Loading.js

import React, { useState } from 'react';

const SvgLoading = props => {
  let { color = 'currentColor' } = props;
  let [gradientId] = useState('gradient-' + Math.random());

  return (
    <svg {...props} viewBox="0 0 38 38" style={{ ...props.style }}>
      <defs>
        <linearGradient
          x1="8.042%"
          y1="0%"
          x2="65.682%"
          y2="23.865%"
          id={gradientId}
        >
          <stop stopColor={color} stopOpacity={0} offset="0%" />
          <stop stopColor={color} stopOpacity={0.631} offset="63.146%" />
          <stop stopColor={color} offset="100%" />
        </linearGradient>
      </defs>
      <g transform="translate(1 2)" fill="none" fillRule="evenodd">
        <path
          d="M36 18c0-9.94-8.06-18-18-18"
          stroke={'url(#' + gradientId + ')'}
          strokeWidth={2}
          fill="none"
        />
        <circle fill={color} cx={36} cy={18} r={1} />
      </g>
    </svg>
  );
};

export default SvgLoading;