diff --git a/lib/node_modules/@stdlib/string/base/for-each-grapheme-cluster/README.md b/lib/node_modules/@stdlib/string/base/for-each-grapheme-cluster/README.md
new file mode 100644
index 00000000000..0b0507c2f39
--- /dev/null
+++ b/lib/node_modules/@stdlib/string/base/for-each-grapheme-cluster/README.md
@@ -0,0 +1,146 @@
+
+
+# forEachGraphemeCluster
+
+> Invokes a function for each grapheme cluster (i.e., user-perceived character) in a string.
+
+
+
+
+
+
+
+
+
+
+
+## Usage
+
+```javascript
+var forEachGraphemeCluster = require( '@stdlib/string/base/for-each-grapheme-cluster' );
+```
+
+#### forEachGraphemeCluster( str, clbk\[, thisArg ] )
+
+Invokes a function for each grapheme cluster (i.e., user-perceived character) in a string.
+
+```javascript
+function log( value, index ) {
+ console.log( '%d: %s', index, value );
+}
+
+forEachGraphemeCluster( 'Beep!', log );
+/* =>
+ 0: B
+ 1: e
+ 2: e
+ 3: p
+ 4: !
+*/
+```
+
+The invoked function is provided three arguments:
+
+- **value**: grapheme cluster.
+- **index**: starting grapheme cluster index.
+- **str**: input string.
+
+To set the function execution context, provide a `thisArg`.
+
+```javascript
+function clbk() {
+ this.count += 1;
+}
+
+var str = 'Hello, world!';
+
+var ctx = {
+ 'count': 0
+};
+
+forEachGraphemeCluster( str, clbk, ctx );
+
+var bool = ( str.length === ctx.count );
+// returns true
+```
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+## Examples
+
+
+
+```javascript
+var forEachGraphemeCluster = require( '@stdlib/string/base/for-each-grapheme-cluster' );
+
+function log( value, index ) {
+ console.log( '%d: %s', index, value );
+}
+
+forEachGraphemeCluster( 'presidential election', log );
+forEachGraphemeCluster( 'Iñtërnâtiônàlizætiøn', log );
+forEachGraphemeCluster( '🌷🍕', log );
+forEachGraphemeCluster( '\uD834\uDD1E', log );
+```
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
diff --git a/lib/node_modules/@stdlib/string/base/for-each-grapheme-cluster/benchmark/benchmark.js b/lib/node_modules/@stdlib/string/base/for-each-grapheme-cluster/benchmark/benchmark.js
new file mode 100644
index 00000000000..f802ee4cd85
--- /dev/null
+++ b/lib/node_modules/@stdlib/string/base/for-each-grapheme-cluster/benchmark/benchmark.js
@@ -0,0 +1,61 @@
+/**
+* @license Apache-2.0
+*
+* Copyright (c) 2023 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 isString = require( '@stdlib/assert/is-string' ).isPrimitive;
+var pkg = require( './../package.json' ).name;
+var forEach = require( './../lib' );
+
+
+// MAIN //
+
+bench( pkg, function benchmark( b ) {
+ var values;
+ var out;
+ var i;
+
+ values = [
+ 'Iñtërnâtiônàlizætiøn',
+ 'presidential election',
+ '🐶🐮🐷🐰🐸'
+ ];
+
+ b.tic();
+ for ( i = 0; i < b.iterations; i++ ) {
+ out = forEach( values[ i%values.length ], clbk );
+ if ( typeof out !== 'string' ) {
+ b.fail( 'should return a string' );
+ }
+ }
+ b.toc();
+ if ( !isString( out ) ) {
+ b.fail( 'should return a string' );
+ }
+ b.pass( 'benchmark finished' );
+ b.end();
+
+ function clbk( v ) {
+ if ( typeof v !== 'string' ) {
+ b.fail( 'unexpected value' );
+ }
+ }
+});
diff --git a/lib/node_modules/@stdlib/string/base/for-each-grapheme-cluster/docs/repl.txt b/lib/node_modules/@stdlib/string/base/for-each-grapheme-cluster/docs/repl.txt
new file mode 100644
index 00000000000..a479c2b8f61
--- /dev/null
+++ b/lib/node_modules/@stdlib/string/base/for-each-grapheme-cluster/docs/repl.txt
@@ -0,0 +1,38 @@
+
+{{alias}}( str, clbk[, thisArg] )
+ Invokes a function for each grapheme cluster (i.e., user-perceived
+ character) in a string.
