refactor: upgrade to Zod v4 (#623)

frontend/messages/en.json

@@ -144,8 +144,6 @@
 	"expires_at": "Expires At",
 	"when_this_api_key_will_expire": "When this API key will expire.",
 	"optional_description_to_help_identify_this_keys_purpose": "Optional description to help identify this key's purpose.",
-	"name_must_be_at_least_3_characters": "Name must be at least 3 characters",
-	"name_cannot_exceed_50_characters": "Name cannot exceed 50 characters",
 	"expiration_date_must_be_in_the_future": "Expiration date must be in the future",
 	"revoke_api_key": "Revoke API Key",
 	"never": "Never",

frontend/package-lock.json

@@ -1,12 +1,12 @@
 {
   "name": "pocket-id-frontend",
-  "version": "1.1.0",
+  "version": "1.2.0",
   "lockfileVersion": 3,
   "requires": true,
   "packages": {
     "": {
       "name": "pocket-id-frontend",
-      "version": "1.1.0",
+      "version": "1.2.0",
       "dependencies": {
         "@lucide/svelte": "^0.511.0",
         "@simplewebauthn/browser": "^13.1.0",
@@ -16,9 +16,10 @@
         "crypto": "^1.0.1",
         "jose": "^5.9.6",
         "qrcode": "^1.5.4",
+        "rollup-plugin-visualizer": "^6.0.1",
         "sveltekit-superforms": "^2.23.1",
         "tailwind-merge": "^3.3.0",
-        "zod": "^3.24.1"
+        "zod": "^3.25.55"
       },
       "devDependencies": {
         "@inlang/paraglide-js": "^2.0.13",
@@ -2412,6 +2413,15 @@
         "node": ">=0.10.0"
       }
     },
+    "node_modules/define-lazy-prop": {
+      "version": "2.0.0",
+      "resolved": "https://registry.npmjs.org/define-lazy-prop/-/define-lazy-prop-2.0.0.tgz",
+      "integrity": "sha512-Ds09qNh8yw3khSjiJjiUInaGX9xlqZDY7JVryGxdxV7NPeuqQfplOpQ66yJFZut3jLa5zOwkXw1g9EI2uKh4Og==",
+      "license": "MIT",
+      "engines": {
+        "node": ">=8"
+      }
+    },
     "node_modules/delayed-stream": {
       "version": "1.0.0",
       "resolved": "https://registry.npmjs.org/delayed-stream/-/delayed-stream-1.0.0.tgz",
@@ -2536,6 +2546,15 @@
       "integrity": "sha512-d6xOpEDfsi2CZVlPQzGeux8XMwLT9hssAsaPYExaQMuYskwb+x1x7J371tWlbBdWHroy99KnVB6qIkUbs5X3UQ==",
       "optional": true
     },
+    "node_modules/escalade": {
+      "version": "3.2.0",
+      "resolved": "https://registry.npmjs.org/escalade/-/escalade-3.2.0.tgz",
+      "integrity": "sha512-WUj2qlxaQtO4g6Pq5c29GTcWGDyd8itL8zTlipgECz3JesAiiOKotd8JU6otB3PACgG6xkJUyVhboMS+bje/jA==",
+      "license": "MIT",
+      "engines": {
+        "node": ">=6"
+      }
+    },
     "node_modules/escape-string-regexp": {
       "version": "4.0.0",
       "resolved": "https://registry.npmjs.org/escape-string-regexp/-/escape-string-regexp-4.0.0.tgz",
@@ -3156,6 +3175,21 @@
       "dev": true,
       "license": "MIT"
     },
+    "node_modules/is-docker": {
+      "version": "2.2.1",
+      "resolved": "https://registry.npmjs.org/is-docker/-/is-docker-2.2.1.tgz",
+      "integrity": "sha512-F+i2BKsFrH66iaUFc0woD8sLy8getkwTwtOBjvs56Cx4CgJDeKQeqfz8wAYiSb8JOprWhHH5p77PbmYCvvUuXQ==",
+      "license": "MIT",
+      "bin": {
+        "is-docker": "cli.js"
+      },
+      "engines": {
+        "node": ">=8"
+      },
+      "funding": {
+        "url": "https://github.com/sponsors/sindresorhus"
