Implemented Symbol.split package as per RFC requirements

.github/workflows/run_tests_coverage.yml

@@ -120,7 +120,7 @@ jobs:
         # Pin action to full length commit SHA
         uses: actions/setup-node@2028fbc5c25fe9cf00d9f06a71cc4710d4507903 # v6.0.0
         with:
-          node-version: 20 # 'lts/*'
+          node-version: 16 # Using Node.js 16 to match project's test matrix
         timeout-minutes: 5
 
       # Cache dependencies:

lib/node_modules/@stdlib/symbol/split/README.md

@@ -0,0 +1,75 @@
+<!-
+@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.
+-->
+
+# Symbol.split
+
+> The well-known symbol `Symbol.split`.
+
+<section class="usage">
+
+## Usage
+
+```javascript
+var hasSplitSupport = require( '@stdlib/assert/has-symbol-support' )();
+var split = require( '@stdlib/symbol/split' );
+
+var bool = ( typeof split === 'symbol' );
+// returns <boolean>
+```
+
+</section>
+
+<!-- /.usage -->
+
+<section class="examples">
+
+## Examples
+
+<!-- eslint no-undef: "error" -->
+
+```javascript
+var hasSplitSupport = require( '@stdlib/assert/has-symbol-support' )();
+var split = require( '@stdlib/symbol/split' );
+
+if ( hasSplitSupport ) {
+    console.log( split === Symbol.split );
+    // => true
+} else {
+    console.log( '@stdlib/symbol/split' );
+}
+```
+
+</section>
+
+<!-- /.examples -->
+
+<!-- Section for related `stdlib` packages. Do not manually edit this section, as it is automatically populated. -->
+
+<section class="related">
+
+</section>
+
+<!-- /.related -->
+
+<!-- Section for all links. Make sure to keep an empty line after the `section` element and another before the `/section` close. -->
+
+<section class="links">
+
+</section>
+
+<!-- /.links -->

lib/node_modules/@stdlib/symbol/split/lib/browser.js

@@ -0,0 +1,37 @@
+/**
+* @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 //
+
+/**
+* The well-known symbol `@@split`.
+*
+* @constant
+* @name SPLIT
+* @type {symbol}
+* @see [MDN]{@link https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Symbol/split}
+* @default Symbol.split
+*/
+var SPLIT = ( typeof Symbol === 'function' && typeof Symbol.split === 'symbol' ) ? Symbol.split : '@@split'; // eslint-disable-line no-undef
+
+
+// EXPORTS //
+
+module.exports = SPLIT;

lib/node_modules/@stdlib/symbol/split/main.js

@@ -0,0 +1,37 @@
+/**
+* @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 //
+
+/**
+* The well-known symbol `@@split`.
+*
+* @constant
+* @name SPLIT
+* @type {symbol}
+* @see [MDN]{@link https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Symbol/split}
+* @default Symbol.split
+*/
+var SPLIT = ( typeof Symbol === 'function' && typeof Symbol.split === 'symbol' ) ? Symbol.split : '@@split'; // eslint-disable-line no-undef
+
+
+// EXPORTS //
+
+module.exports = SPLIT;

lib/node_modules/@stdlib/symbol/split/package.json

@@ -0,0 +1,79 @@
+{
+  "name": "@stdlib/symbol/split",
+  "version": "0.0.0",
+  "description": "The well-known symbol `Symbol.split`. ",
+  "license": "Apache-2.0",
+  "author": {
+    "name": "The Stdlib Authors",
+    "url": "https://github.com/stdlib-js/stdlib/graphs/contributors"
+  },
+  "contributors": [
+    {
+      "name": "The Stdlib Authors",
+      "url": "https://github.com/stdlib-js/stdlib/graphs/contributors"
+    }
+  ],
+  "main": "./lib",
+  "directories": {
+    "doc": "./docs",
+    "example": "./examples",
+    "lib": "./lib",
+    "test": "./test"
+  },
+  "scripts": {
+    "test": "make test",
+    "test-cov": "make test-cov",
+    "examples": "make examples"
+  },
+  "homepage": "https://github.com/stdlib-js/stdlib",
+  "repository": {
+    "type": "git",
+    "url": "git://github.com/stdlib-js/stdlib.git"
+  },
+  "bugs": {
+    "url": "https://github.com/stdlib-js/stdlib/issues"
+  },
+  "dependencies": {},
+  "devDependencies": {
+    "@stdlib/assert/has-symbol-support": "^0.0.0"
+  },
+  "engines": {
+    "node": ">=0.10.0",
+    "npm": ">2.7.0"
+  },
+  "os": [
+    "aix",
+    "darwin",
+    "freebsd",
+    "linux",
+    "macos",
+    "openbsd",
+    "posix",
+    "sunos",
+    "win32",
+    "windows"
+  ],
+  "keywords": [
+    "stdlib",
+    "stdtypes",
+    "types",
+    "utils",
+    "util",
+    "utilities",
+    "utility",
+    "es6",
+    "es2015",
+    "ecmascript",
+    "symbol",
+    "symbols",
+    "split",
+    "regexp",
+    "regex",
+    "regexp.split",
+    "string.split"
+  ],
+  "__stdlib__": {},
+  "browser": {
+    "./lib/main.js": "./lib/browser.js"
+  }
+}

lib/node_modules/@stdlib/symbol/split/test/test.js

@@ -0,0 +1,61 @@
+/**
+* @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';
+
+// MODULES //
+
+var tape = require( 'tape' );
+var hasSymbolSupport = require( '@stdlib/assert/has-symbol-support' )();
+var SPLIT = require( './../lib' );
+
+
+// TESTS //
+
+tape( 'main export is a symbol or string', function test( t ) {
+	t.ok( typeof SPLIT === 'symbol' || typeof SPLIT === 'string', 'main export is a symbol or string' );
+	t.end();
+});
+
+tape( 'if environment has `Symbol` support, the export is a symbol', function test( t ) {
+	if ( hasSymbolSupport ) {
+		t.equal( typeof SPLIT, 'symbol', 'is a symbol' );
+	}
+	t.end();
+});
+
+tape( 'if environment does not have `Symbol` support, the export is a string', function test( t ) {
+	if ( !hasSymbolSupport ) {
+		t.equal( typeof SPLIT, 'string', 'is a string' );
+	}
+	t.end();
+});
+
+tape( 'the export equals `Symbol.split` if environment has `Symbol` support', function test( t ) {
+	if ( hasSymbolSupport ) {
+		t.equal( SPLIT, Symbol.split, 'equals Symbol.split' );
+	}
+	t.end();
+});
+
+tape( 'the export equals `'@@split'` if environment does not have `Symbol` support', function test( t ) {
+	if ( !hasSymbolSupport ) {
+		t.equal( SPLIT, '@@split', 'equals @@split' );
+	}
+	t.end();
+});