kitten

With styled-components into the future

Preprocessing is dead, long live preprocessing!

This is a CFP for ReactiveConf 2017's open call for Lightning talks. If you'd like to see this talk become a reality, please ⭐ star this gist. #ReactiveConf

eldh

import * as React from "react";
import { useMousePosition } from "~/hooks/useMousePosition";

/** Component to cover the area between the mouse cursor and the sub-menu, to allow moving cursor to lower parts of sub-menu without the sub-menu disappearing. */
export function MouseSafeArea(props: { parentRef: React.RefObject<HTMLDivElement> }) {
  const { x = 0, y = 0, height: h = 0, width: w = 0 } = props.parentRef.current?.getBoundingClientRect() || {};
  const [mouseX, mouseY] = useMousePosition();
  const positions = { x, y, h, w, mouseX, mouseY };
  return (
    <div

astoilkov

Batching makes it difficult to perform imperative actions like focus

Solution to the problem discussed with Dan Abramov here.

implementation:

export default function useQueueFocus(): (elementRef: React.MutableRefObject<HTMLElement | null>) => void {
  const isUnmountedRef = useRef(false)
  const forceUpdate = useForceUpdate()
  const ref = useRef<MutableRefObject<HTMLElement | null> | undefined>(undefined)

ryanflorence

import invariant from "tiny-invariant";

class AmalgoBox extends HTMLElement {
  get input() {
    return this.querySelector("input") as HTMLInputElement;
  }

  get button() {
    return this.querySelector("button") as HTMLButtonElement;
  }