import { GraphQLError } from 'graphql';
export declare class InvalidTransformerError extends Error {
    constructor(message: string);
}
export declare class SchemaValidationError extends Error {
    constructor(errors: Readonly<GraphQLError[]>);
}
export declare class TransformerContractError extends Error {
    constructor(message: string);
}
export declare class InvalidMigrationError extends Error {
    fix: string;
    causedBy: string;
    constructor(message: string, causedBy: string, fix: string);
}
export declare class InvalidDirectiveError extends Error {
    constructor(message: string);
}
export declare class UnknownDirectiveError extends Error {
    constructor(message: string);
}
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