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@lokalise/api-contracts

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Key idea behind API contracts: backend owns entire definition for the route, including its path, HTTP method used and response structure expectations, and exposes it as a part of its API schemas. Then frontend consumes that definition instead of forming f

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import type { ZodSchema, z } from 'zod/v4'; import type { HttpStatusCode } from './HttpStatusCodes.ts'; export type { HttpStatusCode }; export type InferSchemaInput<T extends ZodSchema | undefined> = T extends ZodSchema ? z.input<T> : T extends undefined ? undefined : never; export type InferSchemaOutput<T extends ZodSchema | undefined> = T extends ZodSchema ? z.infer<T> : T extends undefined ? undefined : never; export type RoutePathResolver<PathParams> = (pathParams: PathParams) => string; export interface CommonRouteDefinitionMetadata extends Record<string, unknown> { } export type CommonRouteDefinition<ResponseBodySchema extends z.Schema | undefined = undefined, PathParamsSchema extends z.Schema | undefined = undefined, RequestQuerySchema extends z.Schema | undefined = undefined, RequestHeaderSchema extends z.Schema | undefined = undefined, IsNonJSONResponseExpected extends boolean = false, IsEmptyResponseExpected extends boolean = false> = { isNonJSONResponseExpected?: IsNonJSONResponseExpected; isEmptyResponseExpected?: IsEmptyResponseExpected; successResponseBodySchema: ResponseBodySchema; requestPathParamsSchema?: PathParamsSchema; requestQuerySchema?: RequestQuerySchema; requestHeaderSchema?: RequestHeaderSchema; pathResolver: RoutePathResolver<InferSchemaOutput<PathParamsSchema>>; responseSchemasByStatusCode?: Partial<Record<HttpStatusCode, z.Schema>>; metadata?: CommonRouteDefinitionMetadata; description?: string; summary?: string; tags?: readonly string[]; }; export type PayloadRouteDefinition<RequestBodySchema extends z.Schema | undefined = undefined, SuccessResponseBodySchema extends z.Schema | undefined = undefined, PathParamsSchema extends z.Schema | undefined = undefined, RequestQuerySchema extends z.Schema | undefined = undefined, RequestHeaderSchema extends z.Schema | undefined = undefined, IsNonJSONResponseExpected extends boolean = false, IsEmptyResponseExpected extends boolean = false> = CommonRouteDefinition<SuccessResponseBodySchema, PathParamsSchema, RequestQuerySchema, RequestHeaderSchema, IsNonJSONResponseExpected, IsEmptyResponseExpected> & { method: 'post' | 'put' | 'patch'; requestBodySchema: RequestBodySchema; }; export type GetRouteDefinition<SuccessResponseBodySchema extends z.Schema | undefined = undefined, PathParamsSchema extends z.Schema | undefined = undefined, RequestQuerySchema extends z.Schema | undefined = undefined, RequestHeaderSchema extends z.Schema | undefined = undefined, IsNonJSONResponseExpected extends boolean = false, IsEmptyResponseExpected extends boolean = false> = CommonRouteDefinition<SuccessResponseBodySchema, PathParamsSchema, RequestQuerySchema, RequestHeaderSchema, IsNonJSONResponseExpected, IsEmptyResponseExpected> & { method: 'get'; }; export type DeleteRouteDefinition<SuccessResponseBodySchema extends z.Schema | undefined = undefined, PathParamsSchema extends z.Schema | undefined = undefined, RequestQuerySchema extends z.Schema | undefined = undefined, RequestHeaderSchema extends z.Schema | undefined = undefined, IsNonJSONResponseExpected extends boolean = false, IsEmptyResponseExpected extends boolean = true> = CommonRouteDefinition<SuccessResponseBodySchema, PathParamsSchema, RequestQuerySchema, RequestHeaderSchema, IsNonJSONResponseExpected, IsEmptyResponseExpected> & { method: 'delete'; }; export declare function buildPayloadRoute<RequestBodySchema extends z.Schema | undefined = undefined, SuccessResponseBodySchema extends z.Schema | undefined = undefined, PathParamsSchema extends z.Schema | undefined = undefined, RequestQuerySchema extends z.Schema | undefined = undefined, RequestHeaderSchema extends z.Schema | undefined = undefined, IsNonJSONResponseExpected extends boolean = false, IsEmptyResponseExpected extends boolean = false>(params: PayloadRouteDefinition<RequestBodySchema, SuccessResponseBodySchema, PathParamsSchema, RequestQuerySchema, RequestHeaderSchema, IsNonJSONResponseExpected, IsEmptyResponseExpected>): PayloadRouteDefinition<RequestBodySchema, SuccessResponseBodySchema, PathParamsSchema, RequestQuerySchema, RequestHeaderSchema, IsNonJSONResponseExpected, IsEmptyResponseExpected>; export declare function buildGetRoute<SuccessResponseBodySchema extends z.Schema | undefined = undefined, PathParamsSchema extends z.Schema | undefined = undefined, RequestQuerySchema extends z.Schema | undefined = undefined, RequestHeaderSchema extends z.Schema | undefined = undefined, IsNonJSONResponseExpected extends boolean = false, IsEmptyResponseExpected extends boolean = false>(params: Omit<GetRouteDefinition<SuccessResponseBodySchema, PathParamsSchema, RequestQuerySchema, RequestHeaderSchema, IsNonJSONResponseExpected, IsEmptyResponseExpected>, 'method'>): GetRouteDefinition<SuccessResponseBodySchema, PathParamsSchema, RequestQuerySchema, RequestHeaderSchema, IsNonJSONResponseExpected, IsEmptyResponseExpected>; export declare function buildDeleteRoute<SuccessResponseBodySchema extends z.Schema | undefined = undefined, PathParamsSchema extends z.Schema | undefined = undefined, RequestQuerySchema extends z.Schema | undefined = undefined, RequestHeaderSchema extends z.Schema | undefined = undefined, IsNonJSONResponseExpected extends boolean = false, IsEmptyResponseExpected extends boolean = true>(params: Omit<DeleteRouteDefinition<SuccessResponseBodySchema, PathParamsSchema, RequestQuerySchema, RequestHeaderSchema, IsNonJSONResponseExpected, IsEmptyResponseExpected>, 'method'>): DeleteRouteDefinition<SuccessResponseBodySchema, PathParamsSchema, RequestQuerySchema, RequestHeaderSchema, IsNonJSONResponseExpected, IsEmptyResponseExpected>; /** * This method maps given route definition to a string of the format '/static-path-part/:path-param-value' */ export declare function mapRouteToPath(routeDefinition: CommonRouteDefinition<any, any, any, any, any, any>): string;