From 3e0a730d1d96cdd2a4d4d3565fb3bb212c91e165 Mon Sep 17 00:00:00 2001
From: JJ Kasper <jj@jjsweb.site>
Date: Sat, 13 May 2023 00:34:32 -0700
Subject: [PATCH] Update warning

---
 packages/next/src/shared/lib/bloom-filter.ts | 20 +++++++++++++++-----
 1 file changed, 15 insertions(+), 5 deletions(-)

diff --git a/packages/next/src/shared/lib/bloom-filter.ts b/packages/next/src/shared/lib/bloom-filter.ts
index 76be6cfdffaca1..28032d354d96ed 100644
--- a/packages/next/src/shared/lib/bloom-filter.ts
+++ b/packages/next/src/shared/lib/bloom-filter.ts
@@ -19,11 +19,6 @@ export class BloomFilter {
   bitArray: number[]
 
   constructor(numItems: number, errorRate: number) {
-    if (typeof window === 'undefined' && errorRate < 0.01) {
-      console.warn(
-        `Creating filter with error rate less than 1% (0.01) can increase the size dramatically proceed with caution. Received error rate ${errorRate}`
-      )
-    }
     this.numItems = numItems
     this.errorRate = errorRate
     this.numBits = Math.ceil(
@@ -31,6 +26,21 @@ export class BloomFilter {
     )
     this.numHashes = Math.ceil((this.numBits / numItems) * Math.log(2))
     this.bitArray = new Array(this.numBits).fill(0)
+
+    if (typeof window === 'undefined') {
+      if (errorRate < 0.01) {
+        const filterData = JSON.stringify(this.export())
+        const gzipSize = require('next/dist/compiled/gzip-size').sync(
+          filterData
+        )
+
+        if (gzipSize > 1024) {
+          console.warn(
+            `Creating filter with error rate less than 1% (0.01) can increase the size dramatically proceed with caution. Received error rate ${errorRate} resulted in size ${gzipSize} bytes (gzip)`
+          )
+        }
+      }
+    }
   }
 
   static from(items: string[], errorRate = 0.01) {