Function getConstraintDeclaration

test/fixtures/snapshot/typescript.js:60063–60065

(type)

                !!(type.flags & 2097152 /* TypeFlags.Intersection */) && !isGenericType(type) && ts.some(type.types, isValidIndexKeyType);
        }
        function getConstraintDeclaration(type) {
            return ts.mapDefined(ts.filter(type.symbol && type.symbol.declarations, ts.isTypeParameterDeclaration), ts.getEffectiveConstraintOfTypeParameter)[0];
        }
        function getInferredTypeParameterConstraint(typeParameter, omitTypeReferences) {
            var _a;
            var inferences;