chore: update coverage data type

Author: galargh

v-next/hardhat/src/internal/builtin-plugins/coverage/hook-handlers/solidity.ts

@@ -63,7 +63,7 @@ export default async (): Promise<Partial<SolidityHooks>> => ({
                 context.config.paths.root,
                 fsPath,
               );
-              const tag = m.tag.toString("hex");
+              const tag = Buffer.from(m.tag).toString("hex");
               const startLine = lineNumbers[m.startUtf16];
               const endLine = lineNumbers[m.endUtf16 - 1];
               coverageMetadata.push({

v-next/hardhat/src/internal/builtin-plugins/network-manager/edr/types/coverage.ts

@@ -1,3 +1,3 @@
 export interface CoverageConfig {
-  onCollectedCoverageCallback: (coverageData: Buffer[]) => void;
+  onCollectedCoverageCallback: (coverageData: Uint8Array[]) => void;
 }

v-next/hardhat/src/internal/builtin-plugins/network-manager/network-manager.ts

@@ -225,10 +225,12 @@ export class NetworkManagerImplementation implements NetworkManager {
         );
         if (shouldEnableCoverage) {
           coverageConfig = {
-            onCollectedCoverageCallback: (coverageData: Buffer[]) => {
+            onCollectedCoverageCallback: (coverageData: Uint8Array[]) => {
               // NOTE: We cast the tag we receive from EDR to a hex string to
               // make it easier to debug.
-              const tags = coverageData.map((tag) => tag.toString("hex"));
+              const tags = coverageData.map((tag) =>
+                Buffer.from(tag).toString("hex"),
+              );
               void hookManager.runParallelHandlers(
                 "network",
                 "onCoverageData",