feat: add string/base/truncate-middle

PR-URL: 	#1118
Co-authored-by: Athan Reines <[email protected]>
Reviewed-by: Athan Reines <[email protected]>
Ref: #1062

lib/node_modules/@stdlib/string/base/truncate-middle/README.md

@@ -0,0 +1,92 @@
+<!--
+
+@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.
+
+-->
+
+# truncateMiddle
+
+> Truncate the middle UTF-16 code units of a string to return a string having a specified length.
+
+<section class="usage">
+
+## 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'
+```
+
+</section>
+
+<!-- /.usage -->
+
+<section class="examples">
+
+## Examples
+
+<!-- eslint no-undef: "error" -->
+
+```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.'
+```
+
+</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/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();
+});

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
+    --------

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;

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
+}

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.'

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;