🛤 JavaScript BigInt to WebAssembly i64 integration

[jfbastien]

This is a tracking issue for a post-MVP feature
It will be updated as the issue progresses.

Topic JavaScript BigInt to WebAssembly i64 integration
Champion Dan Ehrenberg @littledan
Status in progress
Phase proposed spec text available
Linked issues WebAssembly/spec#707
Linked repositories github.com/WebAssembly/JS-BigInt-integration

Details

With this patch, BigInts have support for bidirectionally converting
to 64-bit integer WebAssembly values, which appears as

• Parameters and return values to exported WebAssembly functions
• Parameters and return values to host functions
• Imported and exported globals

BigInts can be read or written from WebAssembly memory using the
BigInt proposal's BigInt64Array or BigUint64Array; no additional
support is needed.

[binji]

Moved to WebAssembly/proposals#7.