FrontmatterHolder Class — astro Architecture

Source Code

packages/language-tools/ts-plugin/src/frontmatter.ts lines 86–127

export class FrontmatterHolder implements VirtualCode {
	id = 'frontmatter-holder';
	mappings: CodeMapping[];
	embeddedCodes: VirtualCode[];

	constructor(
		public fileName: string,
		public languageId: string,
		public snapshot: ts.IScriptSnapshot,
		public collection: string | undefined,
	) {
		this.mappings = [
			{
				sourceOffsets: [0],
				generatedOffsets: [0],
				lengths: [this.snapshot.getLength()],
				data: {
					verification: true,
					completion: true,
					semantic: true,
					navigation: true,
					structure: true,
					format: true,
				},
			},
		];

		this.embeddedCodes = [];
		this.snapshot = snapshot;

		if (!this.collection) return;

		const frontmatterContent = frontmatterRE.exec(
			this.snapshot.getText(0, this.snapshot.getLength()),
		)?.[0];

		if (!frontmatterContent) return;

		const yaml2tsResult = yaml2ts(frontmatterContent, this.collection);
		this.embeddedCodes.push(yaml2tsResult.virtualCode);
	}
}