+
+ When invoked, the provided function is provided three arguments:
+
+ - value: grapheme cluster
+ - index: starting grapheme cluster index
+ - str: input string
+
+ Parameters
+ ----------
+ str: string
+ Input string over which to iterate.
+
+ clbk: Function
+ The function to invoke for each grapheme cluster in the input string.
+
+ thisArg: any (optional)
+ Execution context.
+
+ Returns
+ -------
+ out: string
+ Input string.
+
+ Examples
+ --------
+ > var n = 0;
+ > function fcn() { n += 1; };
+ > {{alias}}( 'hello world!', fcn );
+ > n
+ 12
+
+ See Also
+ --------
+
diff --git a/lib/node_modules/@stdlib/string/base/for-each-grapheme-cluster/docs/types/index.d.ts b/lib/node_modules/@stdlib/string/base/for-each-grapheme-cluster/docs/types/index.d.ts
new file mode 100644
index 00000000000..e68abee3684
--- /dev/null
+++ b/lib/node_modules/@stdlib/string/base/for-each-grapheme-cluster/docs/types/index.d.ts
@@ -0,0 +1,93 @@
+/*
+* @license Apache-2.0
+*
+* Copyright (c) 2023 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: 2.0
+
+/**
+* Callback invoked for each grapheme cluster (i.e., user-perceived character) in a string.
+*
+* @returns result
+*/
+type Nullary = () => any;
+
+/**
+* Callback invoked for each grapheme cluster (i.e., user-perceived character) in a string.
+*
+* @param value - grapheme cluster
+* @returns result
+*/
+type Unary = ( value: string ) => any;
+
+/**
+* Callback invoked for each grapheme cluster (i.e., user-perceived character) in a string.
+*
+* @param value - grapheme cluster
+* @param index - string grapheme cluster index
+* @returns result
+*/
+type Binary = ( value: string, index: number ) => any;
+
+/**
+* Callback invoked for each grapheme cluster (i.e., user-perceived character) in a string.
+*
+* @param value - grapheme cluster
+* @param index - string grapheme cluster index
+* @param str - input string
+* @returns result
+*/
+type Ternary = ( value: string, index: number, str: string ) => any;
+
+/**
+* Callback invoked for each grapheme cluster (i.e., user-perceived character) in a string.
+*
+* @param value - grapheme cluster
+* @param index - starting grapheme cluster index
+* @param str - input string
+* @returns result
+*/
+type Callback = Nullary | Unary | Binary | Ternary;
+
+/**
+* Invokes a function for each grapheme cluster (i.e., user-perceived character) in a string.
+*
+* ## Notes
+*
+* - When invoked, the provided function is provided three arguments:
+*
+* - **value**: grapheme cluster.
+* - **index**: starting grapheme cluster index.
+* - **str**: input string.
