Function wrapMapToPropsFunc

src/connect/wrapMapToProps.ts:68–110

(
  mapToProps: MapToProps,
  methodName: string,
)

//    the developer that their mapToProps function is not returning a valid result.
//
export function wrapMapToPropsFunc<P extends AnyProps = AnyProps>(
  mapToProps: MapToProps,
  methodName: string,
) {
  return function initProxySelector(
    dispatch: Dispatch,
    { displayName }: { displayName: string },
  ) {
    const proxy = function mapToPropsProxy(
      stateOrDispatch: StateOrDispatch,
      ownProps?: P,
    ): MapToProps {
      return proxy.dependsOnOwnProps
        ? proxy.mapToProps(stateOrDispatch, ownProps)
        : proxy.mapToProps(stateOrDispatch, undefined)
    }

    // allow detectFactoryAndVerify to get ownProps
    proxy.dependsOnOwnProps = true

    proxy.mapToProps = function detectFactoryAndVerify(
      stateOrDispatch: StateOrDispatch,
      ownProps?: P,
    ): MapToProps {
      proxy.mapToProps = mapToProps
      proxy.dependsOnOwnProps = getDependsOnOwnProps(mapToProps)
      let props = proxy(stateOrDispatch, ownProps)

      if (typeof props === 'function') {
        proxy.mapToProps = props
        proxy.dependsOnOwnProps = getDependsOnOwnProps(props)
        props = proxy(stateOrDispatch, ownProps)
      }

      if (process.env.NODE_ENV !== 'production')
        verifyPlainObject(props, displayName, methodName)

      return props
    }

    return proxy
  }
}