首次提交

2026-07-13 12:06:16 +08:00
commit e3c810b1a6
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+// Unique ID creation requires a high quality random # generator. In the browser we therefore
+// require the crypto API and do not support built-in fallback to lower quality random number
+// generators (like Math.random()).
+
+var getRandomValues;
+var rnds8 = new Uint8Array(16);
+export default function rng() {
+  // lazy load so that environments that need to polyfill have a chance to do so
+  if (!getRandomValues) {
+    // getRandomValues needs to be invoked in a context where "this" is a Crypto implementation.
+    getRandomValues = typeof crypto !== 'undefined' && crypto.getRandomValues && crypto.getRandomValues.bind(crypto);
+    if (!getRandomValues) {
+      throw new Error('crypto.getRandomValues() not supported. See https://github.com/uuidjs/uuid#getrandomvalues-not-supported');
+    }
+  }
+  return getRandomValues(rnds8);
+}