From a561bffc90a32d32ddb4781f288864d354bd13c5 Mon Sep 17 00:00:00 2001
From: stdlib-bot <noreply@stdlib.io>
Date: Sat, 18 May 2024 01:50:54 +0000
Subject: [PATCH] Auto-generated commit

---
 base/mskfilter-map/README.md                  | 171 +++++++++
 .../benchmark/benchmark.assign.length.js      | 106 ++++++
 base/mskfilter-map/benchmark/benchmark.js     |  56 +++
 .../benchmark/benchmark.length.js             |  98 ++++++
 base/mskfilter-map/docs/repl.txt              |  84 +++++
 base/mskfilter-map/docs/types/index.d.ts      | 166 +++++++++
 base/mskfilter-map/docs/types/test.ts         | 259 ++++++++++++++
 base/mskfilter-map/examples/index.js          |  38 ++
 base/mskfilter-map/lib/assign.js              | 182 ++++++++++
 base/mskfilter-map/lib/index.js               |  71 ++++
 base/mskfilter-map/lib/main.js                |  71 ++++
 base/mskfilter-map/package.json               |  66 ++++
 base/mskfilter-map/test/test.assign.js        | 325 ++++++++++++++++++
 base/mskfilter-map/test/test.js               |  41 +++
 base/mskfilter-map/test/test.main.js          | 158 +++++++++
 15 files changed, 1892 insertions(+)
 create mode 100644 base/mskfilter-map/README.md
 create mode 100644 base/mskfilter-map/benchmark/benchmark.assign.length.js
 create mode 100644 base/mskfilter-map/benchmark/benchmark.js
 create mode 100644 base/mskfilter-map/benchmark/benchmark.length.js
 create mode 100644 base/mskfilter-map/docs/repl.txt
 create mode 100644 base/mskfilter-map/docs/types/index.d.ts
 create mode 100644 base/mskfilter-map/docs/types/test.ts
 create mode 100644 base/mskfilter-map/examples/index.js
 create mode 100644 base/mskfilter-map/lib/assign.js
 create mode 100644 base/mskfilter-map/lib/index.js
 create mode 100644 base/mskfilter-map/lib/main.js
 create mode 100644 base/mskfilter-map/package.json
 create mode 100644 base/mskfilter-map/test/test.assign.js
 create mode 100644 base/mskfilter-map/test/test.js
 create mode 100644 base/mskfilter-map/test/test.main.js

diff --git a/base/mskfilter-map/README.md b/base/mskfilter-map/README.md
new file mode 100644
index 00000000..07368993
--- /dev/null
+++ b/base/mskfilter-map/README.md
@@ -0,0 +1,171 @@
+<!--
+
+@license Apache-2.0
+
+Copyright (c) 2024 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.
+
+-->
+
+# mskfilterMap
+
+> Apply a mask to a provided input array and return a new array after applying a mapping function.
+
+<section class="usage">
+
+## Usage
+
+```javascript
+var mskfilterMap = require( '@stdlib/array/base/mskfilter-map' );
+```
+
+#### mskfilterMap( x, mask, clbk\[, thisArg] )
+
+Applies a mask to a provided input array and returns a new array after applying a mapping function.
+
+```javascript
+function clbk( value ) {
+    return value * 2;
+}
+
+var x = [ 1, 2, 3, 4 ];
+var m = [ 0, 1, 0, 1 ];
+
+var y = mskfilterMap( x, m, clbk );
+// returns [ 4, 8 ]
+```
+
+The function supports the following parameters:
+
+-   **x**: input array.
+-   **mask**: mask array.
+-   **clbk**: function to apply.
+-   **thisArg**: applied function execution context (_optional_).
+
+To set the applied function's execution context, provide a `thisArg`.
+
+<!-- eslint-disable no-invalid-this -->
+
+```javascript
+function clbk( x ) {
+    this.count += 1;
+    return x;
+}
+
+var x = [ 1, 2, 3, 4 ];
+var m = [ 1, 1, 0, 1 ];
+
+var ctx = {
+    'count': 0
+};
+
+var y = mskfilterMap( x, m, clbk, ctx );
+// returns [ 1, 2, 4 ]
+
+var v = ctx.count;
+// returns 3
+```
+
+The function **always** returns a new "generic" array.
+
+#### mskfilterMap.assign( x, mask, out, stride, offset, clbk\[, thisArg] )
+
+Applies a mask and mapping function to a provided input array and assigns results to elements in a provided output array.
+
+```javascript
+function clbk( value ) {
+    return value * 2;
+}
+
+var x = [ 1, 2, 3, 4 ];
+var m = [ 0, 1, 0, 1 ];
+
+var out = [ 0, 0, 0, 0 ];
+var arr = mskfilterMap.assign( x, m, out, -2, out.length-1, clbk );
+// returns [ 0, 8, 0, 4 ]
+
+var bool = ( arr === out );
+// returns true
+```
+
+The function supports the following parameters:
+
+-   **x**: input array.
+-   **mask**: mask array.
+-   **out**: output array.
+-   **stride**: output array stride.
+-   **offset**: output array offset.
+-   **clbk**: function to apply.
+-   **thisArg**: applied function execution context (_optional_).
+
+</section>
+
+<!-- /.usage -->
+
+<section class="notes">
+
+## Notes
+
+-   If a `mask` array element is truthy, the corresponding element in `x` is **included** in the output array; otherwise, the corresponding element in `x` is "masked" and thus **excluded** from the output array.
+
+</section>
+
+<!-- /.notes -->
+
+<section class="examples">
+
+## Examples
+
+<!-- eslint no-undef: "error" -->
+
+```javascript
+var zeroTo = require( '@stdlib/array/base/zero-to' );
+var bernoulli = require( '@stdlib/random/array/bernoulli' );
+var abs2 = require( '@stdlib/math/base/special/abs2' );
+var mskfilterMap = require( '@stdlib/array/base/mskfilter-map' );
+
+// Generate a linearly spaced array:
+var x = zeroTo( 20 );
+console.log( x );
+
+// Generate a random mask:
+var mask = bernoulli( x.length, 0.5, {
+    'dtype': 'generic'
+});
+console.log( mask );
+
+// Filter an array using the mask:
+var y = mskfilterMap( x, mask, abs2 );
+console.log( y );
+```
+
+</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 -->
diff --git a/base/mskfilter-map/benchmark/benchmark.assign.length.js b/base/mskfilter-map/benchmark/benchmark.assign.length.js
new file mode 100644
index 00000000..9f771198
--- /dev/null
+++ b/base/mskfilter-map/benchmark/benchmark.assign.length.js
@@ -0,0 +1,106 @@
+/**
+* @license Apache-2.0
+*
+* Copyright (c) 2024 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 pow = require( '@stdlib/math/base/special/pow' );
+var zeroTo = require( './../../../base/zero-to' );
+var zeros = require( './../../../zeros' );
+var ones = require( './../../../ones' );
+var isArray = require( '@stdlib/assert/is-array' );
+var isnan = require( '@stdlib/assert/is-nan' ).isPrimitive;
+var identity = require( '@stdlib/math/base/special/identity' );
+var pkg = require( './../package.json' ).name;
+var mskfilterMap = require( './../lib' );
+
+
+// FUNCTIONS //
+
+/**
+* Creates a benchmark function.
+*
+* @private
+* @param {PositiveInteger} len - array length
+* @returns {Function} benchmark function
+*/
+function createBenchmark( len ) {
+	var mask;
+	var out;
+	var x;
+
+	x = zeroTo( len, 'generic' );
+	mask = ones( len, 'generic' );
+	out = zeros( len, 'generic' );
+
+	return benchmark;
+
+	/**
+	* Benchmark function.
