Technically this should be Array<ValidationRule> where ValidationRule is Function(context: ValidationContext) for the ValidationContext here: https://github.com/graphql/graphql-js/blob/master/src/validation/validate.js#L92, but I'm not sure how to write that. Maybe someone more versed with TypeScript can give it a try. For the time being Array<any> will at least make specifiedRules importable.
Technically this should be
Array<ValidationRule>whereValidationRuleisFunction(context: ValidationContext)for theValidationContexthere: https://github.com/graphql/graphql-js/blob/master/src/validation/validate.js#L92, but I'm not sure how to write that. Maybe someone more versed with TypeScript can give it a try. For the time beingArray<any>will at least makespecifiedRulesimportable.