Grammalecte  Diff

// In Firefox, there is no console.log in PromiseWorker, but there is worker.log.
// In Thunderbird, you can’t access to console directly. So it’s required to pass a log function.
let funcOutput = null;

var helpers = {

    setLogOutput: function (func) {
        // probably obsolete now, as console.log seems to work everywhere (at last!)
        funcOutput = func;
    },

    echo: function (obj) {
        // probably obsolete now, as console.log seems to work everywhere (at last!)
        if (funcOutput !== null) {
            funcOutput(obj);
        } else {
            console.log(obj);
        }
        return true;
    },