A helloworld macro for TiddlyWiki!

hellotiddlywiki.js

/*\
title: $:/adithyab/macros/helloworld.js
type: application/javascript
module-type: macro

A helloworld JS macro for Tiddlywiki!
Visit https://adithyab.in/2020/how-to-make-a-basic-javascript-macro-in-tiddlywiki/
\*/
(function() {

    /*jslint node: true, browser: true */
    /*global $tw: false */
    "use strict";

    exports.name = "helloworld";

    exports.params = [{
            name: "var1",
            default: "World"
        },
        /*  {name: "var2"} - The default parameter is optional*/
    ];

    /*
    Run the macro. Make sure it accepts the parameters you have defined above.
    */
    exports.run = function(var1) {
        try {
            return "Hello " + var1 + "!!"
        } catch (err) {
            console.error(err.stack)
            return "(ERROR: " + err.message + ") ";
        }
    };

})();