15 lines
531 B
JavaScript
Executable File
15 lines
531 B
JavaScript
Executable File
import assertString from './util/assertString';
|
|
import includes from './util/includesArray';
|
|
var defaultOptions = {
|
|
loose: false
|
|
};
|
|
var strictBooleans = ['true', 'false', '1', '0'];
|
|
var looseBooleans = [].concat(strictBooleans, ['yes', 'no']);
|
|
export default function isBoolean(str) {
|
|
var options = arguments.length > 1 && arguments[1] !== undefined ? arguments[1] : defaultOptions;
|
|
assertString(str);
|
|
if (options.loose) {
|
|
return includes(looseBooleans, str.toLowerCase());
|
|
}
|
|
return includes(strictBooleans, str);
|
|
} |