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tests/baselines/reference/noInferVsDistributiveConditionalType2.symbols
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//// [tests/cases/conformance/types/typeRelationships/typeInference/noInferVsDistributiveConditionalType2.ts] //// | ||
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=== noInferVsDistributiveConditionalType2.ts === | ||
type EventObject = { | ||
>EventObject : Symbol(EventObject, Decl(noInferVsDistributiveConditionalType2.ts, 0, 0)) | ||
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type: string; | ||
>type : Symbol(type, Decl(noInferVsDistributiveConditionalType2.ts, 0, 20)) | ||
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}; | ||
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type FooEvent = { type: "FOO" }; | ||
>FooEvent : Symbol(FooEvent, Decl(noInferVsDistributiveConditionalType2.ts, 2, 2)) | ||
>type : Symbol(type, Decl(noInferVsDistributiveConditionalType2.ts, 4, 17)) | ||
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type BarEvent = { type: "BAR" }; | ||
>BarEvent : Symbol(BarEvent, Decl(noInferVsDistributiveConditionalType2.ts, 4, 32)) | ||
>type : Symbol(type, Decl(noInferVsDistributiveConditionalType2.ts, 5, 17)) | ||
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type Input = FooEvent | BarEvent; | ||
>Input : Symbol(Input, Decl(noInferVsDistributiveConditionalType2.ts, 5, 32)) | ||
>FooEvent : Symbol(FooEvent, Decl(noInferVsDistributiveConditionalType2.ts, 2, 2)) | ||
>BarEvent : Symbol(BarEvent, Decl(noInferVsDistributiveConditionalType2.ts, 4, 32)) | ||
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type ExtractEventSimplified< | ||
>ExtractEventSimplified : Symbol(ExtractEventSimplified, Decl(noInferVsDistributiveConditionalType2.ts, 7, 33)) | ||
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TEvent extends EventObject, | ||
>TEvent : Symbol(TEvent, Decl(noInferVsDistributiveConditionalType2.ts, 9, 28)) | ||
>EventObject : Symbol(EventObject, Decl(noInferVsDistributiveConditionalType2.ts, 0, 0)) | ||
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K extends TEvent["type"], | ||
>K : Symbol(K, Decl(noInferVsDistributiveConditionalType2.ts, 10, 29)) | ||
>TEvent : Symbol(TEvent, Decl(noInferVsDistributiveConditionalType2.ts, 9, 28)) | ||
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> = string extends TEvent["type"] ? TEvent : Extract<TEvent, { type: K }>; | ||
>TEvent : Symbol(TEvent, Decl(noInferVsDistributiveConditionalType2.ts, 9, 28)) | ||
>TEvent : Symbol(TEvent, Decl(noInferVsDistributiveConditionalType2.ts, 9, 28)) | ||
>Extract : Symbol(Extract, Decl(lib.es5.d.ts, --, --)) | ||
>TEvent : Symbol(TEvent, Decl(noInferVsDistributiveConditionalType2.ts, 9, 28)) | ||
>type : Symbol(type, Decl(noInferVsDistributiveConditionalType2.ts, 12, 62)) | ||
>K : Symbol(K, Decl(noInferVsDistributiveConditionalType2.ts, 10, 29)) | ||
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type Result = ExtractEventSimplified<NoInfer<Input>, "FOO">; | ||
>Result : Symbol(Result, Decl(noInferVsDistributiveConditionalType2.ts, 12, 74)) | ||
>ExtractEventSimplified : Symbol(ExtractEventSimplified, Decl(noInferVsDistributiveConditionalType2.ts, 7, 33)) | ||
>NoInfer : Symbol(NoInfer, Decl(lib.es5.d.ts, --, --)) | ||
>Input : Symbol(Input, Decl(noInferVsDistributiveConditionalType2.ts, 5, 32)) | ||
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type EventDescriptorMatches< | ||
>EventDescriptorMatches : Symbol(EventDescriptorMatches, Decl(noInferVsDistributiveConditionalType2.ts, 14, 60)) | ||
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TEventType extends string, | ||
>TEventType : Symbol(TEventType, Decl(noInferVsDistributiveConditionalType2.ts, 16, 28)) | ||
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TNormalizedDescriptor, | ||
>TNormalizedDescriptor : Symbol(TNormalizedDescriptor, Decl(noInferVsDistributiveConditionalType2.ts, 17, 28)) | ||
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> = TEventType extends TNormalizedDescriptor ? true : false; | ||
>TEventType : Symbol(TEventType, Decl(noInferVsDistributiveConditionalType2.ts, 16, 28)) | ||
