TODO.md

Resolver todo

• resolveCanonicalFunctionLower has hardcoded lookup of the data type, this would not work outside of this demo!
• handling of the import/export names/namespaces is probably wrong
• resolve data types, TODO types
• remove or simplify debugging helpers
• simplify Resolver types
• be able to run zoo sample
• invoke start section ?
• nested modules
• export and import ABI interfaces for direct binding without JS. Something needs to copy the bytes ... "fused adapters" ?
• bind WASI preview 2 @bytecodealliance/preview2-shim npm package when necessary
• make sure we don't keep references to model after component was created. To not leak memory. How to test this ?
• consider "inlining" https://github.com/bytecodealliance/wasmtime/blob/main/crates/environ/src/component/translate/inline.rs
• all export const enum could be converted to numeric, which will be faster and save few KB of the download. But debugging and JSON would have numbers. Maybe regexp in rollup.

Binder todo

• implement all data types
• implement argument spilling
• implement record flattening
  • https://github.com/bytecodealliance/wasmtime/blob/2ad057d735edc43f8ba89428d483f2b2430c1068/crates/environ/src/component.rs#L29-L38
  • https://github.com/WebAssembly/component-model/blob/673d5c43c3cc0f4aeb8996a5c0931af623f16808/design/mvp/canonical-abi/definitions.py#L788
• implement size and alignment
• implement CallContext and own/borrow
• respect model options (UTF8/UTF16)
• trap exceptions and kill the component or marshall the error
• option to bind lazily only when methods all called
• fused adapters https://github.com/bytecodealliance/wasmtime/blob/main/crates/environ/src/component/translate/adapt.rs

Parser todo

• load start section
• add options to delay parsing core modules
• add options to skip parsing/storing custom sections

Testing

• add more WIT text based test scenarios into parser tests like
• change zoo to be program with main, not lib
• create sample app with nested modules
• create sample app in go
• create sample app in JS
• use JSCO to bind multiple components at runtime
• improve test coverage
• add test with Chrome, FF

Build

• add coverage to CI, fail if lower than some %
• produce NPM package and release it to www.npmjs.com
• get rid of rollup Circular dependencies warning
• rollup magic to eliminate debug helpers and asserts

Demo

• create demo web site
• command line in the browser for WASI cli programs

Other

• convert this TODO into github issues (this is more convenient for now)
• attract more contributors
• review license & add CoC
• donate this project to @bytecodealliance
• write article on how it works
• multi-memory https://github.com/bytecodealliance/jco/blob/main/crates/js-component-bindgen/src/core.rs