Function getExactOptionalProperties

test/fixtures/snapshot/typescript.js:66896–66898

(type)

            return !!source && !!target && maybeTypeOfKind(source, 32768 /* TypeFlags.Undefined */) && !!containsMissingType(target);
        }
        function getExactOptionalProperties(type) {
            return getPropertiesOfType(type).filter(function (targetProp) { return containsMissingType(getTypeOfSymbol(targetProp)); });
        }
        function getBestMatchingType(source, target, isRelatedTo) {
            if (isRelatedTo === void 0) { isRelatedTo = compareTypesAssignable; }
            return findMatchingDiscriminantType(source, target, isRelatedTo, /*skipPartial*/ true) ||