Function: emitsFactory()

function emitsFactory<T>(validators: T): EmitFunctions<T>;

Factory function that converts emit validator functions to Vue-compatible emit functions.

This utility solves the TypeScript integration challenge with Vue's emit system:

• Vue expects emit functions to return void
• Developers want validator functions that return boolean for validation logic
• This factory preserves runtime validation while providing correct TypeScript types

Type Parameters

Type Parameter	Description
T extends EmitValidators	The type of the validators object

Parameters

Parameter	Type	Description
validators	T	Object containing validator functions that return boolean

Returns

EmitFunctions<T>

The same object cast to have emit functions that return void

Example

// Define validators with actual validation logic
const validators = {
  "update:modelValue": (value: string[]) => Array.isArray(value),
  error: (error: unknown) => true, // Always allow error emissions
  save: (data: SaveData) => data && typeof data.id === "string",
};

// Use in Vue component
export default defineComponent({
  emits: emitsFactory(validators),
  setup(props, { emit }) {
    // emit functions are properly typed as (...args) => void
    emit("update:modelValue", ["item1", "item2"]);
    emit("error", new Error("Something went wrong"));
  },
});