feat: add number/float32/reviver

lib/node_modules/@stdlib/number/float32/reviver/README.md

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+<!--
+
+@license Apache-2.0
+
+Copyright (c) 2026 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.
+
+-->
+
+# reviveNumber
+
+> Revive a JSON-serialized number.
+
+<!-- Section to include introductory text. Make sure to keep an empty line after the intro `section` element and another before the `/section` close. -->
+
+<section class="intro">
+
+</section>
+
+<!-- /.intro -->
+
+<!-- Package usage documentation. -->
+
+<section class="usage">
+
+## Usage
+
+```javascript
+var reviveNumber = require( '@stdlib/number/float32/reviver' );
+```
+
+#### reviveNumber( key, value )
+
+Revives a JSON-serialized number.
+
+```javascript
+var parseJSON = require( '@stdlib/utils/parse-json' );
+
+var str = '{"type":"float32","value":"NaN"}';
+
+var buf = parseJSON( str, reviveNumber );
+// returns NaN
+```
+
+For details on the JSON serialization format, see [`@stdlib/number/float32/to-json`][@stdlib/number/float32/to-json].
+
+</section>
+
+<!-- /.usage -->
+
+<!-- Package usage notes. Make sure to keep an empty line after the `section` element and another before the `/section` close. -->
+
+<section class="notes">
+
+</section>
+
+<!-- /.notes -->
+
+<!-- Package usage examples. -->
+
+<section class="examples">
+
+## Examples
+
+<!-- eslint no-undef: "error" -->
+
+```javascript
+var parseJSON = require( '@stdlib/utils/parse-json' );
+var number2jsonf = require( '@stdlib/number/float32/to-json' );
+var reviveNumber = require( '@stdlib/number/float32/reviver' );
+
+var str = JSON.stringify( number2jsonf( NaN ) );
+console.log( str );
+// => '{"type":"float32","value":"NaN"}'
+
+var out = parseJSON( str, reviveNumber );
+if ( out instanceof Error ) {
+    throw out;
+}
+console.log( out );
+// => NaN
+```
+
+</section>
+
+<!-- /.examples -->
+
+<!-- Section to include cited references. If references are included, add a horizontal rule *before* the section. Make sure to keep an empty line after the `section` element and another before the `/section` close. -->
+
+<section class="references">
+
+</section>
+
+<!-- /.references -->
+
+<!-- Section for related `stdlib` packages. Do not manually edit this section, as it is automatically populated. -->
+
+<section class="related">
+
+* * *
+
+## See Also
+
+-   <span class="package-name">[`@stdlib/number/float64/to-json`][@stdlib/number/float32/to-json]</span><span class="delimiter">: </span><span class="description">return a JSON representation of a number.</span>
+
+</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">
+
+[@stdlib/number/float32/to-json]: https://github.com/stdlib-js/stdlib/tree/develop/lib/node_modules/%40stdlib/number/float32/to-json
+
+</section>
+
+<!-- /.links -->

lib/node_modules/@stdlib/number/float32/reviver/benchmark/benchmark.js

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+/**
+* @license Apache-2.0
+*
+* Copyright (c) 2026 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 parseJSON = require( '@stdlib/utils/parse-json' );
+var number2jsonf = require( '@stdlib/number/float32/to-json' );
+var pkg = require( './../package.json' ).name;
+var reviver = require( './../lib' );
+
+
+// MAIN //
+
+bench( pkg, function benchmark( b ) {
+	var values = [ '{"type":"float32","value":"NaN"}', '{"type":"float32","value":"Infinity"}', '{"type":"float32","value":"-Infinity"}'];
+	var o;
+	var i;
+
+	b.tic();
+	for ( i = 0; i < b.iterations; i++ ) {
+		o = parseJSON( values[ i%values.length ], reviver );
+		if ( o instanceof Error ) {
+			b.fail( 'should not return an error' );
+		}
+	}
+	b.toc();
+
+	if ( o instanceof Error ) {
+		b.fail( 'should not return an error' );
+	}
+	b.pass( 'benchmark finished' );
+	b.end();
+});
+
+bench( pkg+'::number', function benchmark( b ) {
+	var str;
+	var o;
+	var i;
+	b.tic();
+	for ( i = 0; i < b.iterations; i++ ) {
+		str = JSON.stringify( number2jsonf( 3.14 ) );
+		o = parseJSON( str, reviver );
+		if ( o instanceof Error ) {
+			b.fail( 'should not return an error' );
+		}
+	}
+	b.toc();
+
+	if ( o instanceof Error ) {
+		b.fail( 'should not return an error' );
+	}
+	b.pass( 'benchmark finished' );
+	b.end();
+});

