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import { parseFrontmatter } from '@astrojs/markdown-remark';
import type { Options as AcornOpts } from 'acorn';
import { parse } from 'acorn';
import type { AstroConfig, AstroIntegrationLogger, SSRError } from 'astro';
import { bold } from 'kleur/colors';
import type { MdxjsEsm } from 'mdast-util-mdx';
import type { PluggableList } from 'unified';
function appendForwardSlash(path: string) {
return path.endsWith('/') ? path : path + '/';
}
export interface FileInfo {
fileId: string;
fileUrl: string;
}
/** @see 'vite-plugin-utils' for source */
export function getFileInfo(id: string, config: AstroConfig): FileInfo {
const sitePathname = appendForwardSlash(
config.site ? new URL(config.base, config.site).pathname : config.base,
);
// Try to grab the file's actual URL
let url: URL | undefined = undefined;
try {
url = new URL(`file://${id}`);
} catch {}
const fileId = id.split('?')[0];
let fileUrl: string;
const isPage = fileId.includes('/pages/');
if (isPage) {
fileUrl = fileId.replace(/^.*?\/pages\//, sitePathname).replace(/(?:\/index)?\.mdx$/, '');
} else if (url?.pathname.startsWith(config.root.pathname)) {
fileUrl = url.pathname.slice(config.root.pathname.length);
} else {
fileUrl = fileId;
}
if (fileUrl && config.trailingSlash === 'always') {
fileUrl = appendForwardSlash(fileUrl);
}
return { fileId, fileUrl };
}
/**
* Match YAML exception handling from Astro core errors
* @see 'astro/src/core/errors.ts'
*/
export function safeParseFrontmatter(code: string, id: string) {
try {
return parseFrontmatter(code, { frontmatter: 'empty-with-spaces' });
} catch (e: any) {
if (e.name === 'YAMLException') {
const err: SSRError = e;
err.id = id;
err.loc = { file: e.id, line: e.mark.line + 1, column: e.mark.column };
err.message = e.reason;
throw err;
} else {
throw e;
}
}
}
export function jsToTreeNode(
jsString: string,
acornOpts: AcornOpts = {
ecmaVersion: 'latest',
sourceType: 'module',
},
): MdxjsEsm {
return {
type: 'mdxjsEsm',
value: '',
data: {
// @ts-expect-error `parse` return types is incompatible but it should work in runtime
estree: {
...parse(jsString, acornOpts),
type: 'Program',
sourceType: 'module',
},
},
};
}
export function ignoreStringPlugins(plugins: any[], logger: AstroIntegrationLogger): PluggableList {
let validPlugins: PluggableList = [];
let hasInvalidPlugin = false;
for (const plugin of plugins) {
if (typeof plugin === 'string') {
logger.warn(`${bold(plugin)} not applied.`);
hasInvalidPlugin = true;
} else if (Array.isArray(plugin) && typeof plugin[0] === 'string') {
logger.warn(`${bold(plugin[0])} not applied.`);
hasInvalidPlugin = true;
} else {
validPlugins.push(plugin);
}
}
if (hasInvalidPlugin) {
logger.warn(
`To inherit Markdown plugins in MDX, please use explicit imports in your config instead of "strings." See Markdown docs: https://docs.astro.build/en/guides/markdown-content/#markdown-plugins`,
);
}
return validPlugins;
}
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