v3.0.2: clarify with comments and docs

index.js

@@ -69,12 +69,10 @@ module.exports.create = function (opts) {
     var id = opts.account.id || opts.email || 'default';
     var keypair = opts.keypair;
 
-    saveKeypair(id, JSON.stringify({
+    return saveKeypair(id, JSON.stringify({
       privateKeyPem: keypair.privateKeyPem
     , privateKeyJwk: keypair.privateKeyJwk
-    }));
-
-    return null; // or Promise.resolve(null);
+    })); // Must return or Promise `null` instead of `undefined`
   };
 
 
@@ -121,14 +119,13 @@ module.exports.create = function (opts) {
     var id = opts.certificate.kid || opts.certificate.id || opts.subject;
     var keypair = opts.keypair;
 
-    saveKeypair(id, JSON.stringify({
+    return saveKeypair(id, JSON.stringify({
       privateKeyPem: keypair.privateKeyPem
     , privateKeyJwk: keypair.privateKeyJwk
-    }));
-    // Note: you can use the "keypairs" package to convert between
-    // public and private for jwk and pem, as well as convert JWK <-> PEM
+    })); // Must return or Promise `null` instead of `undefined`
 
-    return null;
+    // Side Note: you can use the "keypairs" package to convert between
+    // public and private for jwk and pem, as well as convert JWK <-> PEM
   };
 
 
@@ -155,16 +152,14 @@ module.exports.create = function (opts) {
 
     var id = opts.certificate.id || opts.subject;
     var pems = opts.pems;
-    saveCertificate(id, JSON.stringify({
+    return saveCertificate(id, JSON.stringify({
       cert: pems.cert
     , chain: pems.chain
     , subject: pems.subject
     , altnames: pems.altnames
     , issuedAt: pems.issuedAt   // a.k.a. NotBefore
     , expiresAt: pems.expiresAt // a.k.a. NotAfter
-    }));
-
-    return null;
+    })); // Must return or Promise `null` instead of `undefined`
   };
 
 

package-lock.json

@@ -1,5 +1,5 @@
 {
   "name": "greenlock-store-memory",
-  "version": "3.0.1",
+  "version": "3.0.2",
   "lockfileVersion": 1
 }

package.json

@@ -1,6 +1,6 @@
 {
   "name": "greenlock-store-memory",
-  "version": "3.0.1",
+  "version": "3.0.2",
   "description": "An in-memory reference implementation for account, certificate, and keypair storage strategies in Greenlock",
   "homepage": "https://git.coolaj86.com/coolaj86/greenlock-store-memory.js",
   "main": "index.js",