Create a new asynchronous channel.

Emit a value asynchronously into a channel.

Internal: Treat do-awaitstd/async/internal/do-await: forall<a> (setup : await-setup<a>, async-scope : async-scope, label : string) -> async-await await-result<a> as no-wait calls, and emit the resumption eventually in the given channel.

Receive (and remove) a value from the channel: returns immediately if a value is available and otherwise waits asynchronously until a value becomes available.

Emit a value asynchronously into a channel such that the current strand continues immediately.

Return immediately if a value is available on the channel and otherwise returns Nothingstd/core/types/Nothing: forall<a> maybe<a>.