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/**
* Type-safe accessors for navigating migration output.
*
* Migrations input/output `Record<string, unknown>` because they handle
* potentially malformed data from older versions. Tests need to inspect
* specific properties of the migrated result without using type assertions.
*
* These helpers narrow through type guards (Array.isArray + a record
* predicate), so the file contains no unsafe assertions despite turning
* unknown into concrete shapes.
*/
function describe(value: unknown): string {
if (value === null) return "null";
if (Array.isArray(value)) return "array";
return typeof value;
}
function isRecord(value: unknown): value is Record<string, unknown> {
return typeof value === "object" && value !== null && !Array.isArray(value);
}
export function asRecord(value: unknown): Record<string, unknown> {
if (!isRecord(value)) {
throw new Error(`Expected record, got ${describe(value)}`);
}
return value;
}
export function asArray(value: unknown): unknown[] {
if (!Array.isArray(value)) {
throw new Error(`Expected array, got ${describe(value)}`);
}
return value;
}
export function asRecordArray(value: unknown): Record<string, unknown>[] {
return asArray(value).map(asRecord);
}
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