text: import React from "react";
  import PropTypes from "prop-types";
  import config from "../config";
  
  export default class HTML extends React.Component {
    render() {
      return (
        <html {...this.props.htmlAttributes}>
          <head>
            <meta charSet="utf-8" />
            <meta httpEquiv="x-ua-compatible" content="ie=edge" />
            <meta
              name="viewport"
              content="width=device-width, initial-scale=1, shrink-to-fit=no"
            />
            {config.siteMetadata.ogImage ? (
              <meta property="og:image" content={config.siteMetadata.ogImage} />
            ) : null}
            <meta property="twitter:card" content="summary_large_image" />
            {config.siteMetadata.ogImage ? (
              <meta
                property="twitter:image"
                content={config.siteMetadata.ogImage}
              />
            ) : null}
            {config.siteMetadata.favicon ? (
              <link
                rel="shortcut icon"
                type="image/svg"
                href={config.siteMetadata.favicon}
              />
            ) : null}
            <link rel="stylesheet" href="/bootstrap.min.css" />
            {this.props.headComponents}
          </head>
          <body {...this.props.bodyAttributes}>
            {this.props.preBodyComponents}
            <div
              key={`body`}
              id="___gatsby"
              dangerouslySetInnerHTML={{ __html: this.props.body }}
            />
            {this.props.postBodyComponents}
          </body>
        </html>
      );
    }
  }
  
  HTML.propTypes = {
    htmlAttributes: PropTypes.object,
    headComponents: PropTypes.array,
    bodyAttributes: PropTypes.object,
    preBodyComponents: PropTypes.array,
    body: PropTypes.string,
    postBodyComponents: PropTypes.array
  };
  