+*
+* @param str - input string
+* @param clbk - function to invoke
+* @param thisArg - execution context
+* @returns input string
+*
+* @example
+* function log( value, index ) {
+* console.log( '%d: %s', index, value );
+* }
+*
+* forEach( 'Hello, World!', log );
+*/
+declare function forEach( str: string, clbk: Callback, thisArg?: any ): string;
+
+
+// EXPORTS //
+
+export = forEach;
diff --git a/lib/node_modules/@stdlib/string/base/for-each-grapheme-cluster/docs/types/test.ts b/lib/node_modules/@stdlib/string/base/for-each-grapheme-cluster/docs/types/test.ts
new file mode 100644
index 00000000000..c1d98d1414d
--- /dev/null
+++ b/lib/node_modules/@stdlib/string/base/for-each-grapheme-cluster/docs/types/test.ts
@@ -0,0 +1,85 @@
+/*
+* @license Apache-2.0
+*
+* Copyright (c) 2023 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 forEach = require( './index' );
+
+/**
+* Callback function.
+*
+* @param v - argument
+* @returns result
+*/
+function clbk( v: string ): string {
+ return v;
+}
+
+// TESTS //
+
+// The function returns a string...
+{
+ forEach( 'presidential election', clbk ); // $ExpectType string
+ forEach( 'Iñtërnâtiônàlizætiøn', clbk, {} ); // $ExpectType string
+}
+
+// The compiler throws an error if the function is provided a first argument which is not a string...
+{
+ forEach( 1, clbk ); // $ExpectError
+ forEach( false, clbk ); // $ExpectError
+ forEach( true, clbk ); // $ExpectError
+ forEach( null, clbk ); // $ExpectError
+ forEach( [], clbk ); // $ExpectError
+ forEach( {}, clbk ); // $ExpectError
+ forEach( ( x: number ): number => x, clbk ); // $ExpectError
+
+ forEach( 1, clbk, {} ); // $ExpectError
+ forEach( false, clbk, {} ); // $ExpectError
+ forEach( true, clbk, {} ); // $ExpectError
+ forEach( null, clbk, {} ); // $ExpectError
+ forEach( [], clbk, {} ); // $ExpectError
+ forEach( {}, clbk, {} ); // $ExpectError
+ forEach( ( x: number ): number => x, clbk, {} ); // $ExpectError
+}
+
+// The compiler throws an error if the function is provided a second argument which is not a function having a supported signature...
+{
+ forEach( 'presidential election', 'abc' ); // $ExpectError
+ forEach( 'presidential election', 2 ); // $ExpectError
+ forEach( 'presidential election', true ); // $ExpectError
+ forEach( 'presidential election', false ); // $ExpectError
+ forEach( 'presidential election', null ); // $ExpectError
+ forEach( 'presidential election', {} ); // $ExpectError
+ forEach( 'presidential election', [] ); // $ExpectError
+
+ forEach( 'presidential election', 'abc', {} ); // $ExpectError
+ forEach( 'presidential election', 2, {} ); // $ExpectError
+ forEach( 'presidential election', true, {} ); // $ExpectError
+ forEach( 'presidential election', false, {} ); // $ExpectError
+ forEach( 'presidential election', null, {} ); // $ExpectError
+ forEach( 'presidential election', {}, {} ); // $ExpectError
+ forEach( 'presidential election', [], {} ); // $ExpectError
+
+ forEach( 'presidential election', ( x: number ): number => x ); // $ExpectError
+ forEach( 'presidential election', ( x: number ): number => x, {} ); // $ExpectError
+}
+
+// The compiler throws an error if the function is provided an unsupported number of arguments...
