diff --git a/lib/node_modules/@stdlib/string/next-code-point-index/README.md b/lib/node_modules/@stdlib/string/next-code-point-index/README.md
new file mode 100644
index 000000000000..970341192f4f
--- /dev/null
+++ b/lib/node_modules/@stdlib/string/next-code-point-index/README.md
@@ -0,0 +1,193 @@
+
+
+# nextCodePointIndex
+
+> Return the position of the next Unicode code point in a string after a specified position.
+
+
+
+
+
+
+
+
+
+
+
+## Usage
+
+```javascript
+var nextCodePointIndex = require( '@stdlib/string/next-code-point-index' );
+```
+
+#### nextCodePointIndex( string\[, fromIndex] )
+
+Returns the position of the next Unicode code point in a string after a specified position.
+
+```javascript
+var out = nextCodePointIndex( 'last man standing' );
+// returns 1
+```
+
+By default, the function searches for a Unicode code point starting from the first index. To specify an alternative starting search index, provide a `fromIndex` argument.
+
+```javascript
+var out = nextCodePointIndex( 'last man standing', 4 );
+// returns 5
+```
+
+
+
+
+
+
+
+
+
+## Notes
+
+- If `string` is an empty string, the function returns `-1` irrespective of `fromIndex`.
+- If a code point does not exist after `fromIndex`, the function returns `-1`.
+- Note that `fromIndex` does **not** refer to a visual character position, but to an index in the ordered sequence of [UTF-16][utf-16] code units.
+
+
+
+
+
+
+
+
+
+## Examples
+
+
+
+```javascript
+var nextCodePointIndex = require( '@stdlib/string/next-code-point-index' );
+
+var out = nextCodePointIndex( 'last man standing', 4 );
+// returns 5
+
+out = nextCodePointIndex( 'presidential election', 8 );
+// returns 9
+
+out = nextCodePointIndex( '𐒻𐓟𐒻𐓟', 0 );
+// returns 2
+
+out = nextCodePointIndex( '🌷', 0 );
+// returns -1
+```
+
+
+
+
+
+
+
+* * *
+
+
+
+## CLI
+
+
+
+
+
+### Usage
+
+```text
+Usage: next-code-point-index [options] []
+
+Options:
+
+ -h, --help Print this message.
+ -V, --version Print the package version.
+ --from index Starting search position in string. Default: 0.
+```
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+### Examples
+
+```bash
+$ next-code-point-index --from=0 𐒻𐓟𐒻𐓟
+2
+```
+
+To use as a [standard stream][standard-streams],
+
+```bash
+$ echo -n '𐒻𐓟𐒻𐓟' | next-code-point-index --from=0
+2
+```
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+[standard-streams]: https://en.wikipedia.org/wiki/Standard_streams
+
+[utf-16]: https://en.wikipedia.org/wiki/UTF-16
+
+
+
+
diff --git a/lib/node_modules/@stdlib/string/next-code-point-index/benchmark/benchmark.js b/lib/node_modules/@stdlib/string/next-code-point-index/benchmark/benchmark.js
new file mode 100644
index 000000000000..1eedf93a09db
--- /dev/null
+++ b/lib/node_modules/@stdlib/string/next-code-point-index/benchmark/benchmark.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 bench = require( '@stdlib/bench' );
+var isInteger = require( '@stdlib/assert/is-integer' ).isPrimitive;
+var pkg = require( './../package.json' ).name;
+var nextCodePointIndex = require( './../lib' );
+
+
+// MAIN //
+
+bench( pkg, function benchmark( b ) {
+ var strings;
+ var len;
+ var out;
+ var i;
+
+ strings = [
+ 'last man standing',
+ 'presidential election',
+ 'अनुच्छेद',
+ '🌷',
+ '书/六書',
+ 'เ❄︎நி',
+ 'กิิก้้ก็็ก็็กิิก้้ก็็กิิก้้กิิก้้ก็็ก็็กิิก้้ก็็กิิก้้',
+ '書六/书六',
+ 'ܶƔλʃݖͱšɕ҆ʧѸؐҜҦɳΏ',
+ 'âݝΝҳӌݾҀƳ۵ۧǁǸΓ'
+ ];
+ len = strings.length;
+
+ b.tic();
+ for ( i = 0; i < b.iterations; i++ ) {
+ out = nextCodePointIndex( strings[ i%len ], 1 );
+ if ( out !== out ) {
+ b.fail( 'should not return NaN' );
+ }
+ }
+ b.toc();
+ if ( !isInteger( out ) ) {
+ b.fail( 'should return an integer' );
+ }
+ b.pass( 'benchmark finished' );
+ b.end();
+});
diff --git a/lib/node_modules/@stdlib/string/next-code-point-index/bin/cli b/lib/node_modules/@stdlib/string/next-code-point-index/bin/cli
new file mode 100755
index 000000000000..dcc36981b8d1
--- /dev/null
+++ b/lib/node_modules/@stdlib/string/next-code-point-index/bin/cli
@@ -0,0 +1,91 @@
+#!/usr/bin/env node
+
+/**
+* @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 resolve = require( 'path' ).resolve;
+var readFileSync = require( '@stdlib/fs/read-file' ).sync;
+var CLI = require( '@stdlib/cli/ctor' );
+var stdin = require( '@stdlib/process/read-stdin' );
+var stdinStream = require( '@stdlib/streams/node/stdin' );
+var nextCodePointIndex = require( './../lib' );
+
+
+// MAIN //
+
+/**
+* Main execution sequence.
