feat(locales): add Danish translations (#4953)

Author: JuicyBenjamin

packages/docs/content/error-customization.mdx

@@ -178,7 +178,7 @@ z.string().min(5, {
 });
 ```
 
-Return `undefined` to avoid customizing the error message and fall back to the default message. (More specifically, Zod will yield control to the next error map in the [precedence chain](#error-precedence).) This is useful for selectively customizing certain error messages but not others. 
+Return `undefined` to avoid customizing the error message and fall back to the default message. (More specifically, Zod will yield control to the next error map in the [precedence chain](#error-precedence).) This is useful for selectively customizing certain error messages but not others.
 
 ```ts
 z.int64({
@@ -355,6 +355,7 @@ The following locales are available:
 - `bg` — Bulgarian
 - `ca` — Catalan
 - `cs` — Czech
+- `da` — Danish
 - `de` — German
 - `en` — English
 - `eo` — Esperanto

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

@@ -0,0 +1,141 @@
+import type { $ZodStringFormats } from "../core/checks.js";
+import type * as errors from "../core/errors.js";
+import * as util from "../core/util.js";
+
+const error: () => errors.$ZodErrorMap = () => {
+  const Sizable: Record<string, { unit: string; verb: string }> = {
+    string: { unit: "tegn", verb: "havde" },
+    file: { unit: "bytes", verb: "havde" },
+    array: { unit: "elementer", verb: "indeholdt" },
+    set: { unit: "elementer", verb: "indeholdt" },
+  };
+
+  const TypeNames: Record<string, string> = {
+    string: "streng",
+    number: "tal",
+    boolean: "boolean",
+    array: "liste",
+    object: "objekt",
+    set: "sæt",
+    file: "fil",
+  };
+
+  function getSizing(origin: string): { unit: string; verb: string } | null {
+    return Sizable[origin] ?? null;
+  }
+
+  function getTypeName(type: string): string {
+    return TypeNames[type] ?? type;
+  }
+
+  const parsedType = (data: any): string => {
+    const t = typeof data;
+
+    switch (t) {
+      case "number": {
+        return Number.isNaN(data) ? "NaN" : "tal";
+      }
+      case "object": {
+        if (Array.isArray(data)) {
+          return "liste";
+        }
+        if (data === null) {
+          return "null";
+        }
+
+        if (Object.getPrototypeOf(data) !== Object.prototype && data.constructor) {
+          return data.constructor.name;
+        }
+        return "objekt";
+      }
+    }
+    return t;
+  };
+
+  const Nouns: {
+    [k in $ZodStringFormats | (string & {})]?: string;
+  } = {
+    regex: "input",
+    email: "e-mailadresse",
+    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 dato- og klokkeslæt",
+    date: "ISO-dato",
+    time: "ISO-klokkeslæt",
+    duration: "ISO-varighed",
+    ipv4: "IPv4-område",
+    ipv6: "IPv6-område",
+    cidrv4: "IPv4-spektrum",
+    cidrv6: "IPv6-spektrum",
+    base64: "base64-kodet streng",
+    base64url: "base64url-kodet streng",
+    json_string: "JSON-streng",
+    e164: "E.164-nummer",
+    jwt: "JWT",
+    template_literal: "input",
+  };
+
+  return (issue) => {
+    switch (issue.code) {
+      case "invalid_type":
+        return `Ugyldigt input: forventede ${getTypeName(issue.expected)}, fik ${getTypeName(parsedType(issue.input))}`;
+      case "invalid_value":
+        if (issue.values.length === 1) return `Ugyldig værdi: forventede ${util.stringifyPrimitive(issue.values[0])}`;
+        return `Ugyldigt valg: forventede en af følgende ${util.joinValues(issue.values, "|")}`;
+      case "too_big": {
+        const adj = issue.inclusive ? "<=" : "<";
+        const sizing = getSizing(issue.origin);
+        const origin = getTypeName(issue.origin);
+        if (sizing)
+          return `For stor: forventede ${origin ?? "value"} ${sizing.verb} ${adj} ${issue.maximum.toString()} ${sizing.unit ?? "elementer"}`;
+        return `For stor: forventede ${origin ?? "value"} havde ${adj} ${issue.maximum.toString()}`;
+      }
+      case "too_small": {
+        const adj = issue.inclusive ? ">=" : ">";
+        const sizing = getSizing(issue.origin);
+        const origin = getTypeName(issue.origin);
+        if (sizing) {
+          return `For lille: forventede ${origin} ${sizing.verb} ${adj} ${issue.minimum.toString()} ${sizing.unit}`;
+        }
+
+        return `For lille: forventede ${origin} havde ${adj} ${issue.minimum.toString()}`;
+      }
+      case "invalid_format": {
+        const _issue = issue as errors.$ZodStringFormatIssues;
+        if (_issue.format === "starts_with") return `Ugyldig streng: skal starte med "${_issue.prefix}"`;
+        if (_issue.format === "ends_with") return `Ugyldig streng: skal ende med "${_issue.suffix}"`;
+        if (_issue.format === "includes") return `Ugyldig streng: skal indeholde "${_issue.includes}"`;
+        if (_issue.format === "regex") return `Ugyldig streng: skal matche mønsteret ${_issue.pattern}`;
+        return `Ugyldig ${Nouns[_issue.format] ?? issue.format}`;
+      }
+      case "not_multiple_of":
+        return `Ugyldigt tal: skal være deleligt med ${issue.divisor}`;
+      case "unrecognized_keys":
+        return `${issue.keys.length > 1 ? "Ukendte nøgler" : "Ukendt nøgle"}: ${util.joinValues(issue.keys, ", ")}`;
+      case "invalid_key":
+        return `Ugyldig nøgle i ${issue.origin}`;
+      case "invalid_union":
+        return "Ugyldigt input: matcher ingen af de tilladte typer";
+      case "invalid_element":
+        return `Ugyldig værdi i ${issue.origin}`;
+      default:
+        return `Ugyldigt input`;
+    }
+  };
+};
+
+export default function (): { localeError: errors.$ZodErrorMap } {
+  return {
+    localeError: error(),
+  };
+}

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

@@ -3,6 +3,7 @@ export { default as az } from "./az.js";
 export { default as be } from "./be.js";
 export { default as ca } from "./ca.js";
 export { default as cs } from "./cs.js";
+export { default as da } from "./da.js";
 export { default as de } from "./de.js";
 export { default as en } from "./en.js";
 export { default as eo } from "./eo.js";