From 884790a97865b132cba0c821f61bdc68e2dc7585 Mon Sep 17 00:00:00 2001
From: Alexander Bjerkan <alexander.bjerkan@obos.no>
Date: Mon, 27 Jan 2025 14:26:18 +0100
Subject: [PATCH 1/2] formatpostalcode

---
 packages/format/src/no.ts | 11 +++++++++++
 packages/format/src/se.ts | 11 +++++++++++
 2 files changed, 22 insertions(+)

diff --git a/packages/format/src/no.ts b/packages/format/src/no.ts
index b53be2d..1e1ee99 100644
--- a/packages/format/src/no.ts
+++ b/packages/format/src/no.ts
@@ -56,3 +56,14 @@ const OBOS_MEMBERSHIP_NUMBER_FORMAT = /^(\d{3})(\d{2})(\d{2})$/;
 export function formatObosMembershipNumber(input: string): string {
   return replaceIfMatch(input, OBOS_MEMBERSHIP_NUMBER_FORMAT, '$1 $2 $3');
 }
+
+/**
+ * Format a postal code
+ * @example
+ * ```
+ * format('0000') // => '0000'
+ * ```
+ */
+export function formatPostalCode(input: string): string {
+  return input;
+}
diff --git a/packages/format/src/se.ts b/packages/format/src/se.ts
index be33c8c..e24f765 100644
--- a/packages/format/src/se.ts
+++ b/packages/format/src/se.ts
@@ -68,5 +68,16 @@ export function formatOrganizationNumber(input: string): string {
   return replaceIfMatch(input, ORG_NUMBER_FORMAT, '$1-$2');
 }
 
+/**
+ * Format a postal code
+ * @example
+ * ```
+ * format('00000') // => '000 00'
+ * ```
+ */
+export function formatPostalCode(input: string): string {
+  return input;
+}
+
 // just reexport the no method for API feature parity
 export { formatObosMembershipNumber } from './no';

From b4d222882049c8140bb668443701dfdcddfc3982 Mon Sep 17 00:00:00 2001
From: Alexander Bjerkan <alexander.bjerkan@obos.no>
Date: Tue, 28 Jan 2025 12:22:21 +0100
Subject: [PATCH 2/2] format: add formatPostalCode method

---
 .changeset/wicked-tools-provide.md | 15 +++++++++++++++
 packages/format/README.md          |  1 +
 packages/format/src/format.test.ts | 16 ++++++++++++++++
 packages/format/src/no.ts          |  5 ++++-
 packages/format/src/se.ts          |  4 +++-
 5 files changed, 39 insertions(+), 2 deletions(-)
 create mode 100644 .changeset/wicked-tools-provide.md

diff --git a/.changeset/wicked-tools-provide.md b/.changeset/wicked-tools-provide.md
new file mode 100644
index 0000000..1da9346
--- /dev/null
+++ b/.changeset/wicked-tools-provide.md
@@ -0,0 +1,15 @@
+---
+"@obosbbl/format": minor
+---
+
+add `formatPostalCode` method.
+
+```js
+import { formatPostalCode} from '@obosbbl/format/no';
+
+formatPostalCode('0000') // => '0000'
+
+import { formatPostalCode } from '@obosbbl/format/se';
+
+formatPhoneNumber('00000') // => '000 00'
+```
diff --git a/packages/format/README.md b/packages/format/README.md
index aefd172..e2df9ee 100644
--- a/packages/format/README.md
+++ b/packages/format/README.md
@@ -39,3 +39,4 @@ formatOrganizationNumber('0000000000') // => '000000-0000'
 * formatPhoneNumber
 * formatOrganizationNumber
 * formatObosMembershipNumber
+* formatPostalCode
diff --git a/packages/format/src/format.test.ts b/packages/format/src/format.test.ts
index c5650d8..aa15f0c 100644
--- a/packages/format/src/format.test.ts
+++ b/packages/format/src/format.test.ts
@@ -3,11 +3,13 @@ import {
   formatObosMembershipNumber as formatObosMembershipNumberNo,
   formatOrganizationNumber as formatOrganizationNumberNo,
   formatPhoneNumber as formatPhoneNumberNo,
+  formatPostalCode as formatPostalCodeNo,
 } from './no';
 import {
   formatObosMembershipNumber as formatObosMembershipNumberSe,
   formatOrganizationNumber as formatOrganizationNumberSe,
   formatPhoneNumber as formatPhoneNumberSe,
+  formatPostalCode as formatPostalCodeSe,
 } from './se';
 
 describe('no', () => {
@@ -26,6 +28,13 @@ describe('no', () => {
   ])('formatOrganizationNumber(%s) -> %s', (input, expected) => {
     expect(formatOrganizationNumberNo(input)).toBe(expected);
   });
+
+  test.each([['0000', '0000']])(
+    'formatPostalCode(%s) -> %s',
+    (input, expected) => {
+      expect(formatPostalCodeNo(input)).toBe(expected);
+    },
+  );
 });
 
 describe('se', () => {
@@ -64,6 +73,13 @@ describe('se', () => {
   ])('formatOrganizationNumber(%s) -> %s', (input, expected) => {
     expect(formatOrganizationNumberSe(input)).toBe(expected);
   });
+
+  test.each([
+    ['00000', '000 00'],
+    ['000 00', '000 00'],
+  ])('formatPostalCode(%s) -> %s', (input, expected) => {
+    expect(formatPostalCodeSe(input)).toBe(expected);
+  });
 });
 
 test.each([
diff --git a/packages/format/src/no.ts b/packages/format/src/no.ts
index 1e1ee99..c4ba271 100644
--- a/packages/format/src/no.ts
+++ b/packages/format/src/no.ts
@@ -57,13 +57,16 @@ export function formatObosMembershipNumber(input: string): string {
   return replaceIfMatch(input, OBOS_MEMBERSHIP_NUMBER_FORMAT, '$1 $2 $3');
 }
 
+const POSTAL_CODE_FORMAT = /^(\d{4})$/;
+
 /**
  * Format a postal code
+ *
  * @example
  * ```
  * format('0000') // => '0000'
  * ```
  */
 export function formatPostalCode(input: string): string {
-  return input;
+  return replaceIfMatch(input, POSTAL_CODE_FORMAT, '$1');
 }
diff --git a/packages/format/src/se.ts b/packages/format/src/se.ts
index e24f765..d10713e 100644
--- a/packages/format/src/se.ts
+++ b/packages/format/src/se.ts
@@ -68,6 +68,8 @@ export function formatOrganizationNumber(input: string): string {
   return replaceIfMatch(input, ORG_NUMBER_FORMAT, '$1-$2');
 }
 
+const POSTAL_CODE_FORMAT = /^(\d{3})(\d{2})$/;
+
 /**
  * Format a postal code
  * @example
@@ -76,7 +78,7 @@ export function formatOrganizationNumber(input: string): string {
  * ```
  */
 export function formatPostalCode(input: string): string {
-  return input;
+  return replaceIfMatch(input, POSTAL_CODE_FORMAT, '$1 $2');
 }
 
 // just reexport the no method for API feature parity