From dd4d7301bab06bd8bf861f7078ec160ea3bbcff8 Mon Sep 17 00:00:00 2001
From: Spencer <spencertang@google.com>
Date: Tue, 14 Apr 2026 18:26:00 +0000
Subject: [PATCH] fix: remove global string slice to guarantee JSON
 parseability

---
 packages/core/src/telemetry/trace.test.ts | 12 ------------
 packages/core/src/telemetry/trace.ts      |  8 --------
 2 files changed, 20 deletions(-)

diff --git a/packages/core/src/telemetry/trace.test.ts b/packages/core/src/telemetry/trace.test.ts
index 965740d944..e9d2dc47dd 100644
--- a/packages/core/src/telemetry/trace.test.ts
+++ b/packages/core/src/telemetry/trace.test.ts
@@ -124,18 +124,6 @@ describe('truncateForTelemetry', () => {
     );
   });
 
-  it('should enforce a global payload string limit', () => {
-    const obj = {
-      a: 'x'.repeat(100),
-      b: 'y'.repeat(100),
-    };
-    // Let's cap global string length to 50
-    const result = truncateForTelemetry(obj, 100, 100, 4, 50) as string;
-    expect(result.length).toBeGreaterThan(50);
-    expect(result).toContain('...[TRUNCATED: original payload length');
-    expect(result.startsWith('{"a":"xxxx')).toBe(true);
-  });
-
   it('should stringify objects unchanged if within maxLength', () => {
     const obj = { a: 1 };
     expect(truncateForTelemetry(obj, 100)).toBe(JSON.stringify(obj));
diff --git a/packages/core/src/telemetry/trace.ts b/packages/core/src/telemetry/trace.ts
index eff442ea4e..bd9b32c119 100644
--- a/packages/core/src/telemetry/trace.ts
+++ b/packages/core/src/telemetry/trace.ts
@@ -67,7 +67,6 @@ export function truncateForTelemetry(
   maxStringLength = 10000,
   maxArrayLength = 100,
   maxDepth = 4,
-  maxGlobalStringLength = 50000,
 ): AttributeValue | undefined {
   const truncateObj = (v: unknown, depth: number): unknown => {
     if (typeof v === 'string') {
@@ -149,13 +148,6 @@ export function truncateForTelemetry(
   }
 
   const stringified = safeJsonStringify(truncated);
-  if (stringified.length > maxGlobalStringLength) {
-    const graphemes = Array.from(stringified);
-    if (graphemes.length > maxGlobalStringLength) {
-      return (graphemes.slice(0, maxGlobalStringLength).join('') +
-        `...[TRUNCATED: original payload length ${graphemes.length}]`) as AttributeValue;
-    }
-  }
 
   return stringified as AttributeValue;
 }