+	*
+	* @private
+	* @param {Benchmark} b - benchmark instance
+	*/
+	function benchmark( b ) {
+		var v;
+		var i;
+
+		b.tic();
+		for ( i = 0; i < b.iterations; i++ ) {
+			v = mskfilterMap.assign( x, mask, out, 1, 0, identity );
+			if ( typeof v !== 'object' ) {
+				b.fail( 'should return an array' );
+			}
+		}
+		b.toc();
+		if ( !isArray( v ) || isnan( v[ i%len ] ) ) {
+			b.fail( 'should return an array' );
+		}
+		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+':assign:len='+len, f );
+	}
+}
+
+main();
diff --git a/base/mskfilter-map/benchmark/benchmark.js b/base/mskfilter-map/benchmark/benchmark.js
new file mode 100644
index 00000000..099400c8
--- /dev/null
+++ b/base/mskfilter-map/benchmark/benchmark.js
@@ -0,0 +1,56 @@
+/**
+* @license Apache-2.0
+*
+* Copyright (c) 2024 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 isArray = require( '@stdlib/assert/is-array' );
+var zeroTo = require( './../../../base/zero-to' );
+var ones = require( './../../../base/ones' );
+var identity = require( '@stdlib/math/base/special/identity' );
+var pkg = require( './../package.json' ).name;
+var mskfilterMap = require( './../lib' );
+
+
+// MAIN //
+
+bench( pkg+'::copy:len=100', function benchmark( b ) {
+	var x;
+	var y;
+	var i;
+	var v;
+
+	x = zeroTo( 100 );
+	y = ones( x.length );
+
+	b.tic();
+	for ( i = 0; i < b.iterations; i++ ) {
+		v = mskfilterMap( x, y, identity );
+		if ( typeof v !== 'object' ) {
+			b.fail( 'should return an array' );
+		}
+	}
+	b.toc();
+	if ( !isArray( v ) ) {
+		b.fail( 'should return an array' );
+	}
+	b.pass( 'benchmark finished' );
+	b.end();
+});
diff --git a/base/mskfilter-map/benchmark/benchmark.length.js b/base/mskfilter-map/benchmark/benchmark.length.js
new file mode 100644
index 00000000..2bf970ff
--- /dev/null
+++ b/base/mskfilter-map/benchmark/benchmark.length.js
@@ -0,0 +1,98 @@
+/**
+* @license Apache-2.0
+*
+* Copyright (c) 2024 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 pow = require( '@stdlib/math/base/special/pow' );
+var zeroTo = require( './../../../base/zero-to' );
+var ones = require( './../../../base/ones' );
+var isArray = require( '@stdlib/assert/is-array' );
+var identity = require( '@stdlib/math/base/special/identity' );
+var pkg = require( './../package.json' ).name;
+var mskfilterMap = require( './../lib' );
+
+
+// FUNCTIONS //
+
+/**
+* Creates a benchmark function.
+*
+* @private
+* @param {PositiveInteger} len - array length
+* @returns {Function} benchmark function
+*/
+function createBenchmark( len ) {
+	var x = zeroTo( len );
+	var y = ones( len );
+	return benchmark;
+
+	/**
+	* Benchmark function.
+	*
+	* @private
+	* @param {Benchmark} b - benchmark instance
+	*/
+	function benchmark( b ) {
+		var v;
+		var i;
+
+		b.tic();
+		for ( i = 0; i < b.iterations; i++ ) {
+			v = mskfilterMap( x, y, identity );
+			if ( typeof v !== 'object' ) {
+				b.fail( 'should return an array' );
+			}
+		}
+		b.toc();
+		if ( !isArray( v ) ) {
+			b.fail( 'should return an array' );
+		}
+		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/base/mskfilter-map/docs/repl.txt b/base/mskfilter-map/docs/repl.txt
new file mode 100644
index 00000000..5ab7835f
--- /dev/null
+++ b/base/mskfilter-map/docs/repl.txt
@@ -0,0 +1,84 @@
+
+{{alias}}( x, mask, fcn[, thisArg] )
+    Applies a mask to a provided input array and returns a new array after
+    applying a mapping function.
+
+    If a mask array element is truthy, the corresponding element in `x` is
+    included in the output array; otherwise, the corresponding element in `x`
+    is "masked" and thus excluded from the output array.
+
+    Parameters
+    ----------
+    x: ArrayLikeObject
+        Input array.
+
+    mask: ArrayLikeObject
+        Mask array.
+
+    fcn: Function
+        Function to apply.
+
+    thisArg: any (optional)
+        Function execution context.
+
+    Returns
+    -------
+    out: Array
+        Output array.
+
+    Examples
+    --------
+    > var x = [ 1, -2, -3, 4 ];
+    > var y = {{alias}}( x, [ 0, 1, 0, 1 ], {{alias:@stdlib/math/base/special/abs}} )
+    [ 2, 4 ]
+
+
+{{alias}}.assign( x, mask, out, stride, offset, fcn[, thisArg] )
+    Applies a mask and mapping function to a provided input array and assigns
+    results to elements in a provided output array.
+
+    If a mask array element is truthy, the corresponding element in `x` is
+    included in the output array; otherwise, the corresponding element in `x`
+    is "masked" and thus excluded from the output array.
+
+    Parameters
+    ----------
+    x: ArrayLikeObject
+        Input array.
+
+    mask: ArrayLikeObject
+        Mask array.
+
+    out: ArrayLikeObject
+        Output array.
+
+    stride: integer
+        Output array stride.
+
+    offset: integer
+        Output array offset.
+
+    fcn: Function
+        Function to apply.
+
+    thisArg: any (optional)
+        Function execution context.
+
+    Returns
+    -------
+    out: ArrayLikeObject
+        Output array.
+
+    Examples
+    --------
+    > var x = [ -1, -2, -3, -4 ];
+    > var m = [ 0, 1, 0, 1 ];
+    > var out = [ 0, 0, 0, 0 ];
+    > var arr = {{alias}}.assign( x, m, out, 2, 0, {{alias:@stdlib/math/base/special/abs}} )
+    [ 2, 0, 4, 0 ]
+    > var bool = ( arr === out )
+    true
+
+    See Also
+    --------
+
diff --git a/base/mskfilter-map/docs/types/index.d.ts b/base/mskfilter-map/docs/types/index.d.ts
new file mode 100644
index 00000000..bbf5f503
--- /dev/null
+++ b/base/mskfilter-map/docs/types/index.d.ts
@@ -0,0 +1,166 @@
+/*
+* @license Apache-2.0
+*
+* Copyright (c) 2024 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
+
+/// <reference types="@stdlib/types"/>
+
+import { Array2D, Collection } from '@stdlib/types/array';
+
+/**
+* Callback invoked for each array element.
+*
+* @returns result
+*/
+type Nullary<U, V> = ( this: V ) => U;
+
+/**
+* Callback invoked for each array element.
+*
+* @param value - array element
+* @returns result
+*/
+type Unary<T, U, V> = ( this: V, value: T ) => U;
+
+/**
+* Callback invoked for each array element.
+*
+* @param value - array element
+* @param indices - current array element indices
+* @returns result
+*/
+type Binary<T, U, V> = ( this: V, value: T, index: number ) => U;
+
+/**
+* Callback invoked for each array element.
+*
+* @param value - array element
+* @param indices - current array element indices
+* @param array - input array
+* @returns result
+*/
+type Ternary<T, U, V> = ( this: V, value: T, index: number, array: Array2D<T> ) => U;
+
+/**
+* Callback invoked for each array element.
+*
+* @param value - array element
+* @param indices - current array element indices
+* @param array - input array
+* @returns result
+*/
+type Callback<T, U, V> = Nullary<U, V> | Unary<T, U, V> | Binary<T, U, V> | Ternary<T, U, V>;
+
+/**
+* Interface describing the main export.
+*/
+interface Routine {
+	/**
+	* Applies a mask to a provided input array and returns a new array after applying a mapping function.
+	*
+	* @param x - input array
+	* @param mask - mask array
+	* @param clbk - callback to invoke
+	* @param thisArg - execution context
+	* @returns output array
+	*
+	* @example
+	* var x = [ 1, 2, 3, 4 ];
+	*
+	* function scale( val ) {
+	*     return 10 * val;
+	* }
+	*
+	* var y = mskfilterMap( x, [ 0, 1, 0, 1 ], scale );
+	* // returns [ 20, 40 ]
+	*/
+	<T = unknown, U = unknown, V = unknown>( x: Collection<T>, mask: Collection, clbk: Callback<T, U, V>, thisArg?: ThisParameterType<Callback<T, U, V>> ): Array<U>;
+
+	/**
+	* Applies a mask and mapping function to an input array and assigns results to elements in an output array.
