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diff --git a/packages/aml-backoffice-ui/src/forms/declaration.ts b/packages/aml-backoffice-ui/src/forms/declaration.ts
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+++ b/packages/aml-backoffice-ui/src/forms/declaration.ts
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+/*
+ This file is part of GNU Taler
+ (C) 2022 Taler Systems S.A.
+
+ GNU Taler is free software; you can redistribute it and/or modify it under the
+ terms of the GNU General Public License as published by the Free Software
+ Foundation; either version 3, or (at your option) any later version.
+
+ GNU Taler is distributed in the hope that it will be useful, but WITHOUT ANY
+ WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR
+ A PARTICULAR PURPOSE.  See the GNU General Public License for more details.
+
+ You should have received a copy of the GNU General Public License along with
+ GNU Taler; see the file COPYING.  If not, see <http://www.gnu.org/licenses/>
+ */
+
+import type { AmountJson, TranslatedString } from "@gnu-taler/taler-util";
+import type { FlexibleForm, InternationalizationAPI } from "@gnu-taler/web-util/browser";
+import { AmlExchangeBackend } from "../utils/types.js";
+
+/**
+ * import entry point without hard reference.
+ * 
+ * This file just export types and UI Forms 
+ * based on what `globalThis` contiain.
+ * 
+ * `./index.js` must be imorted first before 
+ * so `globaThis` will have the correct value. 
+ */
+
+export interface BaseForm {
+  state: AmlExchangeBackend.AmlState;
+  threshold: AmountJson;
+}
+
+export type FormMetadata<T extends BaseForm> = {
+  label: TranslatedString,
+  id: string,
+  version: number,
+  impl: (current: T) => FlexibleForm<T>
+}
+
+interface LabelValue {
+  label: TranslatedString;
+  value: string,
+}
+
+export interface UiForms {
+  currencies: (i18n: InternationalizationAPI) => LabelValue[],
+  languages: (i18n: InternationalizationAPI) => LabelValue[],
+  forms: (i18n: InternationalizationAPI) => Array<FormMetadata<BaseForm>>,
+}
+
+/**
+ * Global settings for the UI.
+ */
+const defaultUIForms: UiForms = {
+  currencies: () => [],
+  languages: () => [],
+  forms: () => [],
+};
+
+declare global {
+  var amlExchangeBackoffice: UiForms;
+}
+
+export const uiForms: UiForms =
+  "amlExchangeBackoffice" in globalThis
+    ? (globalThis as any).amlExchangeBackoffice
+    : defaultUIForms;