Function getBaseConstraintOfType

test/fixtures/snapshot/typescript.js:58931–58937

(type)

            return undefined;
        }
        function getBaseConstraintOfType(type) {
            if (type.flags & (58982400 /* TypeFlags.InstantiableNonPrimitive */ | 3145728 /* TypeFlags.UnionOrIntersection */ | 134217728 /* TypeFlags.TemplateLiteral */ | 268435456 /* TypeFlags.StringMapping */)) {
                var constraint = getResolvedBaseConstraint(type);
                return constraint !== noConstraintType && constraint !== circularConstraintType ? constraint : undefined;
            }
            return type.flags & 4194304 /* TypeFlags.Index */ ? keyofConstraintType : undefined;
        }
        /**
         * This is similar to `getBaseConstraintOfType` except it returns the input type if there's no base constraint, instead of `undefined`
         * It also doesn't map indexes to `string`, as where this is used this would be unneeded (and likely undesirable)