chore: fix JavaScript lint errors

lib/node_modules/@stdlib/array/base/zip2views/lib/main.js

@@ -26,6 +26,71 @@ var accessors = require( '@stdlib/array/base/accessors' );
 var copy = require( '@stdlib/array/base/copy' );
 
 
+// FUNCTIONS //
+
+/**
+* Returns an accessor for returning the value associated with a label.
+*
+* @private
+* @param {Collection} arr - input array
+* @param {Function} getter - array element accessor
+* @returns {Function} accessor
+*/
+function getValue( arr, getter ) {
+	return get;
+
+	/**
+	* Returns the value associated with a label.
+	*
+	* @private
+	* @returns {*} result
+	*/
+	function get() {
+		return getter( arr, this._i ); // eslint-disable-line no-invalid-this
+	}
+}
+
+/**
+* Returns an accessor for setting the value associated with a label.
+*
+* @private
+* @param {Collection} arr - input array
+* @param {Function} setter - array element accessor
+* @returns {Function} accessor
+*/
+function setValue( arr, setter ) {
+	return set;
+
+	/**
+	* Sets the value associated with a label.
+	*
+	* @private
+	* @param {*} value - value to set
+	*/
+	function set( value ) {
+		setter( arr, this._i, value ); // eslint-disable-line no-invalid-this
+	}
+}
+
+// eslint-disable-next-line stdlib/jsdoc-typedef-typos
+/**
+* Constructor for creating a composite view of zipped elements.
+*
+* ## Notes
+*
+* -   The constructor's prototype is reset at the start of each `zip2views` invocation (see below) so that views created by one invocation never inherit label accessors defined by a different invocation.
+*
+* @private
+* @constructor
+* @param {NonNegativeInteger} i - element index
+* @returns {Datum} datum instance
+*/
+function Datum( i ) {
+	setNonEnumerableReadOnly( this, '_i', i );
+	return this;
+}
+
+
 // MAIN //
 
 /**
@@ -102,19 +167,8 @@ function zip2views( arrays, labels ) {
 	// Create a copy of provided labels to prevent external mutation:
 	keys = copy( labels );
 
-	// eslint-disable-next-line stdlib/jsdoc-typedef-typos
-	/**
-	* Constructor for creating a composite view of zipped elements.
-	*
-	* @private
-	* @constructor
-	* @param {NonNegativeInteger} i - element index
-	* @returns {Datum} datum instance
-	*/
-	function Datum( i ) {
-		setNonEnumerableReadOnly( this, '_i', i );
-		return this;
-	}
+	// Reset the shared constructor's prototype so that this invocation's views only ever expose this invocation's labels:
+	Datum.prototype = {};
 
 	// Define read/write accessors for each label...
 	for ( i = 0; i < M; i++ ) {
@@ -132,50 +186,6 @@ function zip2views( arrays, labels ) {
 	}
 	return out;
 
-	/**
-	* Returns an accessor for returning the value associated with a label.
-	*
-	* @private
-	* @param {Collection} arr - input array
-	* @param {Function} getter - array element accessor
-	* @returns {Function} accessor
-	*/
-	function getValue( arr, getter ) {
-		return get;
-
-		/**
-		* Returns the value associated with a label.
-		*
-		* @private
-		* @returns {*} result
-		*/
-		function get() {
-			return getter( arr, this._i ); // eslint-disable-line no-invalid-this
-		}
-	}
-
-	/**
-	* Returns an accessor for setting the value associated with a label.
-	*
-	* @private
-	* @param {Collection} arr - input array
-	* @param {Function} setter - array element accessor
-	* @returns {Function} accessor
-	*/
-	function setValue( arr, setter ) {
-		return set;
-
-		/**
-		* Sets the value associated with a label.
-		*
-		* @private
-		* @param {*} value - value to set
-		*/
-		function set( value ) {
-			setter( arr, this._i, value ); // eslint-disable-line no-invalid-this
-		}
-	}
-
 	/**
 	* Serializes a datum to JSON.
 	*