Proto commits in EventStore/EventStore-Client-NodeJS

These 35 commits are when the Protocol Buffers files have changed:

2026-05-06

[release/v1.2] [DEV-1654] Support V2 projection engine on createProjection (#504)

The documentation is generated from this commit.

[DEV-1654] Support V2 projection engine on createProjection (#502)

The documentation is generated from this commit.

2026-03-17

feat: add appendRecords operation with consistency checks (#460) Co-authored-by: William Chong <william-chong@outlook.com>

feat: add appendRecords operation with consistency checks (#459)

2026-01-27

Format

2025-12-24

Account for eventual consistency

2025-12-18

Add schema registry api

2025-10-20

Refactor multi stream append to use v2 protocol (#439) * Refactor multi stream append to use v2 protocol

Refactor multi stream append to use v2 protocol (#439) * Refactor multi stream append to use v2 protocol

2025-10-07

Refactor multi stream append to use v2 protocol

2025-07-21

feat: add multi stream append feature (#422)

2025-07-18

Update paths

Rename some proto files

Change folder structure of proto files

2025-06-18

feat: add multi stream append feature

2025-05-21

feat: supports new caught up and fell behind events. (#413) * feat: supports new caught up and fell behind events.

2025-05-20

feat: supports new caught up and fell behind events.

2025-05-07

Add version 2 of Streams and add new Registry proto definitions

2025-03-26

[DEVEX-189] Rebrand Client (#392) # Highlights 1. Use Rust client for read operations 2. Added a benchmark workflow in GitHub Actions. You can run the benchmark on GitHub by dispatching it manually ```mermaid xychart-beta title "KurrentDB NodeJS Client Performance Comparison" x-axis ["EventStoreDB Client v6.2.1", "KurrentDB Client 1.0.0", "KurrentDB bridge"] y-axis "Events per millisecond" 0 --> 70 bar [31.33, 60.66, 65.58] ``` ## Breaking Changes This document outlines the breaking changes introduced in the upcoming release of the KurrentDB client, which includes a performance boost for read operations as it now uses the Rust client for these operations. **Upgrading users must address these changes to ensure compatibility.** --- ## 1. Client Initialization via Connection String ### What Changed We've removed the class constructor method for initializing `KurrentDBClient`. Clients must now be created using a **connection string**, aligning with patterns used in other clients in our ecosystem. ### Migration Guide #### Old Approach ```typescript // Legacy constructor-based initialization const client = new KurrentDBClient({ { endpoint: "localhost:2113" }, { rootCertificate: node.certs.root }, { username: "admin", password: "changeit" } }); ``` #### Change to ```typescript const client = KurrentDBClient.connectionString`kdb://localhost:2113?tls=false`; ``` > **_NOTE:_** If you were using connection string, the code will remain unchanged. --- ## 2. Node.js 14 Deprecation ### What Changed We've officially dropped support for Node.js 14 following the [Node.js Release Schedule](https://github.com/nodejs/Release?tab=readme-ov-file#release-schedule). ### Action Required - Upgrade to Node.js **v20** or higher (LTS) - If maintaining multiple Node versions, use a version manager like `nvm`: ```bash nvm install --lts nvm use --lts ``` ### Impact - CI/CD pipelines using Node 14 will fail - TypeScript definitions now use features from ES2021+ --- ## 3. Stream Handling Migration to Async Iterables ### What Changed Previously, we supported both event emitter pattern and async iteration. In this release, we've **removed event emitter pattern** and now support only async iteration. ### Migration Guide #### Previously Supported Approaches ```typescript // Event Emitter Pattern client .readAll() .on("data", (event) => handleEvent(event)) .on("error", (err) => handleError(err)); // Async Iteration Pattern try { const stream = client.readAll(); for await (const event of stream) { handleEvent(event); } } catch (err) { handleError(err); } ``` #### Now Required ```typescript try { const stream = client.readAll(); for await (const event of stream) { handleEvent(event); } } catch (err) { handleError(err); } ``` ## 4. Removed the certChain and privateKey options from the KurrentDB client settings constructor ## 5. Rename otel tags Previously, we were using esdb as prefix in opentelemetry tags. With the rebranding efforts, we now changed it to kurrent. **Before** ``` db.esdb.user db.esdb.system db.esdb.operation db.esdb.subscription.id db.esdb.event db.esdb.event.type db.esdb.stream ``` **After** ``` db.kurrent.user db.kurrent.system db.kurrent.operation db.kurrent.subscription.id db.kurrent.event db.kurrent.event.type db.kurrent.stream ```

2025-03-03

feat: support kurrentdb protocol and rename package name

2024-05-10

Convert into monorepo (#367) * Convert into monorepo * Using lerna for managing packages * Add incremental and composite options in tsconfig to improve build optimization and project referencing * Isolate tests into a separate package

2024-05-07

Deprecate unused protobuf messages (#372) * Deprecate unused protobuf messages

2023-12-19

Add support for caught up and fell behind subscription message (#354) * Add support for caught up and fell behind subscription message * Remove redundant listener arguments in event handling * Rename RegularSubscription to CatchupSubscription

2022-08-15

update projections proto to latest

2022-02-07

Update `persistent` proto to latest - Regenerate code - Fix build for grpcSettings util

2021-11-03

Update client capabilities to updated serverFeatures api - remove in-client version matching - move version matching to tests only - update tests

2021-10-26

Update protos to latest - add extra sed for adding JS_STRING to deprecated uint64 - generate code - update streamname -> streamName

2020-09-23

update protos to latest

Update write events to give correct expected version - update to new proto - enable previously failing test

2020-09-21

[19] Force grpc to use strings for 64bit ints - add `generate:replace` script to add `[jstype = JS_STRING]` if not present - regenerate proto files

2020-09-11

update to latest protos

2020-07-22

Update code generation.

2020-01-15

Some refactorings and the addition of stream revision

2019-12-30

Fleshing out the append test

2019-11-22

Creating scripts for generating js from protos