Safari 14.1 support (#185)

* Safari 14.1 fully supports Penumbra

* Default to 4 workers when `navigator.hardwareConcurrency` is not supported

README.md

@@ -52,13 +52,14 @@
 
 ## Compatibility
 
-|          | .decrypt | .encrypt | .saveZip |
-| -------- | -------: | -------: | -------: |
-| Chrome   |       ✅ |       ✅ |       ✅ |
-| Edge >18 |       ✅ |       ✅ |       ✅ |
-| Safari   |       🐢 |       🐢 |       🟡 |
-| Firefox  |       🐢 |       🐢 |       🟡 |
-| Edge 18  |       ❌ |       ❌ |       ❌ |
+|              | .decrypt | .encrypt | .saveZip |
+| ------------ | -------: | -------: | -------: |
+| Chrome       |       ✅ |       ✅ |       ✅ |
+| Edge >18     |       ✅ |       ✅ |       ✅ |
+| Safari ≥14.1 |       ✅ |       ✅ |       ✅ |
+| Safari <14.1 |       🐢 |       🐢 |       🟡 |
+| Firefox      |       🐢 |       🐢 |       🟡 |
+| Edge 18      |       ❌ |       ❌ |       ❌ |
 
 ✅ = Full support with workers
 

package.json

@@ -1,6 +1,6 @@
 {
   "name": "@transcend-io/penumbra",
-  "version": "5.0.4",
+  "version": "5.0.5",
   "description": "Crypto streams for the browser.",
   "main": "build/main.penumbra.js",
   "types": "ts-build/src/index.d.ts",

src/workers.ts

@@ -124,11 +124,12 @@ function reDispatchEvent(event: Event): void {
 
 // Set data-worker-limit to limit the maximum number of Penumbra workers
 const WORKER_LIMIT = +(script.workerLimit || 16);
+const { hardwareConcurrency } = navigator;
 // Get available processor threads
-const availConcurrency = // Default to 4 threads if nav.hwConcurrency isn't supported
-  (navigator.hardwareConcurrency || 4) -
-  // Reserve one thread for UI renderer to prevent jank
-  1;
+const availConcurrency = hardwareConcurrency
+  ? // Reserve one thread (if hwConcurrency is supported) for UI renderer to prevent jank
+    hardwareConcurrency - 1
+  : 4;
 const maxConcurrency =
   availConcurrency > WORKER_LIMIT ? WORKER_LIMIT : availConcurrency;
 const workers: PenumbraWorker[] = [];