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Overview

@bpmnkit/reebe-wasm is the WebAssembly build of the Reebe BPMN workflow engine, compiled from Rust via wasm-pack. It enables full BPMN 2.0 process execution directly in the browser — no server required.

Used internally by @bpmnkit/engine for the ./wasm-runner entry point, which powers the BPMNKit Studio simulator and the casen test CLI command.

Features

• Full BPMN execution — gateways, events, subprocesses, boundary events
• Zero network calls — runs entirely in the browser sandbox
• DMN decisions — inline decision table evaluation
• FEEL expressions — condition and mapping evaluation
• WebAssembly — near-native performance, minimal footprint

Installation

npm install @bpmnkit/reebe-wasm
pnpm add @bpmnkit/reebe-wasm

Note: This package is a WebAssembly binary. It requires a bundler with WASM support (Vite, Webpack 5+, or a modern Rollup config).

Usage

Used automatically by @bpmnkit/engine when you import from the ./wasm-runner subpath:

import { runScenarioWasm } from "@bpmnkit/engine/wasm-runner"

const result = await runScenarioWasm(bpmnXml, scenario)

For direct usage:

import init, { WasmEngine } from "@bpmnkit/reebe-wasm"

await init()

const engine = new WasmEngine()
engine.deploy(bpmnXml)
const instance = engine.start_instance("my-process", JSON.stringify({ orderId: "123" }))

API Reference

WasmEngine

| Method | Description | |--------|-------------| | deploy(bpmnXml: string) | Deploy a BPMN process definition | | start_instance(processId, variablesJson) | Start a new process instance | | complete_job(key, variablesJson) | Complete a service task job | | fail_job(key, errorMessage, retries) | Fail a service task job | | get_snapshot() | Return the current engine state as JSON |

Build from Source

The WASM binary is compiled from the Rust crate at apps/reebe/crates/reebe-wasm:

# From apps/reebe/
pnpm build:wasm

Requires Rust and wasm-pack.

Related Packages

| Package | Description | |---------|-------------| | @bpmnkit/core | BPMN/DMN/Form parser, builder, layout engine | | @bpmnkit/canvas | Zero-dependency SVG BPMN viewer | | @bpmnkit/editor | Full-featured interactive BPMN editor | | @bpmnkit/engine | Lightweight BPMN process execution engine | | @bpmnkit/feel | FEEL expression language parser & evaluator | | @bpmnkit/plugins | 22 composable canvas plugins | | @bpmnkit/api | Camunda 8 REST API TypeScript client | | @bpmnkit/ascii | Render BPMN diagrams as Unicode ASCII art | | @bpmnkit/ui | Shared design tokens and UI components | | @bpmnkit/profiles | Shared auth, profile storage, and client factories for CLI & proxy | | @bpmnkit/operate | Monitoring & operations frontend for Camunda clusters | | @bpmnkit/connector-gen | Generate connector templates from OpenAPI specs | | @bpmnkit/cli | Camunda 8 command-line interface (casen) | | @bpmnkit/proxy | Local AI bridge and Camunda API proxy server | | @bpmnkit/patterns | Domain process patterns for BPMNKit AIKit | | @bpmnkit/worker-client | Thin Zeebe REST client for standalone workers | | @bpmnkit/cli-sdk | Plugin authoring SDK for the casen CLI | | @bpmnkit/create-casen-plugin | Scaffold a new casen CLI plugin in seconds | | @bpmnkit/casen-report | HTML reports from Camunda 8 incident and SLA data | | @bpmnkit/casen-worker-http | Example HTTP worker plugin — completes jobs with live JSONPlaceholder API data | | @bpmnkit/casen-worker-ai | AI task worker — classify, summarize, extract, and decide using Claude |

License

MIT © BPMN Kit — made by u11g