references.md

polyengine — references

Canonical links contributors (human or agent) are likely to need. Versioned links are pinned to the versions this repo pins; re-pin them together with the dependency.

Component Model spec (submodule: third_party/component-model)

• Explainer (text format, grammar, validation): https://github.com/WebAssembly/component-model/blob/main/design/mvp/Explainer.md
• Canonical ABI (lift/lower, options, built-ins, invariants): https://github.com/WebAssembly/component-model/blob/main/design/mvp/CanonicalABI.md
• Executable CABI reference (the tie-breaking authority for runtime semantics): https://github.com/WebAssembly/component-model/blob/main/design/mvp/canonical-abi/definitions.py — with run_tests.py and diff.py alongside
• Binary format: https://github.com/WebAssembly/component-model/blob/main/design/mvp/Binary.md
• Concurrency model (0.3 tasks/streams/futures): https://github.com/WebAssembly/component-model/blob/main/design/mvp/Concurrency.md
• WIT: https://github.com/WebAssembly/component-model/blob/main/design/mvp/WIT.md
• Shared-nothing linking: https://github.com/WebAssembly/component-model/blob/main/design/mvp/Linking.md
• Official WAST suite: https://github.com/WebAssembly/component-model/tree/main/test
• User-facing CM documentation: https://component-model.bytecodealliance.org/
• Our upstream findings tracker: upstream-component-model-repo-findings.md

JSPI and engine support

• JSPI proposal Overview (the frame rule lives in "Restriction"): https://github.com/WebAssembly/js-promise-integration/blob/main/proposals/js-promise-integration/Overview.md
• V8 JSPI introduction: https://v8.dev/blog/jspi
• Engine feature matrix: https://webassembly.org/features/ (data: https://github.com/WebAssembly/website/blob/main/features.json)
• V8 wasm code caching (the URL/HTTP-cache anchoring facts in architecture.md §10): https://v8.dev/blog/wasm-code-caching
• Stack-switching proposal (JSPI's core-wasm sibling, context only): https://github.com/WebAssembly/stack-switching

wasmtime internals (pinned: wasmtime-environ 47.0.3)

• API docs: https://docs.rs/wasmtime-environ/47.0.3/wasmtime_environ/ — notably component::{Translator, Component, GlobalInitializer, CoreDef, Trampoline, CanonicalOptions} and fact::Import
• Source at the pinned tag: https://github.com/bytecodealliance/wasmtime/tree/v47.0.3/crates/environ/src — FACT: src/fact.rs (+ src/fact/), component translation: src/component/
• FACT design note ("polyfill for the component model in JS environments" is an intended consumer): https://github.com/bytecodealliance/wasmtime/blob/v47.0.3/crates/environ/src/component/translate/adapt.rs
• Wasmtime component wast tests (supplementary corpus): https://github.com/bytecodealliance/wasmtime/tree/main/tests/misc_testsuite/component-model

Toolchain crates (pinned versions in lockfiles)

• wasm-tools repo (CLI + crates): https://github.com/bytecodealliance/wasm-tools
• wast crate (component-aware wast parsing, used by testgen): https://docs.rs/wast/
• wasmparser (0.252.x — must match wasmtime-environ): https://docs.rs/wasmparser/
• wasm-encoder: https://docs.rs/wasm-encoder/
• wit-parser (bindgen input): https://docs.rs/wit-parser/
• wit-bindgen (guest toolchain, pinned 0.60.0): https://github.com/bytecodealliance/wit-bindgen — generate! macro docs: https://docs.rs/wit-bindgen/0.60.0/wit_bindgen/macro.generate.html
• wit-bindgen runtime tests (compat corpus): https://github.com/bytecodealliance/wit-bindgen/tree/main/tests

JS platform specifics

• WebIDL USVString conversion (our string-lowering semantics): https://webidl.spec.whatwg.org/#idl-USVString
• String.prototype.toWellFormed (ES2024): https://tc39.es/ecma262/#sec-string.prototype.towellformed
• TextEncoder.encodeInto: https://developer.mozilla.org/en-US/docs/Web/API/TextEncoder/encodeInto
• TextDecoder labels (note: "latin1" label decodes windows-1252, hence the hand-rolled latin1 in runtime/src/cabi/strings.ts): https://encoding.spec.whatwg.org/#names-and-labels
• FinalizationRegistry (resource backstop — read the caveats): https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/FinalizationRegistry
• Explicit resource management / using (TS 5.2+, Symbol.dispose): https://www.typescriptlang.org/docs/handbook/release-notes/typescript-5-2.html
• WebAssembly JS API spec: https://webassembly.github.io/spec/js-api/
• Deno runtime docs (workspaces, deno test, --v8-flags): https://docs.deno.com/runtime/