+	*
+	* @param x - input array
+	* @param mask - mask array
+	* @param out - output array
+	* @param stride - output array stride
+	* @param offset - output array offset
+	* @param clbk - callback to invoke
+	* @param thisArg - execution context
+	* @returns output array
+	*
+	* @example
+	* var x = [ 1, 2, 3, 4 ];
+	* var mask = [ 0, 1, 0, 1 ];
+	*
+	* var out = [ 0, 0, 0, 0 ];
+	*
+	* function scale( x ) {
+	*     return x * 10;
+	* }
+	*
+	* var arr = mskfilterMap.assign( x, mask, out, 1, 0, scale );
+	* // returns [ 20, 40, 0, 0 ]
+	*
+	* var bool = ( arr === out );
+	* // returns true
+	*/
+	assign<T = unknown, U = unknown, V = unknown, W = unknown>( x: Collection<T>, mask: Collection, out: Collection<W>, stride: number, offset: number, clbk: Callback<T, U, V>, thisArg?: ThisParameterType<Callback<T, U, V>> ): Collection<U | W>;
+}
+
+/**
+* Applies a mask to a provided input array and returns a new array after applying a mapping function.
+*
+* @param x - input array
+* @param mask - mask array
+* @param clbk - callback to invoke
+* @param thisArg - execution context
+* @returns output array
+*
+* @example
+* var x = [ 1, 2, 3, 4 ];
+*
+* function scale( val ) {
+*     return 10 * val;
+* }
+*
+* var y = mskfilterMap( x, [ 0, 1, 0, 1 ], scale );
+* // returns [ 20, 40 ]
+*
+* @example
+* var x = [ 1, 2, 3, 4 ];
+* var mask = [ 0, 1, 0, 1 ];
+*
+* var out = [ 0, 0, 0, 0 ];
+*
+* function scale( x ) {
+*     return x * 10;
+* }
+*
+* var arr = mskfilterMap.assign( x, mask, out, 1, 0, scale );
+* // returns [ 20, 40, 0, 0 ]
+*
+* var bool = ( arr === out );
+* // returns true
+*/
+declare var mskfilterMap: Routine;
+
+
+// EXPORTS //
+
+export = mskfilterMap;
+
diff --git a/base/mskfilter-map/docs/types/test.ts b/base/mskfilter-map/docs/types/test.ts
new file mode 100644
index 00000000..38f6761d
--- /dev/null
+++ b/base/mskfilter-map/docs/types/test.ts
@@ -0,0 +1,259 @@
+/*
+* @license Apache-2.0
+*
+* Copyright (c) 2024 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 mskfilterMap = require( './index' );
+
+/**
+* Unary function.
+*
+* @param value - input value
+* @returns result
+*/
+function clbk( value: number ): number {
+	return value;
+}
+
+// TESTS //
+
+// The function returns an array...
+{
+	const x = [ 1.0, 2.0, 3.0, 4.0 ];
+
+	mskfilterMap( x, [ 1, 1, 1, 1 ], clbk ); // $ExpectType number[]
+	mskfilterMap( x, [ 1, 1, 1, 1 ], clbk, {} ); //  $ExpectType number[]
+}
+
+// The compiler throws an error if the function is provided a first argument which is not an array-like object...
+{
+	mskfilterMap( 1, [ 0, 0 ], clbk ); // $ExpectError
+	mskfilterMap( true, [ 0, 0 ], clbk ); // $ExpectError
+	mskfilterMap( false, [ 0, 0 ], clbk ); // $ExpectError
+	mskfilterMap( null, [ 0, 0 ], clbk ); // $ExpectError
+	mskfilterMap( void 0, [ 0, 0 ], clbk ); // $ExpectError
+	mskfilterMap( {}, [ 0, 0 ], clbk ); // $ExpectError
+
+	mskfilterMap( 1, [ 0, 0 ], clbk, {} ); // $ExpectError
+	mskfilterMap( true, [ 0, 0 ], clbk, {} ); // $ExpectError
+	mskfilterMap( false, [ 0, 0 ], clbk, {} ); // $ExpectError
+	mskfilterMap( null, [ 0, 0 ], clbk, {} ); // $ExpectError
+	mskfilterMap( void 0, [ 0, 0 ], clbk, {} ); // $ExpectError
+	mskfilterMap( {}, [ 0, 0 ], clbk, {} ); // $ExpectError
+}
+
+// The compiler throws an error if the function is provided a second argument which is not an array-like object...
+{
+	mskfilterMap( [], 1, clbk ); // $ExpectError
+	mskfilterMap( [], true, clbk ); // $ExpectError
+	mskfilterMap( [], false, clbk ); // $ExpectError
+	mskfilterMap( [], null, clbk ); // $ExpectError
+	mskfilterMap( [], void 0, clbk ); // $ExpectError
+	mskfilterMap( [], {}, clbk ); // $ExpectError
+
+	mskfilterMap( [], 1, clbk, {} ); // $ExpectError
+	mskfilterMap( [], true, clbk, {} ); // $ExpectError
+	mskfilterMap( [], false, clbk, {} ); // $ExpectError
+	mskfilterMap( [], null, clbk, {} ); // $ExpectError
+	mskfilterMap( [], void 0, clbk, {} ); // $ExpectError
+	mskfilterMap( [], {}, clbk, {} ); // $ExpectError
+}
+
+// The compiler throws an error if the function is provided a third argument which is not a valid callback...
+{
+	const x = [1, 2];
+
+	mskfilterMap( x, [ 1, 1 ], 'abc' ); // $ExpectError
+	mskfilterMap( x, [ 1, 1 ], 3.14 ); // $ExpectError
+	mskfilterMap( x, [ 1, 1 ], true ); // $ExpectError
+	mskfilterMap( x, [ 1, 1 ], false ); // $ExpectError
+	mskfilterMap( x, [ 1, 1 ], null ); // $ExpectError
+	mskfilterMap( x, [ 1, 1 ], [ '1' ] ); // $ExpectError
+	mskfilterMap( x, [ 1, 1 ], {} ); // $ExpectError
+
+	mskfilterMap( x, [ 1, 1 ], 'abc', {} ); // $ExpectError
+	mskfilterMap( x, [ 1, 1 ], 3.14, {} ); // $ExpectError
+	mskfilterMap( x, [ 1, 1 ], true, {} ); // $ExpectError
+	mskfilterMap( x, [ 1, 1 ], false, {} ); // $ExpectError
+	mskfilterMap( x, [ 1, 1 ], null, {} ); // $ExpectError
+	mskfilterMap( x, [ 1, 1 ], [ '1' ], {} ); // $ExpectError
+	mskfilterMap( x, [ 1, 1 ], {}, {} ); // $ExpectError
+}
+
+// The compiler throws an error if the function is provided an unsupported number of arguments...
+{
+	const x = [ 1.0, 2.0 ];
+
+	mskfilterMap(); // $ExpectError
+	mskfilterMap( x ); // $ExpectError
+	mskfilterMap( x, [ 0, 1 ] ); // $ExpectError
+	mskfilterMap( x, [ 0, 1 ], clbk, {}, {} ); // $ExpectError
+}
+
+// Attached to the main export is an `assign` method which returns an array...
+{
+	const x = [ 1.0, 2.0, 3.0, 4.0 ];
+	const out = [ 0, 0, 0, 0 ];
+
+	mskfilterMap.assign( x, [ 1, 0, 1, 0 ], out, 1, 0, clbk ); // $ExpectType Collection<number>
+	mskfilterMap.assign( x, [ 1, 0, 1, 0 ], out, 1, 0, clbk, {} ); // $ExpectType Collection<number>
+}
+
+// The compiler throws an error if the `assign` method is provided a first argument which is not an array-like object...
