Updated experimental Eip1193Bridge to support final EIP-1193 API.

Author: ricmoo

packages/experimental/src.ts/eip1193-bridge.ts

@@ -27,9 +27,13 @@ export class Eip1193Bridge extends EventEmitter {
          ethers.utils.defineReadOnly(this, "provider", provider || null);
      }
 
+     request(request: { method: string, params?: Array<any>}): Promise<any> {
+         return this.send(request.method, request.params || []);
+     }
+
      async send(method: string, params?: Array<any>): Promise<any> {
          function throwUnsupported(message: string): never {
-             return logger.throwError("eth_sign requires a signer", ethers.utils.Logger.errors.UNSUPPORTED_OPERATION, {
+             return logger.throwError(message, ethers.utils.Logger.errors.UNSUPPORTED_OPERATION, {
                  method: method,
                  params: params
              });
@@ -125,7 +129,7 @@ export class Eip1193Bridge extends EventEmitter {
 
              case "eth_sendTransaction": {
                  if (!this.signer) {
-                     return throwUnsupported("eth_sign requires an account");
+                     return throwUnsupported("eth_sendTransaction requires an account");
                  }
 
                  const req = ethers.providers.JsonRpcProvider.hexlifyTransaction(params[0]);