Function validateExpression

docs/app/js/sanddance-app.js:12518–12526

(ex)

    }
}
function validateExpression(ex) {
    if (ex.operator === "isnullorEmpty") {
        ex.errorMessage = null;
        return;
    }
    const s = (0, _searchTerm.getText)(ex);
    if (s.length === 0) ex.errorMessage = (0, _language.strings).labelRequired;
    else ex.errorMessage = null;
}
function clearExpressionValidation(ex) {
    if (ex.operator === "isnullorEmpty") {
        ex.errorMessage = null;