refactor(browser): unify fill field normalization

src/browser/form-fields.ts

@@ -0,0 +1,32 @@
+import type { BrowserFormField } from "./client-actions-core.js";
+
+export const DEFAULT_FILL_FIELD_TYPE = "text";
+
+type BrowserFormFieldValue = NonNullable<BrowserFormField["value"]>;
+
+export function normalizeBrowserFormFieldRef(value: unknown): string {
+  return typeof value === "string" ? value.trim() : "";
+}
+
+export function normalizeBrowserFormFieldType(value: unknown): string {
+  const type = typeof value === "string" ? value.trim() : "";
+  return type || DEFAULT_FILL_FIELD_TYPE;
+}
+
+export function normalizeBrowserFormFieldValue(value: unknown): BrowserFormFieldValue | undefined {
+  return typeof value === "string" || typeof value === "number" || typeof value === "boolean"
+    ? value
+    : undefined;
+}
+
+export function normalizeBrowserFormField(
+  record: Record<string, unknown>,
+): BrowserFormField | null {
+  const ref = normalizeBrowserFormFieldRef(record.ref);
+  if (!ref) {
+    return null;
+  }
+  const type = normalizeBrowserFormFieldType(record.type);
+  const value = normalizeBrowserFormFieldValue(record.value);
+  return value === undefined ? { ref, type } : { ref, type, value };
+}