+      }
+    },
     "node_modules/is-extglob": {
       "version": "2.1.1",
       "resolved": "https://registry.npmjs.org/is-extglob/-/is-extglob-2.1.1.tgz",
@@ -3195,6 +3229,18 @@
         "node": ">=0.12.0"
       }
     },
+    "node_modules/is-wsl": {
+      "version": "2.2.0",
+      "resolved": "https://registry.npmjs.org/is-wsl/-/is-wsl-2.2.0.tgz",
+      "integrity": "sha512-fKzAra0rGJUUBwGBgNkHZuToZcn+TtXHpeCgmkMJMMYx1sQDYaCSyjJBSCa2nH1DGm7s3n1oBnohoVTBaN7Lww==",
+      "license": "MIT",
+      "dependencies": {
+        "is-docker": "^2.0.0"
+      },
+      "engines": {
+        "node": ">=8"
+      }
+    },
     "node_modules/isexe": {
       "version": "2.0.0",
       "resolved": "https://registry.npmjs.org/isexe/-/isexe-2.0.0.tgz",
@@ -3791,6 +3837,23 @@
         "url": "https://github.com/sponsors/sindresorhus"
       }
     },
+    "node_modules/open": {
+      "version": "8.4.2",
+      "resolved": "https://registry.npmjs.org/open/-/open-8.4.2.tgz",
+      "integrity": "sha512-7x81NCL719oNbsq/3mh+hVrAWmFuEYUqrq/Iw3kUzH8ReypT9QQ0BLoJS7/G9k6N81XjW4qHWtjWwe/9eLy1EQ==",
+      "license": "MIT",
+      "dependencies": {
+        "define-lazy-prop": "^2.0.0",
+        "is-docker": "^2.1.1",
+        "is-wsl": "^2.2.0"
+      },
+      "engines": {
+        "node": ">=12"
+      },
+      "funding": {
+        "url": "https://github.com/sponsors/sindresorhus"
+      }
+    },
     "node_modules/optionator": {
       "version": "0.9.4",
       "resolved": "https://registry.npmjs.org/optionator/-/optionator-0.9.4.tgz",
@@ -4356,6 +4419,112 @@
         "fsevents": "~2.3.2"
       }
     },
+    "node_modules/rollup-plugin-visualizer": {
+      "version": "6.0.1",
+      "resolved": "https://registry.npmjs.org/rollup-plugin-visualizer/-/rollup-plugin-visualizer-6.0.1.tgz",
+      "integrity": "sha512-NjlGElvLXCSZSAi3gNRZbfX3qlQbQcJ9TW97c5JpqfVwMhttj9YwEdPwcvbKj91RnMX2PWAjonvSEv6UEYtnRQ==",
+      "license": "MIT",
+      "dependencies": {
+        "open": "^8.0.0",
+        "picomatch": "^4.0.2",
+        "source-map": "^0.7.4",
+        "yargs": "^17.5.1"
+      },
+      "bin": {
+        "rollup-plugin-visualizer": "dist/bin/cli.js"
+      },
+      "engines": {
+        "node": ">=18"
+      },
+      "peerDependencies": {
+        "rolldown": "1.x",
+        "rollup": "2.x || 3.x || 4.x"
+      },
+      "peerDependenciesMeta": {
+        "rolldown": {
+          "optional": true
+        },
+        "rollup": {
+          "optional": true
+        }
+      }
+    },
+    "node_modules/rollup-plugin-visualizer/node_modules/cliui": {
+      "version": "8.0.1",
+      "resolved": "https://registry.npmjs.org/cliui/-/cliui-8.0.1.tgz",
+      "integrity": "sha512-BSeNnyus75C4//NQ9gQt1/csTXyo/8Sb+afLAkzAptFuMsod9HFokGNudZpi/oQV73hnVK+sR+5PVRMd+Dr7YQ==",
+      "license": "ISC",
+      "dependencies": {
+        "string-width": "^4.2.0",
+        "strip-ansi": "^6.0.1",
+        "wrap-ansi": "^7.0.0"
+      },
+      "engines": {
+        "node": ">=12"
+      }
+    },
+    "node_modules/rollup-plugin-visualizer/node_modules/source-map": {
+      "version": "0.7.4",