+*
+* @private
+* @returns {void}
+*/
+function main() {
+ var flags;
+ var args;
+ var cli;
+ var pos;
+
+ // Create a command-line interface:
+ cli = new CLI({
+ 'pkg': require( './../package.json' ),
+ 'options': require( './../etc/cli_opts.json' ),
+ 'help': readFileSync( resolve( __dirname, '..', 'docs', 'usage.txt' ), {
+ 'encoding': 'utf8'
+ })
+ });
+
+ // Get any provided command-line options:
+ flags = cli.flags();
+ if ( flags.help || flags.version ) {
+ return;
+ }
+ if ( flags.from ) {
+ pos = parseInt( flags.from, 10 );
+ } else {
+ pos = 0;
+ }
+ // Get any provided command-line arguments:
+ args = cli.args();
+
+ // Check if we are receiving data from `stdin`...
+ if ( stdinStream.isTTY ) {
+ return console.log( nextCodePointIndex( args[ 0 ], pos ) ); // eslint-disable-line no-console
+ }
+ return stdin( onRead );
+
+ /**
+ * Callback invoked upon reading from `stdin`.
+ *
+ * @private
+ * @param {(Error|null)} error - error object
+ * @param {Buffer} data - data
+ * @returns {void}
+ */
+ function onRead( error, data ) {
+ if ( error ) {
+ return cli.error( error );
+ }
+ console.log( nextCodePointIndex( data.toString(), pos ) ); // eslint-disable-line no-console
+ }
+}
+
+main();
diff --git a/lib/node_modules/@stdlib/string/next-code-point-index/docs/repl.txt b/lib/node_modules/@stdlib/string/next-code-point-index/docs/repl.txt
new file mode 100644
index 000000000000..15203eb6068a
--- /dev/null
+++ b/lib/node_modules/@stdlib/string/next-code-point-index/docs/repl.txt
@@ -0,0 +1,31 @@
+
+{{alias}}( str[, fromIndex] )
+ Returns the position of the next Unicode code point in a string after a
+ specified position.
+
+ Parameters
+ ----------
+ str: string
+ Input string.
+
+ fromIndex: integer (optional)
+ Position. Default: 0.
+
+ Returns
+ -------
+ out: integer
+ Next code point position.
+
+ Examples
+ --------
+ > var out = {{alias}}( 'last man standing', 4 )
+ 5
+ > out = {{alias}}( 'presidential election', 8 )
+ 9
+ > out = {{alias}}( '𐒻𐓟𐒻𐓟', 0 )
+ 2
+ > out = {{alias}}( '🌷' )
+ -1
+
+ See Also
+ --------
diff --git a/lib/node_modules/@stdlib/string/next-code-point-index/docs/types/index.d.ts b/lib/node_modules/@stdlib/string/next-code-point-index/docs/types/index.d.ts
new file mode 100644
index 000000000000..986bcf2539d0
--- /dev/null
+++ b/lib/node_modules/@stdlib/string/next-code-point-index/docs/types/index.d.ts
@@ -0,0 +1,42 @@
+/*
+* @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
+
+/**
+* Returns the position of the next Unicode code point in a string after a specified position.