+{
+	const mask = [ 0, 0, 0, 0 ];
+
+	mskfilterMap.assign( 'abc', mask, [ 0, 0, 0, 0 ], 1, 0, clbk ); // $ExpectError
+	mskfilterMap.assign( 3.14, mask, [ 0, 0, 0, 0 ], 1, 0, clbk ); // $ExpectError
+	mskfilterMap.assign( true, mask, [ 0, 0, 0, 0 ], 1, 0, clbk ); // $ExpectError
+	mskfilterMap.assign( false, mask, [ 0, 0, 0, 0 ], 1, 0, clbk ); // $ExpectError
+	mskfilterMap.assign( null, mask, [ 0, 0, 0, 0 ], 1, 0, clbk ); // $ExpectError
+	mskfilterMap.assign( [ '1' ], mask, [ 0, 0, 0, 0 ], 1, 0, clbk ); // $ExpectError
+	mskfilterMap.assign( {}, mask, [ 0, 0, 0, 0 ], 1, 0, clbk ); // $ExpectError
+	mskfilterMap.assign( ( x: number ): number => x, mask, [ 0, 0, 0, 0 ], 1, 0, clbk ); // $ExpectError
+
+	mskfilterMap.assign( 'abc', mask, [ 0, 0, 0, 0 ], 1, 0, clbk, {} ); // $ExpectError
+	mskfilterMap.assign( 3.14, mask, [ 0, 0, 0, 0 ], 1, 0, clbk, {} ); // $ExpectError
+	mskfilterMap.assign( true, mask, [ 0, 0, 0, 0 ], 1, 0, clbk, {} ); // $ExpectError
+	mskfilterMap.assign( false, mask, [ 0, 0, 0, 0 ], 1, 0, clbk, {} ); // $ExpectError
+	mskfilterMap.assign( null, mask, [ 0, 0, 0, 0 ], 1, 0, clbk, {} ); // $ExpectError
+	mskfilterMap.assign( [ '1' ], mask, [ 0, 0, 0, 0 ], 1, 0, clbk, {} ); // $ExpectError
+	mskfilterMap.assign( {}, mask, [ 0, 0, 0, 0 ], 1, 0, clbk, {} ); // $ExpectError
+	mskfilterMap.assign( ( x: number ): number => x, mask, [ 0, 0, 0, 0 ], 1, 0, clbk, {} ); // $ExpectError
+}
+
+// The compiler throws an error if the `assign` method is provided a second argument which is not an array-like object...
+{
+	const x = [ 1.0, 2.0, 3.0, 4.0 ];
+
+	mskfilterMap.assign( x, 3.14, [ 0, 0, 0, 0 ], 1, 0, clbk ); // $ExpectError
+	mskfilterMap.assign( x, true, [ 0, 0, 0, 0 ], 1, 0, clbk ); // $ExpectError
+	mskfilterMap.assign( x, false, [ 0, 0, 0, 0 ], 1, 0, clbk ); // $ExpectError
+	mskfilterMap.assign( x, null, [ 0, 0, 0, 0 ], 1, 0, clbk ); // $ExpectError
+	mskfilterMap.assign( x, {}, [ 0, 0, 0, 0 ], 1, 0, clbk ); // $ExpectError
+	mskfilterMap.assign( x, ( x: number ): number => x, [ 0, 0, 0, 0 ], 1, 0, clbk ); // $ExpectError
+
+	mskfilterMap.assign( x, 3.14, [ 0, 0, 0, 0 ], 1, 0, clbk, {} ); // $ExpectError
+	mskfilterMap.assign( x, true, [ 0, 0, 0, 0 ], 1, 0, clbk, {} ); // $ExpectError
+	mskfilterMap.assign( x, false, [ 0, 0, 0, 0 ], 1, 0, clbk, {} ); // $ExpectError
+	mskfilterMap.assign( x, null, [ 0, 0, 0, 0 ], 1, 0, clbk, {} ); // $ExpectError
+	mskfilterMap.assign( x, {}, [ 0, 0, 0, 0 ], 1, 0, clbk, {} ); // $ExpectError
+	mskfilterMap.assign( x, ( x: number ): number => x, [ 0, 0, 0, 0 ], 1, 0, clbk, {} ); // $ExpectError
+}
+
+// The compiler throws an error if the `assign` method is provided a third argument which is not an array-like object...
+{
+	const x = [ 1.0, 2.0, 3.0, 4.0 ];
+	const mask = [ 0.0, 0.0, 0.0, 0.0 ];
+
+	mskfilterMap.assign( x, mask, 3.14, 1, 0, clbk ); // $ExpectError
+	mskfilterMap.assign( x, mask, true, 1, 0, clbk ); // $ExpectError
+	mskfilterMap.assign( x, mask, false, 1, 0, clbk ); // $ExpectError
+	mskfilterMap.assign( x, mask, null, 1, 0, clbk ); // $ExpectError
+	mskfilterMap.assign( x, mask, {}, 1, 0, clbk ); // $ExpectError
+	mskfilterMap.assign( x, mask, ( x: number ): number => x, 1, 0, clbk ); // $ExpectError
+
+	mskfilterMap.assign( x, mask, 3.14, 1, 0, clbk, {} ); // $ExpectError
+	mskfilterMap.assign( x, mask, true, 1, 0, clbk, {} ); // $ExpectError
+	mskfilterMap.assign( x, mask, false, 1, 0, clbk, {} ); // $ExpectError
+	mskfilterMap.assign( x, mask, null, 1, 0, clbk, {} ); // $ExpectError
+	mskfilterMap.assign( x, mask, {}, 1, 0, clbk, {} ); // $ExpectError
+	mskfilterMap.assign( x, mask, ( x: number ): number => x, 1, 0, clbk, {} ); // $ExpectError
+}
+
+// The compiler throws an error if the `assign` method is provided a fourth argument which is not a number...
+{
+	const x = [ 1.0, 2.0, 3.0, 4.0 ];
+	const mask = [ 0.0, 0.0, 0.0, 0.0 ];
+
+	mskfilterMap.assign( x, mask, [ 0, 0, 0, 0 ], 'abc', 0, clbk ); // $ExpectError
+	mskfilterMap.assign( x, mask, [ 0, 0, 0, 0 ], [ 1 ], 0, clbk ); // $ExpectError
+	mskfilterMap.assign( x, mask, [ 0, 0, 0, 0 ], true, 0, clbk ); // $ExpectError
+	mskfilterMap.assign( x, mask, [ 0, 0, 0, 0 ], false, 0, clbk ); // $ExpectError
+	mskfilterMap.assign( x, mask, [ 0, 0, 0, 0 ], null, 0, clbk ); // $ExpectError
+	mskfilterMap.assign( x, mask, [ 0, 0, 0, 0 ], [ '1' ], 0, clbk ); // $ExpectError
+	mskfilterMap.assign( x, mask, [ 0, 0, 0, 0 ], {}, 0, clbk ); // $ExpectError
+	mskfilterMap.assign( x, mask, [ 0, 0, 0, 0 ], ( x: number ): number => x, 0, clbk ); // $ExpectError
+
+	mskfilterMap.assign( x, mask, [ 0, 0, 0, 0 ], 'abc', 0, clbk, {} ); // $ExpectError
+	mskfilterMap.assign( x, mask, [ 0, 0, 0, 0 ], [ 1 ], 0, clbk, {} ); // $ExpectError
+	mskfilterMap.assign( x, mask, [ 0, 0, 0, 0 ], true, 0, clbk, {} ); // $ExpectError
+	mskfilterMap.assign( x, mask, [ 0, 0, 0, 0 ], false, 0, clbk, {} ); // $ExpectError
+	mskfilterMap.assign( x, mask, [ 0, 0, 0, 0 ], null, 0, clbk, {} ); // $ExpectError
+	mskfilterMap.assign( x, mask, [ 0, 0, 0, 0 ], [ '1' ], 0, clbk, {} ); // $ExpectError
+	mskfilterMap.assign( x, mask, [ 0, 0, 0, 0 ], {}, 0, clbk, {} ); // $ExpectError
+	mskfilterMap.assign( x, mask, [ 0, 0, 0, 0 ], ( x: number ): number => x, 0, clbk, {} ); // $ExpectError
+}
+
+// The compiler throws an error if the `assign` method is provided a fifth argument which is not a number...
