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Add is.even() and is.odd() (#23)

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Brandon Smith 2017-10-17 11:36:10 -04:00 • committed by Sindre Sorhus
parent 00974a2fe9
commit 615932d6c2
3 changed files with 32 additions and 0 deletions
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index.js
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@ -179,6 +179,10 @@ is.domElement = x => is.object(x) && x.nodeType === NODE_TYPE_ELEMENT && is.stri
is.infinite = x => x === Infinity || x === -Infinity;
const isAbsoluteMod2 = value => x => is.integer(x) && Math.abs(x % 2) === value;
is.even = isAbsoluteMod2(0);
is.odd = isAbsoluteMod2(1);
const isEmptyStringOrArray = x => (is.string(x) || is.array(x)) && x.length === 0;
const isEmptyObject = x => !is.map(x) && !is.set(x) && is.object(x) && Object.keys(x).length === 0;
const isEmptyMapOrSet = x => (is.map(x) || is.set(x)) && x.size === 0;