Bumped TypeScript to 4.2.2 (#1288).

Author: ricmoo

package.json

@@ -80,7 +80,7 @@
     "rollup-plugin-sourcemaps": "0.6.3",
     "scrypt-js": "3.0.1",
     "semver": "^5.6.0",
-    "typescript": "3.8.3",
+    "typescript": "4.2.2",
     "uglify-es": "3.3.9"
   },
   "dependencies": {

packages/experimental/src.ts/nonce-manager.ts

@@ -20,10 +20,7 @@ export class NonceManager extends ethers.Signer {
         super();
         this._deltaCount = 0;
         ethers.utils.defineReadOnly(this, "signer", signer);
-    }
-
-    get provider(): ethers.providers.Provider {
-        return this.signer.provider;
+        ethers.utils.defineReadOnly(this, "provider", signer.provider || null);
     }
 
     connect(provider: ethers.providers.Provider): NonceManager {

packages/tests/src.ts/test-contract.ts

@@ -91,7 +91,7 @@ async function TestContractEvents() {
             waitForEvent('TestV2', [ { indexed: true }, [ p0, p1 ] ]),
             waitForEvent('TestV2Nested', [ { indexed: true }, [ p0_1, p1_1, [ p0, p1 ] ] ]),
         ]).then(function(result) {
-            resolve();
+            resolve(result);
         });
     });
 }

packages/tests/src.ts/test-providers.ts

@@ -1126,6 +1126,7 @@ describe("Bad ENS resolution", function() {
         try {
             const tx = await wallet.sendTransaction({ to: "junk", value: 1 });
             console.log("TX", tx);
+            assert.ok(false, "failed to throw an exception");
         } catch (error) {
             assert.ok(error.argument === "tx.to" && error.value === "junk");
         }