+      "resolved": "https://registry.npmjs.org/source-map/-/source-map-0.7.4.tgz",
+      "integrity": "sha512-l3BikUxvPOcn5E74dZiq5BGsTb5yEwhaTSzccU6t4sDOH8NWJCstKO5QT2CvtFoK6F0saL7p9xHAqHOlCPJygA==",
+      "license": "BSD-3-Clause",
+      "engines": {
+        "node": ">= 8"
+      }
+    },
+    "node_modules/rollup-plugin-visualizer/node_modules/wrap-ansi": {
+      "version": "7.0.0",
+      "resolved": "https://registry.npmjs.org/wrap-ansi/-/wrap-ansi-7.0.0.tgz",
+      "integrity": "sha512-YVGIj2kamLSTxw6NsZjoBxfSwsn0ycdesmc4p+Q21c5zPuZ1pl+NfxVdxPtdHvmNVOQ6XSYG4AUtyt/Fi7D16Q==",
+      "license": "MIT",
+      "dependencies": {
+        "ansi-styles": "^4.0.0",
+        "string-width": "^4.1.0",
+        "strip-ansi": "^6.0.0"
+      },
+      "engines": {
+        "node": ">=10"
+      },
+      "funding": {
+        "url": "https://github.com/chalk/wrap-ansi?sponsor=1"
+      }
+    },
+    "node_modules/rollup-plugin-visualizer/node_modules/y18n": {
+      "version": "5.0.8",
+      "resolved": "https://registry.npmjs.org/y18n/-/y18n-5.0.8.tgz",
+      "integrity": "sha512-0pfFzegeDWJHJIAmTLRP2DwHjdF5s7jo9tuztdQxAhINCdvS+3nGINqPd00AphqJR/0LhANUS6/+7SCb98YOfA==",
+      "license": "ISC",
+      "engines": {
+        "node": ">=10"
+      }
+    },
+    "node_modules/rollup-plugin-visualizer/node_modules/yargs": {
+      "version": "17.7.2",
+      "resolved": "https://registry.npmjs.org/yargs/-/yargs-17.7.2.tgz",
+      "integrity": "sha512-7dSzzRQ++CKnNI/krKnYRV7JKKPUXMEh61soaHKg9mrWEhzFWhFnxPxGl+69cD1Ou63C13NUPCnmIcrvqCuM6w==",
+      "license": "MIT",
+      "dependencies": {
+        "cliui": "^8.0.1",
+        "escalade": "^3.1.1",
+        "get-caller-file": "^2.0.5",
+        "require-directory": "^2.1.1",
+        "string-width": "^4.2.3",
+        "y18n": "^5.0.5",
+        "yargs-parser": "^21.1.1"
+      },
+      "engines": {
+        "node": ">=12"
+      }
+    },
+    "node_modules/rollup-plugin-visualizer/node_modules/yargs-parser": {
+      "version": "21.1.1",
+      "resolved": "https://registry.npmjs.org/yargs-parser/-/yargs-parser-21.1.1.tgz",
+      "integrity": "sha512-tVpsJW7DdjecAiFpbIB1e3qxIQsE6NoPc5/eTdrbbIC4h0LVsWhnoa3g+m2HclBIujHzsxZ4VJVA+GUuc2/LBw==",
+      "license": "ISC",
+      "engines": {
+        "node": ">=12"
+      }
+    },
     "node_modules/run-parallel": {
       "version": "1.2.0",
       "resolved": "https://registry.npmjs.org/run-parallel/-/run-parallel-1.2.0.tgz",
@@ -5458,9 +5627,10 @@
       "integrity": "sha512-rAbqEGa8ovJy4pyBxZM70hg4pE6gDgaQ0Sl9M3enG3I0d6H4XSAM3GeNGLKnsBpuijUow064sf7ww1nutC5/3w=="
     },
     "node_modules/zod": {
-      "version": "3.24.1",
-      "resolved": "https://registry.npmjs.org/zod/-/zod-3.24.1.tgz",
-      "integrity": "sha512-muH7gBL9sI1nciMZV67X5fTKKBLtwpZ5VBp1vsOQzj1MhrBZ4wlVCm3gedKZWLp0Oyel8sIGfeiz54Su+OVT+A==",
+      "version": "3.25.55",
+      "resolved": "https://registry.npmjs.org/zod/-/zod-3.25.55.tgz",
+      "integrity": "sha512-219huNnkSLQnLsQ3uaRjXsxMrVm5C9W3OOpEVt2k5tvMKuA8nBSu38e0B//a+he9Iq2dvmk2VyYVlHqiHa4YBA==",
+      "license": "MIT",
       "funding": {
         "url": "https://github.com/sponsors/colinhacks"
       }

