How to make it so that the function is called after the successful operation of this.$eh.$emit?

Question

Vue.js

this.$eh.$emit('remove-from-cart', this.cartItemId)

how to make the function payload.callbackfire after this.$eh.$emit completes.
Tried

this.$eh.$emit('remove-from-cart', this.cartItemId, payload.callback )

and

this.$eh.$emit('remove-from-cart', {this.cartItemId, done: () => payload.callback} )

but didn't help