+{
+ forEach(); // $ExpectError
+ forEach( 'presidential election' ); // $ExpectError
+ forEach( 'presidential election', clbk, {}, 3 ); // $ExpectError
+}
diff --git a/lib/node_modules/@stdlib/string/base/for-each-grapheme-cluster/examples/index.js b/lib/node_modules/@stdlib/string/base/for-each-grapheme-cluster/examples/index.js
new file mode 100644
index 00000000000..b93ac6cd1ce
--- /dev/null
+++ b/lib/node_modules/@stdlib/string/base/for-each-grapheme-cluster/examples/index.js
@@ -0,0 +1,30 @@
+/**
+* @license Apache-2.0
+*
+* Copyright (c) 2023 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 forEachGraphemeCluster = require( './../lib' );
+
+function log( value, index ) {
+ console.log( '%d: %s', index, value );
+}
+
+forEachGraphemeCluster( 'presidential election', log );
+forEachGraphemeCluster( 'Iñtërnâtiônàlizætiøn', log );
+forEachGraphemeCluster( '🌷🍕', log );
+forEachGraphemeCluster( '\uD834\uDD1E', log );
diff --git a/lib/node_modules/@stdlib/string/base/for-each-grapheme-cluster/lib/index.js b/lib/node_modules/@stdlib/string/base/for-each-grapheme-cluster/lib/index.js
new file mode 100644
index 00000000000..96155d9db01
--- /dev/null
+++ b/lib/node_modules/@stdlib/string/base/for-each-grapheme-cluster/lib/index.js
@@ -0,0 +1,43 @@
+/**
+* @license Apache-2.0
+*
+* Copyright (c) 2023 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';
+
+/**
+* Invoke a function for each grapheme cluster (i.e., user-perceived character) in a string.
+*
+* @module @stdlib/string/base/for-each-grapheme-cluster
+*
+* @example
+* var forEach = require( '@stdlib/string/base/for-each-grapheme-cluster' );
+*
+* function log( value, index ) {
+* console.log( '%d: %s', index, value );
+* }
+*
+* forEach( 'Hello', log );
+*/
+
+// MODULES //
+
+var main = require( './main.js' );
+
+
+// EXPORTS //
+
+module.exports = main;
diff --git a/lib/node_modules/@stdlib/string/base/for-each-grapheme-cluster/lib/main.js b/lib/node_modules/@stdlib/string/base/for-each-grapheme-cluster/lib/main.js
new file mode 100644
index 00000000000..080eac2a5de
--- /dev/null
+++ b/lib/node_modules/@stdlib/string/base/for-each-grapheme-cluster/lib/main.js
@@ -0,0 +1,64 @@
+/**
+* @license Apache-2.0
+*
+* Copyright (c) 2023 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 nextGraphemeClusterBreak = require( '@stdlib/string/next-grapheme-cluster-break' );
+
+
+// MAIN //
+
+/**
+* Invokes a function for each grapheme cluster (i.e., user-perceived character) in a string.
+*
+* @param {string} str - input string
+* @param {Function} clbk - function to invoke
+* @param {*} [thisArg] - execution context
+* @returns {string} input string
+*
+* @example
+* function log( value, index ) {
+* console.log( '%d: %s', index, value );
+* }
+*
+* forEach( 'Hello', log );
+*/
+function forEach( str, clbk, thisArg ) {
+ var len;
+ var idx;
+ var brk;
+
+ len = str.length;
+ idx = 0;
+ while ( idx < len ) {
+ brk = nextGraphemeClusterBreak( str, idx );
+ if ( brk === -1 ) {
+ brk = len;
+ }
+ clbk.call( thisArg, str.substring( idx, brk ), idx, str );
+ idx = brk;
+ }
+ return str;
+}
+
+
+// EXPORTS //
+
+module.exports = forEach;
diff --git a/lib/node_modules/@stdlib/string/base/for-each-grapheme-cluster/package.json b/lib/node_modules/@stdlib/string/base/for-each-grapheme-cluster/package.json
new file mode 100644
index 00000000000..60cb2ec1ffa
--- /dev/null
+++ b/lib/node_modules/@stdlib/string/base/for-each-grapheme-cluster/package.json
