Use assertion utility

kgryte · kgryte · commit 66c2a013dbe6 · 2017-07-27T00:25:08.000-07:00
diff --git a/lib/node_modules/@stdlib/fs/read-json/lib/sync.js b/lib/node_modules/@stdlib/fs/read-json/lib/sync.js
@@ -7,6 +7,7 @@ var isObject = require( '@stdlib/assert/is-plain-object' );
 var readFile = require( '@stdlib/fs/read-file' ).sync;
 var removeBOM = require( '@stdlib/string/remove-utf8-bom' );
 var parseJSON = require( '@stdlib/utils/parse-json' );
+var instanceOf = require( '@stdlib/assert/instance-of' );
 
 
 // MAIN //
@@ -24,9 +25,10 @@ var parseJSON = require( '@stdlib/utils/parse-json' );
 *
 * @example
 * var resolve = require( 'path' ).resolve;
+* var instanceOf = require( '@stdlib/assert/instance-of' );
 *
-* var out = readJSONSync( resolve( __dirname, '../package.json' ) );
-* if ( out instanceof Error ) {
+* var out = readJSONSync( resolve( __dirname, '..', 'package.json' ) );
+* if ( instanceOf( out, Error ) ) {
 *     throw out;
 * }
 * console.dir( out );
@@ -49,7 +51,7 @@ function readJSONSync( file, options ) {
 		opts = {};
 	}
 	f = readFile( file, opts );
-	if ( f instanceof Error ) {
+	if ( instanceOf( f, Error ) ) {
 		return f;
 	}
 	f = f.toString();
