bufbuild/protobuf-es
Protocol Buffers for ECMAScript. The only JavaScript Protobuf library that is fully-compliant with Protobuf conformance tests. observed · 2026-08-28
Health v2 · maintenance only
98/100
- Activity 99
- Release rhythm 97
- Longevity 100
How is this computed?
round(0.45*activity + 0.35*rhythm + 0.20*longevity); archived -> min(score, 10) — computed 2026-09-02. Adoption (stars, forks) is never an input.
- gap_med: 20
- age_days: 1633
- days_rel: 20
- days_push: 7
- n_releases_24m: 28
Adoption not part of the score
1655 stars · 209 forks observed · 2026-08-28
What it is AI-extracted, prompt v1, taxonomy v1, 2026-08-30, confidence not recorded
Protobuf-ES is a Protocol Buffers runtime and protoc plugin for JavaScript and TypeScript, generating idiomatic plain-object messages with full proto2/proto3/Editions support. It passes Protobuf conformance tests with zero failures and works in browsers, Node.js, Deno, and Bun.
Use cases
- serialize protobuf messages to binary in javascript
- generate typescript types from proto files
- parse protobuf binary data in the browser
- convert protobuf messages to and from
- build type-safe rpc clients compatible with grpc
- work with protobuf extensions and custom options in typescript
When to choose
- you want fully spec-compliant protobuf semantics in JavaScript or TypeScript
- you prefer plain object messages and ESM over getter/setter classes and CommonJS
- you need proto2, proto3, and Editions 2024 support including extensions
- you are building Connect or gRPC services with type-safe clients and servers
When to avoid
- you need a non-JavaScript/TypeScript language runtime
- your toolchain depends on the legacy google-protobuf CommonJS API
- you only need JSON serialization and do not care about protobuf wire format
Facets
library · maturity active
serialization sdk parser developer-tools apis web-development bun browser cross-platform protobuf typescript code-generation esm grpc connect nodejs deno web-server
5 sources
- readme: https://github.com/bufbuild/protobuf-es · fetched 2026-08-28 · 5060cd79a318
- homepage: https://protobufes.com · fetched 2026-08-29 · c1dfd2f421ac
- site_page: https://protobufes.com/getting-started · fetched 2026-08-29 · 242d93b9b72e
- site_page: https://protobufes.com/reference/generated-code/features · fetched 2026-08-29 · 5b8bd1c2d929
- site_page: https://protobufes.com/reference/faq · fetched 2026-08-29 · 0967650d72e7
Member repositories
| Repository | Role | Health v2 |
|---|---|---|
| bufbuild/protobuf-es | main | 98 |
For agents
markdown · JSON · MCP: product_card(name="bufbuild/protobuf-es")
Data as of 2026-08-30T08:39:29.467469+00:00 · Report a problem