diff --git a/@navikt/core/react/.gitignore b/@navikt/core/react/.gitignore
new file mode 100644
index 0000000000..86ad5d77f4
--- /dev/null
+++ b/@navikt/core/react/.gitignore
@@ -0,0 +1 @@
+scripts/*.backup
\ No newline at end of file
diff --git a/@navikt/core/react/package.json b/@navikt/core/react/package.json
index 9e1d443b22..bc7504ec29 100644
--- a/@navikt/core/react/package.json
+++ b/@navikt/core/react/package.json
@@ -603,10 +603,11 @@
     "./package.json": "./package.json"
   },
   "scripts": {
-    "docgen": "yarn tsx ../../../scripts/docgen.ts",
+    "docgen": "tsx ../../../scripts/docgen.ts",
+    "i18n-jsdoc": "tsx ./scripts/addJsdocToLocales.ts",
     "write-packagejson": "echo '{\"type\": \"module\"}' > esm/package.json",
     "clean": "rimraf cjs esm",
-    "build": "concurrently \"tsc -p tsconfig.build.json\" \"tsc -p tsconfig.esm.json && tsc-alias -p tsconfig.esm.json && yarn write-packagejson\" ",
+    "build": "yarn i18n-jsdoc && concurrently \"tsc -p tsconfig.build.json\" \"tsc -p tsconfig.esm.json && tsc-alias -p tsconfig.esm.json && yarn write-packagejson\" && yarn i18n-jsdoc --cleanup",
     "watch": "tsc --watch -p tsconfig.esm.json",
     "test": "TZ=UTC vitest run -c tests/vitest.config.ts",
     "test:watch": "vitest watch"
@@ -625,8 +626,10 @@
     "@testing-library/jest-dom": "^5.16.0",
     "@testing-library/react": "^15.0.7",
     "@testing-library/user-event": "^14.2.0",
+    "@types/jscodeshift": "^0.11.11",
     "concurrently": "9.0.1",
     "fast-glob": "3.2.11",
+    "jscodeshift": "^0.15.1",
     "jsdom": "24.0.0",
     "react-dom": "^18.0.0",
     "react-router-dom": "^6.3.0",
diff --git a/@navikt/core/react/scripts/addJsdocToLocales.ts b/@navikt/core/react/scripts/addJsdocToLocales.ts
new file mode 100644
index 0000000000..f96699cc04
--- /dev/null
+++ b/@navikt/core/react/scripts/addJsdocToLocales.ts
@@ -0,0 +1,59 @@
+import fs from "fs";
+import jscodeshift from "jscodeshift";
+
+const j = jscodeshift.withParser("ts");
+const file = "src/util/i18n/locales/nb.ts";
+const backup = "scripts/nb.backup";
+
+function addJsdoc() {
+  if (fs.existsSync(backup)) {
+    // If last build failed, we need to restore the file so that we don't create duplicate JSDoc
+    console.info(
+      `WARNING: Restoring backup of ${file} - Uncommitted changes will be lost!`,
+    );
+    fs.copyFileSync(backup, file);
+  }
+
+  fs.copyFileSync(file, backup); // Create a copy of the original file that we can restore afterwards
+
+  const code = fs.readFileSync(file, "utf-8");
+  const parsedCode = j(code);
+  const defaultExport = parsedCode.find(j.ExportDefaultDeclaration);
+  const keys = defaultExport.find(j.ObjectProperty);
+  keys
+    .filter((key) => key.value.value.type === "StringLiteral")
+    .forEach((key) => {
+      // @ts-expect-error It works, doesn't it?
+      const value = key.value.value.value;
+      const foundCommentBlock = key.value.comments?.find(
+        (comment) => comment.type === "CommentBlock",
+      );
+      if (foundCommentBlock) {
+        foundCommentBlock.value = `${foundCommentBlock.value}\n* @default "${value}" `;
+      } else {
+        key.value.comments = [
+          ...(key.value.comments || []),
+          {
+            type: "CommentBlock",
+            value: `* @default "${value}" `,
+            leading: true,
+            trailing: false,
+          },
+        ];
+      }
+    });
+
+  const modifiedCode = parsedCode.toSource();
+  fs.writeFileSync(file, modifiedCode);
+}
+
+function cleanup() {
+  fs.copyFileSync(backup, file);
+  fs.unlinkSync(backup);
+}
+
+if (process.argv.includes("--cleanup")) {
+  cleanup();
+} else {
+  addJsdoc();
+}
diff --git a/yarn.lock b/yarn.lock
index 0ed03eb3e4..10e0a79714 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -3815,10 +3815,12 @@ __metadata:
     "@testing-library/jest-dom": "npm:^5.16.0"
     "@testing-library/react": "npm:^15.0.7"
     "@testing-library/user-event": "npm:^14.2.0"
+    "@types/jscodeshift": "npm:^0.11.11"
     clsx: "npm:^2.1.0"
     concurrently: "npm:9.0.1"
     date-fns: "npm:^3.0.0"
     fast-glob: "npm:3.2.11"
+    jscodeshift: "npm:^0.15.1"
     jsdom: "npm:24.0.0"
     react-day-picker: "npm:8.10.1"
     react-dom: "npm:^18.0.0"