>TNormalizedDescriptor : Symbol(TNormalizedDescriptor, Decl(noInferVsDistributiveConditionalType2.ts, 17, 28)) | ||
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type PartialEventDescriptor<TEventType extends string> = | ||
>PartialEventDescriptor : Symbol(PartialEventDescriptor, Decl(noInferVsDistributiveConditionalType2.ts, 19, 60)) | ||
>TEventType : Symbol(TEventType, Decl(noInferVsDistributiveConditionalType2.ts, 21, 28)) | ||
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TEventType extends `${infer TLeading}.${infer TTail}` | ||
>TEventType : Symbol(TEventType, Decl(noInferVsDistributiveConditionalType2.ts, 21, 28)) | ||
>TLeading : Symbol(TLeading, Decl(noInferVsDistributiveConditionalType2.ts, 22, 29)) | ||
>TTail : Symbol(TTail, Decl(noInferVsDistributiveConditionalType2.ts, 22, 47)) | ||
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? `${TLeading}.*` | `${TLeading}.${PartialEventDescriptor<TTail>}` | ||
>TLeading : Symbol(TLeading, Decl(noInferVsDistributiveConditionalType2.ts, 22, 29)) | ||
>TLeading : Symbol(TLeading, Decl(noInferVsDistributiveConditionalType2.ts, 22, 29)) | ||
>PartialEventDescriptor : Symbol(PartialEventDescriptor, Decl(noInferVsDistributiveConditionalType2.ts, 19, 60)) | ||
>TTail : Symbol(TTail, Decl(noInferVsDistributiveConditionalType2.ts, 22, 47)) | ||
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: never; | ||
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type EventDescriptor<TEvent extends EventObject> = | ||
>EventDescriptor : Symbol(EventDescriptor, Decl(noInferVsDistributiveConditionalType2.ts, 24, 12)) | ||
>TEvent : Symbol(TEvent, Decl(noInferVsDistributiveConditionalType2.ts, 26, 21)) | ||
>EventObject : Symbol(EventObject, Decl(noInferVsDistributiveConditionalType2.ts, 0, 0)) | ||
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| TEvent["type"] | ||
>TEvent : Symbol(TEvent, Decl(noInferVsDistributiveConditionalType2.ts, 26, 21)) | ||
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| PartialEventDescriptor<TEvent["type"]> | ||
>PartialEventDescriptor : Symbol(PartialEventDescriptor, Decl(noInferVsDistributiveConditionalType2.ts, 19, 60)) | ||
>TEvent : Symbol(TEvent, Decl(noInferVsDistributiveConditionalType2.ts, 26, 21)) | ||
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| "*"; | ||
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type NormalizeDescriptor<TDescriptor extends string> = TDescriptor extends "*" | ||
>NormalizeDescriptor : Symbol(NormalizeDescriptor, Decl(noInferVsDistributiveConditionalType2.ts, 29, 8)) | ||
>TDescriptor : Symbol(TDescriptor, Decl(noInferVsDistributiveConditionalType2.ts, 31, 25)) | ||
>TDescriptor : Symbol(TDescriptor, Decl(noInferVsDistributiveConditionalType2.ts, 31, 25)) | ||
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? string | ||
: TDescriptor extends `${infer TLeading}.*` | ||
>TDescriptor : Symbol(TDescriptor, Decl(noInferVsDistributiveConditionalType2.ts, 31, 25)) | ||
>TLeading : Symbol(TLeading, Decl(noInferVsDistributiveConditionalType2.ts, 33, 32)) | ||
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? `${TLeading}.${string}` | ||
>TLeading : Symbol(TLeading, Decl(noInferVsDistributiveConditionalType2.ts, 33, 32)) | ||
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: TDescriptor; | ||
>TDescriptor : Symbol(TDescriptor, Decl(noInferVsDistributiveConditionalType2.ts, 31, 25)) | ||
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type ExtractEvent< | ||
>ExtractEvent : Symbol(ExtractEvent, Decl(noInferVsDistributiveConditionalType2.ts, 35, 16)) | ||
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TEvent extends EventObject, | ||
>TEvent : Symbol(TEvent, Decl(noInferVsDistributiveConditionalType2.ts, 37, 18)) | ||
>EventObject : Symbol(EventObject, Decl(noInferVsDistributiveConditionalType2.ts, 0, 0)) | ||
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TDescriptor extends EventDescriptor<TEvent>, | ||
>TDescriptor : Symbol(TDescriptor, Decl(noInferVsDistributiveConditionalType2.ts, 38, 29)) | ||
>EventDescriptor : Symbol(EventDescriptor, Decl(noInferVsDistributiveConditionalType2.ts, 24, 12)) | ||
>TEvent : Symbol(TEvent, Decl(noInferVsDistributiveConditionalType2.ts, 37, 18)) | ||