+*
+* @param str - input string
+* @param fromIndex - position (default: 0)
+* @throws first argument must be a string
+* @throws second argument must be an integer
+* @returns next code point position
+*
+* @example
+* var out = nextCodePointIndex( '𐒻𐓟𐒻𐓟', 0 );
+* // returns 2
+*
+* out = nextCodePointIndex( '🌷' );
+* // returns -1
+*/
+declare function nextCodePointIndex( str: string, fromIndex?: number ): number;
+
+
+// EXPORTS //
+
+export = nextCodePointIndex;
diff --git a/lib/node_modules/@stdlib/string/next-code-point-index/docs/types/test.ts b/lib/node_modules/@stdlib/string/next-code-point-index/docs/types/test.ts
new file mode 100644
index 000000000000..cf9a41076e9d
--- /dev/null
+++ b/lib/node_modules/@stdlib/string/next-code-point-index/docs/types/test.ts
@@ -0,0 +1,47 @@
+/*
+* @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 nextCodePointIndex = require( './index' );
+
+
+// TESTS //
+
+// The function returns a number...
+{
+ nextCodePointIndex( 'last man standing', 4 ); // $ExpectType number
+ nextCodePointIndex( 'presidential election', 8 ); // $ExpectType number
+ nextCodePointIndex( 'अनुच्छेद', 1 ); // $ExpectType number
+ nextCodePointIndex( '🌷', 0 ); // $ExpectType number
+}
+
+// The compiler throws an error if the function is provided invalid arguments...
+{
+ nextCodePointIndex( false, 3 ); // $ExpectError
+ nextCodePointIndex( {}, 3 ); // $ExpectError
+ nextCodePointIndex( ( x: number ): number => x, 3 ); // $ExpectError
+
+ nextCodePointIndex( 'string', true ); // $ExpectError
+ nextCodePointIndex( 'string', false ); // $ExpectError
+ nextCodePointIndex( 'string', {} ); // $ExpectError
+ nextCodePointIndex( 'string', ( x: number ): number => x ); // $ExpectError
+}
+
+// The compiler throws an error if the function is provided insufficient arguments...
+{
+ nextCodePointIndex(); // $ExpectError
+}
diff --git a/lib/node_modules/@stdlib/string/next-code-point-index/docs/usage.txt b/lib/node_modules/@stdlib/string/next-code-point-index/docs/usage.txt
new file mode 100644
index 000000000000..63c838c6e2a3
--- /dev/null
+++ b/lib/node_modules/@stdlib/string/next-code-point-index/docs/usage.txt
@@ -0,0 +1,8 @@
+
+Usage: next-code-point-index [options] []
+
+Options:
+
+ -h, --help Print this message.
+ -V, --version Print the package version.
+ --from index Starting search position in string. Default: 0.
diff --git a/lib/node_modules/@stdlib/string/next-code-point-index/etc/cli_opts.json b/lib/node_modules/@stdlib/string/next-code-point-index/etc/cli_opts.json
new file mode 100644
index 000000000000..8a766dc0ecdb
--- /dev/null
+++ b/lib/node_modules/@stdlib/string/next-code-point-index/etc/cli_opts.json
@@ -0,0 +1,17 @@
+{
+ "string": [
+ "from"
+ ],
+ "boolean": [
+ "help",
+ "version"
+ ],
+ "alias": {
+ "help": [
+ "h"
+ ],
+ "version": [
+ "V"
+ ]
+ }
+}
diff --git a/lib/node_modules/@stdlib/string/next-code-point-index/examples/index.js b/lib/node_modules/@stdlib/string/next-code-point-index/examples/index.js
new file mode 100644
index 000000000000..a034f6f7b746
--- /dev/null
+++ b/lib/node_modules/@stdlib/string/next-code-point-index/examples/index.js
@@ -0,0 +1,33 @@
+/**
+* @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 nextCodePointIndex = require( './../lib' );
+
+console.log( nextCodePointIndex( 'last man standing', 4 ) );
+// => 5
+
+console.log( nextCodePointIndex( 'presidential election', 8 ) );
+// => 9
+
+console.log( nextCodePointIndex( '𐒻𐓟𐒻𐓟', 0 ) );
+// => 2
+
+console.log( nextCodePointIndex( '🌷', 0 ) );
+// => -1
diff --git a/lib/node_modules/@stdlib/string/next-code-point-index/lib/index.js b/lib/node_modules/@stdlib/string/next-code-point-index/lib/index.js
new file mode 100644
index 000000000000..716736f8ac9c
--- /dev/null
+++ b/lib/node_modules/@stdlib/string/next-code-point-index/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';
+
+/**
+* Return the position of the next Unicode code point in a string after a specified position.
