diff --git a/lib/node_modules/@stdlib/string/base/truncate-middle/README.md b/lib/node_modules/@stdlib/string/base/truncate-middle/README.md
new file mode 100644
index 00000000000..3f50acde855
--- /dev/null
+++ b/lib/node_modules/@stdlib/string/base/truncate-middle/README.md
@@ -0,0 +1,92 @@
+
+
+# truncateMiddle
+
+> Truncate the middle UTF-16 code units of a string to return a string having a specified length.
+
+
+
+## Usage
+
+```javascript
+var truncateMiddle = require( '@stdlib/string/base/truncate-middle' );
+```
+
+#### truncateMiddle( str, len, seq )
+
+Truncates the middle UTF-16 code units of a string to return a string having a specified length.
+
+```javascript
+var out = truncateMiddle( 'beep boop', 7, '...' );
+// returns 'be...op'
+
+out = truncateMiddle( 'beep boop', 7, '!' );
+// returns 'bee!oop'
+
+out = truncateMiddle( 'beep boop', 7, '!!!' );
+// returns 'be!!!op'
+```
+
+
+
+
+
+
+
+## Examples
+
+
+
+```javascript
+var truncateMiddle = require( '@stdlib/string/base/truncate-middle' );
+
+var str = 'Lorem ipsum dolor sit amet, consectetur adipiscing elit.';
+var out = truncateMiddle( str, 15, '...' );
+// returns 'Lorem ... elit.'
+
+str = 'To be or not to be, that is the question';
+out = truncateMiddle( str, 19, '|' );
+// returns 'To be or | question'
+
+str = 'The quick fox jumps over the lazy dog.';
+out = truncateMiddle( str, 28, '...' );
+// returns 'The quick fox...he lazy dog.'
+```
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
diff --git a/lib/node_modules/@stdlib/string/base/truncate-middle/benchmark/benchmark.js b/lib/node_modules/@stdlib/string/base/truncate-middle/benchmark/benchmark.js
new file mode 100644
index 00000000000..6da36d6bd77
--- /dev/null
+++ b/lib/node_modules/@stdlib/string/base/truncate-middle/benchmark/benchmark.js
@@ -0,0 +1,56 @@
+/**
+* @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 truncateMiddle = require( './../lib' );
+
+
+// MAIN //
+
+bench( pkg, function benchmark( b ) {
+ var values;
+ var out;
+ var i;
+
+ values = [
+ 'beep boop',
+ 'foo bar',
+ 'xyz abc',
+ '🐶🐮🐷🐰🐸'
+ ];
+
+ b.tic();
+ for ( i = 0; i < b.iterations; i++ ) {
+ out = truncateMiddle( values[ i%values.length ], 7, '...' );
+ 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();
+});
diff --git a/lib/node_modules/@stdlib/string/base/truncate-middle/docs/repl.txt b/lib/node_modules/@stdlib/string/base/truncate-middle/docs/repl.txt
new file mode 100644
index 00000000000..39ca0eb420c
--- /dev/null
+++ b/lib/node_modules/@stdlib/string/base/truncate-middle/docs/repl.txt
@@ -0,0 +1,31 @@
+
+{{alias}}( str, len, seq )
+ Truncates the middle UTF-16 code units of a string to return a string
+ having a specified length.
+
+ Parameters
+ ----------
+ str: string
+ Input string.
+
+ len: integer
+ Output string length.
+
+ seq: string
+ Custom replacement sequence.
+
+ Returns
+ -------
+ out: string
+ Truncated string.
