1 files changed, 82 insertions, 0 deletions
diff --git a/packages/integrations/markdoc/src/utils.ts b/packages/integrations/markdoc/src/utils.ts
new file mode 100644
index 000000000..3f2aed633
--- /dev/null
+++ b/packages/integrations/markdoc/src/utils.ts
@@ -0,0 +1,82 @@
+import type { ComponentConfig } from './config.js';
+
+/**
+ * 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 { 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);
+}
+
+/** Identifier for components imports passed as `tags` or `nodes` configuration. */
+export const componentConfigSymbol = Symbol.for('@astrojs/markdoc/component-config');
+
+export function isComponentConfig(value: unknown): value is ComponentConfig {
+	return typeof value === 'object' && value !== null && componentConfigSymbol in value;
+}