diff --git a/lib/node_modules/@stdlib/stats/array/max-by/README.md b/lib/node_modules/@stdlib/stats/array/max-by/README.md
new file mode 100644
index 000000000000..5969471869b7
--- /dev/null
+++ b/lib/node_modules/@stdlib/stats/array/max-by/README.md
@@ -0,0 +1,147 @@
+
+
+# maxBy
+
+> Calculate the maximum value of an array via a callback function.
+
+
+
+
+
+
+
+## Usage
+
+```javascript
+var maxBy = require( '@stdlib/stats/array/max-by' );
+```
+
+#### maxBy( x, clbk\[, thisArg] )
+
+Computes the maximum value of an array via a callback function.
+
+```javascript
+function accessor( v ) {
+ return v * 2.0;
+}
+
+var x = [ -2.0, 1.0, 3.0, -5.0, 4.0, 0.0, -1.0, -3.0 ];
+
+var v = maxBy( x, accessor );
+// returns 8.0
+```
+
+The function has the following parameters:
+
+- **x**: input array.
+- **clbk**: callback function.
+- **thisArg**: execution context (_optional_).
+
+The invoked callback is provided three arguments:
+
+- **value**: current array element.
+- **index**: current array index.
+- **array**: input array.
+
+To set the callback execution context, provide a `thisArg`.
+
+```javascript
+function accessor( v ) {
+ this.count += 1;
+ return v * 2.0;
+}
+
+var x = [ -2.0, 1.0, 3.0, -5.0, 4.0, 0.0, -1.0, -3.0 ];
+
+var context = {
+ 'count': 0
+};
+
+var v = maxBy( x, accessor, context );
+// returns 8.0
+
+var cnt = context.count;
+// returns 8
+```
+
+
+
+
+
+
+
+## Notes
+
+- If provided an empty array, the function returns `NaN`.
+- A provided callback function should return a numeric value.
+- If a provided callback function does not return any value (or equivalently, explicitly returns `undefined`), the value is **ignored**.
+- The function supports array-like objects having getter and setter accessors for array element access (e.g., [`@stdlib/array/base/accessor`][@stdlib/array/base/accessor]).
+
+
+
+
+
+
+
+## Examples
+
+
+
+```javascript
+var discreteUniform = require( '@stdlib/random/array/discrete-uniform' );
+var maxBy = require( '@stdlib/stats/array/max-by' );
+
+function accessor( v ) {
+ return v * 2.0;
+}
+
+var x = discreteUniform( 10, -50, 50, {
+ 'dtype': 'float64'
+});
+console.log( x );
+
+var v = maxBy( x, accessor );
+console.log( v );
+```
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+[@stdlib/array/base/accessor]: https://github.com/stdlib-js/stdlib/tree/develop/lib/node_modules/%40stdlib/array/base/accessor
+
+
+
+
diff --git a/lib/node_modules/@stdlib/stats/array/max-by/benchmark/benchmark.js b/lib/node_modules/@stdlib/stats/array/max-by/benchmark/benchmark.js
new file mode 100644
index 000000000000..0df2dff8716b
--- /dev/null
+++ b/lib/node_modules/@stdlib/stats/array/max-by/benchmark/benchmark.js
@@ -0,0 +1,107 @@
+/**
+* @license Apache-2.0
+*
+* Copyright (c) 2025 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 uniform = require( '@stdlib/random/array/uniform' );
+var isnan = require( '@stdlib/math/base/assert/is-nan' );
+var pow = require( '@stdlib/math/base/special/pow' );
+var pkg = require( './../package.json' ).name;
+var maxBy = require( './../lib' );
+
+
+// VARIABLES //
+
+var options = {
+ 'dtype': 'generic'
+};
+
+
+// FUNCTIONS //
+
+/**
+* Accessor function.
+*
+* @private
+* @param {number} value - array element
+* @returns {number} accessed value
+*/
+function accessor( value ) {
+ return value * 2.0;
+}
+
+/**
+* Creates a benchmark function.
