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import matter from 'gray-matter';
import type { ErrorPayload as ViteErrorPayload } from 'vite';
/**
* Match YAML exception handling from Astro core errors
* @see 'astro/src/core/errors.ts'
*/
export function parseFrontmatter(fileContents: string, filePath: string) {
try {
// `matter` is empty string on cache results
// clear cache to prevent this
(matter as any).clearCache();
return matter(fileContents);
} catch (e: any) {
if (e.name === 'YAMLException') {
const err: Error & ViteErrorPayload['err'] = e;
err.id = filePath;
err.loc = { file: e.id, line: e.mark.line + 1, column: e.mark.column };
err.message = e.reason;
throw err;
} else {
throw e;
}
}
}
/**
* Matches AstroError object with types like error codes stubbed out
* @see 'astro/src/core/errors/errors.ts'
*/
export class MarkdocError extends Error {
public loc: ErrorLocation | undefined;
public title: string | undefined;
public hint: string | undefined;
public frame: string | undefined;
type = 'MarkdocError';
constructor(props: ErrorProperties, ...params: any) {
super(...params);
const { name, title = 'MarkdocError', message, stack, location, hint, frame } = props;
this.title = title;
if (message) this.message = message;
// Only set this if we actually have a stack passed, otherwise uses Error's
this.stack = stack ? stack : this.stack;
this.loc = location;
this.hint = hint;
this.frame = frame;
}
}
interface ErrorLocation {
file?: string;
line?: number;
column?: number;
}
interface ErrorProperties {
code?: number;
title?: string;
name?: string;
message?: string;
location?: ErrorLocation;
hint?: string;
stack?: string;
frame?: string;
}
/**
* @see 'astro/src/core/path.ts'
*/
export function prependForwardSlash(str: string) {
return str[0] === '/' ? str : '/' + str;
}
export function isValidUrl(str: string): boolean {
try {
new URL(str);
return true;
} catch {
return false;
}
}
/**
* Identifies Astro components with propagated assets
* @see 'packages/astro/src/content/consts.ts'
*/
export const PROPAGATED_ASSET_FLAG = 'astroPropagatedAssets';
/**
* @see 'packages/astro/src/content/utils.ts'
*/
export function hasContentFlag(viteId: string, flag: string): boolean {
const flags = new URLSearchParams(viteId.split('?')[1] ?? '');
return flags.has(flag);
}
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