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fn_registry/functions/infra/wails_stream_data.md
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Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
2026-05-14 00:28:20 +02:00

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---
name: wails_stream_data
kind: function
lang: go
domain: infra
version: "1.0.0"
purity: impure
signature: "WailsStreamData[T any](ctx context.Context, cfg WailsStreamConfig, data []T) error"
description: "Envía datos como stream Go→TS con protocolo {name}/{name}:complete/{name}:error. Incluye WailsStreamFunc para generadores."
tags: [wails, stream, ipc, realtime, chunks, infra, pendiente-usar]
uses_functions: []
uses_types: []
returns: []
returns_optional: false
error_type: "error_go_core"
imports: [context, fmt, time, github.com/wailsapp/wails/v2/pkg/runtime]
params:
- name: ctx
desc: "context de Wails"
- name: cfg
desc: "estructura WailsStreamConfig con StreamName y ChunkDelay"
- name: data
desc: "slice de datos genericos a enviar en chunks"
output: "nil si el stream se completo exitosamente, error en caso contrario"
tested: false
tests: []
test_file_path: ""
file_path: "functions/infra/wails_stream_data.go"
---
## Ejemplo
```go
// Stream de slice
WailsStreamData(ctx, WailsStreamConfig{
StreamName: "logs",
ChunkDelay: 10 * time.Millisecond,
}, logLines)
// Stream con generador
WailsStreamFunc(ctx, "metrics", func(ctx context.Context, ch chan<- Metric) error {
for {
select {
case <-ctx.Done():
return nil
case <-time.After(time.Second):
ch <- collectMetric()
}
}
})
// Frontend lo recibe con useWailsStream:
// useWailsStream({ streamName: 'metrics', autoStart: true })
```
## Notas
Protocolo: chunks en `{streamName}`, fin en `{streamName}:complete`, error en `{streamName}:error`. Compatible con `use_wails_stream` del lado TS. WailsStreamFunc usa goroutine + canal para datos asíncronos. Requiere Go 1.18+ (generics) y la dependencia `github.com/wailsapp/wails/v2` en el proyecto destino.