Package Exports

kind-of

This package does not declare an exports field, so the exports above have been automatically detected and optimized by JSPM instead. If any package subpath is missing, it is recommended to post an issue to the original package (kind-of) to support the "exports" field. If that is not possible, create a JSPM override to customize the exports field for this package.

Readme

kind-of

Get the native type of a value.

Install with npm

npm i kind-of --save

Usage

var kindOf = require('kind-of');

kindOf(undefined);
//=> 'undefined'

kindOf(null);
//=> 'null'

kindOf(true);
//=> 'boolean'

kindOf(false);
//=> 'boolean'

kindOf(new Boolean(true));
//=> 'boolean'

kindOf(new Buffer(''));
//=> 'buffer'

kindOf(42);
//=> 'number'

kindOf(new Number(42));
//=> 'number'

kindOf("string");
//=> 'string'

kindOf(arguments);
//=> 'arguments'

kindOf({});
//=> 'object'

kindOf(new Test());
//=> 'object'

kindOf(new Date());
//=> 'date'

kindOf([]);
//=> 'array'

kindOf([1, 2, 3]);
//=> 'array'

kindOf(new Array());
//=> 'array'

kindOf(/[\s\S]+/);
//=> 'regexp'

kindOf(new RegExp('^' + 'foo$'));
//=> 'regexp'

kindOf(function () {});
//=> 'function'

kindOf(new Function());
//=> 'function'

Run tests

Install dev dependencies:

npm i -d && npm test

Benchmarks

Benchmarked against typeof and type-of.

#1: array.js
  kind-of x 21,578,944 ops/sec ±1.01% (97 runs sampled)
  (lib) type-of x 4,593,840 ops/sec ±0.76% (92 runs sampled)
  (lib) typeof x 5,786,776 ops/sec ±0.71% (97 runs sampled)

#2: boolean.js
  kind-of x 25,189,600 ops/sec ±0.60% (97 runs sampled)
  (lib) type-of x 2,751,076 ops/sec ±0.78% (100 runs sampled)
  (lib) typeof x 4,390,312 ops/sec ±0.61% (99 runs sampled)

#3: date.js
  kind-of x 8,862,303 ops/sec ±0.77% (99 runs sampled)
  (lib) type-of x 6,239,662 ops/sec ±0.67% (94 runs sampled)
  (lib) typeof x 6,180,922 ops/sec ±0.59% (97 runs sampled)

#4: function.js
  kind-of x 19,685,336 ops/sec ±1.67% (95 runs sampled)
  (lib) type-of x 6,648,551 ops/sec ±0.93% (95 runs sampled)
  (lib) typeof x 6,631,967 ops/sec ±1.05% (92 runs sampled)

#5: null.js
  kind-of x 24,155,010 ops/sec ±0.95% (91 runs sampled)
  (lib) type-of x 12,854,583 ops/sec ±0.69% (94 runs sampled)
  (lib) typeof x 8,182,952 ops/sec ±0.48% (99 runs sampled)

#6: number.js
  kind-of x 20,993,521 ops/sec ±0.37% (98 runs sampled)
  (lib) type-of x 2,112,716 ops/sec ±0.73% (96 runs sampled)
  (lib) typeof x 4,492,943 ops/sec ±0.68% (96 runs sampled)

#7: object.js
  kind-of x 3,686,169 ops/sec ±0.85% (96 runs sampled)
  (lib) type-of x 3,661,833 ops/sec ±0.73% (98 runs sampled)
  (lib) typeof x 6,159,847 ops/sec ±0.72% (98 runs sampled)

#8: regex.js
  kind-of x 10,780,535 ops/sec ±0.75% (95 runs sampled)
  (lib) type-of x 5,380,781 ops/sec ±0.83% (92 runs sampled)
  (lib) typeof x 5,852,558 ops/sec ±0.67% (95 runs sampled)

#9: string.js
  kind-of x 19,713,570 ops/sec ±0.69% (91 runs sampled)
  (lib) type-of x 4,017,753 ops/sec ±0.85% (98 runs sampled)
  (lib) typeof x 4,370,984 ops/sec ±0.62% (100 runs sampled)

#10: undef.js
  kind-of x 23,250,387 ops/sec ±0.88% (91 runs sampled)
  (lib) type-of x 13,725,183 ops/sec ±0.62% (91 runs sampled)
  (lib) typeof x 20,549,334 ops/sec ±0.74% (97 runs sampled)

Author

Jon Schlinkert

License

This file was generated by verb on February 09, 2015.