Add opts.filter()

Author: ehmicky

src/default.js

@@ -5,6 +5,7 @@ const { defaultGetMessage } = require('./message')
 const { defaultLog } = require('./log')
 
 const DEFAULT_OPTS = {
+  filter: () => true,
   getLevel: defaultGetLevel,
   getMessage: defaultGetMessage,
   log: defaultLog,

src/handle.js

@@ -25,6 +25,10 @@ const handleEvent = async function({
     secondPromiseValue,
   })
 
+  if (!opts.filter(info)) {
+    return
+  }
+
   const level = getLevel({ opts, info })
   const message = getMessage({ opts, info, level })