frontend/package.json

@@ -23,7 +23,7 @@
     "qrcode": "^1.5.4",
     "sveltekit-superforms": "^2.23.1",
     "tailwind-merge": "^3.3.0",
-    "zod": "^3.24.1"
+    "zod": "^3.25.55"
   },
   "devDependencies": {
     "@inlang/paraglide-js": "^2.0.13",

frontend/src/lib/stores/user-store.ts

@@ -1,12 +1,12 @@
-import { setLocale } from '$lib/paraglide/runtime';
 import type { User } from '$lib/types/user.type';
+import { setLocale } from '$lib/utils/locale.util';
 import { writable } from 'svelte/store';
 
 const userStore = writable<User | null>(null);
 
 const setUser = (user: User) => {
 	if (user.locale) {
-		setLocale(user.locale, { reload: false });
+		setLocale(user.locale, false);
 	}
 	userStore.set(user);
 };

frontend/src/lib/types/oidc.type.ts

@@ -10,7 +10,7 @@ export type OidcClientFederatedIdentity = {
 	issuer: string;
 	subject?: string;
 	audience?: string;
-	jwks?: string;
+	jwks: string | undefined;
 };
 
 export type OidcClientCredentials = {
@@ -18,7 +18,7 @@ export type OidcClientCredentials = {
 };
 
 export type OidcClient = OidcClientMetaData & {
-	callbackURLs: string[]; // No longer requires at least one URL
+	callbackURLs: string[];
 	logoutCallbackURLs: string[];
 	isPublic: boolean;
 	pkceEnabled: boolean;

frontend/src/lib/utils/form-util.ts

@@ -1,5 +1,5 @@
-import { writable } from 'svelte/store';
-import { z } from 'zod';
+import { get, writable } from 'svelte/store';
+import { z } from 'zod/v4';
 
 export type FormInput<T> = {
 	value: T;
@@ -13,6 +13,7 @@ type FormInputs<T> = {
 export function createForm<T extends z.ZodType<any, any>>(schema: T, initialValues: z.infer<T>) {
 	// Create a writable store for the inputs
 	const inputsStore = writable<FormInputs<z.infer<T>>>(initializeInputs(initialValues));
+	const errorsStore = writable<z.ZodError<any> | undefined>();
 
 	function initializeInputs(initialValues: z.infer<T>): FormInputs<z.infer<T>> {
 		const inputs: FormInputs<z.infer<T>> = {} as FormInputs<z.infer<T>>;
@@ -36,11 +37,12 @@ export function createForm<T extends z.ZodType<any, any>>(schema: T, initialValu
 			);
 
 			const result = schema.safeParse(values);
+			errorsStore.set(result.error);
 
 			if (!result.success) {
 				success = false;
 				for (const input of Object.keys(inputs)) {
-					const error = result.error.errors.find((e) => e.path[0] === input);
+					const error = result.error.issues.find((e) => e.path[0] === input);
 					if (error) {
 						inputs[input as keyof z.infer<T>].error = error.message;
 					} else {
@@ -58,15 +60,14 @@ export function createForm<T extends z.ZodType<any, any>>(schema: T, initialValu
 	}
 
 	function data() {
-		let values: z.infer<T> | null = null;
-		inputsStore.subscribe((inputs) => {
-			values = Object.fromEntries(
-				Object.entries(inputs).map(([key, input]) => {
-					input.value = trimValue(input.value);
-					return [key, input.value];
-				})
-			) as z.infer<T>;
-		})();
+		const inputs = get(inputsStore);
+
+		const values = Object.fromEntries(
+			Object.entries(inputs).map(([key, input]) => {
+				input.value = trimValue(input.value);
+				return [key, input.value];
+			})
+		) as z.infer<T>;
 
