module import { FUNCTION_OPERATORS } from '../function-operators.const' ; import { ConditionOperator } from '../type/condition-operator.type' ; import { FunctionOperator } from '../type/function-operator.type' ; param { ConditionOperator } operator returns { boolean } hidden export function isFunctionOperator ( operator ) { return ( < any [ ] > FUNCTION_OPERATORS ) . includes ( operator ) ; }