diff --git a/lib/node_modules/@stdlib/plot/vega/mark/area/orientations/README.md b/lib/node_modules/@stdlib/plot/vega/mark/area/orientations/README.md
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--- /dev/null
+++ b/lib/node_modules/@stdlib/plot/vega/mark/area/orientations/README.md
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+<!--
+
+@license Apache-2.0
+
+Copyright (c) 2026 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.
+
+-->
+
+# areaMarkOrientations
+
+> List of supported Vega area mark orientations.
+
+<!-- Section to include introductory text. Make sure to keep an empty line after the intro `section` element and another before the `/section` close. -->
+
+<section class="intro">
+
+</section>
+
+<!-- /.intro -->
+
+<!-- Package usage documentation. -->
+
+<section class="usage">
+
+## Usage
+
+```javascript
+var areaMarkOrientations = require( '@stdlib/plot/vega/mark/area/orientations' );
+```
+
+#### areaMarkOrientations()
+
+Returns a list of area mark orientations.
+
+```javascript
+var out = areaMarkOrientations();
+// returns [ 'horizontal', 'vertical' ]
+```
+
+</section>
+
+<!-- /.usage -->
+
+<!-- Package usage notes. Make sure to keep an empty line after the `section` element and another before the `/section` close. -->
+
+<section class="notes">
+
+</section>
+
+<!-- /.notes -->
+
+<!-- Package usage examples. -->
+
+<section class="examples">
+
+## Examples
+
+<!-- eslint no-undef: "error" -->
+
+```javascript
+var contains = require( '@stdlib/array/base/assert/contains' ).factory;
+var areaMarkOrientations = require( '@stdlib/plot/vega/mark/area/orientations' );
+
+var isAreaMarkOrientation = contains( areaMarkOrientations() );
+
+var bool = isAreaMarkOrientation( 'horizontal' );
+// returns true
+
+bool = isAreaMarkOrientation( 'vertical' );
+// returns true
+
+bool = isAreaMarkOrientation( 'beep' );
+// returns false
+
+bool = isAreaMarkOrientation( 'boop' );
+// returns false
+```
+
+</section>
+
+<!-- /.examples -->
+
+<!-- Section to include cited references. If references are included, add a horizontal rule *before* the section. Make sure to keep an empty line after the `section` element and another before the `/section` close. -->
+
+<section class="references">
+
+</section>
+
+<!-- /.references -->
+
+<!-- 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 -->
diff --git a/lib/node_modules/@stdlib/plot/vega/mark/area/orientations/benchmark/benchmark.js b/lib/node_modules/@stdlib/plot/vega/mark/area/orientations/benchmark/benchmark.js
new file mode 100644
index 000000000000..6b87f7c3ef37
--- /dev/null
+++ b/lib/node_modules/@stdlib/plot/vega/mark/area/orientations/benchmark/benchmark.js
@@ -0,0 +1,48 @@
+/**
+* @license Apache-2.0
+*
+* Copyright (c) 2026 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 bench = require( '@stdlib/bench' );
+var isStringArray = require( '@stdlib/assert/is-string-array' ).primitives;
+var pkg = require( './../package.json' ).name;
+var areaMarkOrientations = require( './../lib' );
+
+
+// MAIN //
+
+bench( pkg, function benchmark( b ) {
+	var out;
+	var i;
+
+	b.tic();
+	for ( i = 0; i < b.iterations; i++ ) {
+		out = areaMarkOrientations();
+		if ( out.length < 2 ) {
+			b.fail( 'should return an array' );
+		}
+	}
+	b.toc();
+	if ( !isStringArray( out ) ) {
+		b.fail( 'should return an array of strings' );
+	}
+	b.pass( 'benchmark finished' );
+	b.end();
+});
diff --git a/lib/node_modules/@stdlib/plot/vega/mark/area/orientations/docs/repl.txt b/lib/node_modules/@stdlib/plot/vega/mark/area/orientations/docs/repl.txt
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index 000000000000..e2c37c2f68c5
--- /dev/null
+++ b/lib/node_modules/@stdlib/plot/vega/mark/area/orientations/docs/repl.txt
@@ -0,0 +1,17 @@
+
+{{alias}}()
+    Returns a list of area mark orientations.
