DOM.format improvements

[chemerisuk]

DOM.format can be used to construct HTML. Thats why having {...} that does not encode input values is not the best solution. Therefore need to add support for both safe and unsafe (it can also be useful) injections. Mustache has a good syntax for that familiar to any front-end developer:

{{encoded}} (by default)
{{{unencoded}}}

It would be nice to add nested object support as well:

{{some.nested.object.value}}

Because DOM.format is going to be executed in JavaScript code, there is no need to add logical operand support. They all can be covered by functors:

var varMap = {
  a: "2",
  b: "2",
  result: function() {
    return this.a + this.b;
  };
};

DOM.format("{{a}}+{{b}}={{result}}", varMap);
// => 2+2=4

[chemerisuk]

Ok, I found a simpler way to handle escaping HTML:

DOM.emmet("a>`{b}`", {b: "<b>"});
// => "<a>&gt;b&lt;</a>"

Value inside of inner text node will always be escaped. This change will be included into DOM.emmet (not in DOM.format as I was thinking before) in the next release.