Strict/non-strict syntax modes

[bgmort]

There seem to be two big reasons people use nunjucks over competing template engines: for Python/Jinja compatibility, or because it's the best javascript-powered template engine around. While jinja compatibility seems to be a priority, a lot of useful improvements could be made for nunjucks as a javascript library that would not be jinja compatible, but help it be the best possible template engine for javascript. That's why I want to throw out the idea of having a 'strict' mode that is on by default, but when turned off, would allow language features that are not a part of jinja. For example, in non-strict mode, the familiar &&, ||, and ! operators could be used instead of and, or, and not. The ternary operator could also be used instead of Python's odd .. if .. else .. syntax. I think this could go a long way toward making nunjucks the template engine of choice for the growing numbers of all-javascript projects.

[garygreen]

I'm not sure this would really add much value. We do aim to have as close API/syntax to jinja as much as possible, so adding && || !, although familiar to javascript, would potentially polute and confuse, having multiple ways of doing the same thing. -1 for me

[ArmorDarks]

I must agree with @garygreen

👎 for me too

If someone wants Nunjucks features with JS operators — it's always possible to make fork.

[eddywashere]

As someone new to nunjucks and switching from swig, this would have been incredibly valuable. Instead I spent a lot of time figuring out what wasn't supported. Please consider revisiting this option, as it would be great for first users and people coming from swig. I would -1 to forking because that does not help the community. It only dissolves it.