From 61aa989fb3714d63545531176230984b7c0cf32d Mon Sep 17 00:00:00 2001
From: Simon Warta <simon@warta.it>
Date: Mon, 22 Mar 2021 12:13:44 +0100
Subject: [PATCH] Add MultisigThresholdPubkey/isMultisigThresholdPubkey

---
 packages/amino/src/index.ts        | 10 +++++++++-
 packages/amino/src/pubkeys.spec.ts | 10 +++++++++-
 packages/amino/src/pubkeys.ts      | 13 +++++++++++++
 3 files changed, 31 insertions(+), 2 deletions(-)

diff --git a/packages/amino/src/index.ts b/packages/amino/src/index.ts
index 5469771a..11c4b303 100644
--- a/packages/amino/src/index.ts
+++ b/packages/amino/src/index.ts
@@ -5,4 +5,12 @@ export {
   encodeBech32Pubkey,
   encodeSecp256k1Pubkey,
 } from "./encoding";
-export { Pubkey, Secp256k1Pubkey, SinglePubkey, isSinglePubkey, pubkeyType } from "./pubkeys";
+export {
+  MultisigThresholdPubkey,
+  Pubkey,
+  Secp256k1Pubkey,
+  SinglePubkey,
+  isMultisigThresholdPubkey,
+  isSinglePubkey,
+  pubkeyType,
+} from "./pubkeys";
diff --git a/packages/amino/src/pubkeys.spec.ts b/packages/amino/src/pubkeys.spec.ts
index 858c0815..ec47bdcb 100644
--- a/packages/amino/src/pubkeys.spec.ts
+++ b/packages/amino/src/pubkeys.spec.ts
@@ -1,4 +1,4 @@
-import { isSinglePubkey } from "./pubkeys";
+import { isMultisigThresholdPubkey, isSinglePubkey } from "./pubkeys";
 
 describe("pubkeys", () => {
   const pubkeyEd25519 = {
@@ -41,4 +41,12 @@ describe("pubkeys", () => {
       expect(isSinglePubkey(pubkeyMultisigThreshold)).toEqual(false);
     });
   });
+
+  describe("isMultisigThresholdPubkey", () => {
+    it("works", () => {
+      expect(isMultisigThresholdPubkey(pubkeyEd25519)).toEqual(false);
+      expect(isMultisigThresholdPubkey(pubkeySecp256k1)).toEqual(false);
+      expect(isMultisigThresholdPubkey(pubkeyMultisigThreshold)).toEqual(true);
+    });
+  });
 });
diff --git a/packages/amino/src/pubkeys.ts b/packages/amino/src/pubkeys.ts
index e538e657..90da0a79 100644
--- a/packages/amino/src/pubkeys.ts
+++ b/packages/amino/src/pubkeys.ts
@@ -42,3 +42,16 @@ export function isSinglePubkey(pubkey: Pubkey): pubkey is SinglePubkey {
   const singPubkeyTypes: string[] = [pubkeyType.ed25519, pubkeyType.secp256k1, pubkeyType.sr25519];
   return singPubkeyTypes.includes(pubkey.type);
 }
+
+export interface MultisigThresholdPubkey extends Pubkey {
+  readonly type: "tendermint/PubKeyMultisigThreshold";
+  readonly value: {
+    /** A string-encoded integer */
+    readonly threshold: string;
+    readonly pubkeys: readonly SinglePubkey[];
+  };
+}
+
+export function isMultisigThresholdPubkey(pubkey: Pubkey): pubkey is MultisigThresholdPubkey {
+  return (pubkey as MultisigThresholdPubkey).type === "tendermint/PubKeyMultisigThreshold";
+}