Native Function

Regular expression to match a native function.

Usage

var reNativeFunction = require( '@stdlib/regexp/native-function' );

reNativeFunction()

Returns a regular expression to match a native function.

var RE_NATIVE_FUNCTION = reNativeFunction();
var bool = RE_NATIVE_FUNCTION.test( Date.toString() );
// returns true

reNativeFunction.REGEXP

Regular expression to match a native function.

var bool = reNativeFunction.REGEXP.test( Date.toString() );
// returns true

Examples

var Int8Array = require( '@stdlib/array/int8' );
var reNativeFunction = require( '@stdlib/regexp/native-function' );

var RE_NATIVE_FUNCTION = reNativeFunction();
function isNativeFunction( fcn ) {
    return RE_NATIVE_FUNCTION.test( fcn.toString() );
}

var bool = isNativeFunction( Math.sqrt );
// returns true

bool = isNativeFunction( String );
// returns true

bool = isNativeFunction( Int8Array );
// returns true

bool = isNativeFunction( Date );
// returns true

bool = isNativeFunction( function noop() {} );
// returns false