Publish a reactive value to a shinyreact client (the ui.tsx pattern)

Server-side counterpart to useShinyOutputValue(). Assign to output[[id]]; a React client reads the value by id. There is no UI placeholder — the client owns all UI. Accepts any JSON-serializable value (passed through unchanged).

Usage

reactive_output(expr, env = parent.frame(), quoted = FALSE)

Arguments

expr: An expression returning a JSON-serializable value.
env: The environment in which to evaluate expr.
quoted: Is expr already quoted?

Value

A Shiny render function.

Examples

# The client reads this with useShinyOutputValue("greeting")
# and writes input$name with useShinyInput("name", "world").
server <- function(input, output, session) {
  output$greeting <- reactive_output({
    paste0("Hello, ", input$name, "!")
  })
}

if (interactive()) {
  shiny::shinyApp(page_react(), server)
}