Strip params if null is passed (#292)

* Strip params if null

* Bump coverage

Author: FrederikBolding

jest.config.js

@@ -45,7 +45,7 @@ const baseConfig = {
   // An object that configures minimum threshold enforcement for coverage results
   coverageThreshold: {
     global: {
-      branches: 65.11,
+      branches: 65.43,
       functions: 65.65,
       lines: 66.74,
       statements: 66.81,

src/BaseProvider.ts

@@ -209,7 +209,7 @@ export abstract class BaseProvider extends SafeEventEmitter {
     }
 
     const payload =
-      params === undefined
+      params === undefined || params === null
         ? {
             method,
           }