define(['./keys'], function (keys) {
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// Internal helper to generate functions for escaping and unescaping strings
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// to/from HTML interpolation.
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function createEscaper(map) {
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var escaper = function(match) {
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return map[match];
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};
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// Regexes for identifying a key that needs to be escaped.
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var source = '(?:' + keys(map).join('|') + ')';
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var testRegexp = RegExp(source);
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var replaceRegexp = RegExp(source, 'g');
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return function(string) {
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string = string == null ? '' : '' + string;
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return testRegexp.test(string) ? string.replace(replaceRegexp, escaper) : string;
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};
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}
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return createEscaper;
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});
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