+
+ Examples
+ --------
+ > var str = 'beep boop';
+ > var out = {{alias}}( str, 5, '...' )
+ 'b...p'
+ > out = {{alias}}( str, 5, '|' )
+ 'be|op'
+
+ See Also
+ --------
diff --git a/lib/node_modules/@stdlib/string/base/truncate-middle/docs/types/index.d.ts b/lib/node_modules/@stdlib/string/base/truncate-middle/docs/types/index.d.ts
new file mode 100644
index 00000000000..712847d96f1
--- /dev/null
+++ b/lib/node_modules/@stdlib/string/base/truncate-middle/docs/types/index.d.ts
@@ -0,0 +1,59 @@
+/*
+* @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: 4.1
+
+/**
+* Truncates the middle UTF-16 code units of a string to return a string having a specified length.
+*
+* @param str - input string
+* @param len - output string length (including sequence)
+* @param seq - custom replacement sequence
+* @returns truncated string
+*
+* @example
+* var str = 'beep boop';
+* var out = truncateMiddle( str, 5, '...' );
+* // returns 'b...p'
+*
+* @example
+* var str = 'beep boop';
+* var out = truncateMiddle( str, 5, '>>>' );
+* // returns 'b>>>p'
+*
+* @example
+* var str = 'beep boop';
+* var out = truncateMiddle( str, 10, '...' );
+* // returns 'beep boop'
+*
+* @example
+* var str = 'beep boop';
+* var out = truncateMiddle( str, 0, '...' );
+* // returns ''
+*
+* @example
+* var str = 'beep boop';
+* var out = truncateMiddle( str, 2, '...' );
+* // returns '..'
+*/
+declare function truncateMiddle( str: string, len: number, seq: string ): string;
+
+
+// EXPORTS //
+
+export = truncateMiddle;
diff --git a/lib/node_modules/@stdlib/string/base/truncate-middle/docs/types/test.ts b/lib/node_modules/@stdlib/string/base/truncate-middle/docs/types/test.ts
new file mode 100644
index 00000000000..f7c6020e702
--- /dev/null
+++ b/lib/node_modules/@stdlib/string/base/truncate-middle/docs/types/test.ts
@@ -0,0 +1,63 @@
+/*
+* @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 truncateMiddle = require( './index' );
+
+
+// TESTS //
+
+// The function returns a string...
+{
+ truncateMiddle( 'abcdefghi', 3, '...' ); // $ExpectType string
+}
+
+// The compiler throws an error if the function is not provided a string as its first argument...
+{
+ truncateMiddle( true, 6, '...' ); // $ExpectError
+ truncateMiddle( false, 6, '...' ); // $ExpectError
+ truncateMiddle( 3, 6, '...' ); // $ExpectError
+ truncateMiddle( [], 6, '...' ); // $ExpectError
+ truncateMiddle( {}, 6, '...' ); // $ExpectError
+ truncateMiddle( ( x: number ): number => x, 6, '...' ); // $ExpectError
+}
+
+// The compiler throws an error if the function is not provided a number as its second argument...
+{
+ truncateMiddle( 'abd', true, '...' ); // $ExpectError
+ truncateMiddle( 'abd', false, '...' ); // $ExpectError
+ truncateMiddle( 'abd', 'abc', '...' ); // $ExpectError
+ truncateMiddle( 'abd', [], '...' ); // $ExpectError
+ truncateMiddle( 'abd', {}, '...' ); // $ExpectError
+ truncateMiddle( 'abd', ( x: number ): number => x, '...' ); // $ExpectError
+}
+
+// The compiler throws an error if the function is not provided a string as its third argument...
+{
+ truncateMiddle( 'beep boop', 4, true ); // $ExpectError
+ truncateMiddle( 'beep boop', 4, false ); // $ExpectError
+ truncateMiddle( 'beep boop', 4, 123 ); // $ExpectError
+ truncateMiddle( 'beep boop', 4, [], 0 ); // $ExpectError
+ truncateMiddle( 'beep boop', 4, {}, 0 ); // $ExpectError
+ truncateMiddle( 'beep boop', 4, ( x: number ): number => x, 0 ); // $ExpectError
+}
+
+// The compiler throws an error if the function is provided an unsupported number of arguments...
