Function simpleKeys

lib/matplotlib/backends/web_backend/js/mpl.js:651–658

(original)

 * https://stackoverflow.com/a/24161582/3208463
 */
function simpleKeys(original) {
    return Object.keys(original).reduce(function (obj, key) {
        if (typeof original[key] !== 'object') {
            obj[key] = original[key];
        }
        return obj;
    }, {});
}

mpl.figure.prototype.mouse_event = function (event, name) {
    if (name === 'button_press') {