lib/node_modules/@stdlib/number/float32/reviver/docs/repl.txt

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+
+{{alias}}( key, value )
+    Revives a JSON-serialized number.
+
+    The serialization format for a numberis a number itself
+    Or can have a object having the following
+    fields:
+
+    - type: value type (float32).
+    - value: 'NaN' or '+Infinity' or '-Infinity'.
+
+    Parameters
+    ----------
+    key: string
+        Key.
+
+    value: any
+        Value.
+
+    Returns
+    -------
+    out: any
+        Value.
+
+    Examples
+    --------
+    > var str = '{"type":"float32","value":"NaN"}';
+    > var out = {{alias:@stdlib/utils/parse-json}}( str, {{alias}} )
+    NaN
+    > str = '{"type":"float32","value":"+Infinity"}';
+    > out = {{alias:@stdlib/utils/parse-json}}( str, {{alias}} )
+    Infinity
+    > str = '{"type":"float32","value":"-Infinity"}';
+    > out = {{alias:@stdlib/utils/parse-json}}( str, {{alias}} )
+    -Infinity
+
+    See Also
+    --------

lib/node_modules/@stdlib/number/float32/reviver/docs/types/index.d.ts

@@ -0,0 +1,41 @@
+/*
+* @license Apache-2.0
+*
+* Copyright (c) 2026 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
+
+/**
+* Revives a JSON-serialized number.
+*
+* @param key - key
+* @param value - value
+* @returns value
+*
+* @example
+* var parseJSON = require( '@stdlib/utils/parse-json' );
+*
+* var str = '{"type":"float32","value":"NaN"}';
+*
+* var out = parseJSON( str, reviveNumber );
+* // returns NaN
+*/
+declare function reviveNumber( key: string, value: any ): any;
+
+
+// EXPORTS //
+
+export = reviveNumber;

lib/node_modules/@stdlib/number/float32/reviver/docs/types/test.ts

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+/*
+* @license Apache-2.0
+*
+* Copyright (c) 2026 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 reviveNumber = require( '../../lib/main' );
+
+
+// TESTS //
+
+// The function revives a JSON-serialized number...
+{
+	const o = {
+		'type': 'float64',
+		'value': 'NaN'
+	};
+	reviveNumber( 'key', o ); // $ExpectType any
+}
+
+// The compiler throws an error if the function is provided a first argument that is not a string or number...
+{
+	reviveNumber( true, 1 ); // $ExpectError
+	reviveNumber( false, 1 ); // $ExpectError
+	reviveNumber( null, 1 ); // $ExpectError
+	reviveNumber( undefined, 1 ); // $ExpectError
+	reviveNumber( [], 1 ); // $ExpectError
+	reviveNumber( {}, 1 ); // $ExpectError
+}
+
+// The compiler throws an error if the function is provided insufficient arguments...
+{
+	reviveNumber(); // $ExpectError
+	reviveNumber( 'foo' ); // $ExpectError
+}

lib/node_modules/@stdlib/number/float32/reviver/examples/index.js

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+/**
+* @license Apache-2.0
+*
+* Copyright (c) 2026 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 parseJSON = require( '@stdlib/utils/parse-json' );
+var number2jsonf = require( '@stdlib/number/float32/to-json' );
+var PINF = require( '@stdlib/constants/float32/pinf' );
+var NINF = require( '@stdlib/constants/float32/ninf' );
+var reviver = require( './../lib' );
+
+var str = JSON.stringify( number2jsonf( PINF ) );
+console.log( str );
+// => '{"type":"float32","value":"+Infinity"}'
+
+var out = parseJSON( str, reviver );
+if ( out instanceof Error ) {
+	throw out;
+}
+console.log( out );
+// => Infinity
+
+str = JSON.stringify( number2jsonf( NINF ) );
+console.log( str );
+// => '{"type":"float32","value":"-Infinity"}'
+
+out = parseJSON( str, reviver );
+if ( out instanceof Error ) {
+	throw out;
+}
+console.log( out );
+// => -Infinity
+
+str = JSON.stringify( number2jsonf( NaN ) );
+console.log( str );
+// => '{"type":"float32","value":"NaN"}'
+
+out = parseJSON( str, reviver );
+if ( out instanceof Error ) {
+	throw out;
+}
+console.log( out );
+// => NaN