+{
+	const x = [ 1.0, 2.0, 3.0, 4.0 ];
+	const mask = [ 0.0, 0.0, 0.0, 0.0 ];
+
+	mskfilterMap.assign( x, mask, [ 0, 0, 0, 0 ], 1, 'abc', clbk ); // $ExpectError
+	mskfilterMap.assign( x, mask, [ 0, 0, 0, 0 ], 1, [ 1 ], clbk ); // $ExpectError
+	mskfilterMap.assign( x, mask, [ 0, 0, 0, 0 ], 1, true, clbk ); // $ExpectError
+	mskfilterMap.assign( x, mask, [ 0, 0, 0, 0 ], 1, false, clbk ); // $ExpectError
+	mskfilterMap.assign( x, mask, [ 0, 0, 0, 0 ], 1, null, clbk ); // $ExpectError
+	mskfilterMap.assign( x, mask, [ 0, 0, 0, 0 ], 1, [ '1' ], clbk ); // $ExpectError
+	mskfilterMap.assign( x, mask, [ 0, 0, 0, 0 ], 1, {}, clbk ); // $ExpectError
+	mskfilterMap.assign( x, mask, [ 0, 0, 0, 0 ], 1, ( x: number ): number => x, clbk ); // $ExpectError
+
+	mskfilterMap.assign( x, mask, [ 0, 0, 0, 0 ], 1, 'abc', clbk, {} ); // $ExpectError
+	mskfilterMap.assign( x, mask, [ 0, 0, 0, 0 ], 1, [ 1 ], clbk, {} ); // $ExpectError
+	mskfilterMap.assign( x, mask, [ 0, 0, 0, 0 ], 1, true, clbk, {} ); // $ExpectError
+	mskfilterMap.assign( x, mask, [ 0, 0, 0, 0 ], 1, false, clbk, {} ); // $ExpectError
+	mskfilterMap.assign( x, mask, [ 0, 0, 0, 0 ], 1, null, clbk, {} ); // $ExpectError
+	mskfilterMap.assign( x, mask, [ 0, 0, 0, 0 ], 1, [ '1' ], clbk, {} ); // $ExpectError
+	mskfilterMap.assign( x, mask, [ 0, 0, 0, 0 ], 1, {}, clbk, {} ); // $ExpectError
+	mskfilterMap.assign( x, mask, [ 0, 0, 0, 0 ], 1, ( x: number ): number => x, clbk, {} ); // $ExpectError
+}
+
+// The compiler throws an error if the `assign` method is provided a sixth argument which is not a valid callback...
+{
+	const x = [ 1.0, 2.0, 3.0, 4.0 ];
+	const mask = [ 0.0, 0.0, 0.0, 0.0 ];
+
+	mskfilterMap.assign( x, mask, [ 0, 0, 0, 0 ], 1, 0, 'abc' ); // $ExpectError
+	mskfilterMap.assign( x, mask, [ 0, 0, 0, 0 ], 1, 0, 3.14 ); // $ExpectError
+	mskfilterMap.assign( x, mask, [ 0, 0, 0, 0 ], 1, 0, true ); // $ExpectError
+	mskfilterMap.assign( x, mask, [ 0, 0, 0, 0 ], 1, 0, false ); // $ExpectError
+	mskfilterMap.assign( x, mask, [ 0, 0, 0, 0 ], 1, 0, null ); // $ExpectError
+	mskfilterMap.assign( x, mask, [ 0, 0, 0, 0 ], 1, 0, [ '1' ] ); // $ExpectError
+	mskfilterMap.assign( x, mask, [ 0, 0, 0, 0 ], 1, 0, {} ); // $ExpectError
+
+	mskfilterMap.assign( x, mask, [ 0, 0, 0, 0 ], 1, 0, 'abc', {} ); // $ExpectError
+	mskfilterMap.assign( x, mask, [ 0, 0, 0, 0 ], 1, 0, 3.14, {} ); // $ExpectError
+	mskfilterMap.assign( x, mask, [ 0, 0, 0, 0 ], 1, 0, true, {} ); // $ExpectError
+	mskfilterMap.assign( x, mask, [ 0, 0, 0, 0 ], 1, 0, false, {} ); // $ExpectError
+	mskfilterMap.assign( x, mask, [ 0, 0, 0, 0 ], 1, 0, null, {} ); // $ExpectError
+	mskfilterMap.assign( x, mask, [ 0, 0, 0, 0 ], 1, 0, [ '1' ], {} ); // $ExpectError
+	mskfilterMap.assign( x, mask, [ 0, 0, 0, 0 ], 1, 0, {}, {} ); // $ExpectError
+}
+
+// The compiler throws an error if the `assign` method is provided an unsupported number of arguments...
+{
+	const x = [ 1.0, 2.0, 3.0, 4.0 ];
+	const mask = [ 0.0, 0.0, 0.0, 0.0 ];
+
+	mskfilterMap.assign(); // $ExpectError
+	mskfilterMap.assign( x, mask ); // $ExpectError
+	mskfilterMap.assign( x, mask, [ 0, 0, 0, 0 ] ); // $ExpectError
+	mskfilterMap.assign( x, mask, [ 0, 0, 0, 0 ], 1 ); // $ExpectError
+	mskfilterMap.assign( x, mask, [ 0, 0, 0, 0 ], 1, 0 ); // $ExpectError
+	mskfilterMap.assign( x, mask, [ 0, 0, 0, 0 ], 1, 0, clbk, {}, {} ); // $ExpectError
+}
+
diff --git a/base/mskfilter-map/examples/index.js b/base/mskfilter-map/examples/index.js
new file mode 100644
index 00000000..a4beb442
--- /dev/null
+++ b/base/mskfilter-map/examples/index.js
@@ -0,0 +1,38 @@
+/**
+* @license Apache-2.0
+*
+* Copyright (c) 2024 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 zeroTo = require( './../../../base/zero-to' );
+var bernoulli = require( '@stdlib/random/array/bernoulli' );
+var abs2 = require( '@stdlib/math/base/special/abs2' );
+var mskfilterMap = require( './../lib' );
+
+// Generate a linearly spaced array:
+var x = zeroTo( 20 );
+console.log( x );
+
+// Generate a random mask:
+var mask = bernoulli( x.length, 0.5, {
+	'dtype': 'generic'
+});
+console.log( mask );
+
+// Filter an array using the mask:
+var y = mskfilterMap( x, mask, abs2 );
+console.log( y );
diff --git a/base/mskfilter-map/lib/assign.js b/base/mskfilter-map/lib/assign.js
new file mode 100644
index 00000000..18ebd155
--- /dev/null
+++ b/base/mskfilter-map/lib/assign.js
@@ -0,0 +1,182 @@
+/**
+* @license Apache-2.0
+*
+* Copyright (c) 2024 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 arraylike2object = require( './../../../base/arraylike2object' );
+
+
+// FUNCTIONS //
+
+/**
+* Applies a mask and mapping function to an indexed array and assigns results to elements in an indexed output array.
+*
+* @private
+* @param {Collection} x - input array
+* @param {IntegerArray} mask - mask array
+* @param {Collection} out - output array
+* @param {integer} stride - output array stride
+* @param {NonNegativeInteger} offset - output array offset
+* @param {Function} clbk - function to apply
+* @param {*} [thisArg] - function execution context
+* @returns {Collection} output array
+*
+* @example
+* var x = [ 1, 2, 3, 4 ];
+* var mask = [ 0, 1, 0, 1 ];
+*
+* var out = [ 0, 0, 0, 0 ];
+*
+* function scale( x ) {
+*     return x * 10;
+* }
+*
+* var arr = indexed( x, mask, out, 1, 0, scale );
+* // returns [ 20, 40, 0, 0 ]
+*/
+function indexed( x, mask, out, stride, offset, clbk, thisArg ) {
+	var io;
+	var i;
+
+	io = offset;
+	for ( i = 0; i < x.length; i++ ) {
+		if ( mask[ i ] ) {
+			out[ io ] = clbk.call( thisArg, x[ i ], i, x );
+			io += stride;
+		}
+	}
+	return out;
+}
+
+/**
+* Applies a mask and mapping function to an input accessor array and assigns results to elements in an output accessor array.
