fix(v4-sdk): swap permission check (#433)

dianakocsis · web-flow · commit 825d1b8dc543 · 2025-11-18T14:12:06.000-08:00
diff --git a/sdks/v4-sdk/src/utils/hook.ts b/sdks/v4-sdk/src/utils/hook.ts
@@ -97,7 +97,10 @@ export class Hook {
   }
 
   private static _hasPermission(address: string, hookOption: HookOptions) {
-    return !!(parseInt(address, 16) & (1 << hookFlagIndex[hookOption]))
+    // Use only the last 4 bytes (32 bits) to avoid JavaScript precision issues
+    // All hook flags are in bits 0-13, which fit comfortably in 32 bits
+    const last4Bytes = '0x' + address.slice(-8)
+    return !!(parseInt(last4Bytes, 16) & (1 << hookFlagIndex[hookOption]))
   }
 
   private static _checkAddress(address: string) {

Original file line number	Diff line number	Diff line change
`@@ -97,7 +97,10 @@ export class Hook {`
`97`	`97`	`}`
`98`	`98`
`99`	`99`	`private static _hasPermission(address: string, hookOption: HookOptions) {`
`100`		`- return !!(parseInt(address, 16) & (1 << hookFlagIndex[hookOption]))`
	`100`	`+ // Use only the last 4 bytes (32 bits) to avoid JavaScript precision issues`
	`101`	`+ // All hook flags are in bits 0-13, which fit comfortably in 32 bits`
	`102`	`+ const last4Bytes = '0x' + address.slice(-8)`
	`103`	`+ return !!(parseInt(last4Bytes, 16) & (1 << hookFlagIndex[hookOption]))`
`101`	`104`	`}`
`102`	`105`
`103`	`106`	`private static _checkAddress(address: string) {`