feat(cli): Add docs error link to errors in the CLI (#8251)

.changeset/chatty-ways-hunt.md

@@ -0,0 +1,5 @@
+---
+'astro': patch
+---
+
+Adds a link to the error reference in the CLI when an error occurs

packages/astro/src/core/errors/dev/utils.ts

@@ -9,6 +9,7 @@ import { normalizePath } from 'vite';
 import type { SSRError } from '../../../@types/astro.js';
 import { removeLeadingForwardSlashWindows } from '../../path.js';
 import { AggregateError, type ErrorWithMetadata } from '../errors.js';
+import { AstroErrorData } from '../index.js';
 import { codeFrame } from '../printer.js';
 import { normalizeLF } from '../utils.js';
 
@@ -206,13 +207,29 @@ function cleanErrorStack(stack: string) {
 		.join('\n');
 }
 
+export function getDocsForError(err: ErrorWithMetadata): string | undefined {
+	if (err.name in AstroErrorData) {
+		return `https://docs.astro.build/en/reference/errors/${getKebabErrorName(err.name)}/`;
+	}
+
+	return undefined;
+
+	/**
+	 * The docs has kebab-case urls for errors, so we need to convert the error name
+	 * @param errorName
+	 */
+	function getKebabErrorName(errorName: string): string {
+		return errorName.replace(/([a-z])([A-Z])/g, '$1-$2').toLowerCase();
+	}
+}
+
 /**
  * Render a subset of Markdown to HTML or a CLI output
  */
 export function renderErrorMarkdown(markdown: string, target: 'html' | 'cli') {
 	const linkRegex = /\[(.+)\]\((.+)\)/gm;
 	const boldRegex = /\*\*(.+)\*\*/gm;
-	const urlRegex = / (\b(https?|ftp):\/\/[-A-Z0-9+&@#\\/%?=~_|!:,.;]*[-A-Z0-9+&@#\\/%=~_|]) /gim;
+	const urlRegex = /(\b(https?|ftp):\/\/[-A-Z0-9+&@#\\/%?=~_|!:,.;]*[-A-Z0-9+&@#\\/%=~_|])/gim;
 	const codeRegex = /`([^`]+)`/gim;
 
 	if (target === 'html') {

packages/astro/src/core/errors/dev/vite.ts

@@ -7,7 +7,7 @@ import { FailedToLoadModuleSSR, InvalidGlob, MdxIntegrationMissingError } from '
 import { AstroError, type ErrorWithMetadata } from '../errors.js';
 import { createSafeError } from '../utils.js';
 import type { SSRLoadedRenderer } from './../../../@types/astro.js';
-import { renderErrorMarkdown } from './utils.js';
+import { getDocsForError, renderErrorMarkdown } from './utils.js';
 
 export function enhanceViteSSRError({
 	error,
@@ -137,10 +137,7 @@ export async function getViteErrorPayload(err: ErrorWithMetadata): Promise<Astro
 	const message = renderErrorMarkdown(err.message.trim(), 'html');
 	const hint = err.hint ? renderErrorMarkdown(err.hint.trim(), 'html') : undefined;
 
-	const hasDocs = !!err.name;
-	const docslink = hasDocs
-		? `https://docs.astro.build/en/reference/errors/${getKebabErrorName(err.name)}/`
-		: undefined;
+	const docslink = getDocsForError(err);
 
 	const highlighter = await getHighlighter({ theme: 'css-variables' });
 	let highlighterLang = err.loc?.file?.split('.').pop();
@@ -178,12 +175,4 @@ export async function getViteErrorPayload(err: ErrorWithMetadata): Promise<Astro
 			cause: err.cause,
 		},
 	};
-
-	/**
-	 * The docs has kebab-case urls for errors, so we need to convert the error name
-	 * @param errorName
-	 */
-	function getKebabErrorName(errorName: string): string {
-		return errorName.replace(/([a-z])([A-Z])/g, '$1-$2').toLowerCase();
-	}
 }

packages/astro/src/core/messages.ts

@@ -16,7 +16,7 @@ import {
 } from 'kleur/colors';
 import type { ResolvedServerUrls } from 'vite';
 import type { ZodError } from 'zod';
-import { renderErrorMarkdown } from './errors/dev/utils.js';
+import { getDocsForError, renderErrorMarkdown } from './errors/dev/utils.js';
 import {
 	AstroError,
 	AstroUserError,
@@ -216,6 +216,11 @@ export function formatErrorMessage(err: ErrorWithMetadata, args: string[] = []):
 			yellow(padMultilineString(isOurError ? renderErrorMarkdown(err.hint, 'cli') : err.hint, 4))
 		);
 	}
+	const docsLink = getDocsForError(err);
+	if (docsLink) {
+		args.push(`  ${bold('Error reference:')}`);
+		args.push(`    ${underline(docsLink)}`);
+	}
 	if (err.id || err.loc?.file) {
 		args.push(`  ${bold('File:')}`);
 		args.push(