PortalTarget PortalTarget.ts

92.3% Statements 12/13

50% Branches 2/4

100% Functions 2/2

92.3% Lines 12/13

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  import { PropsWithChildren, ReactPortal, useEffect, useState } from "react";
 
import { createPortal } from "react-dom";
 
import { TargetElementError } from "utils";
 
export default function PortalTarget({
  children,
  targetId,
}: PropsWithChildren<{
  targetId?: string | HTMLElement;
}>): ReactPortal | null {
  const [target, setTarget] = useState<Element | HTMLElement | null>();
 
  useEffect(() => {
    const targetElement =
      typeof targetId === "string"
        ? document.querySelector(`#${targetId}`)
        : targetId;
    setTarget(targetElement);
  }, [targetId]);
 
  if (target === undefined) {
    return null;
  }
 
  Iif (target === null) {
    throw new TargetElementError(targetId);
  }
 
  return createPortal(children, target);
}