1 files changed, 8 insertions, 6 deletions
diff --git a/lib/internal/timers.js b/lib/internal/timers.js
index 8c1a87a65f..26fc3f941b 100644
--- a/lib/internal/timers.js
+++ b/lib/internal/timers.js
@@ -10,7 +10,11 @@ const {
 const async_id_symbol = Symbol('asyncId');
 const trigger_async_id_symbol = Symbol('triggerId');
 
-const errors = require('internal/errors');
+const {
+  ERR_INVALID_ARG_TYPE,
+  ERR_INVALID_CALLBACK,
+  ERR_OUT_OF_RANGE
+} = require('internal/errors').codes;
 
 // Timeout values > TIMEOUT_MAX are set to 1.
 const TIMEOUT_MAX = 2 ** 31 - 1;
@@ -94,7 +98,7 @@ Timeout.prototype[refreshFnSymbol] = function refresh() {
 function setUnrefTimeout(callback, after, arg1, arg2, arg3) {
   // Type checking identical to setTimeout()
   if (typeof callback !== 'function') {
-    throw new errors.TypeError('ERR_INVALID_CALLBACK');
+    throw new ERR_INVALID_CALLBACK();
   }
 
   let i, args;
@@ -127,13 +131,11 @@ function setUnrefTimeout(callback, after, arg1, arg2, arg3) {
 // Type checking used by timers.enroll() and Socket#setTimeout()
 function validateTimerDuration(msecs) {
   if (typeof msecs !== 'number') {
-    throw new errors.TypeError('ERR_INVALID_ARG_TYPE', 'msecs',
-                               'number', msecs);
+    throw new ERR_INVALID_ARG_TYPE('msecs', 'number', msecs);
   }
 
   if (msecs < 0 || !isFinite(msecs)) {
-    throw new errors.RangeError('ERR_OUT_OF_RANGE', 'msecs',
-                                'a non-negative finite number', msecs);
+    throw new ERR_OUT_OF_RANGE('msecs', 'a non-negative finite number', msecs);
   }
 
   // Ensure that msecs fits into signed int32