utils.ts — astro Source File

Source Code

import type { HTMLDocument, Node, TextEdit } from 'vscode-html-languageservice';
import { Range } from 'vscode-html-languageservice';
import type { AstroMetadata, FrontmatterStatus } from '../core/parseAstro.js';

export function isJSDocument(languageId: string) {
	return (
		languageId === 'javascript' ||
		languageId === 'typescript' ||
		languageId === 'javascriptreact' ||
		languageId === 'typescriptreact'
	);
}

/**
 * Return true if a specific node could be a component.
 * This is not a 100% sure test as it'll return false for any component that does not match the standard format for a component
 */
export function isPossibleComponent(node: Node): boolean {
	if (!node.tag) return false;
	return !!/[A-Z]/.test(node.tag?.[0]) || !!/.+\.[A-Z]?/.test(node.tag);
}

/**
 * Return if a given offset is inside the start tag of a component
 */
export function isInComponentStartTag(html: HTMLDocument, offset: number): boolean {
	const node = html.findNodeAt(offset);
	return isPossibleComponent(node) && (!node.startTagEnd || offset < node.startTagEnd);
}

/**
 * Return if a given position is inside a JSX expression
 */
export function isInsideExpression(html: string, tagStart: number, position: number) {
	const charactersInNode = html.substring(tagStart, position);
	return charactersInNode.lastIndexOf('{') > charactersInNode.lastIndexOf('}');
}

/**
 * Return if a given offset is inside the frontmatter
 */
export function isInsideFrontmatter(offset: number, frontmatter: FrontmatterStatus) {
	switch (frontmatter.status) {
		case 'closed':
			return offset > frontmatter.position.start.offset && offset < frontmatter.position.end.offset;
		case 'open':
			return offset > frontmatter.position.start.offset;
		case 'doesnt-exist':
			return false;
	}
}

type FrontmatterEditPosition = 'top' | 'bottom';

export function ensureProperEditForFrontmatter(
	edit: TextEdit,
	metadata: AstroMetadata,
	newLine: string,
	position: FrontmatterEditPosition = 'top',
): TextEdit {
// ... (102 more lines)