Use template strings instead of join for speed

packages/util/src/Address.ts

@@ -49,7 +49,7 @@ export class Address {
     return new Address(event.kind, event.pubkey, identifier, relays)
   }
 
-  toString = () => [this.kind, this.pubkey, this.identifier].join(":")
+  toString = () => `${this.kind}:${this.pubkey}:${this.identifier}`
 
   toNaddr = () => naddrEncode(this)
 }

packages/util/src/Events.ts

@@ -101,7 +101,7 @@ const _hasValidSignature = cached<string, boolean, [SignedEvent]>({
   maxSize: 10000,
   getKey: ([e]: [SignedEvent]) => {
     try {
-      return [getEventHash(e), e.sig].join(":")
+      return `${getEventHash(e)}:${e.sig}`
     } catch (err) {
       return "invalid"
     }

packages/util/src/Filters.ts

@@ -71,7 +71,7 @@ export const getFilterId = (filter: Filter) => {
     const v = filter[k as keyof Filter]
     const s = Array.isArray(v) ? v.join(",") : v
 
-    parts.push([k, s].join(":"))
+    parts.push(`${k}:${s}`)
   }
 
   return hash(parts.join("|"))