excalidraw/src/components/ColorPicker.tsx

import React, { lazy } from "react";
import { Popover } from "./Popover";

const TwitterPicker = lazy(() =>
  import(
    /* webpackPrefetch: true */ "react-color/lib/components/twitter/Twitter"
  )
);

export function ColorPicker({
  color,
  onChange
}: {
  color: string | null;
  onChange: (color: string) => void;
}) {
  const [isActive, setActive] = React.useState(false);
  return (
    <div>
      <button
        className="swatch"
        style={color ? { backgroundColor: color } : undefined}
        onClick={() => setActive(!isActive)}
      />
      <React.Suspense fallback="">
        {isActive ? (
          <Popover onCloseRequest={() => setActive(false)}>
            <TwitterPicker
              colors={[
                "#000000",
                "#ABB8C3",
                "#FFFFFF",
                "#FF6900",
                "#FCB900",
                "#00D084",
                "#8ED1FC",
                "#0693E3",
                "#EB144C",
                "#F78DA7",
                "#9900EF"
              ]}
              width="205px"
              color={color || undefined}
              onChange={changedColor => {
                onChange(changedColor.hex);
              }}
            />
          </Popover>
        ) : null}
      </React.Suspense>
      <input
        type="text"
        className="swatch-input"
        value={color || ""}
        onPaste={e => onChange(e.clipboardData.getData("text"))}
        onChange={e => onChange(e.target.value)}
      />
    </div>
  );
}