Find out why doT is so much faster

[TimothyGu]

This is more of a WIP for myself.

• benchmark its escape function
• See if https://github.com/olado/doT/blob/master/doT.js#L48-L51 trick can be applied to EJS. Nope.
• Hire a wizard to make EJS run as fast as doT.

WARNING: to anyone out there thinking tj/ejs is unreadable, please do not try on this task.

[TimothyGu]

Escape function ported in #50.

Now templates generated with !_with mode is about 55% as fast as doT's (which doesn't use with at all).

[TimothyGu]

Also note that even doT compilation is faster. By a lot. (By a lot I mean almost 500%.)

[TimothyGu]

OK, after #50 and #56, !_with is about 60% faster than doT (yes!!!!), while using _with turns out to be marginally slower (<5%).

(Measured using client mode and copied the functions into a separate file. For some reason when using all functions in the same script as compilation makes EJS slower while making doT faster.)

Compilation is marginally faster as well.

[bentinata]

I'm moving from Swig, as it unmaintained, and inbetween EJS and doT. I know you might be biased, but, what's the pros and cons of EJS and doT? Also, what should I do to make EJS better?

[TimothyGu]

@bentinata doT has an inherently more complex syntax, and thus a steeper learning curve is required. EJS is faster to learn, but once you get used to the doT "concise" syntax you might find a lot of <% if (...) -%> redundant. There isn't any way to make EJS "better" per se because EJS is designed to be simple and bare-bones.