chore: fix error codes

src/http/helpers/errors.ts

@@ -0,0 +1,10 @@
+export function errorText(code: number) {
+	switch (code) {
+		case 404:
+			return 'Not found';
+
+		case 400:
+			return 'Bad request';
+	}
+	return 'Internal server error';
+}

src/http/helpers/send.ts

@@ -1,5 +1,6 @@
 import type { FastifyReply, FastifyRequest } from 'fastify';
 import { checkJSONPQuery, sendJSONResponse } from './json.js';
+import { errorText } from './errors.js';
 
 type CallbackResult = object | number;
 
@@ -17,14 +18,14 @@ export function handleJSONResponse(
 	const wrap = checkJSONPQuery(q);
 	if (!wrap) {
 		// Invalid JSONP callback
-		res.send(400);
+		res.code(400).send(errorText(400));
 		return;
 	}
 
 	// Function to send response
 	const respond = (result: CallbackResult) => {
 		if (typeof result === 'number') {
-			res.send(result);
+			res.code(result).send(errorText(result));
 		} else {
 			sendJSONResponse(result, q, wrap, res);
 		}

src/http/index.ts

@@ -15,6 +15,7 @@ import { generateUpdateResponse } from './responses/update.js';
 import { initVersionResponse, versionResponse } from './responses/version.js';
 import { generateIconsStyleResponse } from './responses/css.js';
 import { handleJSONResponse } from './helpers/send.js';
+import { errorText } from './helpers/errors.js';
 
 /**
  * Start HTTP server
@@ -82,7 +83,7 @@ export async function startHTTPServer() {
 				generateSVGResponse(name.prefix, name.name, req.query, res);
 			});
 		} else {
-			res.send(404);
+			res.code(404).send(errorText(404));
 		}
 	});
 
@@ -178,7 +179,7 @@ export async function startHTTPServer() {
 
 	// Options
 	server.options('/*', (req, res) => {
-		res.send(200);
+		res.code(204).header('Content-Length', '0').send();
 	});
 
 	// Robots

src/http/responses/css.ts

@@ -5,6 +5,7 @@ import type { IconCSSIconSetOptions } from '@iconify/utils/lib/css/types';
 import { getStoredIconsData } from '../../data/icon-set/utils/get-icons.js';
 import { iconSets } from '../../data/icon-sets.js';
 import { paramToBoolean } from '../../misc/bool.js';
+import { errorText } from '../helpers/errors.js';
 
 /**
  * Check selector for weird stuff
@@ -26,7 +27,7 @@ export function generateIconsStyleResponse(prefix: string, query: FastifyRequest
 
 	if (!names || !names.length) {
 		// Missing or invalid icons parameter
-		res.send(404);
+		res.code(404).send(errorText(404));
 		return;
 	}
 
@@ -34,7 +35,7 @@ export function generateIconsStyleResponse(prefix: string, query: FastifyRequest
 	const iconSet = iconSets[prefix];
 	if (!iconSet) {
 		// No such icon set
-		res.send(404);
+		res.code(404).send(errorText(404));
 		return;
 	}
 

src/http/responses/svg.ts

@@ -7,6 +7,7 @@ import { defaultIconCustomisations, IconifyIconCustomisations } from '@iconify/u
 import type { FastifyReply, FastifyRequest } from 'fastify';
 import { getStoredIconData } from '../../data/icon-set/utils/get-icon.js';
 import { iconSets } from '../../data/icon-sets.js';
+import { errorText } from '../helpers/errors.js';
 
 /**
  * Generate SVG
@@ -16,7 +17,7 @@ export function generateSVGResponse(prefix: string, name: string, query: Fastify
 	const iconSetItem = iconSets[prefix]?.item;
 	if (!iconSetItem) {
 		// No such icon set
-		res.send(404);
+		res.code(404).send(errorText(404));
 		return;
 	}
 
@@ -24,7 +25,7 @@ export function generateSVGResponse(prefix: string, name: string, query: Fastify
 	const icons = iconSetItem.icons;
 	if (!(icons.visible[name] || icons.hidden[name]) && !iconSetItem.icons.chars?.[name]) {
 		// No such icon
-		res.send(404);
+		res.code(404).send(errorText(404));
 		return;
 	}
 
@@ -32,7 +33,7 @@ export function generateSVGResponse(prefix: string, name: string, query: Fastify
 	getStoredIconData(iconSetItem, name, (data) => {
 		if (!data) {
 			// Invalid icon
-			res.send(404);
+			res.code(404).send(errorText(404));
 			return;
 		}