astro/dist/vite-plugin-pages/page.js

Astro is a modern site builder with web best practices, performance, and DX front-of-mind.

import { prependForwardSlash } from "../core/path.js";
import { DEFAULT_COMPONENTS } from "../core/routing/default.js";
import { routeIsRedirect } from "../core/routing/helpers.js";
import { VIRTUAL_PAGE_MODULE_ID, VIRTUAL_PAGE_RESOLVED_MODULE_ID } from "./const.js";
import { ASTRO_VITE_ENVIRONMENT_NAMES } from "../core/constants.js";
export function pluginPage({ routesList }) {
	return {
		name: "@astro/plugin-page",
		applyToEnvironment(environment) {
			return environment.name === ASTRO_VITE_ENVIRONMENT_NAMES.ssr || environment.name === ASTRO_VITE_ENVIRONMENT_NAMES.prerender;
		},
		resolveId: {
			filter: { id: new RegExp(`^${VIRTUAL_PAGE_MODULE_ID}`) },
			handler(id) {
				return VIRTUAL_PAGE_RESOLVED_MODULE_ID + id.slice(VIRTUAL_PAGE_MODULE_ID.length);
			}
		},
		load: {
			filter: { id: new RegExp(`^${VIRTUAL_PAGE_RESOLVED_MODULE_ID}`) },
			handler(id) {
				const componentPath = getComponentFromVirtualModulePageName(VIRTUAL_PAGE_RESOLVED_MODULE_ID, id);
				// Skip default components (404, server islands, etc.)
				if (DEFAULT_COMPONENTS.some((component) => componentPath === component)) {
					return { code: "" };
				}
				// Find the route(s) that use this component
				const routes = routesList.routes.filter((route) => route.component === componentPath);
				for (const route of routes) {
					if (routeIsRedirect(route)) {
						continue;
					}
					const astroModuleId = prependForwardSlash(componentPath);
					const imports = [];
					const exports = [];
					imports.push(`import * as _page from ${JSON.stringify(astroModuleId)};`);
					exports.push(`export const page = () => _page`);
					return { code: `${imports.join("\n")}\n${exports.join("\n")}` };
				}
			}
		}
	};
}
/**
* From the VirtualModulePageName, get the component path.
* Remember that the component can be use by multiple routes.
*/
function getComponentFromVirtualModulePageName(virtualModulePrefix, id) {
	return id.slice(virtualModulePrefix.length).replace(/@_@/g, ".");
}