+*
+* @module @stdlib/string/next-code-point-index
+*
+* @example
+* var nextCodePointIndex = require( '@stdlib/string/next-code-point-index' );
+*
+* var out = nextCodePointIndex( '𐒻𐓟𐒻𐓟', 0 );
+* // returns 2
+*
+* out = nextCodePointIndex( '🌷', 0 );
+* // returns -1
+*/
+
+// MODULES //
+
+var main = require( './main.js' );
+
+
+// EXPORTS //
+
+module.exports = main;
diff --git a/lib/node_modules/@stdlib/string/next-code-point-index/lib/main.js b/lib/node_modules/@stdlib/string/next-code-point-index/lib/main.js
new file mode 100644
index 000000000000..d0ffffc10860
--- /dev/null
+++ b/lib/node_modules/@stdlib/string/next-code-point-index/lib/main.js
@@ -0,0 +1,108 @@
+/**
+* @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 isString = require( '@stdlib/assert/is-string' ).isPrimitive;
+var isInteger = require( '@stdlib/assert/is-integer' ).isPrimitive;
+var format = require( '@stdlib/string/format' );
+
+
+// VARIABLES //
+
+var RE_UTF16_LOW_SURROGATE = /[\uDC00-\uDFFF]/; // TODO: replace with stdlib pkg
+var RE_UTF16_HIGH_SURROGATE = /[\uD800-\uDBFF]/; // TODO: replace with stdlib pkg
+
+
+// MAIN //
+
+/**
+* Returns the position of the next Unicode code point in a string after a specified position.
+*
+* @param {string} str - input string
+* @param {integer} [fromIndex=0] - position
+* @throws {TypeError} first argument must be a string
+* @throws {TypeError} second argument must be an integer
+* @returns {integer} position of the next Unicode code point
+*
+* @example
+* var out = nextCodePointIndex( 'last man standing', 4 );
+* // returns 5
+*
+* @example
+* var out = nextCodePointIndex( 'presidential election', 8 );
+* // returns 9
+*
+* @example
+* var out = nextCodePointIndex( '𐒻𐓟𐒻𐓟', 0 );
+* // returns 2
+*
+* @example
+* var out = nextCodePointIndex( '🌷' );
+* // returns -1
+*/
+function nextCodePointIndex( str, fromIndex ) {
+ var lastIndex;
+ var len;
+ var idx;
+ var i;
+ var j;
+
+ if ( !isString( str ) ) {
+ throw new TypeError( format( 'invalid argument. First argument must be a string. Value: `%s`.', str ) );
+ }
+ if ( arguments.length > 1 ) {
+ if ( !isInteger( fromIndex ) ) {
+ throw new TypeError( format( 'invalid argument. Second argument must be an integer. Value: `%s`.', fromIndex ) );
+ }
+ idx = fromIndex;
+ } else {
+ idx = 0;
+ }
+ len = str.length;
+ if ( idx < 0 ) {
+ idx += len;
+ if ( idx < 0 ) {
+ idx = 0;
+ }
+ }
+ lastIndex = len - 1;
+ if ( idx >= lastIndex ) {
+ return -1;
+ }
+
+ // Check for a high UTF-16 surrogate...
+ i = idx + 1;
+ j = i + 1;
+ if ( RE_UTF16_HIGH_SURROGATE.test( str[ idx ] ) ) {
+ // Check whether the high surrogate is paired with a low surrogate...
