Support the Minimum Common Web Platform API

[saghul]

https://common-min-api.proposal.wintercg.org/

---

Interfaces:

• [x] AbortController
• [x] AbortSignal
• [x] Blob
• [x] ByteLengthQueuingStrategy
• [x] CompressionStream
• [x] CountQueuingStrategy
• [x] Crypto
• [ ] CryptoKey
• [x] DecompressionStream
• [x] DOMException
• [x] Event
• [x] EventTarget
• [x] File
• [x] FormData
• [x] Headers
• [x] ReadableByteStreamController
• [x] ReadableStream
• [x] ReadableStreamBYOBReader
• [x] ReadableStreamBYOBRequest
• [x] ReadableStreamDefaultController
• [x] ReadableStreamDefaultReader
• [x] Request
• [x] Response
• [ ] SubtleCrypto
• [x] TextDecoder
• [x] TextDecoderStream
• [x] TextEncoder
• [x] TextEncoderStream
• [x] TransformStream
• [x] TransformStreamDefaultController
• [x] URL
• [x] URLSearchParams
• [ ] WebAssembly.Global
• [x] WebAssembly.Instance
• [ ] WebAssembly.Memory
• [x] WebAssembly.Module
• [ ] WebAssembly.Table
• [x] WritableStream
• [x] WritableStreamDefaultController

Global methods / properties:

• [x] globalThis
• [x] globalThis.atob()
• [x] globalThis.btoa()
• [x] globalThis.console
• [ ] globalThis.crypto
• [x] globalThis.fetch()
• [x] globalThis.navigator.userAgent
• [x] globalThis.performance.now()
• [x] globalThis.performance.timeOrigin
• [x] globalThis.queueMicrotask()
• [x] globalThis.setTimeout() / globalThis.clearTimeout()
• [x] globalThis.setInterval() / globalThis.clearInterval()
• [x] globalThis.structuredClone()
• [x] globalThis.WebAssembly.compile()
• [ ] globalThis.WebAssembly.compileStreaming()
• [x] globalThis.WebAssembly.instantiate()
• [ ] globalThis.WebAssembly.instantiateStreaming()
• [ ] globalThis.WebAssembly.validate()

[bnoordhuis]

To avoid duplication across embedders, atob, btoa, structuredClone¹, queueMicrotask and performance could be implemented as quickjs-ng C APIs or JS globals. We'd also have to add DOMException but that seems okay to me. We can make them opt-in when the JSContext is created.

Thoughts?

¹ TBD how to handle transferables

[saghul]

Yep makes sense to me, let's do that!

[jimmywarting]

https://github.com/saghul/txiki.js/blob/c7c5aa988356751051f748485db010cee219b446/src/js/polyfills/blob.js#L1-L8

For a better Blob and File polyfill I would recommend taking a look at fetch-blob

[saghul]

Thanks!

[guest271314]

navigator.userAgent. See https://github.com/wintercg/proposal-common-minimum-api/issues/62.

[saghul]

navigator.userAgent. See wintercg/proposal-common-minimum-api#62.

Done in https://github.com/saghul/txiki.js/pull/439

[guest271314]

Ehe WinterCG folks banned me from over there at Minimum Common world already. No notice, no reason given. Weak. Anyway, carry on.