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Type checking and DDD for JavaScript
github.com/gcanti/tcomb
gcanti/tcomb
tcomb
/
lib
/
isNumber.js
3 lines
•
102 B
JavaScript
View Raw
1
2
3
module
.
exports
=
function
isNumber
(
x
) {
return
typeof
x ===
'number'
&&
isFinite
(x) && !
isNaN
(x); };