Function isDirectionalKeyCode

docs/app/js/sanddance-app.js:25304–25306

(which)

var _a;
var DirectionalKeyCodes = (_a = {}, _a[(0, _keyCodes.KeyCodes).up] = 1, _a[(0, _keyCodes.KeyCodes).down] = 1, _a[(0, _keyCodes.KeyCodes).left] = 1, _a[(0, _keyCodes.KeyCodes).right] = 1, _a[(0, _keyCodes.KeyCodes).home] = 1, _a[(0, _keyCodes.KeyCodes).end] = 1, _a[(0, _keyCodes.KeyCodes).tab] = 1, _a[(0, _keyCodes.KeyCodes).pageUp] = 1, _a[(0, _keyCodes.KeyCodes).pageDown] = 1, _a);
function isDirectionalKeyCode(which) {
    return !!DirectionalKeyCodes[which];
}
function addDirectionalKeyCode(which) {
    DirectionalKeyCodes[which] = 1;
}