+{
+ truncateMiddle(); // $ExpectError
+ truncateMiddle( 'abc', 4, '|', true ); // $ExpectError
+}
diff --git a/lib/node_modules/@stdlib/string/base/truncate-middle/examples/index.js b/lib/node_modules/@stdlib/string/base/truncate-middle/examples/index.js
new file mode 100644
index 00000000000..50d16125b27
--- /dev/null
+++ b/lib/node_modules/@stdlib/string/base/truncate-middle/examples/index.js
@@ -0,0 +1,36 @@
+/**
+* @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 truncateMiddle = require( './../lib' );
+
+var str = 'Lorem ipsum dolor sit amet, consectetur adipiscing elit.';
+var out = truncateMiddle( str, 15, '...' );
+console.log( out );
+// => 'Lorem ... elit.'
+
+str = 'To be or not to be, that is the question';
+out = truncateMiddle( str, 19, '|' );
+console.log( out );
+// => 'To be or | question'
+
+str = 'The quick fox jumps over the lazy dog.';
+out = truncateMiddle( str, 28, '...' );
+console.log( out );
+// => 'The quick fox...he lazy dog.'
diff --git a/lib/node_modules/@stdlib/string/base/truncate-middle/lib/index.js b/lib/node_modules/@stdlib/string/base/truncate-middle/lib/index.js
new file mode 100644
index 00000000000..4690cc0cb53
--- /dev/null
+++ b/lib/node_modules/@stdlib/string/base/truncate-middle/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';
+
+/**
+* Truncate the middle UTF-16 code units of a string to return a string having a specified length.
+*
+* @module @stdlib/string/base/truncate-middle
+*
+* @example
+* var truncateMiddle = require( '@stdlib/string/base/truncate-middle' );
+*
+* var out = truncateMiddle( 'beep boop', 7, '...' );
+* // returns 'be...op'
+*
+* out = truncateMiddle( 'beep boop', 7, '|' );
+* // returns 'bee|oop'
+*/
+
+// MODULES //
+
+var main = require( './main.js' );
+
+
+// EXPORTS //
+
+module.exports = main;
diff --git a/lib/node_modules/@stdlib/string/base/truncate-middle/lib/main.js b/lib/node_modules/@stdlib/string/base/truncate-middle/lib/main.js
new file mode 100644
index 00000000000..19525c71a34
--- /dev/null
+++ b/lib/node_modules/@stdlib/string/base/truncate-middle/lib/main.js
@@ -0,0 +1,89 @@
+/**
+* @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 isOdd = require( '@stdlib/math/base/assert/is-odd' );
+var round = require( '@stdlib/math/base/special/round' );
+
+
+// MAIN //
+
+/**
+* Truncates the middle UTF-16 code units of a string to return a string having a specified length.
+*
+* @param {string} str - input string
+* @param {integer} len - output string length (including sequence)
+* @param {string} seq - custom replacement sequence
+* @returns {string} truncated string
+*
+* @example
+* var str = 'beep boop';
+* var out = truncateMiddle( str, 5, '...' );
+* // returns 'b...p'
+*
+* @example
+* var str = 'beep boop';
+* var out = truncateMiddle( str, 5, '>>>' );
+* // returns 'b>>>p'
+*
+* @example
+* var str = 'beep boop';
+* var out = truncateMiddle( str, 10, '...' );
+* // returns 'beep boop'
+*
+* @example
+* var str = 'beep boop';
+* var out = truncateMiddle( str, 0, '...' );
+* // returns ''
+*
+* @example
+* var str = 'beep boop';
+* var out = truncateMiddle( str, 2, '...' );
+* // returns '..'
