Note
Segment has paused maintenance on this project, but may return it to an active status in the future. Issues and pull requests from external contributors are not being considered, although internal contributions may appear from time to time. The project remains available under its open source license for anyone to use.
compare values of any type for equility
With your favorite package manager:
then in your app:
var equal = require('equals')
equal
takes as many arguments as you like of any type you like and returns a boolean result. Primitive types are equal if they are ===
. While composite types, i.e. Objects and Arrays, are considered equal if they have both the same structure and each sub-value is also equal
. Circular references in composite structures are supported.
Same structure:
equal(
{ a : [ 2, 3 ], b : [ 4 ] },
{ a : [ 2, 3 ], b : [ 4 ] }
) // => true
Different Structure:
equal(
{ x : 5, y : [6] },
{ x : 5}
) // => false
Same structure, different values:
equal(
{ a: [ 1, 2 ], b : [ 4 ]},
{ a: [ 2, 3 ], b : [ 4 ]}
) // => false
Primitives:
equal(new Date(0), new Date(1)) // => false
Some possible gotchas:
null
is not equal toundefined
.NaN
is equal toNaN
(normally not the case).-0
is equal to+0
.- Strings will not coerce to numbers.
- Non enumerable properties will not be checked. They can't be.
arguments.callee
is not considered when comparing arguments