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