N8python

      window.keybindr = (() => {
        // Declare set of keys that are pressed
        const keys = new Set();
        // Declare "associative array" of bindings to callback
        const bindings = [];
        function tokenizeKeys(keys){
          // Get array of different keys from string
          return keys.split("+");
        }
        window.addEventListener("keydown", ({key}) => {

N8python

async function fmait(callbacks, array) {
    for (const callback of callbacks) {
        array = await Promise.all(array.map(item => Promise.resolve(callback(item))));
    }
    return array;
}