var trim = require('./trim');
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function boolMatch(s, matchers) {
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var i, matcher, down = s.toLowerCase();
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matchers = [].concat(matchers);
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for (i = 0; i < matchers.length; i += 1) {
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matcher = matchers[i];
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if (!matcher) continue;
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if (matcher.test && matcher.test(s)) return true;
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if (matcher.toLowerCase() === down) return true;
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}
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}
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module.exports = function toBoolean(str, trueValues, falseValues) {
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if (typeof str === 'number') str = '' + str;
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if (typeof str !== 'string') return !!str;
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str = trim(str);
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if (boolMatch(str, trueValues || ['true', '1'])) return true;
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if (boolMatch(str, falseValues || ['false', '0'])) return false;
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};
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