Merge pull request #370 from aminya/performance-polyfill

fix: polyfill performance for crypto randomuuid

package.json

@@ -193,7 +193,8 @@
     "util.types",
     "web-streams-polyfill",
     "timers-browserify",
-    "fs-extra"
+    "fs-extra",
+    "randomuuid-polyfill"
   ],
   "engines": {
     "node": ">=12.x",

src/utils/compat/crypto/index.ts

@@ -3,4 +3,4 @@ export * from "crypto"
 import * as crypto from "crypto"
 export default crypto
 
-export { randomUUID } from "randomuuid-polyfill"
+export { randomUUID } from "./randomuuid.mjs"

src/utils/compat/crypto/randomuuid.mjs

@@ -0,0 +1,31 @@
+// from https://www.npmjs.com/package/randomuuid-polyfill
+
+import { performance } from "perf_hooks"
+
+// Adapted from https://stackoverflow.com/a/8809472/2993077
+if (!global.crypto?.randomUUID) {
+  if (!global.crypto) {
+    global.crypto = {}
+  }
+
+  global.crypto.randomUUID = () => {
+    let date = new Date().getTime()
+    let performanceNow = performance.now() * 1000
+
+    // cspell:disable-next-line
+    return "xxxxxxxx-xxxx-4xxx-yxxx-xxxxxxxxxxxx".replace(/[xy]/g, char => {
+      let random = Math.random() * 16
+      if (date > 0) {
+        random = (date + random) % 16 | 0
+        date = Math.floor(date / 16)
+      } else {
+        random = (performanceNow + random) % 16 | 0
+        performanceNow = Math.floor(performanceNow / 16)
+      }
+      return (char === "x" ? random : (random & 0x3 | 0x8)).toString(16)
+    })
+  }
+}
+
+const randomUUID = global.crypto.randomUUID.bind(global.crypto)
+export { randomUUID }