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Make is.number(NaN) return false (#90)

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Co-authored-by: Sindre Sorhus <sindresorhus@gmail.com>
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Kai Niedziela 2019-06-30 10:09:07 +02:00 • committed by Sindre Sorhus
parent ffc6ce4586
commit f04dffa575
3 changed files with 9 additions and 3 deletions
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@ -68,6 +68,9 @@ All the below methods accept a value and returns a boolean for whether the value
##### .null(value)
##### .string(value)
##### .number(value)
Note: `is.number(NaN)` returns `false`. This intentionally deviates from `typeof` behavior to increase user-friendliness of `is` type checks.
##### .boolean(value)
##### .symbol(value)
##### .bigint(value)
@ -83,7 +86,7 @@ Keep in mind that [functions are objects too](https://developer.mozilla.org/en-U
##### .numericString(value)
Returns `true` for a string that represents a number. For example, `'42'` and `'-8'`.
Returns `true` for a string that represents a number satisfying `is.number`, for example, `'42'` and `'-8.3'`.
Note: `'NaN'` returns `false`, but `'Infinity'` and `'-Infinity'` return `true`.