+*
+* @private
+* @param {PositiveInteger} len - array length
+* @returns {Function} benchmark function
+*/
+function createBenchmark( len ) {
+ var x = uniform( len, -10, 10, options );
+ return benchmark;
+
+ function benchmark( b ) {
+ var v;
+ var i;
+
+ b.tic();
+ for ( i = 0; i < b.iterations; i++ ) {
+ v = maxBy( x, accessor );
+ if ( isnan( v ) ) {
+ b.fail( 'should not return NaN' );
+ }
+ }
+ b.toc();
+ if ( isnan( v ) ) {
+ b.fail( 'should not return NaN' );
+ }
+ b.pass( 'benchmark finished' );
+ b.end();
+ }
+}
+
+
+// MAIN //
+
+/**
+* Main execution sequence.
+*
+* @private
+*/
+function main() {
+ var len;
+ var min;
+ var max;
+ var f;
+ var i;
+
+ min = 1; // 10^min
+ max = 6; // 10^max
+
+ for ( i = min; i <= max; i++ ) {
+ len = pow( 10, i );
+ f = createBenchmark( len );
+ bench( pkg+':len='+len, f );
+ }
+}
+
+main();
diff --git a/lib/node_modules/@stdlib/stats/array/max-by/docs/repl.txt b/lib/node_modules/@stdlib/stats/array/max-by/docs/repl.txt
new file mode 100644
index 000000000000..2de80ac61249
--- /dev/null
+++ b/lib/node_modules/@stdlib/stats/array/max-by/docs/repl.txt
@@ -0,0 +1,43 @@
+
+{{alias}}( x, clbk[, thisArg] )
+ Computes the maximum value of an array via a callback function.
+
+ If provided an empty array, the function returns `NaN`.
+
+ The callback function is provided three arguments:
+
+ - value: current array element.
+ - index: current array index.
+ - array: the input array.
+
+ The callback function should return a numeric value.
+
+ If the callback function does not return any value (or equivalently,
+ explicitly returns `undefined`), the value is ignored.
+
+ Parameters
+ ----------
+ x: Array|TypedArray
+ Input array.
+
+ clbk: Function
+ Callback function.
+
+ thisArg: any (optional)
+ Execution context.
+
+ Returns
+ -------
+ out: number
+ Maximum value.
+
+ Examples
+ --------
+ > function accessor( v ) { return v * 2.0; };
+ > var x = [ -2.0, 1.0, 3.0, -5.0, 4.0, -1.0, -3.0 ];
+ > {{alias}}( x, accessor )
+ 8.0
+
+ See Also
+ --------
+
diff --git a/lib/node_modules/@stdlib/stats/array/max-by/docs/types/index.d.ts b/lib/node_modules/@stdlib/stats/array/max-by/docs/types/index.d.ts
new file mode 100644
index 000000000000..c8ab935983d9
--- /dev/null
+++ b/lib/node_modules/@stdlib/stats/array/max-by/docs/types/index.d.ts
@@ -0,0 +1,97 @@
+/*
+* @license Apache-2.0
+*
+* Copyright (c) 2025 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
+
+///
+
+import { NumericArray, Collection, AccessorArrayLike } from '@stdlib/types/array';
+
+/**
+* Input array.
+*/
+type InputArray = NumericArray | Collection | AccessorArrayLike;
+
+/**
+* Returns an accessed value.
+*
+* @returns accessed value
+*/
+type Nullary = ( this: ThisArg ) => number | void;
+
+/**
+* Returns an accessed value.
+*
+* @param value - current array element
+* @returns accessed value
+*/
+type Unary = ( this: ThisArg, value: T ) => number | void;
+
+/**
+* Returns an accessed value.
+*
+* @param value - current array element
+* @param index - current array index
+* @returns accessed value
+*/
+type Binary = ( this: ThisArg, value: T, index: number ) => number | void;
+
+/**
+* Returns an accessed value.
+*
+* @param value - current array element
+* @param index - current array index
+* @param array - input array
+* @returns accessed value
+*/
+type Ternary = ( this: ThisArg, value: T, index: number, array: U ) => number | void;
+
+/**
+* Returns an accessed value.
+*
+* @param value - current array element
+* @param index - current array index
+* @param array - input array
+* @returns accessed value
+*/
+type Callback = Nullary | Unary | Binary | Ternary;
+
+/**
+* Computes the maximum value of an array via a callback function.
