MaticoSpec

The MaticoSpec defines how we specify an MaticoApp, from what panes should be on what pages to what datasets should be loaded and from where. The specification is written in Rust to ensure that we have a strickly specified and typechecked specification. Most users and developers will interact with the spec using language specific tools built on top of the rust code. For example, when building a frontend cpplication, the spec produces TypescriptTypes for each of it's components along with a WASM based validation function for each. See below for exampels

Building the spec for use in Rust

To build the specification library for use in Rust, first install Rust, then run

cargo build 

Testing

We are working on expanding the test suite around the specification. To run the existing tests, simply run

cargo test 

Building the WASM library

To generate the javacsript module that allows you to interact with the spec in javascript, you will first need to install wasm-pack, then run

wasm-pack build --scope=maticoapp

this will produce a pkg directory with the javascript module.

Using the javascript / wasm module

To use the module you will need to

1. Add @maticoapp/matico_spec to your project dependencies

yarn add @maticoapp/matico_spec 

then import the WASM module. This might vary a little dending on what build system you are using. You can see an example of how to do this in the MaticoComponents project in the useValidator hook

import { useEffect, useState } from 'react'

export const useValidator = () => {
  const [validator, setValidator] = useState<any>(null)
  const [validatorReady, setValidatorReady] = useState<boolean>(false)
  const [error, setError] = useState<any | undefined>(undefined)

  useEffect(() => {
    let f = async () => {
      try {
        const wasm = await import( /*webpackChunkName:"spec"*/ '@maticoapp/matico_spec');
        setValidator(wasm)
        setValidatorReady(true)
      } catch (err) {
        setError(`failed to load wasm: ${err}`)
        console.log("unexpected error in load wasm ", err);
      }
    };
    f();
  }, []);
  return { validator, validatorReady, error }

You can also just install @maticoapp/matico_components and use the hook directly.