refactor!(eth-json-rpc-middleware): Migrate to JsonRpcEngineV2

eslint-warning-thresholds.json

@@ -154,7 +154,6 @@
     "@typescript-eslint/no-explicit-any": 1
   },
   "packages/eth-json-rpc-middleware/src/block-cache.ts": {
-    "@typescript-eslint/no-explicit-any": 1,
     "jsdoc/require-jsdoc": 1,
     "no-restricted-syntax": 1
   },
@@ -165,11 +164,10 @@
     "jest/expect-expect": 2
   },
   "packages/eth-json-rpc-middleware/src/block-ref.ts": {
-    "jsdoc/require-jsdoc": 1
+    "jsdoc/match-description": 1
   },
   "packages/eth-json-rpc-middleware/src/block-tracker-inspector.ts": {
-    "jsdoc/match-description": 1,
-    "jsdoc/require-jsdoc": 1
+    "jsdoc/match-description": 2
   },
   "packages/eth-json-rpc-middleware/src/fetch.test.ts": {
     "jsdoc/match-description": 1
@@ -178,8 +176,7 @@
     "jsdoc/match-description": 1
   },
   "packages/eth-json-rpc-middleware/src/inflight-cache.ts": {
-    "@typescript-eslint/no-explicit-any": 1,
-    "jsdoc/require-jsdoc": 4
+    "jsdoc/match-description": 4
   },
   "packages/eth-json-rpc-middleware/src/methods/wallet-request-execution-permissions.ts": {
     "jsdoc/require-jsdoc": 1
@@ -188,7 +185,7 @@
     "jsdoc/require-jsdoc": 1
   },
   "packages/eth-json-rpc-middleware/src/providerAsMiddleware.ts": {
-    "jsdoc/require-jsdoc": 1
+    "jsdoc/require-jsdoc": 2
   },
   "packages/eth-json-rpc-middleware/src/retryOnEmpty.test.ts": {
     "jsdoc/match-description": 3
@@ -215,7 +212,6 @@
     "jsdoc/require-jsdoc": 4
   },
   "packages/eth-json-rpc-middleware/src/wallet.ts": {
-    "@typescript-eslint/no-explicit-any": 2,
     "@typescript-eslint/prefer-nullish-coalescing": 5,
     "jsdoc/match-description": 3,
     "jsdoc/require-jsdoc": 12
@@ -226,7 +222,7 @@
   },
   "packages/eth-json-rpc-middleware/test/util/helpers.ts": {
     "@typescript-eslint/no-explicit-any": 5,
-    "jsdoc/match-description": 11
+    "jsdoc/match-description": 10
   },
   "packages/eth-json-rpc-provider/src/safe-event-emitter-provider.test.ts": {
     "import-x/namespace": 1

packages/eth-json-rpc-middleware/CHANGELOG.md

@@ -9,6 +9,9 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 
 ### Changed
 
+- **BREAKING:** Migrate to `JsonRpcEngineV2` ([#6976](https://github.com/MetaMask/core/pull/6976))
+  - Migrates all middleware from `JsonRpcEngine` to `JsonRpcEngineV2`.
+  - To continue using this package with the legacy `JsonRpcEngine`, use the `asLegacyMiddleware` backwards compatibility function.
 - Migrate all uses of `interface` to `type` ([#6885](https://github.com/MetaMask/core/pull/6885))
 
 ## [21.0.0]