Changelog

All notable changes to this project will be documented in this file.

The format is based on Keep a Changelog, and this project adheres to Semantic Versioning.

Unreleased

10.0.2

Changed

Bump @metamask/utils from ^10.0.0 to ^11.0.1 (#5080)
Bump @metamask/rpc-errors from ^7.0.0 to ^7.0.2 (#5080)

10.0.1

Changed

Bump @metamask/utils from ^9.1.0 to ^10.0.0 (#4831)

10.0.0

Fixed

BREAKING: Bump @metamask/rpc-errors from ^6.3.1 to ^7.0.0 (#4773)
- This modifies the top-level error message for serialized internal JSON-RPC errors to include the actual error message, instead of the generic Internal JSON-RPC Error. string.

9.0.3

Changed

Bump TypeScript from ~5.0.4 to ~5.2.2 (#4576, #4584)

Fixed

Produce and export ESM-compatible TypeScript type declaration files in addition to CommonJS-compatible declaration files (#4648)
- Previously, this package shipped with only one variant of type declaration files, and these files were only CommonJS-compatible, and the exports field in package.json linked to these files. This is an anti-pattern and was rightfully flagged by the "Are the Types Wrong?" tool as "masquerading as CJS". All of the ATTW checks now pass.
Remove chunk files (#4648).
- Previously, the build tool we used to generate JavaScript files extracted common code to "chunk" files. While this was intended to make this package more tree-shakeable, it also made debugging more difficult for our development teams. These chunk files are no longer present.

9.0.2

Changed

Bump TypeScript version to ~5.0.4 and set moduleResolution option to Node16 (#3645)
Bump @metamask/utils from ^9.0.0 to ^9.1.0 (#4529)

9.0.1

Changed

Bump @metamask/rpc-errors from 6.2.1 to ^6.3.1 (#4516)
Bump @metamask/utils from ^8.3.0 to ^9.0.0 (#4516)

9.0.0

Changed

BREAKING: Bump minimum Node version to 18.18 (#3611)

8.0.2

Changed

Widen the error parameter of JsonRpcEngineReturnHandler, JsonRpcEngineEndCallback function types from JsonRpcEngineCallbackError to unknown (#3906)
Narrow the function parameters req, callback of the last overload of the handle method of the JsonRpcEngine class (#3906)
- This applies to the overload with two function parameters, one required and one optional, and no generic parameters.
- req is narrowed from unknown to (JsonRpcRequest | JsonRpcNotification)[] | JsonRpcRequest | JsonRpcNotification.
- callback is narrowed from any to (error: unknown, response: never) => void.
Bump TypeScript version to ~4.9.5 (#4084)

8.0.1

Fixed

Fix types field in package.json (#4047)

8.0.0

Added

BREAKING: Add ESM build (#3998)
- It's no longer possible to import files from ./dist directly.

7.3.3

Changed

Bump @metamask/rpc-errors to ^6.2.1 (#3954)

7.3.2

Changed

Bump @metamask/utils to ^8.3.0 (#3769)

7.3.1

Changed

There are no consumer-facing changes to this package. This version is a part of a synchronized release across all packages in our monorepo.

7.3.0

Added

Migrate @metamask/json-rpc-engine into the core monorepo (#1895)

Changed

Bump @metamask/utils from ^8.1.0 to ^8.2.0 (#1895)
Bump @metamask/rpc-errors from ^6.0.0 to ^6.1.0 (#1882)
Bump @metamask/auto-changelog from 3.4.2 to 3.4.3 (#1997)

7.2.0

Added

Applied eslint rules from core monorepo (#172)

7.1.1

Changed

Bumped @metamask/utils from ^5.0.2 to ^8.1.0 #158 (#162)
Bumped @metamask/rpc-errors from ^5.0.0 to ^6.0.0 (#162)

7.1.0

Changed

Bumped @metamask/safe-event-emitter from ^2.0.0 to ^3.0.0 (#148)
Bumped @metamask/utils from ^5.0.1 to ^5.0.2 (#151)

Fixed

Fixed handling of empty batch array in requests (#153)

7.0.0

Added

Added JSON-RPC notification handling (#104)
Added destroy method (#106)

Changed

BREAKING: Require a minimum Node version of 16 (#139)
BREAKING: Use @metamask/utils types (#105)
- The JSON-RPC engine and all middleware now use @metamask/utils JSON-RPC types
(BREAKING) Return a null instead of undefined response id for malformed request objects (#91)
- This is very unlikely to be breaking in practice, but the behavior could have been relied on.
Change package name to @metamask/json-rpc-engine (#139)
Use @metamask/rpc-errors (#138)

6.1.0 - 2020-11-20

Added

Add PendingJsonRpcResponse interface for use in middleware (#75)

Changed

Use async/await and try/catch instead of Promise methods everywhere (#74)
- Consumers may notice improved stack traces on certain platforms.

6.0.0 - 2020-11-19

Added

Add docstrings for public JsonRpcEngine methods (#70)

Changed

(BREAKING) Refactor exports (#69)
- All exports are now named, and available via the package entry point.
- All default exports have been removed.
(BREAKING) Convert asMiddleware to instance method (#69)
- The asMiddleware export has been removed.
(BREAKING) Add runtime typechecks to JsonRpcEngine.handle(), and error responses if they fail (#70)
- Requests will now error if:
  - The request is not a plain object, or if the method property is not a string. Empty strings are allowed.
  - A next middleware callback is called with a truthy, non-function parameter.
Migrate to TypeScript (#69)
Hopefully improve stack traces by removing uses of Promise.then and .catch internally (#70)
Make some internal JsonRpcEngine methods static (#71)

5.4.0 - 2020-11-07

Changed

Make the TypeScript types not terrible (#66, #67)

5.3.0 - 2020-07-30

Changed

Response object errors no longer include a stack property

5.2.0 - 2020-07-24

Added

Promise signatures for engine.handle (#55)
- So, in addition to engine.handle(request, callback), you can do e.g. await engine.handle(request).

Changed

Remove async and promise-to-callback dependencies
- These dependencies were used internally for middleware flow control. They have been replaced with Promises and native async/await, which means that some operations are no longer eagerly executed. This change may affect consumers that depend on the eager execution of middleware during request processing, outside of middleware functions and request handlers.
  - In general, it is a bad practice to work with state that depends on middleware execution, while the middleware are executing.