# ballercat/walt

:zap: Walt is a JavaScript-like syntax for WebAssembly text format :zap:

Repository: https://github.com/ballercat/walt
Canonical: https://ross.abutalabs.com/products/walt
Homepage: https://ballercat.github.io/walt/
Language: JavaScript
License: MIT
License Family: permissive
Topics: compiler, webassembly, javascript
Last push: 2023-01-02T16:57:45+00:00

## Health v2 (maintenance only)
Score: 23/100 (v2, computed 2026-09-03T02:20:16.233290+00:00)
- activity 0, release rhythm 8, longevity 100
- inputs: {"age_days": 3400, "days_push": 1339, "days_rel": null, "gap_med": null, "n_releases_24m": 0}
- flags: none
- formula: round(0.45*activity + 0.35*rhythm + 0.20*longevity); archived -> min(score, 10)

## Adoption (not part of the score)
Stars 4631, forks 119 (observed 2026-08-28T04:08:55.311522+00:00)

## What it is
Walt is a JavaScript-like alternative syntax for the WebAssembly text format that compiles .walt files directly to WebAssembly binaries. It lets front-end engineers write close-to-the-metal WebAssembly using typed JavaScript syntax without needing C, Rust, or LLVM toolchains.

## Use cases
- write webassembly without learning c or rust
- compile javascript-like syntax to wasm binaries
- avoid llvm and binary toolkit dependencies
- integrate webassembly compilation into webpack builds
- edit wasm with javascript-familiar syntax
- generate webassembly modules in the browser

## When to choose
- you want to write webassembly using javascript-like syntax
- you want zero-dependency wasm compilation in pure javascript
- you want to integrate wasm compilation into a webpack pipeline
- you find .wat text format too terse to work with directly

## When to avoid
- you need a production-grade, stable toolchain
- you prefer compiling from c, c++, or rust with full ecosystem support
- you need the latest webassembly features and proposals
- you need long-term maintenance and active support

## Facets
- artifact type: library
- maturity: experimental
- function: compiler, wasm, parser, build-tool
- domain: compilers, web-development, programming-languages, developer-tools
- platform: browser
- tags: webassembly, javascript-syntax, wasm-text-format, webpack-integration, compiler, nodejs, javascript

## Member repositories
- ballercat/walt (main) score 23

## Provenance
- Observed fields: from GitHub, fetched 2026-08-28T04:08:55.311522+00:00.
- Health v2: computed from the inputs above; adoption is never an input.
- Inferred fields (summary, facets, guidance): AI-extracted, prompt v1, taxonomy v1, on 2026-08-29T18:19:36.212380+00:00, confidence not recorded.
  - readme: https://github.com/ballercat/walt (fetched 2026-08-28T04:08:55.311522+00:00, sha 4d0b84c74018)
  - homepage: https://ballercat.github.io/walt/ (fetched 2026-08-29T09:04:27.426342+00:00, sha 703e0c0b4c2b)
- Data as of 2026-08-30T08:39:29.467469+00:00.