refactor: add function to resolve offsets

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---

Author: kgryte

lib/node_modules/@stdlib/ndarray/base/unary-reduce-strided1d-to-struct/lib/offsets.js

@@ -0,0 +1,42 @@
+/**
+* @license Apache-2.0
+*
+* Copyright (c) 2025 The Stdlib Authors.
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*    http://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*/
+
+'use strict';
+
+// MAIN //
+
+/**
+* Resolves index offsets from a list of ndarray-like objects.
+*
+* @private
+* @param {ArrayLikeObject<Object>} arrays - list of ndarray-like objects
+* @returns {NonNegativeIntegerArray} list of offsets
+*/
+function offsets( arrays ) {
+	var out = [];
+	var i;
+	for ( i = 0; i < arrays.length; i++ ) {
+		out.push( arrays[ i ].offset );
+	}
+	return out;
+}
+
+
+// EXPORTS //
+
+module.exports = offsets;