Fix lint errors

Author: kgryte

lib/node_modules/@stdlib/utils/copy/README.md

@@ -16,45 +16,47 @@ var copy = require( '@stdlib/utils/copy' );
 Copy or deep clone an input `value` to an arbitrary depth. The function accepts both `objects` and `primitives`.
 
 ``` javascript
-var value;
-var bool;
-var err1;
-var err2;
-var out;
-
 // Primitives...
-out = copy( 'beep' );
+var out = copy( 'beep' );
 // returns 'beep'
 
 // Objects...
-value = [{'a':1,'b':true,'c':[1,2,3]}];
+var value = [
+    {
+        'a': 1,
+        'b': true,
+        'c': [ 1, 2, 3 ]
+    }
+];
 out = copy( value );
-// returns [{'a':1,'b':true,'c':[1,2,3]}]
+// returns [ { 'a': 1, 'b': true, 'c': [ 1, 2, 3 ] } ]
 
-bool = ( value[0].c === out[0].c );
+var bool = ( value[0].c === out[0].c );
 // returns false
 
 // Error object...
-err1 = new TypeError( 'beep' );
+var err1 = new TypeError( 'beep' );
 
-err2 = copy( err1 );
+var err2 = copy( err1 );
 // returns <TypeError>
 ```
 
 The default behavior returns a __full__ deep copy of any `object`. To limit the copy depth, set the `level` option.
 
 ``` javascript
-var value;
-var bool;
-var out;
-
-value = [{'a':1,'b':true,'c':[1,2,3]}];
+var value = [
+    {
+        'a': 1,
+        'b': true,
+        'c': [ 1, 2, 3 ]
+    }
+];
 
 // Trivial case => return the same reference
-out = copy( value, 0 );
-// returns [{'a':1,'b':true,'c':[1,2,3]}]
+var out = copy( value, 0 );
+// returns [ { 'a': 1, 'b': true, 'c': [ 1, 2, 3 ] } ]
 
-bool = ( value[0] === out[0] );
+var bool = ( value[0] === out[0] );
 // returns true
 
 // Shallow copy:
@@ -142,6 +144,8 @@ bool = ( value[0].c === out[0].c );
 
 * Support for copying class instances is inherently __fragile__. Any instances with privileged access to variables (e.g., within closures) cannot be cloned. This stated, basic copying of class instances is supported. Provided an environment which supports ES5, the implementation is greedy and performs a deep clone of any arbitrary class instance and its properties. The implementation assumes that the concept of `level` applies only to the class instance reference, but not to its internal state.
 
+  <!-- eslint-disable no-underscore-dangle -->
+
   ``` javascript
   function Foo() {
       this._data = [ 1, 2, 3, 4 ];