Type Alias DotPathKeys<T, Depth>

DotPathKeys: Depth["length"] extends MaxDotPathDepth
    ? never
    : T extends NonRecursiveLeaf
        ? never
        : T extends object
            ? {
                [K in keyof T & string]: | K
                | (
                    NonNullable<T[K]> extends readonly (...)[]
                        ? `${K}[${ListIndex}]` | ((...) extends (...) ? (...) : (...))
                        : DotPathKeys<(...)[(...)], [(...), (...)]> extends infer D extends
                            string
                            ? `${K}.${D}`
                            : never
                )
            }[keyof T & string]
            : never

Recursively generates dot-separated key paths for plain object types. Stops recursion at NonRecursiveLeaf types and at MaxDotPathDepth levels to prevent "Type instantiation is excessively deep" errors.

An array-valued field yields name[n] paths into its elements, for each ListIndex, which is DynamoDB's document-path syntax for one element of a List. A path through an array with no index is deliberately absent: DynamoDB has no path meaning "every element", so such a condition can only match nothing.

Type Parameters

T
The object type to generate paths for.
Depth extends unknown[] = []
Internal depth counter (tuple). Do not provide externally.

Type Alias DotPathKeys<T, Depth>

Type Parameters

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