@@ -0,0 +1,69 @@
+{
+ "name": "@stdlib/string/base/for-each-grapheme-cluster",
+ "version": "0.0.0",
+ "description": "Invoke a function for each grapheme cluster (i.e., user-perceived character) in a string.",
+ "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",
+ "stdutils",
+ "stdutil",
+ "utilities",
+ "utility",
+ "utils",
+ "util",
+ "for",
+ "each",
+ "foreach",
+ "iterate",
+ "stdstring",
+ "string",
+ "str",
+ "grapheme",
+ "unicode"
+ ]
+}
diff --git a/lib/node_modules/@stdlib/string/base/for-each-grapheme-cluster/test/test.js b/lib/node_modules/@stdlib/string/base/for-each-grapheme-cluster/test/test.js
new file mode 100644
index 00000000000..b5b543783e9
--- /dev/null
+++ b/lib/node_modules/@stdlib/string/base/for-each-grapheme-cluster/test/test.js
@@ -0,0 +1,164 @@
+/**
+* @license Apache-2.0
+*
+* Copyright (c) 2023 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 noop = require( '@stdlib/utils/noop' );
+var forEach = require( './../lib' );
+
+
+// TESTS //
+
+tape( 'main export is a function', function test( t ) {
+ t.ok( true, __filename );
+ t.strictEqual( typeof forEach, 'function', 'main export is a function' );
+ t.end();
+});
+
+tape( 'if provided an empty string, the function never invokes a provided function', function test( t ) {
+ var out = forEach( '', fcn );
+ t.strictEqual( out, '', 'returns expected value' );
+ t.end();
+
+ function fcn() {
+ t.fail( 'should not be invoked' );
+ }
+});
+
+tape( 'the function returns a provided string', function test( t ) {
+ var str;
+ var out;
+
+ str = 'Hello, world';
+
+ out = forEach( str, noop );
+ t.strictEqual( out, str, 'returns expected value' );
+
+ t.end();
+});
+
+tape( 'the function invokes a provided function for each grapheme cluster of a provided string', function test( t ) {
+ var expected;
+ var actual;
+ var str;
+
+ str = 'Hello, world';
+ expected = [
+ 'H',
+ 'e',
+ 'l',
+ 'l',
+ 'o',
+ ',',
+ ' ',
+ 'w',
+ 'o',
+ 'r',
+ 'l',
+ 'd'
+ ];
+
+ actual = [];
+ forEach( str, copy );
+
+ t.deepEqual( actual, expected, 'returns expected value' );
+ t.end();
+
+ function copy( value ) {
+ actual.push( value );
+ }
+});
+
+tape( 'the function invokes a provided function for each grapheme cluster of the string (Unicode)', function test( t ) {
+ var expected;
+ var actual;
+ var str;
+
+ str = 'Hello, world \uD834\uDD1E';
+ expected = [
+ 'H',
+ 'e',
+ 'l',
+ 'l',
+ 'o',
+ ',',
+ ' ',
+ 'w',
+ 'o',
+ 'r',
+ 'l',
+ 'd',
+ ' ',
+ '\uD834\uDD1E'
+ ];
+
+ actual = [];
+ forEach( str, copy );
+
+ t.deepEqual( actual, expected, 'returns expected value' );
+ t.end();
+
+ function copy( value ) {
+ actual.push( value );
+ }
+});
+
+tape( 'the function invokes a provided function for each grapheme cluster of the string (emoji)', function test( t ) {
+ var expected;
+ var actual;
+ var str;
+
+ str = '🌷🍕👉🏿';
+ expected = [
+ '🌷',
+ '🍕',
+ '👉🏿'
+ ];
+
+ actual = [];
+ forEach( str, copy );
+
+ t.deepEqual( actual, expected, 'returns expected value' );
+ t.end();
+
+ function copy( value ) {
+ actual.push( value );
+ }
+});
+
+tape( 'the function supports providing an execution context', function test( t ) {
+ var ctx;
+ var str;
+
+ str = 'Hello, world';
+ ctx = {
+ 'count': 0
+ };
+
+ forEach( str, count, ctx );
+
+ t.strictEqual( ctx.count, str.length, 'returns expected value' );
+ t.end();
+
+ function count() {
+ this.count += 1; // eslint-disable-line no-invalid-this
+ }
+});