feat: add support for Symbol.hasInstance

---
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---

Author: kgryte

lib/node_modules/@stdlib/assert/instance-of/lib/main.js

@@ -20,9 +20,16 @@
 
 // MODULES //
 
+var hasHasInstanceSymbolSupport = require( '@stdlib/assert/has-has-instance-symbol-support' ); // eslint-disable-line id-length
+var HasInstanceSymbol = require( '@stdlib/symbol/has-instance' );
 var format = require( '@stdlib/string/format' );
 
 
+// VARIABLES //
+
+var hasSupport = hasHasInstanceSymbolSupport();
+
+
 // MAIN //
 
 /**
@@ -55,7 +62,14 @@ var format = require( '@stdlib/string/format' );
 */
 function instanceOf( value, constructor ) {
 	// TODO: replace with `isCallable` check
-	if ( typeof constructor !== 'function' ) {
+	if (
+		typeof constructor !== 'function' &&
+		!(
+			hasSupport &&
+			typeof constructor === 'object' &&
+			typeof constructor[ HasInstanceSymbol ] === 'function'
+		)
+	) {
 		throw new TypeError( format( 'invalid argument. Second argument must be callable. Value: `%s`.', constructor ) );
 	}
 	return ( value instanceof constructor );

lib/node_modules/@stdlib/assert/instance-of/test/test.js

@@ -21,6 +21,9 @@
 // MODULES //
 
 var tape = require( 'tape' );
+var isArray = require( '@stdlib/assert/is-array' );
+var hasHasInstanceSymbolSupport = require( '@stdlib/assert/has-has-instance-symbol-support' ); // eslint-disable-line id-length
+var HasInstanceSymbol = require( '@stdlib/symbol/has-instance' );
 var inherit = require( '@stdlib/utils/inherit' );
 var Boolean = require( '@stdlib/boolean/ctor' );
 var Function = require( '@stdlib/function/ctor' );
@@ -29,6 +32,13 @@ var Object = require( '@stdlib/object/ctor' );
 var instanceOf = require( './../lib' );
 
 
+// VARIABLES //
+
+var opts = {
+	'skip': !hasHasInstanceSymbolSupport()
+};
+
+
 // TESTS //
 
 tape( 'main export is a function', function test( t ) {
@@ -176,3 +186,19 @@ tape( 'the function returns `false` if provided primitives and their correspondi
 
 	t.end();
 });
+
+tape( 'the function supports ES2015+ environments supporting `Symbol.hasInstance`', opts, function test( t ) {
+	var bool;
+	var obj;
+	var x;
+
+	x = [ 1, 2, 3 ];
+
+	obj = {};
+	obj[ HasInstanceSymbol ] = isArray;
+
+	bool = instanceOf( x, obj );
+	t.strictEqual( bool, true, 'returns expected value' );
+
+	t.end();
+});