+*
+* @param x - input array
+* @param clbk - callback
+* @param thisArg - execution context
+* @returns maximum value
+*
+* @example
+* var x = [ -2.0, 1.0, 3.0, -5.0, 4.0, 0.0, -1.0, -3.0 ];
+*
+* function accessor( v ) {
+* return v * 2.0;
+* }
+*
+* var v = maxBy( x, accessor );
+* // returns 8.0
+*/
+declare function maxBy( x: U, clbk: Callback, thisArg?: ThisParameterType> ): number;
+
+
+// EXPORTS //
+
+export = maxBy;
diff --git a/lib/node_modules/@stdlib/stats/array/max-by/docs/types/test.ts b/lib/node_modules/@stdlib/stats/array/max-by/docs/types/test.ts
new file mode 100644
index 000000000000..47eb7140907f
--- /dev/null
+++ b/lib/node_modules/@stdlib/stats/array/max-by/docs/types/test.ts
@@ -0,0 +1,72 @@
+/*
+* @license Apache-2.0
+*
+* Copyright (c) 2025 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 AccessorArray = require( '@stdlib/array/base/accessor' );
+import maxBy = require( './index' );
+
+const accessor = (): number => {
+ return 5.0;
+};
+
+
+// TESTS //
+
+// The function returns a number...
+{
+ const x = new Float64Array( 10 );
+
+ maxBy( x, accessor ); // $ExpectType number
+ maxBy( new AccessorArray( x ), accessor ); // $ExpectType number
+
+ maxBy( x, accessor, {} ); // $ExpectType number
+ maxBy( new AccessorArray( x ), accessor, {} ); // $ExpectType number
+}
+
+// The compiler throws an error if the function is provided a first argument which is not a numeric array...
+{
+ maxBy( 10, accessor ); // $ExpectError
+ maxBy( '10', accessor ); // $ExpectError
+ maxBy( true, accessor ); // $ExpectError
+ maxBy( false, accessor ); // $ExpectError
+ maxBy( null, accessor ); // $ExpectError
+ maxBy( undefined, accessor ); // $ExpectError
+ maxBy( {}, accessor ); // $ExpectError
+ maxBy( ( x: number ): number => x, accessor ); // $ExpectError
+}
+
+// The compiler throws an error if the function is provided a second argument which is not a function...
+{
+ const x = new Float64Array( 10 );
+
+ maxBy( x, '10' ); // $ExpectError
+ maxBy( x, true ); // $ExpectError
+ maxBy( x, false ); // $ExpectError
+ maxBy( x, null ); // $ExpectError
+ maxBy( x, undefined ); // $ExpectError
+ maxBy( x, [] ); // $ExpectError
+ maxBy( x, {} ); // $ExpectError
+}
+
+// The compiler throws an error if the function is provided an unsupported number of arguments...
+{
+ const x = new Float64Array( 10 );
+
+ maxBy(); // $ExpectError
+ maxBy( x ); // $ExpectError
+ maxBy( x, accessor, {}, 10 ); // $ExpectError
+}
diff --git a/lib/node_modules/@stdlib/stats/array/max-by/examples/index.js b/lib/node_modules/@stdlib/stats/array/max-by/examples/index.js
new file mode 100644
index 000000000000..008699ccd996
--- /dev/null
+++ b/lib/node_modules/@stdlib/stats/array/max-by/examples/index.js
@@ -0,0 +1,34 @@
+/**
+* @license Apache-2.0
+*
+* Copyright (c) 2025 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 discreteUniform = require( '@stdlib/random/array/discrete-uniform' );
+var maxBy = require( './../lib' );
+
+function accessor( v ) {
+ return v * 2.0;
+}
+
+var x = discreteUniform( 10, -50, 50, {
+ 'dtype': 'float64'
+});
+console.log( x );
+
+var v = maxBy( x, accessor );
+console.log( v );
diff --git a/lib/node_modules/@stdlib/stats/array/max-by/lib/index.js b/lib/node_modules/@stdlib/stats/array/max-by/lib/index.js
new file mode 100644
index 000000000000..e7e5644db6c9
--- /dev/null
+++ b/lib/node_modules/@stdlib/stats/array/max-by/lib/index.js
@@ -0,0 +1,46 @@
+/**
+* @license Apache-2.0
+*
+* Copyright (c) 2025 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';
+
+/**
+* Compute the maximum value of an array via a callback function.