 		return values;
 	}
@@ -108,6 +109,7 @@ export function createForm<T extends z.ZodType<any, any>>(schema: T, initialValu
 	return {
 		schema,
 		inputs: inputsStore,
+		errors: errorsStore,
 		data,
 		validate,
 		setValue,

frontend/src/lib/utils/locale.util.ts

@@ -0,0 +1,10 @@
+import { setLocale as setParaglideLocale, type Locale } from '$lib/paraglide/runtime';
+import { z } from 'zod/v4';
+
+export function setLocale(locale: Locale, reload = true) {
+	import(`../../../node_modules/zod/dist/esm/v4/locales/${locale}.js`)
+		.then((zodLocale) => z.config(zodLocale.default()))
+		.finally(() => {
+			setParaglideLocale(locale, { reload });
+		});
+}

frontend/src/routes/settings/account/account-form.svelte

@@ -9,7 +9,7 @@
 	import { preventDefault } from '$lib/utils/event-util';
 	import { createForm } from '$lib/utils/form-util';
 	import { toast } from 'svelte-sonner';
-	import { z } from 'zod';
+	import { z } from 'zod/v4';
 
 	let {
 		callback,
@@ -35,7 +35,7 @@
 			.min(2)
 			.max(30)
 			.regex(/^[a-z0-9_@.-]+$/, m.username_can_only_contain()),
-		email: z.string().email(),
+		email: z.email(),
 		isAdmin: z.boolean()
 	});
 	type FormSchema = typeof formSchema;

frontend/src/routes/settings/account/locale-picker.svelte

@@ -1,8 +1,9 @@
 <script lang="ts">
 	import * as Select from '$lib/components/ui/select';
-	import { getLocale, setLocale, type Locale } from '$lib/paraglide/runtime';
+	import { getLocale, type Locale } from '$lib/paraglide/runtime';
 	import UserService from '$lib/services/user-service';
 	import userStore from '$lib/stores/user-store';
+	import { setLocale } from '$lib/utils/locale.util';
 
 	const userService = new UserService();
 	const currentLocale = getLocale();

frontend/src/routes/settings/admin/api-keys/api-key-form.svelte

@@ -5,7 +5,7 @@
 	import type { ApiKeyCreate } from '$lib/types/api-key.type';
 	import { preventDefault } from '$lib/utils/event-util';
 	import { createForm } from '$lib/utils/form-util';
-	import { z } from 'zod';
+	import { z } from 'zod/v4';
 
 	let {
 		callback
@@ -28,8 +28,8 @@
 	const formSchema = z.object({
 		name: z
 			.string()
-			.min(3, m.name_must_be_at_least_3_characters())
-			.max(50, m.name_cannot_exceed_50_characters()),
+			.min(3)
+			.max(50),
 		description: z.string().default(''),
 		expiresAt: z.date().min(new Date(), m.expiration_date_must_be_in_the_future())
 	});

frontend/src/routes/settings/admin/application-configuration/forms/app-config-email-form.svelte

@@ -12,7 +12,7 @@
 	import { preventDefault } from '$lib/utils/event-util';
 	import { createForm } from '$lib/utils/form-util';
 	import { toast } from 'svelte-sonner';
-	import { z } from 'zod';
+	import { z } from 'zod/v4';
 
 	let {
 		callback,
@@ -36,7 +36,7 @@
 		smtpPort: z.number().min(1),
 		smtpUser: z.string(),
 		smtpPassword: z.string(),
-		smtpFrom: z.string().email(),
+		smtpFrom: z.email(),
 		smtpTls: z.enum(['none', 'starttls', 'tls']),
 		smtpSkipCertVerify: z.boolean(),
 		emailOneTimeAccessAsUnauthenticatedEnabled: z.boolean(),

frontend/src/routes/settings/admin/application-configuration/forms/app-config-general-form.svelte

@@ -8,7 +8,7 @@
 	import { preventDefault } from '$lib/utils/event-util';
 	import { createForm } from '$lib/utils/form-util';
 	import { toast } from 'svelte-sonner';
-	import { z } from 'zod';
+	import { z } from 'zod/v4';
 
 	let {
 		callback,

frontend/src/routes/settings/admin/application-configuration/forms/app-config-ldap-form.svelte