+ if ( RE_UTF16_LOW_SURROGATE.test( str[ i ] ) ) {
+ // We found a surrogate pair:
+ return ( j >= lastIndex ) ? -1 : j;
+ }
+ return i;
+ }
+ return i;
+}
+
+
+// EXPORTS //
+
+module.exports = nextCodePointIndex;
diff --git a/lib/node_modules/@stdlib/string/next-code-point-index/package.json b/lib/node_modules/@stdlib/string/next-code-point-index/package.json
new file mode 100644
index 000000000000..baa059e922b3
--- /dev/null
+++ b/lib/node_modules/@stdlib/string/next-code-point-index/package.json
@@ -0,0 +1,74 @@
+{
+ "name": "@stdlib/string/next-code-point-index",
+ "version": "0.0.0",
+ "description": "Return the position of the next Unicode code point in a string after a specified position.",
+ "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"
+ }
+ ],
+ "bin": {
+ "next-code-point-index": "./bin/cli"
+ },
+ "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",
+ "string",
+ "str",
+ "utilities",
+ "utility",
+ "utils",
+ "util",
+ "code",
+ "point",
+ "pt",
+ "unicode",
+ "utf-16",
+ "utf16",
+ "surrogate",
+ "astral",
+ "segmentation",
+ "tc39"
+ ]
+}
diff --git a/lib/node_modules/@stdlib/string/next-code-point-index/test/fixtures/stdin_error.js.txt b/lib/node_modules/@stdlib/string/next-code-point-index/test/fixtures/stdin_error.js.txt
new file mode 100644
index 000000000000..b42c70b3b554
--- /dev/null
+++ b/lib/node_modules/@stdlib/string/next-code-point-index/test/fixtures/stdin_error.js.txt
@@ -0,0 +1,33 @@
+/**
+* @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.
+*/
+
+var proc = require( 'process' );
+var resolve = require( 'path' ).resolve;
+var proxyquire = require( 'proxyquire' );
+
+var fpath = resolve( __dirname, '..', 'bin', 'cli' );
+
+proc.stdin.isTTY = false;
+
+proxyquire( fpath, {
+ '@stdlib/process/read-stdin': stdin
+});
+
+function stdin( clbk ) {
+ clbk( new Error( 'beep' ) );
+}
diff --git a/lib/node_modules/@stdlib/string/next-code-point-index/test/test.cli.js b/lib/node_modules/@stdlib/string/next-code-point-index/test/test.cli.js
new file mode 100644
index 000000000000..964a7a258e7a
--- /dev/null
+++ b/lib/node_modules/@stdlib/string/next-code-point-index/test/test.cli.js
@@ -0,0 +1,260 @@
+/**
+* @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 resolve = require( 'path' ).resolve;
+var exec = require( 'child_process' ).exec;
+var tape = require( 'tape' );
+var IS_BROWSER = require( '@stdlib/assert/is-browser' );
+var IS_WINDOWS = require( '@stdlib/assert/is-windows' );
+var replace = require( '@stdlib/string/replace' );
+var readFileSync = require( '@stdlib/fs/read-file' ).sync;
+var EXEC_PATH = require( '@stdlib/process/exec-path' );
+
+
+// VARIABLES //
+
+var fpath = resolve( __dirname, '..', 'bin', 'cli' );
+var opts = {
+ 'skip': IS_BROWSER || IS_WINDOWS
+};
+
+
+// FIXTURES //
+
+var PKG_VERSION = require( './../package.json' ).version;
+
+
+// TESTS //
+
+tape( 'command-line interface', function test( t ) {
+ t.ok( true, __filename );
+ t.end();
+});
+
+tape( 'when invoked with a `--help` flag, the command-line interface prints the help text to `stderr`', opts, function test( t ) {
+ var expected;
+ var cmd;
+
+ expected = readFileSync( resolve( __dirname, '..', 'docs', 'usage.txt' ), {
+ 'encoding': 'utf8'
+ });
+ cmd = [
+ EXEC_PATH,
+ fpath,
+ '--help'
+ ];
+
+ exec( cmd.join( ' ' ), done );
+
+ function done( error, stdout, stderr ) {
+ if ( error ) {
+ t.fail( error.message );
+ } else {
+ t.strictEqual( stdout.toString(), '', 'does not print to `stdout`' );
+ t.strictEqual( stderr.toString(), expected+'\n', 'expected value' );
+ }
+ t.end();
