stdlib-js
<summary>
About stdlib...
</summary>
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Function Name
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Determine a function's name.
bash
npm install @stdlib/utils-function-name
javascript
var functionName = require( '@stdlib/utils-function-name' );
#### functionName( fcn )
Returns the name of a function.
javascript
var v = functionName( Math.sqrt );
// returns 'sqrt'
If provided an anonymous function, the function returns an empty string or the string "anonymous".
javascript
var v = functionName( function () {} );
// returns '' || 'anonymous'
If provided a value which is not a function, the function throws a TypeError.
javascript
try {
functionName( 'beep' );
// throws error...
} catch ( err ) {
console.error( err );
}
javascript
var Float64Array = require( '@stdlib/array-float64' );
var Buffer = require( '@stdlib/buffer-ctor' );
var Number = require( '@stdlib/number-ctor' );
var Boolean = require( '@stdlib/boolean-ctor' );
var Function = require( '@stdlib/function-ctor' );
var functionName = require( '@stdlib/utils-function-name' );
var v = functionName( Math.sqrt );
// returns 'sqrt'
v = functionName( Float64Array );
// returns 'Float64Array'
v = functionName( Buffer );
// returns 'Buffer'
v = functionName( Date );
// returns 'Date'
v = functionName( String );
// returns 'String'
v = functionName( Boolean );
// returns 'Boolean'
v = functionName( Function );
// returns 'Function'
v = functionName( Number );
// returns 'Number'
v = functionName( function foo() {} );
// returns 'foo'
v = functionName( function () {} );
// returns '' || 'anonymous'
@stdlib/utils-constructor-name][@stdlib/utils/constructor-name]: determine the name of a value's constructor.
