Use string | PubKey | null as public key type

CHANGELOG.md

@@ -20,6 +20,9 @@
 - @cosmjs/sdk38: `BaseAccount` now uses `number | string` as the type for
   `account_number` and `sequence`. The new helpers `uint64ToNumber` and
   `uint64ToString` allow you to normalize the mixed input.
+- @cosmjs/sdk38: `BaseAccount` now uses `string | PubKey | null` as the type for
+  `public_key`. The new helper `normalizePubkey` allows you to normalize the
+  mixed input.
 - @cosmjs/math: Add missing integer check to `Uint64.fromNumber`. Before
   `Uint64.fromNumber(1.1)` produced some result.
 - @cosmjs/sdk38: Add `SigningCosmosClient.signAndPost` as a mid-level

packages/cosmwasm/src/cosmwasmclient.ts

@@ -6,9 +6,9 @@ import {
   BroadcastMode,
   Coin,
   CosmosSdkTx,
-  decodeBech32Pubkey,
   IndexedTx,
   LcdClient,
+  normalizePubkey,
   PostTxResult,
   PubKey,
   setupAuthExtension,
@@ -234,7 +234,7 @@ export class CosmWasmClient {
       return {
         address: value.address,
         balance: value.coins,
-        pubkey: value.public_key ? decodeBech32Pubkey(value.public_key) : undefined,
+        pubkey: normalizePubkey(value.public_key) || undefined,
         accountNumber: uint64ToNumber(value.account_number),
         sequence: uint64ToNumber(value.sequence),
       };

packages/sdk38/src/cosmosclient.ts

@@ -3,9 +3,15 @@ import { fromBase64, fromHex, toHex } from "@cosmjs/encoding";
 import { Uint53 } from "@cosmjs/math";
 
 import { Coin } from "./coins";
-import { AuthExtension, BroadcastMode, LcdClient, setupAuthExtension, uint64ToNumber } from "./lcdapi";
+import {
+  AuthExtension,
+  BroadcastMode,
+  LcdClient,
+  normalizePubkey,
+  setupAuthExtension,
+  uint64ToNumber,
+} from "./lcdapi";
 import { Log, parseLogs } from "./logs";
-import { decodeBech32Pubkey } from "./pubkey";
 import { CosmosSdkTx, PubKey, StdTx } from "./types";
 
 export interface GetSequenceResult {
@@ -234,7 +240,7 @@ export class CosmosClient {
       return {
         address: value.address,
         balance: value.coins,
-        pubkey: value.public_key ? decodeBech32Pubkey(value.public_key) : undefined,
+        pubkey: normalizePubkey(value.public_key) || undefined,
         accountNumber: uint64ToNumber(value.account_number),
         sequence: uint64ToNumber(value.sequence),
       };

packages/sdk38/src/lcdapi/auth.ts

@@ -1,5 +1,6 @@
 /* eslint-disable @typescript-eslint/naming-convention */
 import { Coin } from "../coins";
+import { PubKey } from "../types";
 import { LcdClient } from "./lcdclient";
 
 /**
@@ -14,8 +15,17 @@ export interface BaseAccount {
   /** Bech32 account address */
   readonly address: string;
   readonly coins: readonly Coin[];
-  /** Bech32 encoded pubkey */
-  readonly public_key: string;
+  /**
+   * The public key of the account. This is not available on-chain as long as the account
+   * did not send a transaction.
+   *
+   * This was a type/value object in Cosmos SDK 0.37, changed to bech32 in Cosmos SDK 0.38 ([1])
+   * and changed back to type/value object in Cosmos SDK 0.39 ([2]).
+   *
+   * [1]: https://github.com/cosmos/cosmos-sdk/pull/5280
+   * [2]: https://github.com/cosmos/cosmos-sdk/pull/6749
+   */
+  readonly public_key: string | PubKey | null;
   /**
    * The account number assigned by the blockchain.
    *

packages/sdk38/types/lcdapi/auth.d.ts

@@ -1,4 +1,5 @@
 import { Coin } from "../coins";
+import { PubKey } from "../types";
 import { LcdClient } from "./lcdclient";
 /**
  * A Cosmos SDK base account.
@@ -12,8 +13,17 @@ export interface BaseAccount {
   /** Bech32 account address */
   readonly address: string;
   readonly coins: readonly Coin[];
-  /** Bech32 encoded pubkey */
-  readonly public_key: string;
+  /**
+   * The public key of the account. This is not available on-chain as long as the account
+   * did not send a transaction.
+   *
+   * This was a type/value object in Cosmos SDK 0.37, changed to bech32 in Cosmos SDK 0.38 ([1])
+   * and changed back to type/value object in Cosmos SDK 0.39 ([2]).
+   *
+   * [1]: https://github.com/cosmos/cosmos-sdk/pull/5280
+   * [2]: https://github.com/cosmos/cosmos-sdk/pull/6749
+   */
+  readonly public_key: string | PubKey | null;
   /**
    * The account number assigned by the blockchain.
    *