+*
+* @private
+* @param {Object} x - input array object
+* @param {Object} mask - mask array object
+* @param {Object} out - output array object
+* @param {integer} stride - output array stride
+* @param {NonNegativeInteger} offset - output array offset
+* @param {Function} clbk - function to apply
+* @param {*} [thisArg] - function execution context
+* @returns {Collection} output array
+*
+* @example
+* var toAccessorArray = require( '@stdlib/array/base/to-accessor-array' );
+* var arraylike2object = require( '@stdlib/array/base/arraylike2object' );
+*
+* var x = toAccessorArray( [ 1, 2, 3, 4 ] );
+* var mask = toAccessorArray( [ 0, 1, 0, 1 ] );
+*
+* function scale( x ) {
+*     return x * 10;
+* }
+*
+* var out = toAccessorArray( [ 0, 0, 0, 0 ] );
+* var arr = accessors( arraylike2object( x ), arraylike2object( mask ), arraylike2object( out ), 1, 0, scale );
+*
+* var v = arr.get( 0 );
+* // returns 20
+*
+* v = arr.get( 1 );
+* // returns 40
+*/
+function accessors( x, mask, out, stride, offset, clbk, thisArg ) {
+	var xdata;
+	var mdata;
+	var odata;
+	var xget;
+	var mget;
+	var oset;
+	var io;
+	var i;
+
+	xdata = x.data;
+	mdata = mask.data;
+	odata = out.data;
+
+	xget = x.accessors[ 0 ];
+	mget = mask.accessors[ 0 ];
+	oset = out.accessors[ 1 ];
+
+	io = offset;
+	for ( i = 0; i < xdata.length; i++ ) {
+		if ( mget( mdata, i ) ) {
+			oset( odata, io, clbk.call( thisArg, xget( xdata, i ), i, xdata ) );
+			io += stride;
+		}
+	}
+	return odata;
+}
+
+
+// MAIN //
+
+/**
+* Applies a mask and mapping function to a provided input array and assigns results to elements in a provided output array.
+*
+* @param {Collection} x - input array
+* @param {Collection} mask - mask array
+* @param {Collection} out - output array
+* @param {integer} stride - output array stride
+* @param {NonNegativeInteger} offset - output array offset
+* @param {Function} clbk - function to apply
+* @param {*} [thisArg] - function execution context
+* @returns {Collection} output array
+*
+* @example
+* var x = [ 1, 2, 3, 4 ];
+* var mask = [ 0, 1, 0, 1 ];
+*
+* function scale( x ) {
+*     return x * 10;
+* }
+*
+* var out = [ 0, 0 ];
+* var arr = assign( x, mask, out, 1, 0, scale );
+* // returns [ 20, 40 ]
+*
+* var bool = ( arr === out );
+* // returns true
+*/
+function assign( x, mask, out, stride, offset, clbk, thisArg ) {
+	var xo;
+	var mo;
+	var oo;
+
+	xo = arraylike2object( x );
+	mo = arraylike2object( mask );
+	oo = arraylike2object( out );
+	if (
+		xo.accessorProtocol ||
+		mo.accessorProtocol ||
+		oo.accessorProtocol
+	) {
+		accessors( xo, mo, oo, stride, offset, clbk, thisArg );
+		return out;
+	}
+	indexed( x, mask, out, stride, offset, clbk, thisArg );
+	return out;
+}
+
+
+// EXPORTS //
+
+module.exports = assign;
diff --git a/base/mskfilter-map/lib/index.js b/base/mskfilter-map/lib/index.js
new file mode 100644
index 00000000..c131c816
--- /dev/null
+++ b/base/mskfilter-map/lib/index.js
@@ -0,0 +1,71 @@
+/**
+* @license Apache-2.0
+*
+* Copyright (c) 2024 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';
+
+/**
+* Apply a mask to a provided input array and return a new array after applying a mapping function.
+*
+* @module @stdlib/array/base/mskfilter-map
+*
+* @example
+* var mskfilterMap = require( '@stdlib/array/base/mskfilter-map' );
+*
+* var x = [ 1, 2, 3, 4 ];
+* var mask = [ 0, 1, 0, 1 ];
+*
+* function scale( val ) {
+*      return 10 * val;
+* }
+*
+* var y = mskfilterMap( x, mask, scale );
+* // returns [ 20, 40 ]
+*
+* @example
+* var mskfilterMap = require( '@stdlib/array/base/mskfilter-map' );
+*
+* var x = [ 1, 2, 3, 4 ];
+* var mask = [ 0, 1, 0, 1 ];
+*
+* function scale( val ) {
+*     return 10 * val;
+* }
+*
+* var out = [ 0, 0 ];
+* var arr = mskfilterMap.assign( x, mask, out, 1, 0, scale );
+* // returns [ 20, 40 ]
+*
+* var bool = ( arr === out );
+* // returns true
+*/
+
+// MODULES //
+
+var setReadOnly = require( '@stdlib/utils/define-nonenumerable-read-only-property' );
+var main = require( './main.js' );
+var assign = require( './assign.js' );
+
+
+// MAIN //
+
+setReadOnly( main, 'assign', assign );
+
+
+// EXPORTS //
+
+module.exports = main;
diff --git a/base/mskfilter-map/lib/main.js b/base/mskfilter-map/lib/main.js
new file mode 100644
index 00000000..71bc7aef
--- /dev/null
+++ b/base/mskfilter-map/lib/main.js
@@ -0,0 +1,71 @@
+/**
+* @license Apache-2.0
+*
+* Copyright (c) 2024 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 resolveGetter = require( './../../../base/resolve-getter' );
+
+
+// MAIN //
+
+/**
+* Apply a mask to a provided input array and returns a new array after applying a mapping function.
+*
+* @param {Collection} x - input array
+* @param {Collection} mask - mask array
+* @param {Function} clbk - callback to invoke
+* @param {*} [thisArg] - execution context
+* @returns {Array} output array
+*
+* @example
+* var x = [ 1, 2, 3, 4 ];
+* var mask = [ 0, 1, 0, 1 ];
+*
+* function scale( val ) {
+*     return 10 * val;
+* }
+*
+* var y = mskfilterMap( x, mask, scale );
+* // returns [ 20, 40 ]
+*/
+function mskfilterMap( x, mask, clbk, thisArg ) {
+	var xget;
+	var mget;
+	var out;
+	var i;
+
+	// Resolve accessors for retrieving array elements:
+	xget = resolveGetter( x );
+	mget = resolveGetter( mask );
+
+	// Extract each desired element from the provided array...
+	out = [];
+	for ( i = 0; i < x.length; i++ ) {
+		if ( mget( mask, i ) ) {
+			out.push( clbk.call( thisArg, xget( x, i ), i, x ) ); // use `Array#push` to ensure "fast" elements
+		}
+	}
+	return out;
+}
+
+
+// EXPORTS //
+
+module.exports = mskfilterMap;
diff --git a/base/mskfilter-map/package.json b/base/mskfilter-map/package.json
new file mode 100644
index 00000000..c0b047cd
--- /dev/null
+++ b/base/mskfilter-map/package.json
@@ -0,0 +1,66 @@
+{
+  "name": "@stdlib/array/base/mskfilter-map",
+  "version": "0.0.0",
+  "description": "Apply a mask to a provided input array.",
+  "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",
+    "utilities",
+    "utils",
+    "generic",
+    "array",
+    "take",
+    "extract",
+    "copy",
+    "index",
+    "mask",
+    "map",
+    "filter",
+    "reject"
+  ]
+}
diff --git a/base/mskfilter-map/test/test.assign.js b/base/mskfilter-map/test/test.assign.js
new file mode 100644
index 00000000..5c75d535
--- /dev/null
+++ b/base/mskfilter-map/test/test.assign.js
@@ -0,0 +1,325 @@
+/**
+* @license Apache-2.0
+*
+* Copyright (c) 2024 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 Complex64Array = require( './../../../complex64' );
+var toAccessorArray = require( './../../../base/to-accessor-array' );
+var reinterpret = require( '@stdlib/strided/base/reinterpret-complex' );
+var Int32Array = require( './../../../int32' );
