kind-of

$ npm install --save kind-of

$ bower install kind-of --save

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('str');
//=> 'string'

kindOf(new String('str'));
//=> 'string'

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

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

kindOf(Object.create(null));
//=> 'object'

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

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

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

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

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

kindOf(/foo/);
//=> 'regexp'

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

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

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

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

kindOf(new Map());
//=> 'map'

kindOf(new WeakMap());
//=> 'weakmap'

kindOf(new Set());
//=> 'set'

kindOf(new WeakSet());
//=> 'weakset'

kindOf(Symbol('str'));
//=> 'symbol'

kindOf(new Int8Array());
//=> 'int8array'

kindOf(new Uint8Array());
//=> 'uint8array'

kindOf(new Uint8ClampedArray());
//=> 'uint8clampedarray'

kindOf(new Int16Array());
//=> 'int16array'

kindOf(new Uint16Array());
//=> 'uint16array'

kindOf(new Int32Array());
//=> 'int32array'

kindOf(new Uint32Array());
//=> 'uint32array'

kindOf(new Float32Array());
//=> 'float32array'

kindOf(new Float64Array());
//=> 'float64array'

#1: array
  current x 23,329,397 ops/sec ±0.82% (94 runs sampled)
  lib-type-of x 4,170,273 ops/sec ±0.55% (94 runs sampled)
  lib-typeof x 9,686,935 ops/sec ±0.59% (98 runs sampled)

#2: boolean
  current x 27,197,115 ops/sec ±0.85% (94 runs sampled)
  lib-type-of x 3,145,791 ops/sec ±0.73% (97 runs sampled)
  lib-typeof x 9,199,562 ops/sec ±0.44% (99 runs sampled)

#3: date
  current x 20,190,117 ops/sec ±0.86% (92 runs sampled)
  lib-type-of x 5,166,970 ops/sec ±0.74% (94 runs sampled)
  lib-typeof x 9,610,821 ops/sec ±0.50% (96 runs sampled)

#4: function
  current x 23,855,460 ops/sec ±0.60% (97 runs sampled)
  lib-type-of x 5,667,740 ops/sec ±0.54% (100 runs sampled)
  lib-typeof x 10,010,644 ops/sec ±0.44% (100 runs sampled)

#5: null
  current x 27,061,047 ops/sec ±0.97% (96 runs sampled)
  lib-type-of x 13,965,573 ops/sec ±0.62% (97 runs sampled)
  lib-typeof x 8,460,194 ops/sec ±0.61% (97 runs sampled)

#6: number
  current x 25,075,682 ops/sec ±0.53% (99 runs sampled)
  lib-type-of x 2,266,405 ops/sec ±0.41% (98 runs sampled)
  lib-typeof x 9,821,481 ops/sec ±0.45% (99 runs sampled)

#7: object
  current x 3,348,980 ops/sec ±0.49% (99 runs sampled)
  lib-type-of x 3,245,138 ops/sec ±0.60% (94 runs sampled)
  lib-typeof x 9,262,952 ops/sec ±0.59% (99 runs sampled)

#8: regex
  current x 21,284,827 ops/sec ±0.72% (96 runs sampled)
  lib-type-of x 4,689,241 ops/sec ±0.43% (100 runs sampled)
  lib-typeof x 8,957,593 ops/sec ±0.62% (98 runs sampled)

#9: string
  current x 25,379,234 ops/sec ±0.58% (96 runs sampled)
  lib-type-of x 3,635,148 ops/sec ±0.76% (93 runs sampled)
  lib-typeof x 9,494,134 ops/sec ±0.49% (98 runs sampled)

#10: undef
  current x 27,459,221 ops/sec ±1.01% (93 runs sampled)
  lib-type-of x 14,360,433 ops/sec ±0.52% (99 runs sampled)
  lib-typeof x 23,202,868 ops/sec ±0.59% (94 runs sampled)

$ npm install -g verbose/verb#dev verb-generate-readme && verb

$ npm install && npm test