Resource.Error
luastra/resourceResource.Error represents the unsuccessful branch of a bounded operation. Its stable code and structured context support control flow and safe diagnostics without parsing an exception message.
Before you use it
Add luastra/resource to this module's dependencies in luastra.json, then import it with require("luastra/resource"). Create each controller once outside app.render. Record the exact ticket returned by begin, correlate it with the host RequestId, and settle only that ticket from app.resolve or another admitted completion boundary.
How it fits
Resource types describe read and mutation states, immutable snapshots, generation tickets, optimistic callbacks, and application-owned errors.
When to use it
Use Resource.Error on the unsuccessful branch of the related result. Read its stable fields for control flow or diagnostics; do not parse human-readable assertion or error text.
Fields or definition
| Parameter | Type / values | Description |
|---|---|---|
| code | string | Stable machine-readable failure code suitable for branching and diagnostics. |
| retryable | boolean | Checked retryable field of Resource.Error; its exact admitted type is boolean. |
| fields | { [string]: string }? | Validated bounded field map carried by the decoded or migrated value. |
What happens next
A checked resource-state annotation for one explicit asynchronous workflow.
Failures and fixes
Invalid options and programmer contract violations fail immediately. A stale ticket returns false without overwriting current state. Translate provider failures to bounded Resource.Error codes and keep raw messages, payloads, tokens, and credentials outside the controller.
Availability
Public-source alpha state API in 0.5.0-alpha; host-independent and designed to compose with any asynchronous capability.
Exact declaration
export type Error = {
code: string,
retryable: boolean,
fields: { [string]: string }?,
}