Eta

Lightweight, powerful, pluggable embedded JS template engine. Written in TypeScript – use it in Node, Deno, or the browser.

A faster, more lightweight, and more configurable EJS alternative

Eta vs. EJS:

• Eta supports Deno, out-of-the-box
• Eta supports layouts out of the box
• Eta allows left whitespace control (with -), something that doesn't work in EJS because EJS uses - on the left side to indicate that the value shouldn't be escaped. Instead, Eta uses ~ to output a raw value
• Eta gives you more flexibility with delimeters -- you could set them to {{ and }}, for example, while with EJS this isn't possible
• Eta adds plugin support
• Comments in Eta use /* ... */ which allows multiline commenting and is more consistent
• Eta doesn't break with delimiters inside strings and comments. Example: <%= "%>" %> works in Eta, while it breaks in EJS
• Eta exposes Typescript types and distributes a UMD build
• Eta allows custom tag-type prefixes. Example: you could change <%= to <%*
• Eta throws more informative errors. If you accidentally leave a tag, string, or multiline comment unclosed, Eta will tell you where the problem is

Users:

<ul>
<% it.users.forEach(function(user){ %>
  <li><%= user %></li>
<% }) %>
</ul>

<%= await getSomeValue() %>
    
<% /* Eta supports multiline comments,
which is really useful */ %>

<%= "<%" %>

<%~ include("mypartial") %>

<%~ include('./navbar', { pages: [
  'home',
  'about',
  'users'
] }) %>

<% layout("layouts/basic") %>

<p>This will be rendered into a layout</p>