eve/dist/src/compiled/@workflow/core/classify-error.d.ts

Filesystem-first framework for durable backend AI agents that run anywhere.

import { type RunErrorCode, WorkflowWorldError } from '#compiled/@workflow/errors/index.js';
/**
 * Classify an error that caused a workflow run to fail.
 *
 * After the structural separation of infrastructure vs user code error
 * handling, the only errors that reach the `run_failed` try/catch are:
 * - User code errors (throws from workflow functions, propagated step failures)
 * - WorkflowRuntimeError and subclasses (missing timestamps, workflow/step
 *   not registered, corrupted event log, etc.)
 *
 * Uses each subclass's `.is()` static (a name-based duck check) instead of
 * a single `instanceof` check because workflows execute in a separate
 * `vm` realm: the VM-context `WorkflowRuntimeError` and the host-context
 * one are distinct classes, so `instanceof` returns `false` for any error
 * thrown inside the workflow VM and we'd misclassify genuine runtime
 * errors as user errors.
 */
export declare function isWorldContractError(err: unknown): err is WorkflowWorldError;
export declare function classifyRunError(err: unknown): RunErrorCode;
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