Fixes node runtime error

Eric Amodio · Eric Amodio · commit 28ea0f0aaa9b · 2020-06-29T03:29:19.000-04:00
diff --git a/extensions/github-browser/src/sha1.ts b/extensions/github-browser/src/sha1.ts
@@ -8,15 +8,22 @@
 const textDecoder = new TextDecoder();
 const textEncoder = new TextEncoder();
 
-declare const WEBWORKER: boolean;
+declare let WEBWORKER: boolean;
 
 export async function sha1(s: string | Uint8Array): Promise<string> {
-	if (WEBWORKER) {
-		const hash = await globalThis.crypto.subtle.digest({ name: 'sha-1' }, typeof s === 'string' ? textEncoder.encode(s) : s);
-		// Use encodeURIComponent to avoid issues with btoa and Latin-1 characters
-		return globalThis.btoa(encodeURIComponent(textDecoder.decode(hash)));
-	}
-	else {
-		return (await import('crypto')).createHash('sha1').update(s).digest('base64');
+	while (true) {
+		try {
+			if (WEBWORKER) {
+				const hash = await globalThis.crypto.subtle.digest({ name: 'sha-1' }, typeof s === 'string' ? textEncoder.encode(s) : s);
+				// Use encodeURIComponent to avoid issues with btoa and Latin-1 characters
+				return globalThis.btoa(encodeURIComponent(textDecoder.decode(hash)));
+			} else {
+				return (await import('crypto')).createHash('sha1').update(s).digest('base64');
+			}
+		} catch (ex) {
+			if (ex instanceof ReferenceError) {
+				(global as any).WEBWORKER = false;
+			}
+		}
 	}
 }