+*
+* @module @stdlib/stats/array/max-by
+*
+* @example
+* var maxBy = require( '@stdlib/stats/array/max-by' );
+*
+* function accessor( v ) {
+* return v * 2.0;
+* }
+*
+* var x = [ -2.0, 1.0, 3.0, -5.0, 4.0, 0.0, -1.0, -3.0 ];
+*
+* var v = maxBy( x, accessor );
+* // returns 8.0
+*/
+
+// MODULES //
+
+var main = require( './main.js' );
+
+
+// EXPORTS //
+
+module.exports = main;
diff --git a/lib/node_modules/@stdlib/stats/array/max-by/lib/main.js b/lib/node_modules/@stdlib/stats/array/max-by/lib/main.js
new file mode 100644
index 000000000000..925ca2afcad7
--- /dev/null
+++ b/lib/node_modules/@stdlib/stats/array/max-by/lib/main.js
@@ -0,0 +1,94 @@
+/**
+* @license Apache-2.0
+*
+* Copyright (c) 2025 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 isCollection = require( '@stdlib/assert/is-collection' );
+var dtypes = require( '@stdlib/array/dtypes' );
+var dtype = require( '@stdlib/array/dtype' );
+var contains = require( '@stdlib/array/base/assert/contains' );
+var join = require( '@stdlib/array/base/join' );
+var strided = require( '@stdlib/stats/base/max-by' ).ndarray;
+var format = require( '@stdlib/string/format' );
+var isFunction = require( '@stdlib/assert/is-function' );
+
+
+// VARIABLES //
+
+var IDTYPES = dtypes( 'real_and_generic' );
+var GENERIC_DTYPE = 'generic';
+
+
+// MAIN //
+
+/**
+* Computes the maximum value of an array via a callback function.
+*
+* @param {NumericArray} x - input array
+* @param {Callback} clbk - callback
+* @param {*} [thisArg] - execution context
+* @throws {TypeError} first argument must be an array-like object
+* @throws {TypeError} first argument must have a supported data type
+* @throws {TypeError} second argument must be a function
+* @returns {number} maximum value
+*
+* @example
+* var x = [ -2.0, 1.0, 3.0, -5.0, 4.0, 0.0, -1.0, -3.0 ];
+*
+* function accessor( v ) {
+* return v * 2.0;
+* }
+*
+* var v = maxBy( x, accessor );
+* // returns 8.0
+*/
+function maxBy( x, clbk, thisArg ) {
+ var dt;
+ if ( !isCollection( x ) ) {
+ throw new TypeError( format( 'invalid argument. First argument must be an array-like object. Value: `%s`.', x ) );
+ }
+ dt = dtype( x ) || GENERIC_DTYPE;
+ if ( !contains( IDTYPES, dt ) ) {
+ throw new TypeError( format( 'invalid argument. First argument must have one of the following data types: "%s". Data type: `%s`.', join( IDTYPES, '", "' ), dt ) );
+ }
+ if ( !isFunction( clbk ) ) {
+ throw new TypeError( format( 'invalid argument. Second argument must be a function. Value: `%s`.', clbk ) );
+ }
+ return strided( x.length, x, 1, 0, wrapper );
+
+ /**
+ * Invokes a provided callback.
+ *
+ * @private
+ * @param {number} value - current element
+ * @param {NonNegativeInteger} aidx - current array index
+ * @param {NonNegativeInteger} sidx - current strided index
+ * @param {NumericArray} arr - input array
+ * @returns {number} callback return value
+ */
+ function wrapper( value, aidx, sidx, arr ) {
+ return clbk.call( thisArg, value, aidx, arr );
+ }
+}
+
+
+// EXPORTS //
+
+module.exports = maxBy;
diff --git a/lib/node_modules/@stdlib/stats/array/max-by/package.json b/lib/node_modules/@stdlib/stats/array/max-by/package.json
new file mode 100644
index 000000000000..bfd8e097b985
--- /dev/null
+++ b/lib/node_modules/@stdlib/stats/array/max-by/package.json
@@ -0,0 +1,67 @@
+{
+ "name": "@stdlib/stats/array/max-by",
+ "version": "0.0.0",
+ "description": "Calculate the maximum value of an array via a callback function.",
+ "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",
+ "stdmath",
+ "statistics",
+ "stats",
+ "mathematics",
+ "math",
