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wasi-shims: explicit type on the poll export (JSR no-slow-types) #73

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Merged
lann merged 1 commit into from
Aug 11, 2026
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wasi-shims: explicit type on the poll export (JSR no-slow-types) #73

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5 changes: 4 additions & 1 deletion wasi-shims/src/io.ts
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Original file line number Diff line number Diff line change
Expand Up @@ -139,8 +139,11 @@ export class Pollable {
* `wasi:io/poll.poll` — indices of the ready pollables, parking the
* calling frame until at least one is ready. Sync fast path: if anything
* is ready right now, the indices return without a suspension.
*
* The explicit annotation is JSR's no-slow-types rule (the `suspending`
* wrapper would otherwise leave this public symbol's type inferred).
*/
export const poll = suspending(
export const poll: (pollables: readonly Pollable[]) => number[] | Promise<number[]> = suspending(
(pollables: readonly Pollable[]): number[] | Promise<number[]> => {
// io.wit: "poll [...] traps if the list [...] is empty". An unbranded
// host throw is the embedder contract's spelling of a trap.
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