Making sure path is passed to censor when there is only a top level key.

lib/proto.js

@@ -71,7 +71,7 @@ module.exports = function () {
 }
 
 const resetChildingsFormatter = bindings => bindings
-function child (bindings) {
+function child (bindings, ...args) {
   if (!bindings) {
     throw Error('missing bindings for child Pino')
   }

lib/redaction.js

@@ -76,13 +76,14 @@ function redaction (opts, serialize) {
     [redactFmtSym]: fastRedact({ paths, censor, serialize, strict })
   }
 
-  const topCensor = (...args) =>
-    typeof censor === 'function' ? serialize(censor(...args)) : serialize(censor)
+  const topCensor = (...args) => {
+    return typeof censor === 'function' ? serialize(censor(...args)) : serialize(censor)
+  }
 
   return [...Object.keys(shape), ...Object.getOwnPropertySymbols(shape)].reduce((o, k) => {
     // top level key:
     if (shape[k] === null) {
-      o[k] = topCensor
+      o[k] = (value) => topCensor(value, [k])
     } else {
       const wrappedCensor = typeof censor === 'function' ? (value, path) => {
         return censor(value, [k, ...path])

test/redact.test.js

@@ -220,6 +220,16 @@ test('redact.censor option – sets the redact value', async ({ is }) => {
 })
 
 test('redact.censor option – can be a function that accepts value and path arguments', async ({ is }) => {
+  const stream = sink()
+  const instance = pino({ redact: { paths: ['topLevel'], censor: (value, path) => value + ' ' + path.join('.') } }, stream)
+  instance.info({
+    topLevel: 'test'
+  })
+  const { topLevel } = await once(stream, 'data')
+  is(topLevel, 'test topLevel')
+})
+
+test('redact.censor option – can be a function that accepts value and path arguments (nested path)', async ({ is }) => {
   const stream = sink()
   const instance = pino({ redact: { paths: ['req.headers.cookie'], censor: (value, path) => value + ' ' + path.join('.') } }, stream)
   instance.info({