mirror of
https://github.com/musix-org/musix-oss
synced 2024-11-13 02:20:18 +00:00
30 lines
774 B
JavaScript
30 lines
774 B
JavaScript
/*!
|
|
* is-natural-number.js | MIT (c) Shinnosuke Watanabe
|
|
* https://github.com/shinnn/is-natural-number.js
|
|
*/
|
|
export default function isNaturalNumber(val, option) {
|
|
if (option) {
|
|
if (typeof option !== 'object') {
|
|
throw new TypeError(
|
|
String(option) +
|
|
' is not an object. Expected an object that has boolean `includeZero` property.'
|
|
);
|
|
}
|
|
|
|
if ('includeZero' in option) {
|
|
if (typeof option.includeZero !== 'boolean') {
|
|
throw new TypeError(
|
|
String(option.includeZero) +
|
|
' is neither true nor false. `includeZero` option must be a Boolean value.'
|
|
);
|
|
}
|
|
|
|
if (option.includeZero && val === 0) {
|
|
return true;
|
|
}
|
|
}
|
|
}
|
|
|
|
return Number.isSafeInteger(val) && val >= 1;
|
|
}
|