lumbar/lib/templateUtil.js

const ESCAPER_LUT = {
    '\b': '\\b',
    '\f': '\\f',
    '\n': '\\n',
    '\r': '\\r',
    '\t': '\\t',
    '\v': '\\v',
    '\'': '\\\'',
    '\"': '\\\"',
    '\\': '\\\\'
};
const ESCAPER = /[\b\f\n\r\t\v\'\"\\]/g;

exports.escapeJsString = function(string) {
    // TODO : Handle unicode escapes
    return string.replace(ESCAPER, function(c) { return ESCAPER_LUT[c] || c; });
};