+*/
+function truncateMiddle( str, len, seq ) {
+ var finalLength;
+ var seqLength;
+ var strLength;
+ var seqStart;
+ var seqEnd;
+
+ seqLength = seq.length;
+ strLength = str.length;
+ if ( len > strLength ) {
+ return str;
+ }
+ finalLength = len - seqLength;
+ if ( finalLength < 0 ) {
+ return seq.slice( 0, len );
+ }
+
+ seqStart = round( finalLength / 2 );
+ seqEnd = ( isOdd( finalLength ) ) ? seqStart-1 : seqStart;
+ seqEnd = strLength - seqEnd;
+
+ return str.substring( 0, seqStart ) + seq + str.substring( seqEnd );
+}
+
+
+// EXPORTS //
+
+module.exports = truncateMiddle;
diff --git a/lib/node_modules/@stdlib/string/base/truncate-middle/package.json b/lib/node_modules/@stdlib/string/base/truncate-middle/package.json
new file mode 100644
index 00000000000..490b3e3a475
--- /dev/null
+++ b/lib/node_modules/@stdlib/string/base/truncate-middle/package.json
@@ -0,0 +1,68 @@
+{
+ "name": "@stdlib/string/base/truncate-middle",
+ "version": "0.0.0",
+ "description": "Truncate the middle UTF-16 code units of a string to return a string having a specified length.",
+ "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",
+ "stdstring",
+ "utilities",
+ "utility",
+ "utils",
+ "util",
+ "string",
+ "str",
+ "base",
+ "truncate",
+ "middle",
+ "character",
+ "char",
+ "codeunit",
+ "unicode"
+ ]
+}
diff --git a/lib/node_modules/@stdlib/string/base/truncate-middle/test/test.js b/lib/node_modules/@stdlib/string/base/truncate-middle/test/test.js
new file mode 100644
index 00000000000..0ba15ad10b5
--- /dev/null
+++ b/lib/node_modules/@stdlib/string/base/truncate-middle/test/test.js
@@ -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.
+*/
+
+'use strict';
+
+// MODULES //
+
+var tape = require( 'tape' );
+var truncateMiddle = require( './../lib' );
+
+
+// TESTS //
+
+tape( 'main export is a function', function test( t ) {
+ t.ok( true, __filename );
+ t.strictEqual( typeof truncateMiddle, 'function', 'main export is a function' );
+ t.end();
+});
+
+tape( 'the function truncates a string to the specified length', function test( t ) {
+ var expected;
+ var actual;
+ var str;
+ var len;
+
+ str = 'beep boop';
+ len = 5;
+ expected = 'b...p';
+ actual = truncateMiddle( str, len, '...' );
+ t.strictEqual( actual, expected, 'returns expected value' );
+
+ str = 'beep boop';
+ len = 10;
+ expected = 'beep boop';
+ actual = truncateMiddle( str, len, '...' );
+ t.strictEqual( actual, expected, 'returns expected value' );
+
+ str = 'beep boop';
+ len = 0;
+ expected = '';
+ actual = truncateMiddle( str, len, '...' );
+ t.strictEqual( actual, expected, 'returns expected value' );
+
+ str = 'beep boop';
+ len = 1;
+ expected = '.';
+ actual = truncateMiddle( str, len, '...' );
+ t.strictEqual( actual, expected, 'returns expected value' );
+
+ t.end();
+});
+
+tape( 'the function truncates a string to the specified length (custom replacement sequence)', function test( t ) {
+ var expected;
+ var actual;
+ var str;
+ var len;
+
+ str = 'beep boop';
+ len = 5;
+ expected = 'be|op';
+ actual = truncateMiddle( str, len, '|' );
+ t.strictEqual( actual, expected, 'returns expected value' );
+
+ str = 'beep boop';
+ len = 7;
+ expected = 'bee!oop';
+ actual = truncateMiddle( str, len, '!' );
+ t.strictEqual( actual, expected, 'returns expected value' );
+
+ str = 'beep boop';
+ len = 3;
+ expected = 'b!p';
+ actual = truncateMiddle( str, len, '!' );
+ t.strictEqual( actual, expected, 'returns expected value' );
+
+ t.end();
+});