sdk/js: Move address functions to cosmos package

`canonicalAddress` and `humanAddress` are useful functions for all
cosmos chains so move it into a new cosmos package.  This also means we
need to stop hardcoding "terra" in `humanAddress` and take the human
readable part as a parameter instead.

sdk/js/src/cosmos/address.ts

@@ -0,0 +1,8 @@
+import { bech32 } from "bech32";
+
+export function canonicalAddress(humanAddress: string) {
+    return new Uint8Array(bech32.fromWords(bech32.decode(humanAddress).words));
+}
+export function humanAddress(hrp: string, canonicalAddress: Uint8Array) {
+    return bech32.encode(hrp, bech32.toWords(canonicalAddress));
+}

sdk/js/src/cosmos/index.ts

@@ -0,0 +1 @@
+export * from "./address";

sdk/js/src/index.ts

@@ -1,3 +1,4 @@
+export * from "./cosmos";
 export * from "./ethers-contracts";
 export * from "./solana";
 export * from "./terra";
@@ -6,6 +7,7 @@ export * from "./utils";
 export * from "./bridge";
 export * from "./token_bridge";
 
+export * as cosmos from "./cosmos";
 export * as ethers_contracts from "./ethers-contracts";
 export * as solana from "./solana";
 export * as terra from "./terra";

sdk/js/src/terra/address.ts

@@ -1,12 +1,4 @@
 import { zeroPad } from "@ethersproject/bytes";
-import { bech32 } from "bech32";
-
-export function canonicalAddress(humanAddress: string) {
-  return new Uint8Array(bech32.fromWords(bech32.decode(humanAddress).words));
-}
-export function humanAddress(canonicalAddress: Uint8Array) {
-  return bech32.encode("terra", bech32.toWords(canonicalAddress));
-}
 
 // from https://github.com/terra-money/station/blob/dca7de43958ce075c6e46605622203b9859b0e14/src/lib/utils/is.ts#L12
 export const isNativeTerra = (string = "") =>

sdk/js/src/token_bridge/getOriginalAsset.ts

@@ -7,7 +7,8 @@ import { decodeLocalState } from "../algorand";
 import { buildTokenId } from "../cosmwasm/address";
 import { TokenImplementation__factory } from "../ethers-contracts";
 import { importTokenWasm } from "../solana/wasm";
-import { buildNativeId, canonicalAddress, isNativeDenom } from "../terra";
+import { buildNativeId, isNativeDenom } from "../terra";
+import { canonicalAddress } from "../cosmos";
 import {
   ChainId,
   ChainName,

sdk/js/src/utils/array.test.ts

@@ -1,6 +1,6 @@
 import { zeroPad } from "ethers/lib/utils";
-import { canonicalAddress } from "../terra";
 import { tryUint8ArrayToNative } from "./array";
+import { canonicalAddress } from "../cosmos";
 
 test("terra address conversion", () => {
   const human = "terra1x46rqay4d3cssq8gxxvqz8xt6nwlz4td20k38v";

sdk/js/src/utils/array.ts

@@ -6,8 +6,9 @@ import {
   nativeStringToHexAlgorand,
   uint8ArrayToNativeStringAlgorand,
 } from "../algorand";
+import { canonicalAddress, humanAddress } from "../cosmos"
 import { buildTokenId } from "../cosmwasm/address";
-import { canonicalAddress, humanAddress, isNativeDenom } from "../terra";
+import { isNativeDenom } from "../terra";
 import {
   ChainId,
   ChainName,
@@ -82,9 +83,9 @@ export const tryUint8ArrayToNative = (
     } else {
       if (chainId === CHAIN_ID_TERRA2 && !isLikely20ByteTerra(h)) {
         // terra 2 has 32 byte addresses for contracts and 20 for wallets
-        return humanAddress(a);
+        return humanAddress("terra", a);
       }
-      return humanAddress(a.slice(-20));
+      return humanAddress("terra", a.slice(-20));
     }
   } else if (chainId === CHAIN_ID_ALGORAND) {
     return uint8ArrayToNativeStringAlgorand(a);