Reference

tilttek/sets

Type	Role
`Sets`	Defines versions, measures progress, records completions and dispatches their events
`SetDefinition`	A version of a set: members, tiers and rewards; evaluates holdings; read from and written to arrays and JSON
`Tier`	A step of a set: a number of members at a level or higher, with its rewards
`Reward`	An opaque reward a set or a tier declares: kind, reference and quantity
`Holdings`	What a holder owns: each member with its highest level
`Evaluation`	A set measured against holdings: owned, missing, percentage, tiers reached
`Progress`	An evaluation with the holder's completions, those kept and those the call recorded
`Completion`	A set or tier completed once by a holder, with the version and the moment in UTC
`Identifiers`	The shapes of codes, members and holders, which other packages reuse
`UtcClock`	The system's clock in UTC, the default clock
`Contract\DefinitionStore`	Where the versions of the sets are kept
`Contract\CompletionStore`	Where the completions are kept
`Store\InMemoryDefinitionStore`, `Store\InMemoryCompletionStore`	The stores in memory
`Event\SetCompleted`	Dispatched once, when a holder completes a set, with its rewards
`Event\TierReached`	Dispatched once, when a holder reaches a tier, with its rewards
`Exception\SetsException`	The interface of every exception of the library
`Exception\InvalidSet`, `UnknownSet`, `DefinitionConflict`	See Exceptions

ArrayInput is internal.