Fix wildcard redacting with a custom censor function (#617)

lib/redaction.js

@@ -72,8 +72,10 @@ function redaction (opts, serialize) {
   const result = {
     [redactFmtSym]: fastRedact({ paths, censor, serialize, strict })
   }
-  const serializedCensor = serialize(censor)
-  const topCensor = () => serializedCensor
+
+  const topCensor = (...args) =>
+    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

test/redact.test.js

@@ -481,6 +481,32 @@ test('redact – supports top level wildcard', async ({ is }) => {
   is(req, '[Redacted]')
 })
 
+test('redact – supports top level wildcard with a censor function', async ({ is }) => {
+  const stream = sink()
+  const instance = pino({
+    redact: {
+      paths: ['*'],
+      censor: () => '[Redacted]'
+    }
+  }, stream)
+  instance.info({
+    req: {
+      id: 7915,
+      method: 'GET',
+      url: '/',
+      headers: {
+        host: 'localhost:3000',
+        connection: 'keep-alive',
+        cookie: 'SESSID=298zf09hf012fh2; csrftoken=u32t4o3tb3gg43; _gat=1;'
+      },
+      remoteAddress: '::ffff:127.0.0.1',
+      remotePort: 58022
+    }
+  })
+  const { req } = await once(stream, 'data')
+  is(req, '[Redacted]')
+})
+
 test('redact – supports top level wildcard and leading wildcard', async ({ is }) => {
   const stream = sink()
   const instance = pino({ redact: ['*', '*.req'] }, stream)