NonRunnablePipeline Class — astro Architecture

Source Code

packages/astro/src/core/app/dev/pipeline.ts lines 18–154

export class NonRunnablePipeline extends Pipeline {
	getName(): string {
		return 'NonRunnablePipeline';
	}

	static create({ logger, manifest, streaming }: DevPipelineCreate) {
		async function resolve(specifier: string): Promise<string> {
			if (specifier.startsWith('/')) {
				return specifier;
			} else {
				return '/@id/' + specifier;
			}
		}

		const pipeline = new NonRunnablePipeline(
			logger,
			manifest,
			'development',
			manifest.renderers,
			resolve,
			streaming,
			undefined,
			undefined,
			undefined,
			undefined,
			undefined,
			undefined,
			undefined,
			undefined,
		);
		return pipeline;
	}

	async headElements(routeData: RouteData): Promise<HeadElements> {
		const { assetsPrefix, base } = this.manifest;
		const routeInfo = this.manifest.routes.find((route) => route.routeData === routeData);
		// may be used in the future for handling rel=modulepreload, rel=icon, rel=manifest etc.
		const links = new Set<never>();
		const scripts = new Set<SSRElement>();
		const styles = createStylesheetElementSet(routeInfo?.styles ?? [], base, assetsPrefix);

		for (const script of routeInfo?.scripts ?? []) {
			if ('stage' in script) {
				if (script.stage === 'head-inline') {
					scripts.add({
						props: {},
						children: script.children,
					});
				}
			} else {
				scripts.add(createModuleScriptElement(script));
			}
		}

		scripts.add({
			props: { type: 'module', src: '/@vite/client' },
			children: '',
		});

		if (this.manifest.devToolbar.enabled) {
			scripts.add({
				props: {
					type: 'module',
					src: '/@id/astro/runtime/client/dev-toolbar/entrypoint.js',
				},
				children: '',
			});

			const additionalMetadata: DevToolbarMetadata['__astro_dev_toolbar__'] = {
				root: this.manifest.rootDir.toString(),
				version: ASTRO_VERSION,
				latestAstroVersion: this.manifest.devToolbar.latestAstroVersion,
				debugInfo: this.manifest.devToolbar.debugInfoOutput ?? '',
				placement: this.manifest.devToolbar.placement,
			};

			// Additional data for the dev overlay
			const children = `window.__astro_dev_toolbar__ = ${JSON.stringify(additionalMetadata)}`;
			scripts.add({ props: {}, children });
		}