refactor: use ndarray defaults

Author: kgryte

lib/node_modules/@stdlib/ndarray/ctor/lib/defaults.json

@@ -33,9 +33,9 @@ var isDataType = require( '@stdlib/ndarray/base/assert/is-data-type' );
 var isBufferLengthCompatible = require( '@stdlib/ndarray/base/assert/is-buffer-length-compatible' );
 var numel = require( '@stdlib/ndarray/base/numel' );
 var parent = require( '@stdlib/ndarray/base/ctor' ); // eslint-disable-line stdlib/no-redeclare
+var defaults = require( '@stdlib/ndarray/defaults' );
 var inherit = require( '@stdlib/utils/inherit' );
 var format = require( '@stdlib/string/format' );
-var defaults = require( './defaults.json' );
 var iget = require( './iget.js' );
 var iset = require( './iset.js' );
 var get = require( './get.js' );
@@ -57,6 +57,9 @@ var validate = require( './validate.js' );
 */
 var MAX_DIMS = 32767|0;
 
+var INDEX_MODE = defaults.get( 'index_mode' );
+var READONLY = false;
+
 
 // MAIN //
 
@@ -150,8 +153,8 @@ function ndarray( dtype, buffer, shape, strides, offset, order, options ) {
 		throw new Error( 'invalid arguments. Input buffer is incompatible with the specified meta data. Ensure that the offset is valid with regard to the strides array and that the buffer has enough elements to satisfy the desired array shape.' );
 	}
 	opts = {};
-	opts.mode = defaults.mode;
-	opts.readonly = defaults.readonly;
+	opts.mode = INDEX_MODE;
+	opts.readonly = READONLY;
 	if ( arguments.length > 6 ) {
 		err = validate( opts, options );
 		if ( err ) {