warn

Reports a development-only diagnostic. Only the first warning of each code is reported, for the whole program, until resetWarningDedupe; it goes to the listener of setWarningListener, or to console.warn with the text of formatMessage. Does nothing in production builds. Use it for a mistake that should not stop the app; throw ShadowError for one that must.

Import#

import { warn } from "@shadow-js/core/extend";

Signature#

function warn(code: MessageCode): void

Parameters#

Examples#

import { currentOwner, warn } from "@shadow-js/core/extend";

export function useTicker(): void {
  if (currentOwner() === null) warn("NO_OWNER_CLEANUP");
}