import { Options as NoCaseOptions } from 'camel-case';
import { AxiosInstance, AxiosRequestConfig, AxiosRequestTransformer, AxiosResponseTransformer, AxiosRequestHeaders, AxiosInterceptorManager } from 'axios';
/** string transformers (change-case functions) */
export interface CaseFunction {
    (input: string, options?: NoCaseOptions): string;
}
export type CaseFunctionTypes = 'snake' | 'camel' | 'header';
export type CaseFunctions = {
    [K in CaseFunctionTypes]: CaseFunction;
};
/** decorators for string transformers */
export interface ApplyCaseOptions {
    (fn: CaseFunction, options?: NoCaseOptions): CaseFunction;
}
export interface PreserveSpecificKeys {
    (fn: CaseFunction, keys: string[] | PreservedKeysCondition): CaseFunction;
}
/** objects which can be handled in object transformers */
export interface TransformableObject {
    [key: string]: unknown;
}
export type Transformable = (unknown[] | Record<string | number, unknown> | FormData | URLSearchParams) & TransformableObject;
/** object transformers and their factories */
export interface PreservedKeysCondition {
    (input: string, options?: NoCaseOptions): boolean;
}
export type ObjectTransformerOptions = {
    overwrite?: boolean;
    preservedKeys?: string[] | PreservedKeysCondition;
    caseOptions?: NoCaseOptions;
};
export interface ObjectTransformer {
    (data: unknown, options?: ObjectTransformerOptions): unknown;
}
export type ObjectTransformers = {
    [K in CaseFunctionTypes]: ObjectTransformer;
};
export interface CreateObjectTransformer {
    (fn: CaseFunction): ObjectTransformer;
}
export interface CreateObjectTransformerOf {
    (type: CaseFunctionTypes, options?: Partial<CaseFunctions>): ObjectTransformer;
}
export interface CreateObjectTransformers {
    (options?: Partial<CaseFunctions>): ObjectTransformers;
}
/** converters for axios and their factories */
export type AxiosCaseMiddlewareOptions = Omit<ObjectTransformerOptions, 'overwrite'> & {
    caseFunctions?: Partial<CaseFunctions>;
    ignoreHeaders?: boolean;
    ignoreParams?: boolean;
};
export type AxiosInterceptor<V> = NonNullable<Parameters<AxiosInterceptorManager<V>['use']>[0]>;
export type AxiosRequestInterceptor = AxiosInterceptor<AxiosRequestConfig & {
    headers: AxiosRequestHeaders;
}>;
export interface CreateAxiosInterceptor<V> {
    (options?: AxiosCaseMiddlewareOptions): AxiosInterceptor<V>;
}
export interface CreateAxiosRequestInterceptor {
    (options?: AxiosCaseMiddlewareOptions): AxiosRequestInterceptor;
}
export interface CreateAxiosRequestTransformer {
    (options?: AxiosCaseMiddlewareOptions): AxiosRequestTransformer;
}
export interface CreateAxiosResponseTransformer {
    (options?: AxiosCaseMiddlewareOptions): AxiosResponseTransformer;
}
/** converter applier */
export type ApplyCaseMiddlewareOptions = AxiosCaseMiddlewareOptions & {
    caseMiddleware?: {
        requestTransformer?: AxiosRequestTransformer;
        responseTransformer?: AxiosResponseTransformer;
        requestInterceptor?: AxiosRequestInterceptor;
    };
};
export interface ApplyCaseMiddleware {
    (axios: AxiosInstance, options?: ApplyCaseMiddlewareOptions): AxiosInstance;
}