function exportAll() {
    var btn = document.getElementById('export-all-btn');
    var buttons = document.querySelectorAll('.export-card button.secondary');
    if (buttons.length === 0) return;

    btn.disabled = true;
    btn.textContent = 'Exporting...';
    var i = 0;

    function next() {
        if (i >= buttons.length) {
            btn.textContent = 'Done';
            // A temporary label going back to the real one: `Intent::Revert`,
            // the same duration a copy button flashes for.
            setTimeout(function() { btn.textContent = 'Export All'; btn.disabled = false; }, window.timing.revertMs());
            return;
        }
        buttons[i].click();
        i++;
        // Not a timing intent: this paces one click after another so the
        // browser is not handed a dozen downloads at once.
        setTimeout(next, 1500);
    }
    next();
}