Function isStringOperation

packages/search-expression/src/exec.ts:33–42

(ex: SearchExpression)

}

function isStringOperation(ex: SearchExpression) {
    switch (ex.operator) {
        case 'contains':
        case '!contains':
        case 'starts':
        case '!starts':
            return true;
    }
    return false;
}

function isnullorEmpty(value: any) {
    if (value == null) return true; //double equal sign to also catch undefined