Add full support for MultiCoin plugins and automatic detection for EV…

…M-compatible coin types (#3888, #4081).

src.ts/providers/ens-resolver.ts

@@ -5,11 +5,12 @@
  * @_section: api/providers/ens-resolver:ENS Resolver [about-ens-rsolver]
  */
 
+import { getAddress } from "../address/index.js";
 import { ZeroAddress } from "../constants/index.js";
 import { Contract } from "../contract/index.js";
 import { dnsEncode, namehash } from "../hash/index.js";
 import {
- hexlify, toBeHex,
+ hexlify, isHexString, toBeHex,
  defineProperties, encodeBase58,
  assert, assertArgument, isError,
  FetchRequest
@@ -184,7 +185,7 @@ export class EnsResolver {
  "function supportsInterface(bytes4) view returns (bool)",
  "function resolve(bytes, bytes) view returns (bytes)",
  "function addr(bytes32) view returns (address)",
- "function addr(bytes32, uint) view returns (address)",
+ "function addr(bytes32, uint) view returns (bytes)",
  "function text(bytes32, string) view returns (string)",
  "function contenthash(bytes32) view returns (bytes)",
  ], provider);
@@ -276,6 +277,14 @@ export class EnsResolver {
  }
  }
 
+ // Try decoding its EVM canonical chain as an EVM chain address first
+ if (coinType >= 0 && coinType < 0x80000000) {
+ let ethCoinType = coinType + 0x80000000;
+
+ const data = await this.#fetch("addr(bytes32,uint)", [ ethCoinType ]);
+ if (isHexString(data, 20)) { return getAddress(data); }
+ }
+
  let coinPlugin: null | MulticoinProviderPlugin = null;
  for (const plugin of this.provider.plugins) {
  if (!(plugin instanceof MulticoinProviderPlugin)) { continue; }
@@ -294,7 +303,7 @@ export class EnsResolver {
  if (data == null || data === "0x") { return null; }
 
  // Compute the address
- const address = await coinPlugin.encodeAddress(coinType, data);
+ const address = await coinPlugin.decodeAddress(coinType, data);
 
  if (address != null) { return address; }