diff --git a/lib/internal/validators.js b/lib/internal/validators.js
index 7fd31c9dc6b4ea..cfad8c014eb801 100644
--- a/lib/internal/validators.js
+++ b/lib/internal/validators.js
@@ -35,7 +35,6 @@ const {
 const { signals } = internalBinding('constants').os;
 
 /**
- * @callback isInt32
  * @param {number} value
  * @returns {boolean}
  */
@@ -44,7 +43,6 @@ function isInt32(value) {
 }
 
 /**
- * @callback isUint32
  * @param {number} value
  * @returns {boolean}
  */
@@ -179,7 +177,7 @@ function validateNumber(value, name, min = undefined, max) {
     throw new ERR_INVALID_ARG_TYPE(name, 'number', value);
 
   if ((min != null && value < min) || (max != null && value > max) ||
-    ((min != null || max != null) && NumberIsNaN(value))) {
+      ((min != null || max != null) && NumberIsNaN(value))) {
     throw new ERR_OUT_OF_RANGE(
       name,
       `${min != null ? `>= ${min}` : ''}${min != null && max != null ? ' && ' : ''}${max != null ? `<= ${max}` : ''}`,
@@ -230,7 +228,11 @@ function getOwnPropertyValueOrDefault(options, key, defaultValue) {
  * @callback validateObject
  * @param {*} value
  * @param {string} name
- * @param {{allowArray: boolean=, allowFunction: boolean=, nullable: boolean=}} [options]
+ * @param {{
+ *   allowArray: boolean=,
+ *   allowFunction: boolean=,
+ *   nullable: boolean=
+ * }} [options]
  */
 
 /** @type {validateObject} */
@@ -240,10 +242,10 @@ const validateObject = hideStackFrames(
     const allowFunction = getOwnPropertyValueOrDefault(options, 'allowFunction', false);
     const nullable = getOwnPropertyValueOrDefault(options, 'nullable', false);
     if ((!nullable && value === null) ||
-      (!allowArray && ArrayIsArray(value)) ||
-      (typeof value !== 'object' && (
-        !allowFunction || typeof value !== 'function'
-      ))) {
+        (!allowArray && ArrayIsArray(value)) ||
+        (typeof value !== 'object' && (
+          !allowFunction || typeof value !== 'function'
+        ))) {
       throw new ERR_INVALID_ARG_TYPE(name, 'Object', value);
     }
   });
@@ -253,7 +255,7 @@ const validateObject = hideStackFrames(
  * @param {*} value
  * @param {string} name
  * @param {number} [minLength]
- * @returns {asserts value is unknown[]}
+ * @returns {asserts value is any[]}
  */
 
 /** @type {validateArray} */
@@ -270,24 +272,23 @@ const validateArray = hideStackFrames((value, name, minLength = 0) => {
 });
 
 /**
- * @callback validateSignalName
  * @param {*} signal
  * @param {string} name
  * @returns {asserts signal is keyof signals}
  */
-
-/** @type {validateSignalName} */
 function validateSignalName(signal, name = 'signal') {
   validateString(signal, name);
 
   if (signals[signal] === undefined) {
     if (signals[StringPrototypeToUpperCase(signal)] !== undefined) {
       throw new ERR_UNKNOWN_SIGNAL(signal +
-        ' (signals must use all capital letters)');
+                                   ' (signals must use all capital letters)');
     }
 
     throw new ERR_UNKNOWN_SIGNAL(signal);
   }
+
+  return true;
 }
 
 /**
@@ -299,29 +300,28 @@ function validateSignalName(signal, name = 'signal') {
 /** @type {validateBuffer} */
 const validateBuffer = hideStackFrames((buffer, name = 'buffer') => {
   if (!isArrayBufferView(buffer)) {
-    throw new ERR_INVALID_ARG_TYPE(name, ['Buffer', 'TypedArray', 'DataView'], buffer);
+    throw new ERR_INVALID_ARG_TYPE(name,
+                                   ['Buffer', 'TypedArray', 'DataView'],
+                                   buffer);
   }
 });
 
 /**
- * @callback validateEncoding
  * @param {string} data
  * @param {string} encoding
  */
-
-/** @type {validateEncoding} */
 function validateEncoding(data, encoding) {
   const normalizedEncoding = normalizeEncoding(encoding);
   const length = data.length;
 
   if (normalizedEncoding === 'hex' && length % 2 !== 0) {
-    throw new ERR_INVALID_ARG_VALUE('encoding', encoding, `is invalid for data of length ${length}`);
+    throw new ERR_INVALID_ARG_VALUE('encoding', encoding,
+                                    `is invalid for data of length ${length}`);
   }
 }
 
 /**
- * @callback validatePort
- * @description Check that the port number is not NaN when coerced to a number,
+ * Check that the port number is not NaN when coerced to a number,
  * is an integer and that it falls within the legal range of port numbers.
  * @param {*} port
  * @param {string} [name='Port']
@@ -330,10 +330,10 @@ function validateEncoding(data, encoding) {
  */
 function validatePort(port, name = 'Port', allowZero = true) {
   if ((typeof port !== 'number' && typeof port !== 'string') ||
-    (typeof port === 'string' && StringPrototypeTrim(port).length === 0) ||
-    +port !== (+port >>> 0) ||
-    port > 0xFFFF ||
-    (port === 0 && !allowZero)) {
+      (typeof port === 'string' && StringPrototypeTrim(port).length === 0) ||
+      +port !== (+port >>> 0) ||
+      port > 0xFFFF ||
+      (port === 0 && !allowZero)) {
     throw new ERR_SOCKET_BAD_PORT(name, port, allowZero);
   }
   return port | 0;
@@ -341,14 +341,16 @@ function validatePort(port, name = 'Port', allowZero = true) {
 
 /**
  * @callback validateAbortSignal
- * @param {string} signal
+ * @param {string=} signal
  * @param {string} name
  */
+
+/** @type {validateAbortSignal} */
 const validateAbortSignal = hideStackFrames((signal, name) => {
   if (signal !== undefined &&
-    (signal === null ||
-      typeof signal !== 'object' ||
-      !('aborted' in signal))) {
+      (signal === null ||
+        typeof signal !== 'object' ||
+        !('aborted' in signal))) {
     throw new ERR_INVALID_ARG_TYPE(name, 'AbortSignal', signal);
   }
 });
@@ -393,14 +395,11 @@ const validateUndefined = hideStackFrames((value, name) => {
 });
 
 /**
- * @callback validateUnion
  * @template T
  * @param {T} value
  * @param {string} name
  * @param {T[]} union
  */
-
-/** @type {validateUnion} */
 function validateUnion(value, name, union) {
   if (!ArrayPrototypeIncludes(union, value)) {
     throw new ERR_INVALID_ARG_TYPE(name, `('${ArrayPrototypeJoin(union, '|')}')`, value);