@@ -10,7 +10,7 @@
 	import { preventDefault } from '$lib/utils/event-util';
 	import { createForm } from '$lib/utils/form-util';
 	import { toast } from 'svelte-sonner';
-	import { z } from 'zod';
+	import { z } from 'zod/v4';
 
 	let {
 		callback,
@@ -48,7 +48,7 @@
 	};
 
 	const formSchema = z.object({
-		ldapUrl: z.string().url(),
+		ldapUrl: z.url(),
 		ldapBindDn: z.string().min(1),
 		ldapBindPassword: z.string().min(1),
 		ldapBase: z.string().min(1),

frontend/src/routes/settings/admin/oidc-clients/federated-identities-input.svelte

@@ -8,16 +8,18 @@
 	import { LucideMinus, LucidePlus } from '@lucide/svelte';
 	import type { Snippet } from 'svelte';
 	import type { HTMLAttributes } from 'svelte/elements';
+	import { z } from 'zod/v4';
 
 	let {
 		client,
 		federatedIdentities = $bindable([]),
-		error = $bindable(null),
+		errors,
 		...restProps
 	}: HTMLAttributes<HTMLDivElement> & {
 		client?: OidcClient;
 		federatedIdentities: OidcClientFederatedIdentity[];
-		error?: string | null;
+		errors?: z.core.$ZodIssue[];
+
 		children?: Snippet;
 	} = $props();
 
@@ -47,6 +49,13 @@
 			[field]: value
 		};
 	}
+
+	function getFieldError(index: number, field: keyof OidcClientFederatedIdentity): string | null {
+		console.log(federatedIdentities)
+		if (!errors) return null;
+		const path = [index, field];
+		return errors?.filter((e) => e.path[0] == path[0] && e.path[1] == path[1])[0]?.message;
+	}
 </script>
 
 <div {...restProps}>
@@ -76,8 +85,11 @@
 								placeholder="https://example.com/"
 								value={identity.issuer}
 								oninput={(e) => updateFederatedIdentity(i, 'issuer', e.currentTarget.value)}
-								required
+								aria-invalid={!!getFieldError(i, 'issuer')}
 							/>
+							{#if getFieldError(i, 'issuer')}
+								<p class="text-destructive mt-1 text-xs">{getFieldError(i, 'issuer')}</p>
+							{/if}
 						</div>
 
 						<div>
@@ -87,7 +99,11 @@
 								placeholder="Defaults to the client ID: {client?.id}"
 								value={identity.subject || ''}
 								oninput={(e) => updateFederatedIdentity(i, 'subject', e.currentTarget.value)}
+								aria-invalid={!!getFieldError(i, 'subject')}
 							/>
+							{#if getFieldError(i, 'subject')}
+								<p class="text-destructive mt-1 text-xs">{getFieldError(i, 'subject')}</p>
+							{/if}
 						</div>
 
 						<div>
@@ -97,7 +113,11 @@
 								placeholder="Defaults to the Pocket ID URL"
 								value={identity.audience || ''}
 								oninput={(e) => updateFederatedIdentity(i, 'audience', e.currentTarget.value)}
+								aria-invalid={!!getFieldError(i, 'audience')}
 							/>
+							{#if getFieldError(i, 'audience')}
+								<p class="text-destructive mt-1 text-xs">{getFieldError(i, 'audience')}</p>
+							{/if}
 						</div>
 
 						<div>
@@ -107,7 +127,11 @@
 								placeholder="Defaults to {identity.issuer || '<issuer>'}/.well-known/jwks.json"
 								value={identity.jwks || ''}
 								oninput={(e) => updateFederatedIdentity(i, 'jwks', e.currentTarget.value)}
+								aria-invalid={!!getFieldError(i, 'jwks')}
 							/>
+							{#if getFieldError(i, 'jwks')}
+								<p class="text-destructive mt-1 text-xs">{getFieldError(i, 'jwks')}</p>
+							{/if}
 						</div>
 					</div>
 				</div>
@@ -115,10 +139,6 @@
 		</div>
 	</FormInput>
 