+var zeros = require( './../../../zeros' );
+var mskfilterMap = require( './../lib' ).assign;
+
+
+// TESTS //
+
+tape( 'main export is a function', function test( t ) {
+	t.ok( true, __filename );
+	t.strictEqual( typeof mskfilterMap, 'function', 'main export is a function' );
+	t.end();
+});
+
+tape( 'the function filters array elements (generic)', function test( t ) {
+	var expected;
+	var actual;
+	var mask;
+	var out;
+	var x;
+
+	x = [ 1, 2, 3, 4 ];
+
+	mask = [ 0, 1, 0, 1 ];
+	out = zeros( 2, 'generic' );
+	actual = mskfilterMap( x, mask, out, 1, 0, clbk );
+	expected = [ 4, 16 ];
+
+	t.strictEqual( actual, out, 'returns expected value' );
+	t.deepEqual( actual, expected, 'returns expected value' );
+
+	mask = [ 0, 0, 0, 0 ];
+	out = zeros( 0, 'generic' );
+	actual = mskfilterMap( x, mask, out, 1, 0, clbk );
+	expected = [];
+
+	t.strictEqual( actual, out, 'returns expected value' );
+	t.deepEqual( actual, expected, 'returns expected value' );
+
+	mask = [ 0, 0, 0, 1 ];
+	out = zeros( 1, 'generic' );
+	actual = mskfilterMap( x, mask, out, 1, 0, clbk );
+	expected = [ 16 ];
+
+	t.strictEqual( actual, out, 'returns expected value' );
+	t.deepEqual( actual, expected, 'returns expected value' );
+
+	mask = [ 1, 1, 1, 1 ];
+	out = zeros( 4, 'generic' );
+	actual = mskfilterMap( x, mask, out, 1, 0, clbk );
+	expected = [ 1, 4, 9, 16 ];
+
+	t.strictEqual( actual, out, 'returns expected value' );
+	t.deepEqual( actual, expected, 'returns expected value' );
+
+	mask = [ 0, 1, 0, 1 ];
+	out = zeros( 4, 'generic' );
+	actual = mskfilterMap( x, mask, out, -2, out.length-1, clbk );
+	expected = [ 0, 16, 0, 4 ];
+
+	t.strictEqual( actual, out, 'returns expected value' );
+	t.deepEqual( actual, expected, 'returns expected value' );
+
+	t.end();
+
+	function clbk( val ) {
+		return val * val;
+	}
+});
+
+tape( 'the function filters array elements (real typed array)', function test( t ) {
+	var expected;
+	var actual;
+	var mask;
+	var out;
+	var x;
+
+	x = new Int32Array( [ 1, 2, 3, 4 ] );
+
+	mask = [ 0, 1, 0, 1 ];
+	out = zeros( 2, 'int32' );
+	actual = mskfilterMap( x, mask, out, 1, 0, clbk );
+	expected = new Int32Array( [ 4, 16 ] );
+
+	t.strictEqual( actual, out, 'returns expected value' );
+	t.deepEqual( actual, expected, 'returns expected value' );
+
+	mask = [ 0, 0, 0, 0 ];
+	out = zeros( 0, 'int32' );
+	actual = mskfilterMap( x, mask, out, 1, 0, clbk );
+	expected = new Int32Array( [] );
+
+	t.strictEqual( actual, out, 'returns expected value' );
+	t.deepEqual( actual, expected, 'returns expected value' );
+
+	mask = [ 0, 0, 0, 1 ];
+	out = zeros( 1, 'int32' );
+	actual = mskfilterMap( x, mask, out, 1, 0, clbk );
+	expected = new Int32Array( [ 16 ] );
+
+	t.strictEqual( actual, out, 'returns expected value' );
+	t.deepEqual( actual, expected, 'returns expected value' );
+
+	mask = [ 1, 1, 1, 1 ];
+	out = zeros( 4, 'int32' );
+	actual = mskfilterMap( x, mask, out, 1, 0, clbk );
+	expected = new Int32Array( [ 1, 4, 9, 16 ] );
+
+	t.strictEqual( actual, out, 'returns expected value' );
+	t.deepEqual( actual, expected, 'returns expected value' );
+
+	mask = [ 0, 1, 0, 1 ];
+	out = zeros( 4, 'int32' );
+	actual = mskfilterMap( x, mask, out, -2, out.length-1, clbk );
+	expected = new Int32Array( [ 0, 16, 0, 4 ] );
+
+	t.strictEqual( actual, out, 'returns expected value' );
+	t.deepEqual( actual, expected, 'returns expected value' );
+
+	t.end();
+
+	function clbk( val ) {
+		return val * val;
+	}
+});
+
+tape( 'the function filters array elements (complex typed array)', function test( t ) {
+	var expected;
+	var actual;
+	var mask;
+	var out;
+	var x;
+
+	x = reinterpret(new Complex64Array( [ 1.0, 2.0, 3.0, 4.0 ] ) );
+
+	mask = [ 1, 0 ];
+	out = reinterpret( zeros( 1, 'complex64' ) );
+	actual = mskfilterMap( x, mask, out, 1, 0, clbk );
+	expected = reinterpret( new Complex64Array( [ 1.0, 4.0, 25.0, 36.0 ] ) );
+
+	t.strictEqual( actual, out, 'returns expected value' );
+	isEqual( actual, expected );
+
+	mask = [ 0, 0 ];
+	out = reinterpret( zeros( 0, 'complex64' ) );
+	actual = mskfilterMap( x, mask, out, 1, 0, clbk );
+	expected = reinterpret( new Complex64Array( [] ) );
+
+	t.strictEqual( actual, out, 'returns expected value' );
+	isEqual( actual, expected );
+
+	mask = [ 0, 1 ];
+	out = reinterpret( zeros( 1, 'complex64' ) );
+	actual = mskfilterMap( x, mask, out, 1, 0, clbk );
+	expected = reinterpret( new Complex64Array( [ 9.0, 16.0 ] ) );
+
+	t.strictEqual( actual, out, 'returns expected value' );
+	isEqual( actual, expected );
+
+	mask = [ 1, 1 ];
+	out = reinterpret( zeros( 3, 'complex64' ) );
+	actual = mskfilterMap( x, mask, out, 1, 0, clbk );
+	expected = reinterpret( new Complex64Array( [ 1.0, 4.0, 9.0, 16.0 ] ) );
+
+	t.strictEqual( actual, out, 'returns expected value' );
+	isEqual( actual, expected );
+
+	mask = [ 1, 0 ];
+	out = reinterpret( zeros( 3, 'complex64' ) );
+	actual = mskfilterMap( x, mask, out, -2, out.length-1, clbk );
+	expected = reinterpret( new Complex64Array( [ 0.0, 0.0, 1.0, 4.0 ] ) );
+
+	t.strictEqual( actual, out, 'returns expected value' );
+	isEqual( actual, expected );
+
+	t.end();
+
+	function isEqual( actual, expected ) {
+		var i;
+		for ( i = 0; i < expected.length; i++ ) {
+			t.strictEqual( actual.get( i ), expected[ i ], 'returns expected value' );
+		}
+	}
+
+	function clbk( val ) {
+		return val * val;
+	}
+});
+
+tape( 'the function filters array elements (accessors)', function test( t ) {
+	var expected;
+	var actual;
+	var mask;
+	var out;
+	var x;
+
+	x = toAccessorArray( [ 1, 2, 3, 4 ] );
+
+	mask = toAccessorArray( [ 0, 1, 0, 1 ] );
+	out = toAccessorArray( zeros( 2, 'generic' ) );
+	actual = mskfilterMap( x, mask, out, 1, 0, clbk );
+	expected = [ 4, 16 ];
+
+	t.strictEqual( actual, out, 'returns expected value' );
+	isEqual( actual, expected );
+
+	mask = toAccessorArray( [ 0, 0, 0, 0 ] );
+	out = toAccessorArray( zeros( 0, 'generic' ) );
+	actual = mskfilterMap( x, mask, out, 1, 0, clbk );
+	expected = [];
+
+	t.strictEqual( actual, out, 'returns expected value' );
+	isEqual( actual, expected );
+
+	mask = toAccessorArray( [ 0, 0, 0, 1 ] );
+	out = toAccessorArray( zeros( 1, 'generic' ) );
+	actual = mskfilterMap( x, mask, out, 1, 0, clbk );
+	expected = [ 16 ];
+
+	t.strictEqual( actual, out, 'returns expected value' );
+	isEqual( actual, expected );
+
+	mask = toAccessorArray( [ 1, 1, 1, 1 ] );
+	out = toAccessorArray( zeros( 4, 'generic' ) );
+	actual = mskfilterMap( x, mask, out, 1, 0, clbk );
+	expected = [ 1, 4, 9, 16 ];
+
+	t.strictEqual( actual, out, 'returns expected value' );
+	isEqual( actual, expected );
+
+	mask = toAccessorArray( [ 0, 1, 0, 1 ] );
+	out = toAccessorArray( zeros( 4, 'generic' ) );
