feat(locales): add nl

packages/docs/content/error-customization.mdx

@@ -342,40 +342,41 @@ z.config(z.locales.en());
 
 The following locales are available:
 
-- `ar` — Arabic  
-- `az` — Azerbaijani  
-- `be` — Belarusian  
-- `ca` — Catalan  
-- `cs` — Czech  
-- `de` — German  
-- `en` — English  
-- `es` — Spanish  
-- `fa` — Farsi  
-- `fi` — Finnish  
-- `fr` — French  
-- `frCA` — Canadian French  
-- `he` — Hebrew  
-- `hu` — Hungarian  
-- `id` — Indonesian  
-- `it` — Italian  
-- `ja` — Japanese  
-- `ko` — Korean  
-- `mk` — Macedonian  
-- `ms` — Malay  
+- `ar` — Arabic
+- `az` — Azerbaijani
+- `be` — Belarusian
+- `ca` — Catalan
+- `cs` — Czech
+- `de` — German
+- `en` — English
+- `es` — Spanish
+- `fa` — Farsi
+- `fi` — Finnish
+- `fr` — French
+- `frCA` — Canadian French
+- `he` — Hebrew
+- `hu` — Hungarian
+- `id` — Indonesian
+- `it` — Italian
+- `ja` — Japanese
+- `ko` — Korean
+- `mk` — Macedonian
+- `ms` — Malay
+- `nl` — Dutch
 - `no` — Norwegian
-- `ota` — Türkî  
-- `pl` — Polish  
-- `pt` — Portuguese  
-- `ru` — Russian  
-- `sl` — Slovenian  
-- `ta` — Tamil  
-- `th` — Thai  
-- `tr` — Türkçe  
-- `ua` — Ukrainian  
-- `ur` — Urdu  
-- `vi` — Tiếng Việt  
-- `zhCN` — Simplified Chinese  
-- `zhTW` — Traditional Chinese  
+- `ota` — Türkî
+- `pl` — Polish
+- `pt` — Portuguese
+- `ru` — Russian
+- `sl` — Slovenian
+- `ta` — Tamil
+- `th` — Thai
+- `tr` — Türkçe
+- `ua` — Ukrainian
+- `ur` — Urdu
+- `vi` — Tiếng Việt
+- `zhCN` — Simplified Chinese
+- `zhTW` — Traditional Chinese
 
 
 ## Error precedence

packages/zod/src/v4/locales/index.ts

@@ -18,6 +18,7 @@ export { default as ja } from "./ja.js";
 export { default as ko } from "./ko.js";
 export { default as mk } from "./mk.js";
 export { default as ms } from "./ms.js";
+export { default as nl } from "./nl.js";
 export { default as no } from "./no.js";
 export { default as ota } from "./ota.js";
 export { default as pl } from "./pl.js";