+ }
+});
+
+tape( 'when invoked with a `-h` flag, the command-line interface prints the help text to `stderr`', opts, function test( t ) {
+ var expected;
+ var cmd;
+
+ expected = readFileSync( resolve( __dirname, '..', 'docs', 'usage.txt' ), {
+ 'encoding': 'utf8'
+ });
+ cmd = [
+ EXEC_PATH,
+ fpath,
+ '-h'
+ ];
+
+ exec( cmd.join( ' ' ), done );
+
+ function done( error, stdout, stderr ) {
+ if ( error ) {
+ t.fail( error.message );
+ } else {
+ t.strictEqual( stdout.toString(), '', 'does not print to `stdout`' );
+ t.strictEqual( stderr.toString(), expected+'\n', 'expected value' );
+ }
+ t.end();
+ }
+});
+
+tape( 'when invoked with a `--version` flag, the command-line interface prints the version to `stderr`', opts, function test( t ) {
+ var cmd = [
+ EXEC_PATH,
+ fpath,
+ '--version'
+ ];
+
+ exec( cmd.join( ' ' ), done );
+
+ function done( error, stdout, stderr ) {
+ if ( error ) {
+ t.fail( error.message );
+ } else {
+ t.strictEqual( stdout.toString(), '', 'does not print to `stdout`' );
+ t.strictEqual( stderr.toString(), PKG_VERSION+'\n', 'expected value' );
+ }
+ t.end();
+ }
+});
+
+tape( 'when invoked with a `-V` flag, the command-line interface prints the version to `stderr`', opts, function test( t ) {
+ var cmd = [
+ EXEC_PATH,
+ fpath,
+ '-V'
+ ];
+
+ exec( cmd.join( ' ' ), done );
+
+ function done( error, stdout, stderr ) {
+ if ( error ) {
+ t.fail( error.message );
+ } else {
+ t.strictEqual( stdout.toString(), '', 'does not print to `stdout`' );
+ t.strictEqual( stderr.toString(), PKG_VERSION+'\n', 'expected value' );
+ }
+ t.end();
+ }
+});
+
+tape( 'the command-line interface returns the next code point break position in a string', opts, function test( t ) {
+ var cmd = [
+ EXEC_PATH,
+ '-e',
+ '"process.stdin.isTTY = true; process.argv[ 2 ] = \'--from=1\'; process.argv[ 3 ] = \'अनुच्छेद\'; require( \''+fpath+'\' );"'
+ ];
+
+ exec( cmd.join( ' ' ), done );
+
+ function done( error, stdout, stderr ) {
+ if ( error ) {
+ t.fail( error.message );
+ } else {
+ t.strictEqual( stdout.toString(), '2\n', 'expected value' );
+ t.strictEqual( stderr.toString(), '', 'does not print to `stderr`' );
+ }
+ t.end();
+ }
+});
+
+tape( 'the command-line interface supports negative integers when specifying a starting search index', opts, function test( t ) {
+ var cmd = [
+ EXEC_PATH,
+ '-e',
+ '"process.stdin.isTTY = true; process.argv[ 2 ] = \'--from=-7\'; process.argv[ 3 ] = \'अनुच्छेद\'; require( \''+fpath+'\' );"'
+ ];
+
+ exec( cmd.join( ' ' ), done );
+
+ function done( error, stdout, stderr ) {
+ if ( error ) {
+ t.fail( error.message );
+ } else {
+ t.strictEqual( stdout.toString(), '2\n', 'expected value' );
+ t.strictEqual( stderr.toString(), '', 'does not print to `stderr`' );
+ }
+ t.end();
+ }
+});
+
+tape( 'the command-line interface uses a default starting search index of `0`', opts, function test( t ) {
+ var cmd = [
+ EXEC_PATH,
+ '-e',
+ '"process.stdin.isTTY = true; process.argv[ 2 ] = \'नुच्छेद\'; require( \''+fpath+'\' );"'
+ ];
+
+ exec( cmd.join( ' ' ), done );
+
+ function done( error, stdout, stderr ) {
+ if ( error ) {
+ t.fail( error.message );
+ } else {
+ t.strictEqual( stdout.toString(), '1\n', 'expected value' );
+ t.strictEqual( stderr.toString(), '', 'does not print to `stderr`' );
+ }
+ t.end();
+ }
+});
+
+tape( 'the command-line interface supports use as a standard stream', opts, function test( t ) {
+ var cmd = [
+ 'printf \'अनुच्छेद\'',
+ '|',
+ EXEC_PATH,
+ fpath,
+ '--from=1'
+ ];
+
+ exec( cmd.join( ' ' ), done );
+
+ function done( error, stdout, stderr ) {