+	actual = mskfilterMap( x, mask, out, -2, out.length-1, clbk );
+	expected = [ 0, 16, 0, 4 ];
+
+	t.strictEqual( actual, out, 'returns expected value' );
+	isEqual( actual, expected );
+
+	t.end();
+
+	function isEqual( actual, expected ) {
+		var i;
+		for ( i = 0; i < expected.length; i++ ) {
+			t.strictEqual( actual.get( i ), expected[ i ], 'returns expected value' );
+		}
+	}
+
+	function clbk( val ) {
+		return val * val;
+	}
+});
+
+tape( 'the function returns leaves an output array unchanged if provided a second argument having all element equal to zero ', function test( t ) {
+	var expected;
+	var actual;
+	var mask;
+	var out;
+	var x;
+
+	mask = [ 0, 0, 0, 0 ];
+
+	x = [ 1, 2, 3, 4 ];
+	out = [ 0, 0, 0, 0 ];
+	expected = [ 0, 0, 0, 0 ];
+	actual = mskfilterMap( x, mask, out, 1, 0, clbk );
+	t.deepEqual( actual, expected, 'returns expected value' );
+
+	x = toAccessorArray( [ 1, 2, 3, 4 ] );
+	out = [ 0, 0, 0, 0 ];
+	expected = [ 0, 0, 0, 0 ];
+	actual = mskfilterMap( x, mask, out, 1, 0, clbk );
+	t.deepEqual( actual, expected, 'returns expected value' );
+
+	x = new Int32Array( [ 1.0, 2.0, 3.0, 4.0 ] );
+	out = [ 0, 0, 0, 0 ];
+	expected = [ 0, 0, 0, 0 ];
+	actual = mskfilterMap( x, mask, out, 1, 0, clbk );
+	t.deepEqual( actual, expected, 'returns expected value' );
+
+	mask = [ 0, 0 ];
+
+	x = reinterpret( new Complex64Array( [ 1.0, 2.0, 3.0, 4.0 ] ) );
+	out = reinterpret( new Complex64Array( [ 0.0, 0.0, 0.0, 0.0 ] ) );
+	expected = reinterpret( new Complex64Array( [ 0.0, 0.0, 0.0, 0.0 ] ) );
+	actual = mskfilterMap( x, mask, out, 1, 0, clbk );
+	isEqual( actual, expected );
+
+	t.end();
+
+	function isEqual( actual, expected ) {
+		var i;
+		for ( i = 0; i < expected.length; i++ ) {
+			t.strictEqual( actual.get( i ), expected[ i ], 'returns expected value' );
+		}
+	}
+
+	function clbk( val ) {
+		return val * val;
+	}
+});
diff --git a/base/mskfilter-map/test/test.js b/base/mskfilter-map/test/test.js
new file mode 100644
index 00000000..028b9f7e
--- /dev/null
+++ b/base/mskfilter-map/test/test.js
@@ -0,0 +1,41 @@
+/**
+* @license Apache-2.0
+*
+* Copyright (c) 2024 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 hasOwnProp = require( '@stdlib/assert/has-own-property' );
+var hasMethod = require( '@stdlib/assert/is-method' );
+var mskfilterMap = require( './../lib' );
+
+
+// TESTS //
+
+tape( 'main export is a function', function test( t ) {
+	t.ok( true, __filename );
+	t.strictEqual( typeof mskfilterMap, 'function', 'main export is a function' );
+	t.end();
+});
+
+tape( 'attached to the main export is an `assign` method', function test( t ) {
+	t.strictEqual( hasOwnProp( mskfilterMap, 'assign' ), true, 'returns expected value' );
+	t.strictEqual( hasMethod( mskfilterMap, 'assign' ), true, 'returns expected value' );
+	t.end();
+});
diff --git a/base/mskfilter-map/test/test.main.js b/base/mskfilter-map/test/test.main.js
new file mode 100644
index 00000000..18c18371
--- /dev/null
+++ b/base/mskfilter-map/test/test.main.js
@@ -0,0 +1,158 @@
+/**
+* @license Apache-2.0
+*
+* Copyright (c) 2024 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 Complex64Array = require( './../../../complex64' );
+var isSameComplex64 = require( '@stdlib/assert/is-same-complex64' );
+var isArray = require( '@stdlib/assert/is-array' );
+var mskfilterMap = require( './../lib' );
+
+
+// TESTS //
+
+tape( 'main export is a function', function test( t ) {
+	t.ok( true, __filename );
+	t.strictEqual( typeof mskfilterMap, 'function', 'main export is a function' );
+	t.end();
+});
+
+tape( 'the function filters array elements', function test( t ) {
+	var expected;
+	var actual;
+	var mask;
+	var x;
+
+	x = [ 1, 2, 3, 4 ];
+
+	mask = [ 0, 1, 0, 1 ];
+	actual = mskfilterMap( x, mask, clbk );
+	expected = [ 4, 16 ];
+	t.strictEqual( isArray( actual ), true, 'returns expected value' );
+	t.notEqual( actual, x, 'returns new array' );
+	t.deepEqual( actual, expected, 'returns expected value' );
+
+	mask = [ 0, 0, 0, 0 ];
+	actual = mskfilterMap( x, mask, clbk );
+	expected = [];
+	t.strictEqual( isArray( actual ), true, 'returns expected value' );
+	t.notEqual( actual, x, 'returns new array' );
+	t.deepEqual( actual, expected, 'returns expected value' );
+
+	mask = [ 0, 0, 0, 1 ];
+	actual = mskfilterMap( x, mask, clbk );
+	expected = [ 16 ];
+	t.strictEqual( isArray( actual ), true, 'returns expected value' );
+	t.notEqual( actual, x, 'returns new array' );
+	t.deepEqual( actual, expected, 'returns expected value' );
+
+	mask = [ 1, 1, 1, 1 ];
+	actual = mskfilterMap( x, mask, clbk );
+	expected = [ 1, 4, 9, 16 ];
+	t.strictEqual( isArray( actual ), true, 'returns expected value' );
+	t.notEqual( actual, x, 'returns new array' );
+	t.deepEqual( actual, expected, 'returns expected value' );
+
+	t.end();
+
+	function clbk( val ) {
+		return val * val;
+	}
+});
+
+tape( 'the function filters array elements (accessors)', function test( t ) {
+	var expected;
+	var actual;
+	var mask;
+	var x;
+	var i;
+
+	x = new Complex64Array( [ 1.0, 2.0, 3.0, 4.0, 5.0, 6.0, 7.0, 8.0 ] );
+	mask = [ 0, 1, 0, 1 ];
+	actual = mskfilterMap( x, mask, clbk );
+	expected = [ x.get( 1 ), x.get( 3 ) ];
+
+	t.strictEqual( isArray( actual ), true, 'returns expected value' );
+	t.notEqual( actual, x, 'returns different reference' );
+	for ( i = 0; i < expected.length; i++ ) {
+		t.strictEqual( isSameComplex64( actual[ i ], expected[ i ] ), true, 'returns expected value' );
+	}
+	t.end();
+
+	function clbk( val ) {
+		return val;
+	}
+});
+
+tape( 'the function returns an empty array if provided empty arrays', function test( t ) {
+	t.deepEqual( mskfilterMap( [], [], clbk ), [], 'returns expected value' );
+	t.end();
+
+	function clbk( val ) {
+		return val * val;
+	}
+});
+
+tape( 'the function supports providing a function execution context', function test( t ) {
+	var expected;
+	var indices;
+	var values;
+	var arrays;
+	var mask;
+	var out;
+	var ctx;
+	var x;
+
+	values = [];
+	indices = [];
+	arrays = [];
+
+	x = [ 1.0, 2.0, 3.0, 4.0 ];
+	mask = [ 1, 1, 1, 1 ];
+
+	ctx = {
+		'count': 0
+	};
+	out = mskfilterMap( x, mask, clbk, ctx );
+
+	expected = [ 1.0, 2.0, 3.0, 4.0];
+	t.deepEqual( out, expected, 'returns expected value' );
+	t.strictEqual( ctx.count, 4, 'returns expected value' );
+
+	expected = [ 1.0, 2.0, 3.0, 4.0 ];
+	t.deepEqual( values, expected, 'returns expected value' );
+
+	expected = [ 0, 1, 2, 3	];
+	t.deepEqual( indices, expected, 'returns expected value' );
+
+	expected = [ x, x, x, x	];
+	t.deepEqual( arrays, expected, 'returns expected value' );
+
+	t.end();
+
+	function clbk( value, idx, array ) {
+		values.push( value );
+		indices.push( idx );
+		arrays.push( array );
+		ctx.count += 1;
+		return value;
+	}
+});