+
+    Returns
+    -------
+    out: Array<string>
+        List of area mark orientations.
+
+    Examples
+    --------
+    > var out = {{alias}}()
+    [ 'horizontal', 'vertical' ]
+
+    See Also
+    --------
+
diff --git a/lib/node_modules/@stdlib/plot/vega/mark/area/orientations/docs/types/index.d.ts b/lib/node_modules/@stdlib/plot/vega/mark/area/orientations/docs/types/index.d.ts
new file mode 100644
index 000000000000..043b51e633f2
--- /dev/null
+++ b/lib/node_modules/@stdlib/plot/vega/mark/area/orientations/docs/types/index.d.ts
@@ -0,0 +1,35 @@
+/*
+* @license Apache-2.0
+*
+* Copyright (c) 2026 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.
+*/
+
+// TypeScript Version: 4.1
+
+/**
+* Returns a list of area mark orientations.
+*
+* @returns list of area mark orientations
+*
+* @example
+* var list = areaMarkOrientations();
+* // returns [ 'horizontal', 'vertical' ]
+*/
+declare function areaMarkOrientations(): Array<string>;
+
+
+// EXPORTS //
+
+export = areaMarkOrientations;
diff --git a/lib/node_modules/@stdlib/plot/vega/mark/area/orientations/docs/types/test.ts b/lib/node_modules/@stdlib/plot/vega/mark/area/orientations/docs/types/test.ts
new file mode 100644
index 000000000000..08964c127c47
--- /dev/null
+++ b/lib/node_modules/@stdlib/plot/vega/mark/area/orientations/docs/types/test.ts
@@ -0,0 +1,32 @@
+/*
+* @license Apache-2.0
+*
+* Copyright (c) 2026 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.
+*/
+
+import areaMarkOrientations = require( './index' );
+
+
+// TESTS //
+
+// The function returns an array of strings...
+{
+	areaMarkOrientations(); // $ExpectType string[]
+}
+
+// The compiler throws an error if the function is provided any arguments...
+{
+	areaMarkOrientations( 9 ); // $ExpectError
+}
diff --git a/lib/node_modules/@stdlib/plot/vega/mark/area/orientations/examples/index.js b/lib/node_modules/@stdlib/plot/vega/mark/area/orientations/examples/index.js
new file mode 100644
index 000000000000..0b0cece22821
--- /dev/null
+++ b/lib/node_modules/@stdlib/plot/vega/mark/area/orientations/examples/index.js
@@ -0,0 +1,40 @@
+/**
+* @license Apache-2.0
+*
+* Copyright (c) 2026 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';
+
+var contains = require( '@stdlib/array/base/assert/contains' ).factory;
+var areaMarkOrientations = require( './../lib' );
+
+var isAreaMarkOrientation = contains( areaMarkOrientations() );
+
+var bool = isAreaMarkOrientation( 'horizontal' );
+console.log( bool );
+// => true
+
+bool = isAreaMarkOrientation( 'vertical' );
+console.log( bool );
+// => true
+
+bool = isAreaMarkOrientation( 'beep' );
+console.log( bool );
+// => false
+
+bool = isAreaMarkOrientation( 'boop' );
+console.log( bool );
+// => false
diff --git a/lib/node_modules/@stdlib/plot/vega/mark/area/orientations/lib/data.json b/lib/node_modules/@stdlib/plot/vega/mark/area/orientations/lib/data.json
new file mode 100644
index 000000000000..38176275f512
--- /dev/null
+++ b/lib/node_modules/@stdlib/plot/vega/mark/area/orientations/lib/data.json
@@ -0,0 +1,4 @@
+[
+  "horizontal",
+  "vertical"
+]
diff --git a/lib/node_modules/@stdlib/plot/vega/mark/area/orientations/lib/index.js b/lib/node_modules/@stdlib/plot/vega/mark/area/orientations/lib/index.js
new file mode 100644
index 000000000000..361bfc0f950b
--- /dev/null
+++ b/lib/node_modules/@stdlib/plot/vega/mark/area/orientations/lib/index.js
@@ -0,0 +1,40 @@
+/**
+* @license Apache-2.0
+*
+* Copyright (c) 2026 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';
+
+/**
+* Return a list of area mark orientations.