+ "maximum",
+ "max",
+ "range",
+ "extremes",
+ "domain",
+ "extent",
+ "array"
+ ],
+ "__stdlib__": {}
+}
diff --git a/lib/node_modules/@stdlib/stats/array/max-by/test/test.js b/lib/node_modules/@stdlib/stats/array/max-by/test/test.js
new file mode 100644
index 000000000000..b24349e41e2f
--- /dev/null
+++ b/lib/node_modules/@stdlib/stats/array/max-by/test/test.js
@@ -0,0 +1,304 @@
+/**
+* @license Apache-2.0
+*
+* Copyright (c) 2025 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 isnan = require( '@stdlib/math/base/assert/is-nan' );
+var toAccessorArray = require( '@stdlib/array/base/to-accessor-array' );
+var isPositiveZero = require( '@stdlib/math/base/assert/is-positive-zero' );
+var BooleanArray = require( '@stdlib/array/bool' );
+var Complex128Array = require( '@stdlib/array/complex128' );
+var maxBy = require( './../lib/main.js' );
+
+
+// FUNCTIONS //
+
+function accessor( v ) {
+ if ( v === void 0 ) {
+ return;
+ }
+ return v * 2.0;
+}
+
+
+// TESTS //
+
+tape( 'main export is a function', function test( t ) {
+ t.ok( true, __filename );
+ t.strictEqual( typeof maxBy, 'function', 'main export is a function' );
+ t.end();
+});
+
+tape( 'the function has an arity of 3', function test( t ) {
+ t.strictEqual( maxBy.length, 3, 'returns expected value' );
+ t.end();
+});
+
+tape( 'the function throws an error if provided a first argument which is not an array-like object', function test( t ) {
+ var values;
+ var i;
+
+ values = [
+ '5',
+ 5,
+ NaN,
+ true,
+ false,
+ null,
+ void 0,
+ {},
+ 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() {
+ maxBy( value, accessor );
+ };
+ }
+});
+
+tape( 'the function throws an error if provided a first argument which has an unsupported data type', function test( t ) {
+ var values;
+ var i;
+
+ values = [
+ new BooleanArray( 4 ),
+ new Complex128Array( 4 )
+ ];
+ 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() {
+ maxBy( value, accessor );
+ };
+ }
+});
+
+tape( 'the function throws an error if provided a second argument which is not a function', function test( t ) {
+ var values;
+ var i;
+ var x;
+
+ x = [ 1.0, -2.0, -4.0, 5.0, 0.0, 3.0 ];
+ values = [
+ '5',
+ 5,
+ NaN,
+ null,
+ void 0,
+ true,
+ [],
+ {}
+ ];
+
+ for ( i = 0; i < values.length; i++ ) {
+ t.throws( badValue( values[i] ), TypeError, 'throws a type error when provided '+values[i] );
+ }
+ t.end();
+
+ function badValue( value ) {
+ return function badValue() {
+ maxBy( x, value );
+ };
+ }
+});
+
+tape( 'the function calculates the maximum value of an array via a callback function', function test( t ) {
+ var x;
+ var v;
+
+ x = [ 1.0, -2.0, -4.0, 5.0, 0.0, 3.0 ];
+ v = maxBy( x, accessor );
+ t.strictEqual( v, 10.0, 'returns expected value' );
+
+ x = [ -4.0, -5.0 ];
+ v = maxBy( x, accessor );
+ t.strictEqual( v, -8.0, 'returns expected value' );
+
+ x = [ -0.0, 0.0, -0.0 ];
+ v = maxBy( x, accessor );
+ t.strictEqual( isPositiveZero( v ), true, 'returns expected value' );
+
+ x = [ NaN ];
+ v = maxBy( x, accessor );
+ t.strictEqual( isnan( v ), true, 'returns expected value' );
+
+ x = [ NaN, NaN ];
+ v = maxBy( x, accessor );
+ t.strictEqual( isnan( v ), true, 'returns expected value' );
+
+ t.end();
+});
+
+tape( 'the function calculates the maximum value of an array via a callback function (accessors)', function test( t ) {
+ var x;
+ var v;
+
+ x = [ 1.0, -2.0, -4.0, 5.0, 0.0, 3.0 ];
+ v = maxBy( toAccessorArray( x ), accessor );
+ t.strictEqual( v, 10.0, 'returns expected value' );
+
+ x = [ -4.0, -5.0 ];
+ v = maxBy( toAccessorArray( x ), accessor );
+ t.strictEqual( v, -8.0, 'returns expected value' );
