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import React from 'react' |
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import Head from '../shared/lib/head' |
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import type { NextPageContext } from '../shared/lib/utils' |
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const statusCodes: { [code: number]: string } = { |
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400: 'Bad Request', |
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404: 'This page could not be found', |
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405: 'Method Not Allowed', |
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500: 'Internal Server Error', |
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} |
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export type ErrorProps = { |
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statusCode: number |
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hostname?: string |
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title?: string |
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withDarkMode?: boolean |
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} |
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function _getInitialProps({ |
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req, |
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res, |
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err, |
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}: NextPageContext): Promise<ErrorProps> | ErrorProps { |
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const statusCode = |
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res && res.statusCode ? res.statusCode : err ? err.statusCode! : 404 |
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let hostname |
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if (typeof window !== 'undefined') { |
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hostname = window.location.hostname |
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} else if (req) { |
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const { getRequestMeta } = |
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require('../server/request-meta') as typeof import('../server/request-meta') |
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const initUrl = getRequestMeta(req, 'initURL') |
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if (initUrl) { |
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const url = new URL(initUrl) |
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hostname = url.hostname |
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} |
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} |
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return { statusCode, hostname } |
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} |
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const styles: Record<string, React.CSSProperties> = { |
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error: { |
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fontFamily: |
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'system-ui,"Segoe UI",Roboto,Helvetica,Arial,sans-serif,"Apple Color Emoji","Segoe UI Emoji"', |
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height: '100vh', |
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textAlign: 'center', |
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display: 'flex', |
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flexDirection: 'column', |
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alignItems: 'center', |
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justifyContent: 'center', |
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}, |
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desc: { |
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lineHeight: '48px', |
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}, |
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h1: { |
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display: 'inline-block', |
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margin: '0 20px 0 0', |
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paddingRight: 23, |
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fontSize: 24, |
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fontWeight: 500, |
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verticalAlign: 'top', |
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}, |
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h2: { |
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fontSize: 14, |
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fontWeight: 400, |
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lineHeight: '28px', |
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}, |
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wrap: { |
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display: 'inline-block', |
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}, |
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} |
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export default class Error<P = {}> extends React.Component<P & ErrorProps> { |
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static displayName = 'ErrorPage' |
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static getInitialProps = _getInitialProps |
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static origGetInitialProps = _getInitialProps |
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render() { |
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const { statusCode, withDarkMode = true } = this.props |
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const title = |
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this.props.title || |
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statusCodes[statusCode] || |
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'An unexpected error has occurred' |
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return ( |
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<div style={styles.error}> |
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<Head> |
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<title> |
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{statusCode |
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? `${statusCode}: ${title}` |
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: 'Application error: a client-side exception has occurred'} |
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</title> |
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</Head> |
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<div style={styles.desc}> |
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<style |
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dangerouslySetInnerHTML={{ |
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/* CSS minified from |
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body { margin: 0; color: #000; background: #fff; } |
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.next-error-h1 { |
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border-right: 1px solid rgba(0, 0, 0, .3); |
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} |
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${ |
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withDarkMode |
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? `@media (prefers-color-scheme: dark) { |
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body { color: #fff; background: #000; } |
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.next-error-h1 { |
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border-right: 1px solid rgba(255, 255, 255, .3); |
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} |
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}` |
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: '' |
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} |
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*/ |
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__html: `body{color:#000;background:#fff;margin:0}.next-error-h1{border-right:1px solid rgba(0,0,0,.3)}${ |
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withDarkMode |
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? '@media (prefers-color-scheme:dark){body{color:#fff;background:#000}.next-error-h1{border-right:1px solid rgba(255,255,255,.3)}}' |
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: '' |
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}`, |
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}} |
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/> |
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{statusCode ? ( |
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<h1 className="next-error-h1" style={styles.h1}> |
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{statusCode} |
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</h1> |
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) : null} |
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<div style={styles.wrap}> |
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<h2 style={styles.h2}> |
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{this.props.title || statusCode ? ( |
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title |
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) : ( |
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<> |
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Application error: a client-side exception has occurred{' '} |
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{Boolean(this.props.hostname) && ( |
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<>while loading {this.props.hostname}</> |
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)}{' '} |
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(see the browser console for more information) |
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</> |
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)} |
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. |
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</h2> |
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</div> |
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</div> |
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</div> |
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) |
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} |
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} |
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