cql2-wasm

A small WebAssembly module for parsing and translating CQL2.

Usage

Add to your project:

npm i cql2-wasm

Then:

import { CQL2 } from 'cql2-wasm'

const cql2 = new CQL2('collection = foo')

// Parse and display results
console.log('is_valid():', cql2.is_valid())
console.log('to_json():', cql2.to_json())
console.log('to_text():', cql2.to_text())

Building

Get wasm-pack. Then (from the top-level directory in this repo):

scripts/buildwasm

You can then preview our WASM playground locally. Get uv, then:

uv sync
uv run mkdocs serve

The playground will be available at http://127.0.0.1:8000/cql2-rs/playground/. There is a live version available at http://developmentseed.org/cql2-rs/latest/playground/.

Testing

This package includes two types of tests:

Rust Unit Tests

Unit tests are written in tests/common/mod.rs and support execution in various environments.

[!NOTE] All demonstrated commands are to be run from the root of the repository

Firefox

Run tests/web.rs browser tests in a WASM environment using wasm-bindgen-test:

wasm-pack test --firefox wasm

Then, open http://127.0.0.1:8000/ to see the test(s) run.

Node

Run tests/node.rs browser tests in a WASM environment using wasm-bindgen-test:

wasm-pack test --node wasm

JavaScript Integration Tests

These tests are written in JavaScript and verify the actual JavaScript API surface that developers will use. The tests work with both nodejs and web targets:

# Test with nodejs target
wasm-pack build --target nodejs wasm
npm --prefix wasm test

# Test with web target
wasm-pack build --target web wasm
npm --prefix wasm test