lib: fix linting warnings and errors

Author: danielleadams

lib/internal/bootstrap/node.js

@@ -56,7 +56,7 @@ const {
 } = primordials;
 const config = internalBinding('config');
 const internalTimers = require('internal/timers');
-const { deprecate, lazyDOMExceptionClass } = require('internal/util');
+const { deprecate } = require('internal/util');
 
 setupProcessObject();
 

lib/internal/streams/utils.js

@@ -6,7 +6,6 @@ const {
   SymbolIterator,
 } = primordials;
 
-const kDestroyed = Symbol('kDestroyed');
 const kIsErrored = Symbol('kIsErrored');
 const kIsReadable = Symbol('kIsReadable');
 const kIsDisturbed = Symbol('kIsDisturbed');
@@ -112,14 +111,6 @@ function isReadableFinished(stream, strict) {
   );
 }
 
-function isDisturbed(stream) {
-  return !!(stream && (
-    stream.readableDidRead ||
-    stream.readableAborted ||
-    stream[kIsDisturbed]
-  ));
-}
-
 function isReadable(stream) {
   if (stream && stream[kIsReadable] != null) return stream[kIsReadable];
   const r = isReadableNodeStream(stream);

lib/readline.js

@@ -1283,7 +1283,11 @@ Interface.prototype._ttyWrite = function(s, key) {
 /**
  * Creates an `AsyncIterator` object that iterates through
  * each line in the input stream as a string.
- * @returns {Symbol.AsyncIterator}
+ * @typedef {{
+ *   [Symbol.asyncIterator]: () => InterfaceAsyncIterator,
+ *   next: () => Promise<string>
+ * }} InterfaceAsyncIterator
+ * @returns {InterfaceAsyncIterator}
  */
 Interface.prototype[SymbolAsyncIterator] = function() {
   if (this[kLineObjectStream] === undefined) {