react-native-modalfy/src/utils/getStackItemOptions.ts

Modal citizen of React Native

import type { ModalStack, ModalStackItem, ModalOptions } from '../types'

export default function <P>(stackItem: ModalStackItem<P> | undefined, stack: ModalStack<P>): ModalOptions {
  const stackItemOption = <K extends keyof ModalOptions>(key: K): ModalOptions[K] =>
    stackItem?.component.modalOptions?.[key] ?? stackItem?.options?.[key]

  const extractOption = <K extends keyof ModalOptions>(key: K): ModalOptions[K] =>
    stackItem?.component.modalOptions?.[key] ?? stackItem?.options?.[key] ?? stack.defaultOptions[key]

  return {
    position: extractOption('position'),
    backBehavior: extractOption('backBehavior'),
    backdropColor: extractOption('backdropColor'),
    containerStyle: extractOption('containerStyle'),
    animateInConfig: extractOption('animateInConfig'),
    backdropOpacity: extractOption('backdropOpacity'),
    animateOutConfig: extractOption('animateOutConfig'),
    transitionOptions: extractOption('transitionOptions'),
    stackContainerStyle: extractOption('stackContainerStyle'),
    disableFlingGesture: extractOption('disableFlingGesture'),
    pointerEventsBehavior: extractOption('pointerEventsBehavior'),
    backdropAnimationDuration: extractOption('backdropAnimationDuration'),
    /**
     * NOTE: In StackItem's updateAnimatedValue() we don't use the `animateIn/OutConfig` if
     * `animationIn/Out` exists. However, those can be coming from the defaultOptions and
     * in the stackItem option, only `animateIn/OutConfig` would be defined. Hence the need
     * for this check so that the default `animationIn/Out` wouldn't override the stackItem
     * specific `animateIn/OutConfig`.
     */
    animationIn: stackItemOption('animateInConfig') ? undefined : extractOption('animationIn'),
    animationOut: stackItemOption('animateOutConfig') ? undefined : extractOption('animationOut'),
  }
}