update

node_modules/pino-std-serializers/lib/err.js

@@ -0,0 +1,64 @@
+'use strict'
+
+module.exports = errSerializer
+
+const seen = Symbol('circular-ref-tag')
+const rawSymbol = Symbol('pino-raw-err-ref')
+const pinoErrProto = Object.create({}, {
+  type: {
+    enumerable: true,
+    writable: true,
+    value: undefined
+  },
+  message: {
+    enumerable: true,
+    writable: true,
+    value: undefined
+  },
+  stack: {
+    enumerable: true,
+    writable: true,
+    value: undefined
+  },
+  raw: {
+    enumerable: false,
+    get: function () {
+      return this[rawSymbol]
+    },
+    set: function (val) {
+      this[rawSymbol] = val
+    }
+  }
+})
+Object.defineProperty(pinoErrProto, rawSymbol, {
+  writable: true,
+  value: {}
+})
+
+function errSerializer (err) {
+  if (!(err instanceof Error)) {
+    return err
+  }
+
+  err[seen] = undefined // tag to prevent re-looking at this
+  const _err = Object.create(pinoErrProto)
+  _err.type = err.constructor.name
+  _err.message = err.message
+  _err.stack = err.stack
+  for (const key in err) {
+    if (_err[key] === undefined) {
+      const val = err[key]
+      if (val instanceof Error) {
+        if (!val.hasOwnProperty(seen)) {
+          _err[key] = errSerializer(val)
+        }
+      } else {
+        _err[key] = val
+      }
+    }
+  }
+
+  delete err[seen] // clean up tag in case err is serialized again later
+  _err.raw = err
+  return _err
+}