mv widget js from out of subdir

templates/widget/prove.ts

@@ -0,0 +1,51 @@
+/*
+ * mCaptcha is a PoW based DoS protection software.
+ * This is the frontend web component of the mCaptcha system
+ * Copyright © 2021 Aravinth Manivnanan <realaravinth@batsense.net>.
+ *
+ * Use of this source code is governed by Apache 2.0 or MIT license.
+ * You shoud have received a copy of MIT and Apache 2.0 along with
+ * this program. If not, see <https://spdx.org/licenses/MIT.html> for
+ * MIT or <http://www.apache.org/licenses/LICENSE-2.0> for Apache.
+ */
+
+import { gen_pow } from "mcaptcha-browser";
+import { PoWConfig } from "./fetchPoWConfig";
+import * as CONST from "./const";
+
+export type Work = {
+  result: string;
+  nonce: number;
+  string: string;
+  key: string;
+};
+
+type WasmWork = {
+  result: string;
+  nonce: number;
+};
+
+/**
+ * proove work
+ * @param {PoWConfig} config - the proof-of-work configuration using which
+ * work needs to be computed
+ * */
+const prove = async (config: PoWConfig): Promise<Work> => {
+  const proofString = gen_pow(
+    config.salt,
+    config.string,
+    config.difficulty_factor
+  );
+  const proof: WasmWork = JSON.parse(proofString);
+
+  const res: Work = {
+    key: CONST.sitekey(),
+    string: config.string,
+    nonce: proof.nonce,
+    result: proof.result,
+  };
+
+  return res;
+};
+
+export default prove;