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Direktori : /opt/alt/alt-nodejs12/root/lib/node_modules/npm/docs/src/components/ |
Current File : //opt/alt/alt-nodejs12/root/lib/node_modules/npm/docs/src/components/seo.js |
/** * SEO component that queries for data with * Gatsby's useStaticQuery React hook * * See: https://www.gatsbyjs.org/docs/use-static-query/ */ import React from 'react' import PropTypes from 'prop-types' import Helmet from 'react-helmet' import { useStaticQuery, graphql } from 'gatsby' function SEO ({ description, lang, meta, title }) { const { site } = useStaticQuery( graphql` query { site { siteMetadata { title description author } } } ` ) const metaDescription = description || site.siteMetadata.description return ( <Helmet htmlAttributes={{ lang }} title={title} titleTemplate={`%s | ${site.siteMetadata.title}`} 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(meta)} /> ) } SEO.defaultProps = { lang: 'en', meta: [], description: '' } SEO.propTypes = { description: PropTypes.string, lang: PropTypes.string, meta: PropTypes.arrayOf(PropTypes.object), title: PropTypes.string.isRequired } export default SEO