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33 lines
860 B
JavaScript
33 lines
860 B
JavaScript
12 months ago
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'use strict';
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const CastError = require('../error/cast');
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/**
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* Given a value, cast it to a boolean, or throw a `CastError` if the value
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* cannot be casted. `null` and `undefined` are considered valid.
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*
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* @param {Any} value
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* @param {String} [path] optional the path to set on the CastError
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* @return {Boolean|null|undefined}
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* @throws {CastError} if `value` is not one of the allowed values
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* @api private
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*/
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module.exports = function castBoolean(value, path) {
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if (module.exports.convertToTrue.has(value)) {
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return true;
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}
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if (module.exports.convertToFalse.has(value)) {
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return false;
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}
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if (value == null) {
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return value;
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}
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throw new CastError('boolean', value, path);
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};
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module.exports.convertToTrue = new Set([true, 'true', 1, '1', 'yes']);
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module.exports.convertToFalse = new Set([false, 'false', 0, '0', 'no']);
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