+ if ( error ) {
+ t.fail( error.message );
+ } else {
+ t.strictEqual( stdout.toString(), '2\n', 'expected value' );
+ t.strictEqual( stderr.toString(), '', 'does not print to `stderr`' );
+ }
+ t.end();
+ }
+});
+
+tape( 'when used as a standard stream, if an error is encountered when reading from `stdin`, the command-line interface prints an error and sets a non-zero exit code', opts, function test( t ) {
+ var script;
+ var opts;
+ var cmd;
+
+ script = readFileSync( resolve( __dirname, 'fixtures', 'stdin_error.js.txt' ), {
+ 'encoding': 'utf8'
+ });
+
+ // Replace single quotes with double quotes:
+ script = replace( script, '\'', '"' );
+
+ cmd = [
+ EXEC_PATH,
+ '-e',
+ '\''+script+'\''
+ ];
+
+ opts = {
+ 'cwd': __dirname
+ };
+
+ exec( cmd.join( ' ' ), opts, done );
+
+ function done( error, stdout, stderr ) {
+ if ( error ) {
+ t.pass( error.message );
+ t.strictEqual( error.code, 1, 'expected exit code' );
+ }
+ t.strictEqual( stdout.toString(), '', 'does not print to `stdout`' );
+ t.strictEqual( stderr.toString(), 'Error: beep\n', 'expected value' );
+ t.end();
+ }
+});
diff --git a/lib/node_modules/@stdlib/string/next-code-point-index/test/test.js b/lib/node_modules/@stdlib/string/next-code-point-index/test/test.js
new file mode 100644
index 000000000000..7a95ca27c23a
--- /dev/null
+++ b/lib/node_modules/@stdlib/string/next-code-point-index/test/test.js
@@ -0,0 +1,242 @@
+/**
+* @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 nextCodePointIndex = require( './../lib' );
+
+
+// TESTS //
+
+tape( 'main export is a function', function test( t ) {
+ t.ok( true, __filename );
+ t.strictEqual( typeof nextCodePointIndex, 'function', 'main export is a function' );
+ t.end();
+});
+
+tape( 'the function throws an error if the first argument is not a string (one argument)', function test( t ) {
+ var values;
+ var i;
+
+ values = [
+ -5,
+ 3.14,
+ -1.0,
+ NaN,
+ true,
+ false,
+ null,
+ void 0,
+ [ 'beep', 'boop' ],
+ [ 1, 2, 3 ],
+ {},
+ function noop() {}
+ ];
+
+ for ( i = 0; i < values.length; i++ ) {
+ t.throws( badValue( values[i] ), TypeError, 'throws an error when provided '+values[i] );
+ }
+ t.end();
+
+ function badValue( value ) {
+ return function badValue() {
+ nextCodePointIndex( value );
+ };
+ }
+});
+
+tape( 'the function throws an error if the first argument is not a string (two arguments)', function test( t ) {
+ var values;
+ var i;
+
+ values = [
+ -5,
+ 3.14,
+ -1.0,
+ NaN,
+ true,
+ false,
+ null,
+ void 0,
+ [ 'beep', 'boop' ],
+ [ 1, 2, 3 ],
+ {},
+ function noop() {}
+ ];
+
+ for ( i = 0; i < values.length; i++ ) {
+ t.throws( badValue( values[i] ), TypeError, 'throws an error when provided '+values[i] );
+ }
+ t.end();
+
+ function badValue( value ) {
+ return function badValue() {
+ nextCodePointIndex( value, 0 );
+ };
+ }
+});
+
+tape( 'the function throws an error if the second argument is not an integer', function test( t ) {
+ var values;
+ var i;
+
+ values = [
+ 'bar',
+ 3.14,
+ NaN,
+ null,
+ void 0,
+ [ 'beep', 'boop' ],
+ [ 1, 2, 3 ],
+ {},
+ function noop() {}
+ ];
+ for ( i = 0; i < values.length; i++ ) {
+ t.throws( badValue( values[i] ), TypeError, 'throws an error when provided '+values[i] );
+ }
+ t.end();
+
+ function badValue( value ) {
+ return function badValue() {
+ nextCodePointIndex( 'foo', value );
+ };
+ }
+});
+
+tape( 'the function returns the next code point position in a provided string', function test( t ) {
+ var out;
+
+ out = nextCodePointIndex( 'last man standing' );
+ t.strictEqual( out, 1, 'returns expected value' );
+
