refactor: add function to set view offsets

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Author: kgryte

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

@@ -0,0 +1,52 @@
+/**
+* @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 //
+
+/**
+* Sets view offsets according to a list of index offsets.
+*
+* ## Notes
+*
+* -   This function skips the second element in the list of index offsets, as that is assumed to correspond to the output ndarray which does not have a corresponding view. Meaning, the list of views is expected to have `N` elements, and the list of index offsets is expected to have `N+1` elements.
+* -   This function mutates the provides view objects.
+*
+* @private
+* @param {Array<Object>} views - list of ndarray-like objects representing ndarray views
+* @param {NonNegativeIntegerArray} offsets - list of index offsets
+* @returns {Array<Object>} updated views
+*/
+function setViewOffsets( views, offsets ) {
+	var i;
+	var j;
+	for ( i = 0, j = 0; i < offsets.length; i++ ) {
+		if ( i === 1 ) { // note: expected to correspond to the output ndarray which does not have a corresponding view
+			continue;
+		}
+		views[ j ].offset = offsets[ i ];
+		j += 1;
+	}
+	return views;
+}
+
+
+// EXPORTS //
+
+module.exports = setViewOffsets;