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procedure.ts
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procedure.ts
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import type { TRPCError } from './error/TRPCError';
import type { ProcedureCallOptions } from './procedureBuilder';
export const procedureTypes = ['query', 'mutation', 'subscription'] as const;
/**
* @public
*/
export type ProcedureType = (typeof procedureTypes)[number];
type ClientContext = Record<string, unknown>;
/**
* @internal
*/
export interface ProcedureOptions {
/**
* Client-side context
*/
context?: ClientContext;
signal?: AbortSignal;
}
interface BuiltProcedureDef {
input: unknown;
output: unknown;
}
/**
*
* @internal
*/
export interface Procedure<
TType extends ProcedureType,
TDef extends BuiltProcedureDef,
> {
_def: {
/**
* These are just types, they can't be used at runtime
* @internal
*/
$types: {
input: TDef['input'];
output: TDef['output'];
};
procedure: true;
type: TType;
/**
* @internal
* Meta is not inferrable on individual procedures, only on the router
*/
meta: unknown;
experimental_caller: boolean;
};
/**
* @internal
*/
(opts: ProcedureCallOptions<unknown>): Promise<TDef['output']>;
}
export interface QueryProcedure<TDef extends BuiltProcedureDef>
extends Procedure<'query', TDef> {}
export interface MutationProcedure<TDef extends BuiltProcedureDef>
extends Procedure<'mutation', TDef> {}
export interface SubscriptionProcedure<TDef extends BuiltProcedureDef>
extends Procedure<'subscription', TDef> {}
export type AnyQueryProcedure = QueryProcedure<any>;
export type AnyMutationProcedure = MutationProcedure<any>;
export type AnySubscriptionProcedure = SubscriptionProcedure<any>;
export type AnyProcedure = Procedure<ProcedureType, any>;
export type inferProcedureInput<TProcedure extends AnyProcedure> =
undefined extends inferProcedureParams<TProcedure>['$types']['input']
? void | inferProcedureParams<TProcedure>['$types']['input']
: inferProcedureParams<TProcedure>['$types']['input'];
export type inferProcedureParams<TProcedure> = TProcedure extends AnyProcedure
? TProcedure['_def']
: never;
export type inferProcedureOutput<TProcedure> =
inferProcedureParams<TProcedure>['$types']['output'];
/**
* @internal
*/
export interface ErrorHandlerOptions<TContext> {
error: TRPCError;
type: ProcedureType | 'unknown';
path: string | undefined;
input: unknown;
ctx: TContext | undefined;
}