astro/dist/core/routing/params.js

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

import { hasFileExtension } from "@astrojs/internal-helpers/path";
import { trimSlashes } from "../path.js";
import { getRouteGenerator } from "./generator.js";
import { validateGetStaticPathsParameter } from "./internal/validation.js";
/**
* given a route's Params object, validate parameter
* values and create a stringified key for the route
* that can be used to match request routes
*/
export function stringifyParams(params, route, trailingSlash) {
	// Endpoint routes with file extensions (e.g. [slug].png.ts) should never
	// append a trailing slash, matching the pattern generated in create-manifest.ts
	// by trailingSlashForPath(). Without this, the generated path (e.g. /og/foo.png/)
	// won't match the route pattern (e.g. /^\/og\/(.*?)\.png$/) and getParams() fails.
	if (route.type === "endpoint" && hasFileExtension(route.route)) {
		trailingSlash = "never";
	}
	// validate parameter values then stringify each value
	const validatedParams = {};
	for (const [key, value] of Object.entries(params)) {
		validateGetStaticPathsParameter([key, value], route.component);
		if (value !== undefined) {
			validatedParams[key] = trimSlashes(value);
		}
	}
	return getRouteGenerator(route.segments, trailingSlash)(validatedParams);
}