fix: expose PropFnInterface (#849)

Author: manucorporat

packages/qwik/src/core/api.md

@@ -305,8 +305,12 @@ export type OnRenderFn<PROPS> = (props: PROPS) => JSXNode<any> | null | (() => J
 // @alpha
 export const pauseContainer: (elmOrDoc: Element | Document, defaultParentJSON?: Element) => Promise<SnapshotResult>;
 
-// Warning: (ae-forgotten-export) The symbol "PropFnInterface" needs to be exported by the entry point index.d.ts
-//
+// @public (undocumented)
+export interface PropFnInterface<ARGS extends any[], RET> {
+    // (undocumented)
+    (...args: ARGS): Promise<RET>;
+}
+
 // @public (undocumented)
 export type PropFunction<T extends Function> = T extends (...args: infer ARGS) => infer RET ? PropFnInterface<ARGS, RET> : never;
 

packages/qwik/src/core/index.ts

@@ -22,7 +22,7 @@ export type { SnapshotState, SnapshotResult } from './object/store';
 //////////////////////////////////////////////////////////////////////////////////////////
 export { $ } from './import/qrl.public';
 export { qrl, inlinedQrl } from './import/qrl';
-export type { QRL, PropFunction } from './import/qrl.public';
+export type { QRL, PropFunction, PropFnInterface } from './import/qrl.public';
 export type { Props } from './props/props.public';
 export { implicit$FirstArg } from './util/implicit_dollar';