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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,23 @@ | ||
| // Error Decoder requires reading pregenerated error message from getStaticProps, | ||
| // but MDX component doesn't support props. So we use React Context to populate | ||
| // the value without prop-drilling. | ||
| // TODO: Replace with React.cache + React.use when migrating to Next.js App Router | ||
|
|
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| import {createContext, useContext} from 'react'; | ||
|
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| const notInErrorDecoderContext = Symbol('not in error decoder context'); | ||
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|
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| export const ErrorDecoderContext = createContext< | ||
| | {errorMessage: string | null; errorCode: string | null} | ||
| | typeof notInErrorDecoderContext | ||
| >(notInErrorDecoderContext); | ||
|
|
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| export const useErrorDecoderParams = () => { | ||
| const params = useContext(ErrorDecoderContext); | ||
|
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| if (params === notInErrorDecoderContext) { | ||
| throw new Error('useErrorDecoder must be used in error decoder pages only'); | ||
| } | ||
|
|
||
| return params; | ||
| }; |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,107 @@ | ||
| import {useEffect, useState} from 'react'; | ||
| import {useErrorDecoderParams} from '../ErrorDecoderContext'; | ||
| import cn from 'classnames'; | ||
|
|
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| function replaceArgs( | ||
| msg: string, | ||
| argList: Array<string | undefined>, | ||
| replacer = '[missing argument]' | ||
| ): string { | ||
| let argIdx = 0; | ||
| return msg.replace(/%s/g, function () { | ||
| const arg = argList[argIdx++]; | ||
| // arg can be an empty string: ?args[0]=&args[1]=count | ||
| return arg === undefined || arg === '' ? replacer : arg; | ||
| }); | ||
| } | ||
|
|
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| /** | ||
| * Sindre Sorhus <https://sindresorhus.com> | ||
| * Released under MIT license | ||
| * https://github.com/sindresorhus/linkify-urls/blob/edd75a64a9c36d7025f102f666ddbb6cf0afa7cd/index.js#L4C25-L4C137 | ||
| * | ||
| * The regex is used to extract URL from the string for linkify. | ||
| */ | ||
| const urlRegex = | ||
| /((?<!\+)https?:\/\/(?:www\.)?(?:[-\w.]+?[.@][a-zA-Z\d]{2,}|localhost)(?:[-\w.:%+~#*$!?&/=@]*?(?:,(?!\s))*?)*)/g; | ||
|
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| // When the message contains a URL (like https://fb.me/react-refs-must-have-owner), | ||
| // make it a clickable link. | ||
| function urlify(str: string): React.ReactNode[] { | ||
| const segments = str.split(urlRegex); | ||
|
|
||
| return segments.map((message, i) => { | ||
| if (i % 2 === 1) { | ||
| return ( | ||
| <a | ||
| key={i} | ||
| target="_blank" | ||
| className="underline" | ||
| rel="noopener noreferrer" | ||
| href={message}> | ||
| {message} | ||
| </a> | ||
| ); | ||
| } | ||
| return message; | ||
| }); | ||
| } | ||
|
|
||
| // `?args[]=foo&args[]=bar` | ||
| // or `// ?args[0]=foo&args[1]=bar` | ||
| function parseQueryString(search: string): Array<string | undefined> { | ||
| const rawQueryString = search.substring(1); | ||
| if (!rawQueryString) { | ||
| return []; | ||
| } | ||
|
|
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| const args: Array<string | undefined> = []; | ||
|
|
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| const queries = rawQueryString.split('&'); | ||
| for (let i = 0; i < queries.length; i++) { | ||
| const query = decodeURIComponent(queries[i]); | ||
| if (query.startsWith('args[')) { | ||
| args.push(query.slice(query.indexOf(']=') + 2)); | ||
| } | ||
| } | ||
|
|
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| return args; | ||
| } | ||
|
|
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| export default function ErrorDecoder() { | ||
| const {errorMessage} = useErrorDecoderParams(); | ||
| /** error messages that contain %s require reading location.search */ | ||
| const hasParams = errorMessage?.includes('%s'); | ||
| const [message, setMessage] = useState<React.ReactNode | null>(() => | ||
| errorMessage ? urlify(errorMessage) : null | ||
| ); | ||
|
|
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| const [isReady, setIsReady] = useState(errorMessage == null || !hasParams); | ||
|
|
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| useEffect(() => { | ||
| if (errorMessage == null || !hasParams) { | ||
| return; | ||
| } | ||
|
|
||
| setMessage( | ||
| urlify( | ||
| replaceArgs( | ||
| errorMessage, | ||
| parseQueryString(window.location.search), | ||
| '[missing argument]' | ||
| ) | ||
| ) | ||
| ); | ||
| setIsReady(true); | ||
| }, [hasParams, errorMessage]); | ||
|
|
||
| return ( | ||
| <code | ||
| className={cn( | ||
| 'block bg-red-100 text-red-600 py-4 px-6 mt-5 rounded-lg', | ||
| isReady ? 'opacity-100' : 'opacity-0' | ||
| )}> | ||
| <b>{message}</b> | ||
| </code> | ||
| ); | ||
| } |
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