fix: leases revoked or released before grant completes leaking

changelog.md

@@ -1,5 +1,9 @@
 # Changelog
 
+## TBA
+
+- **fix:** leases revoked or released before grant completes leaking
+
 ## 1.1.0 2020-11-28
 
 - **feat:** implement elections

src/lease.ts

@@ -133,6 +133,10 @@ export class Lease extends EventEmitter {
     this.leaseID = this.client
       .leaseGrant({ TTL: ttl }, options)
       .then(res => {
+        if (this.innerState === LeaseState.Revoked) {
+          return res.ID;
+        }
+
         this.innerState = LeaseState.Alive;
         this.lastKeepAlive = Date.now();
         if (autoKeepAlive !== false) {

src/test/election.test.ts

@@ -189,7 +189,7 @@ describe('election', () => {
       ]);
 
       expect(newLeader).to.equal('candidate');
-      campaign2.resign();
+      await campaign2.resign();
       await observer.cancel();
     });
   });