+
+ x = [ -0.0, 0.0, -0.0 ];
+ v = maxBy( toAccessorArray( x ), accessor );
+ t.strictEqual( isPositiveZero( v ), true, 'returns expected value' );
+
+ x = [ NaN ];
+ v = maxBy( toAccessorArray( x ), accessor );
+ t.strictEqual( isnan( v ), true, 'returns expected value' );
+
+ x = [ NaN, NaN ];
+ v = maxBy( toAccessorArray( x ), accessor );
+ t.strictEqual( isnan( v ), true, 'returns expected value' );
+
+ t.end();
+});
+
+tape( 'the function calculates the maximum value of an array (array-like object)', function test( t ) {
+ var x;
+ var v;
+
+ x = {
+ 'length': 6,
+ '0': 1.0,
+ '1': -2.0,
+ '2': -4.0,
+ '3': 5.0,
+ '4': 0.0,
+ '5': 3.0
+ };
+ v = maxBy( x, accessor );
+ t.strictEqual( v, 10.0, 'returns expected value' );
+
+ t.end();
+});
+
+tape( 'the function supports providing a callback execution context', function test( t ) {
+ var expected;
+ var indices;
+ var values;
+ var arrays;
+ var ctx;
+ var x;
+
+ x = [ 1.0, 2.0, 3.0, 4.0, 5.0 ];
+ ctx = {
+ 'count': 0
+ };
+ indices = [];
+ values = [];
+ arrays = [];
+ maxBy( x, accessor, ctx );
+
+ t.strictEqual( ctx.count, x.length, 'returns expected value' );
+
+ expected = [ 0, 1, 2, 3, 4 ];
+ t.deepEqual( indices, expected, 'returns expected value' );
+
+ expected = [ 1.0, 2.0, 3.0, 4.0, 5.0 ];
+ t.deepEqual( values, expected, 'returns expected value' );
+
+ expected = [ x, x, x, x, x ];
+ t.deepEqual( arrays, expected, 'returns expected value' );
+ t.end();
+
+ function accessor( v, idx, arr ) {
+ this.count += 1; // eslint-disable-line no-invalid-this
+ indices.push( idx );
+ values.push( v );
+ arrays.push( arr );
+ return v * 2.0;
+ }
+});
+
+tape( 'the function supports providing a callback execution context (accessors)', function test( t ) {
+ var expected;
+ var indices;
+ var values;
+ var arrays;
+ var ctx;
+ var ax;
+ var x;
+
+ x = [ 1.0, 2.0, 3.0, 4.0, 5.0 ];
+ ax = toAccessorArray( x );
+ ctx = {
+ 'count': 0
+ };
+ indices = [];
+ values = [];
+ arrays = [];
+ maxBy( ax, accessor, ctx );
+
+ t.strictEqual( ctx.count, x.length, 'returns expected value' );
+
+ expected = [ 0, 1, 2, 3, 4 ];
+ t.deepEqual( indices, expected, 'returns expected value' );
+
+ expected = [ 1.0, 2.0, 3.0, 4.0, 5.0 ];
+ t.deepEqual( values, expected, 'returns expected value' );
+
+ expected = [ ax, ax, ax, ax, ax ];
+ t.deepEqual( arrays, expected, 'returns expected value' );
+ t.end();
+
+ function accessor( v, idx, arr ) {
+ this.count += 1; // eslint-disable-line no-invalid-this
+ indices.push( idx );
+ values.push( v );
+ arrays.push( arr );
+ return v * 2.0;
+ }
+});
+
+tape( 'if provided an empty array, the function returns `NaN`', function test( t ) {
+ var v = maxBy( [], accessor );
+ t.strictEqual( isnan( v ), true, 'returns expected value' );
+ t.end();
+});
+
+tape( 'if provided an empty array, the function returns `NaN` (accessors)', function test( t ) {
+ var v = maxBy( toAccessorArray( [] ), accessor );
+ t.strictEqual( isnan( v ), true, 'returns expected value' );
+ t.end();
+});
+
+tape( 'if provided an array containing a single element, the function returns the result of applying a provided callback function to that element', function test( t ) {
+ var v = maxBy( [ 1.0 ], accessor );
+ t.strictEqual( v, 2.0, 'returns expected value' );
+ t.end();
+});
+
+tape( 'if provided an array containing a single element, the function returns the result of applying a provided callback function to that element (accessors)', function test( t ) {
+ var v = maxBy( toAccessorArray( [ 1.0 ] ), accessor );
+ t.strictEqual( v, 2.0, 'returns expected value' );
+ t.end();
+});