Fix types: returnTransactionObjects param value affects resolve type

CHANGELOG.md

@@ -534,3 +534,5 @@ Released with 1.0.0-beta.37 code base.
 ### Fixed
 -  Fix jsonrpc payload and response types (#4743) (#4761)
 -  Allowed more flexibility in typing the overly constrained `provider.disconnect` function (#4833)
+-  Fix resolve type of getBlock function (#4911)
+

packages/web3-eth/types/index.d.ts

@@ -218,15 +218,24 @@ export class Eth {
     getBlock(blockHashOrBlockNumber: BlockNumber | string): Promise<BlockTransactionString>;
     getBlock(
         blockHashOrBlockNumber: BlockNumber | string,
-        returnTransactionObjects: boolean
+        returnTransactionObjects: false
+    ): Promise<BlockTransactionString>;
+    getBlock(
+        blockHashOrBlockNumber: BlockNumber | string,
+        returnTransactionObjects: true
     ): Promise<BlockTransactionObject>;
     getBlock(
         blockHashOrBlockNumber: BlockNumber | string,
         callback?: (error: Error, block: BlockTransactionString) => void
     ): Promise<BlockTransactionString>;
     getBlock(
         blockHashOrBlockNumber: BlockNumber | string,
-        returnTransactionObjects: boolean,
+        returnTransactionObjects: false,
+        callback?: (error: Error, block: BlockTransactionString) => void
+    ): Promise<BlockTransactionString>;
+    getBlock(
+        blockHashOrBlockNumber: BlockNumber | string,
+        returnTransactionObjects: true,
         callback?: (error: Error, block: BlockTransactionObject) => void
     ): Promise<BlockTransactionObject>;