+*
+* @module @stdlib/plot/vega/mark/area/orientations
+*
+* @example
+* var areaMarkOrientations = require( '@stdlib/plot/vega/mark/area/orientations' );
+*
+* var out = areaMarkOrientations();
+* // returns [ 'horizontal', 'vertical' ]
+*/
+
+// MODULES //
+
+var main = require( './main.js' );
+
+
+// EXPORTS //
+
+module.exports = main;
diff --git a/lib/node_modules/@stdlib/plot/vega/mark/area/orientations/lib/main.js b/lib/node_modules/@stdlib/plot/vega/mark/area/orientations/lib/main.js
new file mode 100644
index 000000000000..4f57e6891fdf
--- /dev/null
+++ b/lib/node_modules/@stdlib/plot/vega/mark/area/orientations/lib/main.js
@@ -0,0 +1,44 @@
+/**
+* @license Apache-2.0
+*
+* Copyright (c) 2026 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 DATA = require( './data.json' );
+
+
+// MAIN //
+
+/**
+* Returns a list of area mark orientations.
+*
+* @returns {StringArray} list of area mark orientations
+*
+* @example
+* var out = orientations();
+* // returns [ 'horizontal', 'vertical' ]
+*/
+function orientations() {
+	return DATA.slice();
+}
+
+
+// EXPORTS //
+
+module.exports = orientations;
diff --git a/lib/node_modules/@stdlib/plot/vega/mark/area/orientations/package.json b/lib/node_modules/@stdlib/plot/vega/mark/area/orientations/package.json
new file mode 100644
index 000000000000..41f5b5d6e307
--- /dev/null
+++ b/lib/node_modules/@stdlib/plot/vega/mark/area/orientations/package.json
@@ -0,0 +1,65 @@
+{
+  "name": "@stdlib/plot/vega/mark/area/orientations",
+  "version": "0.0.0",
+  "description": "List of supported Vega area mark orientations.",
+  "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": {
+    "benchmark": "./benchmark",
+    "doc": "./docs",
+    "example": "./examples",
+    "lib": "./lib",
+    "test": "./test"
+  },
+  "types": "./docs/types",
+  "scripts": {},
+  "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": {},
+  "engines": {
+    "node": ">=0.10.0",
+    "npm": ">2.7.0"
+  },
+  "os": [
+    "aix",
+    "darwin",
+    "freebsd",
+    "linux",
+    "macos",
+    "openbsd",
+    "sunos",
+    "win32",
+    "windows"
+  ],
+  "keywords": [
+    "stdlib",
+    "plot",
+    "vega",
+    "mark",
+    "area",
+    "orient",
+    "orientations",
+    "utilities",
+    "utility",
+    "utils",
+    "util"
+  ],
+  "__stdlib__": {}
+}
diff --git a/lib/node_modules/@stdlib/plot/vega/mark/area/orientations/test/test.js b/lib/node_modules/@stdlib/plot/vega/mark/area/orientations/test/test.js
new file mode 100644
index 000000000000..548556cc5775
--- /dev/null
+++ b/lib/node_modules/@stdlib/plot/vega/mark/area/orientations/test/test.js
@@ -0,0 +1,47 @@
+/**
+* @license Apache-2.0
+*
+* Copyright (c) 2026 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 areaMarkOrientations = require( './../lib' );
+
+
+// TESTS //
+
+tape( 'main export is a function', function test( t ) {
+	t.ok( true, __filename );
+	t.strictEqual( typeof areaMarkOrientations, 'function', 'main export is a function' );
+	t.end();
+});
+
+tape( 'the function returns a list of area mark orientations', function test( t ) {
+	var expected;
+	var actual;
+
+	expected = [
+		'horizontal',
+		'vertical'
+	];
+	actual = areaMarkOrientations();
+
+	t.deepEqual( actual, expected, 'returns expected value' );
+	t.end();
+});