Hi, I just published the first version of nodebb-plugin-katex, even if it's the first version it seems to work as expected, if there is any issue just open a ticket on github

This plugin uses Katex to render the tex code inside your posts, it seems to work well with the markdown plugin.

• default delimiters are the ones used by mathjax \(...\) for inline maths, and \[...\] or $$...$$ for maths blocks.
• an admin page let you use simple $ to wrap inline tex code.
• a $ button has been added to the composer toolbar to facilitate usage.

Feedbacks are welcome.

Thank you @rbeer, with the help of your examples and th socket.io library I implemented it in this commit.

Here are some elements:

In the server side I've created a socket with a function to pass the desired config:

// Create a socket to pass config to the client-side
PluginSocket.Katex = {};
PluginSocket.Katex.getConfig = function (socket, callback) {
var data = {
dollarInline: _self.config.dollarInline,
};
callback(data);
};

In the client side I retrieve the config from the socket using a jquert deferred.promise:

// Retrieve config from the plugin socket and then add the composer button
var Katex = {};
var deferred = new $.Deferred();

function callBack(config) {
Katex.dollarInline = config.dollarInline;
deferred.resolve(config);
}
// do the async call to the socket.
socket.emit('plugins.Katex.getConfig', callBack);

...
// add the usd button to the composer when config caught from socket
$.when(deferred).then(addComposerButton);

Hi, I just published a plugin that parse tex code using katex, his name is nodebb-plugin-katex if you want to give it a try. Feedbacks are welcome.