-types": "15.7.2",
     "query-string": "7.0.1",
     "react": "17.0.2",

ui/helpers/gzip.js

@@ -1,8 +1,8 @@
-import { inflate } from 'pako';
-
-export const unGzip = async (binData) => {
-  const decompressed = await inflate(binData, { to: 'string' });
-  return JSON.parse(decompressed);
-};
-
-export default unGzip;
+export default async function unGzip(blob) {
+  const decompressionStream = new DecompressionStream('gzip');
+  const decompressedStream = blob.stream().pipeThrough(decompressionStream);
+  const payloadText = await (
+    await new Response(decompressedStream).blob()
+  ).text();
+  return JSON.parse(payloadText);
+}

ui/job-view/pushes/Push.jsx

@@ -79,8 +79,7 @@ const fetchGeckoDecisionArtifact = async (project, revision, filePath) => {
   if (url.endsWith('.gz')) {
     if ([200, 303, 304].includes(response.status)) {
       const blob = await response.blob();
-      const binData = await blob.arrayBuffer();
-      artifactContents = await decompress(binData);
+      artifactContents = await decompress(blob);
     }
   } else if (url.endsWith('.json')) {
     if ([200, 303, 304].includes(response.status)) {