Use readable-stream instead of Duplexify

Signed-off-by: Matteo Collina <hello@matteocollina.com>

index.js

@@ -2,7 +2,7 @@
 
 const metadata = Symbol.for('pino.metadata')
 const split = require('split2')
-const duplexify = require('duplexify')
+const { Duplex } = require('readable-stream')
 
 module.exports = function build (fn, opts = {}) {
   const parseLines = opts.parse === 'lines'
@@ -67,9 +67,7 @@ module.exports = function build (fn, opts = {}) {
     // set it to null to not retain a reference to the promise
     res = null
   } else if (opts.enablePipelining && res) {
-    return duplexify(stream, res, {
-      objectMode: true
-    })
+    return Duplex.from({ writable: stream, readable: res, objectMode: true })
   }
 
   return stream

package.json

@@ -23,7 +23,7 @@
   },
   "homepage": "https://github.com/pinojs/pino-abstract-transport#readme",
   "dependencies": {
-    "duplexify": "^4.1.2",
+    "readable-stream": "^4.0.0",
     "split2": "^4.0.0"
   },
   "devDependencies": {