-	{#if error}
-		<p class="text-destructive mt-1 text-xs">{error}</p>
-	{/if}
-
 	<Button class="mt-3" variant="secondary" size="sm" onclick={addFederatedIdentity} type="button">
 		<LucidePlus class="mr-1 size-4" />
 		{federatedIdentities.length === 0

frontend/src/routes/settings/admin/oidc-clients/oidc-client-form.svelte

@@ -11,7 +11,7 @@
 	import { cn } from '$lib/utils/style';
 	import { LucideChevronDown } from '@lucide/svelte';
 	import { slide } from 'svelte/transition';
-	import { z } from 'zod';
+	import { z } from 'zod/v4';
 	import FederatedIdentitiesInput from './federated-identities-input.svelte';
 	import OidcCallbackUrlInput from './oidc-callback-url-input.svelte';
 
@@ -50,17 +50,17 @@
 		credentials: z.object({
 			federatedIdentities: z.array(
 				z.object({
-					issuer: z.string().url(),
+					issuer: z.url(),
 					subject: z.string().optional(),
 					audience: z.string().optional(),
-					jwks: z.string().url().optional().or(z.literal(''))
+					jwks: z.url().optional().or(z.literal(''))
 				})
 			)
 		})
 	});
 
 	type FormSchema = typeof formSchema;
-	const { inputs, ...form } = createForm<FormSchema>(formSchema, client);
+	const { inputs, errors, ...form } = createForm<FormSchema>(formSchema, client);
 
 	async function onSubmit() {
 		const data = form.validate();
@@ -91,6 +91,15 @@
 		logo = null;
 		logoDataURL = null;
 	}
+
+	function getFederatedIdentityErrors(errors: z.ZodError<any> | undefined) {
+		return errors?.issues
+			.filter((e) => e.path[0] == 'credentials' && e.path[1] == 'federatedIdentities')
+			.map((e) => {
+				e.path.splice(0, 2);
+				return e;
+			});
+	}
 </script>
 
 <form onsubmit={preventDefault(onSubmit)}>
@@ -159,7 +168,7 @@
 			<FederatedIdentitiesInput
 				client={existingClient}
 				bind:federatedIdentities={$inputs.credentials.value.federatedIdentities}
-				bind:error={$inputs.credentials.error}
+				errors={getFederatedIdentityErrors($errors)}
 			/>
 		</div>
 	{/if}

frontend/src/routes/settings/admin/user-groups/user-group-form.svelte

@@ -6,7 +6,7 @@
 	import type { UserGroupCreate } from '$lib/types/user-group.type';
 	import { preventDefault } from '$lib/utils/event-util';
 	import { createForm } from '$lib/utils/form-util';
-	import { z } from 'zod';
+	import { z } from 'zod/v4';
 
 	let {
 		callback,

frontend/src/routes/settings/admin/users/user-form.svelte

@@ -7,7 +7,7 @@
 	import type { User, UserCreate } from '$lib/types/user.type';
 	import { preventDefault } from '$lib/utils/event-util';
 	import { createForm } from '$lib/utils/form-util';
-	import { z } from 'zod';
+	import { z } from 'zod/v4';
 
 	let {
 		callback,
@@ -37,7 +37,7 @@
 			.min(2)
 			.max(30)
 			.regex(/^[a-z0-9_@.-]+$/, m.username_can_only_contain()),
-		email: z.string().email(),
+		email: z.email(),
 		isAdmin: z.boolean(),
 		disabled: z.boolean()
 	});

tests/specs/account-settings.spec.ts

@@ -57,11 +57,20 @@ test("Change Locale", async ({ page }) => {
   // Check if th language heading now says 'Taal' instead of 'Language'
   await expect(page.getByText("Taal", { exact: true })).toBeVisible();
 
+  // Check if the validation messages are translated because they are provided by Zod
+  await page.getByRole("textbox", { name: "Voornaam" }).fill("");
+  await page.getByRole("button", { name: "Opslaan" }).click();
+  await expect(page.getByText("Te kort: verwacht dat string")).toBeVisible();
+
   // Clear all cookies and sign in again to check if the language is still set to Dutch
   await page.context().clearCookies();
   await authUtil.authenticate(page);
 
   await expect(page.getByText("Taal", { exact: true })).toBeVisible();
+
+  await page.getByRole("textbox", { name: "Voornaam" }).fill("");
+  await page.getByRole("button", { name: "Opslaan" }).click();
+  await expect(page.getByText("Te kort: verwacht dat string")).toBeVisible();
 });
 
 test("Add passkey to an account", async ({ page }) => {