aliaset/examples/with-gatsby/src/components/seo.jsx

twind monorepo

import { useStaticQuery, graphql } from 'gatsby'
import PropTypes from 'prop-types'
import React from 'react'
import { Helmet } from 'react-helmet'

function SEO({ description, lang, meta, keywords, title }) {
  const { site } = useStaticQuery(graphql`
    query DefaultSEOQuery {
      site {
        siteMetadata {
          title
          description
          author
        }
      }
    }
  `)

  const metaDescription = description || site.siteMetadata.description

  return (
    <Helmet
      htmlAttributes={{
        lang,
      }}
      meta={[
        {
          name: `description`,
          content: metaDescription,
        },
        {
          property: `og:title`,
          content: title,
        },
        {
          property: `og:description`,
          content: metaDescription,
        },
        {
          property: `og:type`,
          content: `website`,
        },
        {
          name: `twitter:card`,
          content: `summary`,
        },
        {
          name: `twitter:creator`,
          content: site.siteMetadata.author,
        },
        {
          name: `twitter:title`,
          content: title,
        },
        {
          name: `twitter:description`,
          content: metaDescription,
        },
      ]
        .concat(
          keywords.length > 0
            ? {
                name: `keywords`,
                content: keywords.join(`, `),
              }
            : [],
        )
        .concat(meta)}
      title={title}
      titleTemplate={`%s | ${site.siteMetadata.title}`}
    />
  )
}

SEO.defaultProps = {
  lang: `en`,
  keywords: [],
  meta: [],
}

SEO.propTypes = {
  description: PropTypes.string,
  keywords: PropTypes.arrayOf(PropTypes.string),
  lang: PropTypes.string,
  meta: PropTypes.array,
  title: PropTypes.string.isRequired,
}

export default SEO