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@tjmehta
fixed edgecases. added isSafePositiveInteger method, tests, and docs.
March 23, 2016 16:45
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/* $lab:coverage:off$ */
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var MAX_SAFE_INTEGER = Number.MAX_SAFE_INTEGER || 9007199254740991
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/* $lab:coverage:on$ */
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@tjmehta
code style
March 23, 2016 12:09
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module.exports = isPositiveInteger
@tjmehta
fixed edgecases. added isSafePositiveInteger method, tests, and docs.
March 23, 2016 16:45
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module.exports.isSafePositiveInteger = isSafePositiveInteger
@tjmehta
code style
March 23, 2016 12:09
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function isPositiveInteger (x) {
@tjmehta
fixed edgecases. added isSafePositiveInteger method, tests, and docs.
March 23, 2016 16:45
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// Is it a number?
@asurinov
Added support for Number object
March 24, 2016 21:30
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return Object.prototype.toString.call(x) === '[object Number]' &&
@tjmehta
tab tidy
March 24, 2016 12:55
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// Is it an integer?
@asurinov
Added support for Number object
March 24, 2016 21:30
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x % 1 === 0 &&
@tjmehta
fixed edgecases. added isSafePositiveInteger method, tests, and docs.
March 23, 2016 16:45
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// Is it positive?
@asurinov
Added support for Number object
March 24, 2016 21:30
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x > 0
@tjmehta
fixed edgecases. added isSafePositiveInteger method, tests, and docs.
March 23, 2016 16:45
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}
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// strict positive integer check:
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// https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Number/MAX_SAFE_INTEGER
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function isSafePositiveInteger (x) {
@asurinov
Added support for Number object
March 24, 2016 21:30
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return isPositiveInteger(x) &&
@tjmehta
tab tidy
March 24, 2016 12:55
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x <= MAX_SAFE_INTEGER
@fearphage
drastically simplified code
March 23, 2016 09:05
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}