+ out = nextCodePointIndex( 'presidential election' );
+ t.strictEqual( out, 1, 'returns expected value' );
+
+ out = nextCodePointIndex( 'नुच्छेद' );
+ t.strictEqual( out, 1, 'returns expected value' );
+
+ out = nextCodePointIndex( '\uD800' ); // unpaired ending high surrogate
+ t.strictEqual( out, -1, 'returns expected value' );
+
+ t.end();
+});
+
+tape( 'the function supports providing an index from which to begin searching', function test( t ) {
+ var out;
+
+ out = nextCodePointIndex( 'last man standing', 4 );
+ t.strictEqual( out, 5, 'returns expected value' );
+
+ out = nextCodePointIndex( 'presidential election', 8 );
+ t.strictEqual( out, 9, 'returns expected value' );
+
+ out = nextCodePointIndex( 'अनुच्छेद', 1 );
+ t.strictEqual( out, 2, 'returns expected value' );
+
+ out = nextCodePointIndex( '𐒻𐓟𐒻𐓟', 0 );
+ t.strictEqual( out, 2, 'returns expected value' );
+
+ out = nextCodePointIndex( 'a\uDBFFaaaaaaa', 0 ); // unpaired high surrogate
+ t.strictEqual( out, 1, 'returns expected value' );
+
+ out = nextCodePointIndex( 'a\uDBFF', 0 ); // unpaired ending high surrogate
+ t.strictEqual( out, 1, 'returns expected value' );
+
+ t.end();
+});
+
+tape( 'the function supports providing a negative integer for the starting search index', function test( t ) {
+ var out;
+
+ out = nextCodePointIndex( 'last man standing', -13 );
+ t.strictEqual( out, 5, 'returns expected value' );
+
+ out = nextCodePointIndex( 'presidential election', -13 );
+ t.strictEqual( out, 9, 'returns expected value' );
+
+ out = nextCodePointIndex( 'अनुच्छेद', -7 );
+ t.strictEqual( out, 2, 'returns expected value' );
+
+ t.end();
+});
+
+tape( 'the function returns `-1` if the starting search index is greater than or equal to the string length', function test( t ) {
+ var out;
+
+ out = nextCodePointIndex( 'last man standing', 17 );
+ t.strictEqual( out, -1, 'returns expected value' );
+
+ out = nextCodePointIndex( 'presidential election', 22 );
+ t.strictEqual( out, -1, 'returns expected value' );
+
+ out = nextCodePointIndex( 'अनुच्छेद', 10 );
+ t.strictEqual( out, -1, 'returns expected value' );
+
+ out = nextCodePointIndex( '🌷', 2 );
+ t.strictEqual( out, -1, 'returns expected value' );
+
+ t.end();
+});
+
+tape( 'the function returns `-1` if the starting search index resides within the last code point of the string', function test( t ) {
+ var out;
+
+ out = nextCodePointIndex( 'last man standing', 16 );
+ t.strictEqual( out, -1, 'returns expected value' );
+
+ out = nextCodePointIndex( 'presidential election', 20 );
+ t.strictEqual( out, -1, 'returns expected value' );
+
+ out = nextCodePointIndex( 'अनुच्छेद', 7 );
+ t.strictEqual( out, -1, 'returns expected value' );
+
+ out = nextCodePointIndex( '🌷', 1 );
+ t.strictEqual( out, -1, 'returns expected value' );
+
+ out = nextCodePointIndex( '🌷' );
+ t.strictEqual( out, -1, 'returns expected value' );
+
+ out = nextCodePointIndex( '六', 0 );
+ t.strictEqual( out, -1, 'returns expected value' );
+
+ out = nextCodePointIndex( '六' );
+ t.strictEqual( out, -1, 'returns expected value' );
+
+ t.end();
+});
+
+tape( 'the function returns `-1` if provided an empty string', function test( t ) {
+ var out;
+
+ out = nextCodePointIndex( '', -2 );
+ t.strictEqual( out, -1, 'returns expected value' );
+
+ out = nextCodePointIndex( '', 2 );
+ t.strictEqual( out, -1, 'returns expected value' );
+
+ out = nextCodePointIndex( '', 0 );
+ t.strictEqual( out, -1, 'returns expected value' );
+
+ out = nextCodePointIndex( '' );
+ t.strictEqual( out, -1, 'returns expected value' );
+
+ t.end();
+});