packages/zod/src/v4/locales/nl.ts

@@ -0,0 +1,126 @@
+import type { $ZodStringFormats } from "../core/checks.js";
+import type * as errors from "../core/errors.js";
+import * as util from "../core/util.js";
+
+const Sizable: Record<string, { unit: string; }> = {
+  string: { unit: "tekens" },
+  file: { unit: "bytes" },
+  array: { unit: "elementen" },
+  set: { unit: "elementen" },
+};
+
+function getSizing(origin: string): { unit: string; } | null {
+  return Sizable[origin] ?? null;
+}
+
+export const parsedType = (data: any): string => {
+  const t = typeof data;
+
+  switch (t) {
+    case "number": {
+      return Number.isNaN(data) ? "NaN" : "getal";
+    }
+    case "object": {
+      if (Array.isArray(data)) {
+        return "array";
+      }
+      if (data === null) {
+        return "null";
+      }
+
+      if (Object.getPrototypeOf(data) !== Object.prototype && data.constructor) {
+        return data.constructor.name;
+      }
+    }
+  }
+  return t;
+};
+
+const Nouns: {
+  [k in $ZodStringFormats | (string & {})]?: string;
+} = {
+  regex: "invoer",
+  email: "emailadres",
+  url: "URL",
+  emoji: "emoji",
+  uuid: "UUID",
+  uuidv4: "UUIDv4",
+  uuidv6: "UUIDv6",
+  nanoid: "nanoid",
+  guid: "GUID",
+  cuid: "cuid",
+  cuid2: "cuid2",
+  ulid: "ULID",
+  xid: "XID",
+  ksuid: "KSUID",
+  datetime: "ISO datum en tijd",
+  date: "ISO datum",
+  time: "ISO tijd",
+  duration: "ISO duur",
+  ipv4: "IPv4-adres",
+  ipv6: "IPv6-adres",
+  cidrv4: "IPv4-bereik",
+  cidrv6: "IPv6-bereik",
+  base64: "base64-gecodeerde tekst",
+  base64url: "base64 URL-gecodeerde tekst",
+  json_string: "JSON string",
+  e164: "E.164-nummer",
+  jwt: "JWT",
+  template_literal: "invoer",
+};
+
+const error: errors.$ZodErrorMap = (issue) => {
+  switch (issue.code) {
+    case "invalid_type":
+      return `Ongeldige invoer: verwacht ${issue.expected}, ontving ${parsedType(issue.input)}`;
+    case "invalid_value":
+      if (issue.values.length === 1) return `Ongeldige invoer: verwacht ${util.stringifyPrimitive(issue.values[0])}`;
+      return `Ongeldige optie: verwacht één van ${util.joinValues(issue.values, "|")}`;
+    case "too_big": {
+      const adj = issue.inclusive ? "<=" : "<";
+      const sizing = getSizing(issue.origin);
+      if (sizing)
+        return `Te lang: verwacht dat ${issue.origin ?? "waarde"} ${adj}${issue.maximum.toString()} ${sizing.unit ?? "elementen"} bevat`;
+      return `Te lang: verwacht dat ${issue.origin ?? "waarde"} ${adj}${issue.maximum.toString()} is`;
+    }
+    case "too_small": {
+      const adj = issue.inclusive ? ">=" : ">";
+      const sizing = getSizing(issue.origin);
+      if (sizing) {
+        return `Te kort: verwacht dat ${issue.origin} ${adj}${issue.minimum.toString()} ${sizing.unit} bevat`;
+      }
+
+      return `Te kort: verwacht dat ${issue.origin} ${adj}${issue.minimum.toString()} is`;
+    }
+    case "invalid_format": {
+      const _issue = issue as errors.$ZodStringFormatIssues;
+      if (_issue.format === "starts_with") {
+        return `Ongeldige string: moet met "${_issue.prefix}" beginnen`;
+      }
+      if (_issue.format === "ends_with") return `Ongeldige tekst: moet op "${_issue.suffix}" eindigen`;
+      if (_issue.format === "includes") return `Ongeldige tekst: moet "${_issue.includes}" bevatten`;
+      if (_issue.format === "regex") return `Ongeldige tekst: moet overeenkomen met patroon ${_issue.pattern}`;
+      return `Ongeldig: ${Nouns[_issue.format] ?? issue.format}`;
+    }
+    case "not_multiple_of":
+      return `Ongeldig getal: moet een veelvoud van ${issue.divisor} zijn`;
+    case "unrecognized_keys":
+      return `Onbekende key${issue.keys.length > 1 ? "s" : ""}: ${util.joinValues(issue.keys, ", ")}`;
+    case "invalid_key":
+      return `Ongeldige key in ${issue.origin}`;
+    case "invalid_union":
+      return "Ongeldige invoer";
+    case "invalid_element":
+      return `Ongeldige waarde in ${issue.origin}`;
+    default:
+      return `Ongeldige invoer`;
+  }
+};
+
+export { error };
+
+export default function (): { localeError: errors.$ZodErrorMap } {
+  return {
+    localeError: error,
+  };
+}