739cc2d058
- src/lib/server/api-helpers.ts mit parsePositiveIntParam(), validateBody<T>() und ErrorResponse type - 13 unit tests fuer die beiden helper (HttpError-Shape verifiziert) - Konsolidiert spaeter 9x parseId und 11x safeParse-Bloecke aus den +server.ts handlern Findings aus REVIEW-2026-04-18.md (Refactor A) und redundancy.md
40 lines
1.3 KiB
TypeScript
40 lines
1.3 KiB
TypeScript
import { error } from '@sveltejs/kit';
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import type { ZodSchema } from 'zod';
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// Shared error body shape for SvelteKit `error()` calls. `issues` is set
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// when validateBody fails so the client can show a precise validation
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// hint; everywhere else only `message` is used.
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export type ErrorResponse = {
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message: string;
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issues?: unknown;
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};
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/**
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* Parse a route param (or query param) as a positive integer (>=1).
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* Throws SvelteKit `error(400)` with `Missing <field>` when null/undefined,
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* or `Invalid <field>` when the value is not an integer >= 1.
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*/
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export function parsePositiveIntParam(
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raw: string | undefined | null,
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field: string
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): number {
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if (raw == null) error(400, { message: `Missing ${field}` });
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const n = Number(raw);
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if (!Number.isInteger(n) || n <= 0) error(400, { message: `Invalid ${field}` });
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return n;
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}
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/**
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* Validate an unknown body against a Zod schema. Throws SvelteKit
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* `error(400, { message: 'Invalid body', issues })` on mismatch and returns
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* the typed parse result on success. Accepts `null` (the typical result of
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* `await request.json().catch(() => null)`).
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*/
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export function validateBody<T>(body: unknown, schema: ZodSchema<T>): T {
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const parsed = schema.safeParse(body);
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if (!parsed.success) {
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error(400, { message: 'Invalid body', issues: parsed.error.issues });
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}
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return parsed.data;
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}
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