fix: linter errors

Author: wallet77

index.js

@@ -50,7 +50,7 @@ class APM {
         // prometheus stuff
         // --------------------------------------------------------------
         this.config.NORMALIZE_ENDPOINT = this.config.NORMALIZE_ENDPOINT === undefined ? true : this.config.NORMALIZE_ENDPOINT
-        if ([1, true, 'true', 'on', 'yes', undefined].indexOf(this.config.COLLECT_DEFAULT_METRICS) >= 0 ) {
+        if ([1, true, 'true', 'on', 'yes', undefined].indexOf(this.config.COLLECT_DEFAULT_METRICS) >= 0) {
             const collectDefaultMetrics = this.client.collectDefaultMetrics
             collectDefaultMetrics(this.config.PROM_CLIENT_CONF)
         }

tests/main.test.js

@@ -11,15 +11,15 @@ describe('prom-client integration', () => {
         apm = new APM()
         apm.init()
         const data = await apm.client.register.metrics()
-        expect(data.includes("process_cpu_user_seconds_total")).toEqual(true)
-    });
+        expect(data.includes('process_cpu_user_seconds_total')).toEqual(true)
+    })
 
     it('should support turning off default collection', async () => {
         apm = new APM({ COLLECT_DEFAULT_METRICS: false })
         apm.init()
         const data = await apm.client.register.metrics()
-        expect(data.includes("process_cpu_user_seconds_total")).toEqual(false)
-    });
+        expect(data.includes('process_cpu_user_seconds_total')).toEqual(false)
+    })
 
     it('should use custom config for prom', async () => {
         apm = new APM({