Max P.
8235680904
- Consolidates `Handler` and `Middleware` types under `Types` module - Replaces `IHandler` and `IMiddleware` interfaces with typed functions - Simplifies imports and improves code organization - Enhances debugging with named handlers and middlewares
55 lines
1.6 KiB
TypeScript
55 lines
1.6 KiB
TypeScript
// createRouteMatcher.ts
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import {
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IRouteDefinition,
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IRouteMatch,
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IRouteMatcher,
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isDynamicRouteDefinition,
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} from '../Interfaces/mod.ts';
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import { Params, Query } from '../Types/mod.ts';
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/**
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* Transforms a route definition into a matcher using Deno's URLPattern API.
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*
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* @param def - Static path pattern or custom matcher.
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* @returns IRouteMatcher that returns `{ params, query }` or `null`.
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*/
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export function createRouteMatcher(
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def: IRouteDefinition,
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): IRouteMatcher {
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// 1. Allow users to provide their own matcher
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if (isDynamicRouteDefinition(def)) {
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return def.matcher;
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}
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// 2. Build URLPattern; supports :id, *wildcards, regex groups, etc.
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const pattern = new URLPattern({ pathname: def.path });
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// 3. The actual matcher closure
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return (url: URL): IRouteMatch | null => {
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const result = pattern.exec(url);
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// 3a. Path did not match
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if (!result) return null;
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// 3b. Extract route params
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const params: Params = {};
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for (const [key, value] of Object.entries(result.pathname.groups)) {
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if (value) {
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params[key] = value;
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}
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}
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// 3c. Extract query parameters – keep duplicates as arrays
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const query: Query = {};
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for (const key of url.searchParams.keys()) {
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const values = url.searchParams.getAll(key); // → string[]
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query[key] = values.length === 1
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? values[0] // single → "foo"
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: values; // multi → ["foo","bar"]
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}
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return { params, query };
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};
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}
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