Parse a JS object path

jsPathSplitter.js

function jsPathSplitter(string) {
    // STRING -> [STRING]
    // ex: 'foo["bar"].x[0] -> ['foo', 'bar', x, '0']'
    // for convenience even allows non-javascripty identifiers like foo.0.bar
    return (function splitter(index, string, parts, term) {
        if (string.length === 0) return parts;
        if (index >= string.length) return parts.concat([string]);
        if (string[index] === '\\') return splitter(index+2, string, parts, term); // escape char

        var newTerm, skip = 0;
        if (string.slice(index, index+term.length) === term) newTerm = '.' // at terminator?
        else if (string[index] === '[') {
            if (string[index+1] === '\'') { newTerm = '\']'; skip = 1; }
            else if (string[index+1] === '"') { newTerm = '"]'; skip = 1; }
            else { newTerm = ']'; skip = 0; }
        }

        return newTerm ?
            splitter(0, string.slice(index + term.length + skip), parts.concat(index > 0 ? [string.slice(0, index)] : []), newTerm) :
            splitter(index+1, string, parts, term);
    })(0, string, [], '.');
}