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> = string extends TEvent["type"] | ||
>TEvent : Symbol(TEvent, Decl(noInferVsDistributiveConditionalType2.ts, 37, 18)) | ||
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? TEvent | ||
>TEvent : Symbol(TEvent, Decl(noInferVsDistributiveConditionalType2.ts, 37, 18)) | ||
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: NormalizeDescriptor<TDescriptor> extends infer TNormalizedDescriptor | ||
>NormalizeDescriptor : Symbol(NormalizeDescriptor, Decl(noInferVsDistributiveConditionalType2.ts, 29, 8)) | ||
>TDescriptor : Symbol(TDescriptor, Decl(noInferVsDistributiveConditionalType2.ts, 38, 29)) | ||
>TNormalizedDescriptor : Symbol(TNormalizedDescriptor, Decl(noInferVsDistributiveConditionalType2.ts, 42, 50)) | ||
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? TEvent extends any | ||
>TEvent : Symbol(TEvent, Decl(noInferVsDistributiveConditionalType2.ts, 37, 18)) | ||
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? // true is the check type here to match both true and boolean | ||
true extends EventDescriptorMatches<TEvent["type"], TNormalizedDescriptor> | ||
>EventDescriptorMatches : Symbol(EventDescriptorMatches, Decl(noInferVsDistributiveConditionalType2.ts, 14, 60)) | ||
>TEvent : Symbol(TEvent, Decl(noInferVsDistributiveConditionalType2.ts, 37, 18)) | ||
>TNormalizedDescriptor : Symbol(TNormalizedDescriptor, Decl(noInferVsDistributiveConditionalType2.ts, 42, 50)) | ||
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? TEvent | ||
>TEvent : Symbol(TEvent, Decl(noInferVsDistributiveConditionalType2.ts, 37, 18)) | ||
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: never | ||
: never | ||
: never; | ||
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type ActionFunction< | ||
>ActionFunction : Symbol(ActionFunction, Decl(noInferVsDistributiveConditionalType2.ts, 49, 10)) | ||
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TExpressionEvent extends EventObject, | ||
>TExpressionEvent : Symbol(TExpressionEvent, Decl(noInferVsDistributiveConditionalType2.ts, 51, 20)) | ||
>EventObject : Symbol(EventObject, Decl(noInferVsDistributiveConditionalType2.ts, 0, 0)) | ||
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TEvent extends EventObject, | ||
>TEvent : Symbol(TEvent, Decl(noInferVsDistributiveConditionalType2.ts, 52, 39)) | ||
>EventObject : Symbol(EventObject, Decl(noInferVsDistributiveConditionalType2.ts, 0, 0)) | ||
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> = { | ||
(args: { event: TExpressionEvent }): void; | ||
>args : Symbol(args, Decl(noInferVsDistributiveConditionalType2.ts, 55, 3)) | ||
>event : Symbol(event, Decl(noInferVsDistributiveConditionalType2.ts, 55, 10)) | ||
>TExpressionEvent : Symbol(TExpressionEvent, Decl(noInferVsDistributiveConditionalType2.ts, 51, 20)) | ||
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_out_TEvent?: TEvent; | ||
>_out_TEvent : Symbol(_out_TEvent, Decl(noInferVsDistributiveConditionalType2.ts, 55, 44)) | ||
>TEvent : Symbol(TEvent, Decl(noInferVsDistributiveConditionalType2.ts, 52, 39)) | ||
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}; | ||
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type TransitionsConfig<TEvent extends EventObject> = { | ||
>TransitionsConfig : Symbol(TransitionsConfig, Decl(noInferVsDistributiveConditionalType2.ts, 57, 2)) | ||
>TEvent : Symbol(TEvent, Decl(noInferVsDistributiveConditionalType2.ts, 59, 23)) | ||
>EventObject : Symbol(EventObject, Decl(noInferVsDistributiveConditionalType2.ts, 0, 0)) | ||
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[K in EventDescriptor<TEvent>]?: { | ||
>K : Symbol(K, Decl(noInferVsDistributiveConditionalType2.ts, 60, 3)) | ||
>EventDescriptor : Symbol(EventDescriptor, Decl(noInferVsDistributiveConditionalType2.ts, 24, 12)) | ||
>TEvent : Symbol(TEvent, Decl(noInferVsDistributiveConditionalType2.ts, 59, 23)) | ||
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actions?: ActionFunction<ExtractEvent<TEvent, K>, TEvent>; | ||
>actions : Symbol(actions, Decl(noInferVsDistributiveConditionalType2.ts, 60, 36)) | ||
>ActionFunction : Symbol(ActionFunction, Decl(noInferVsDistributiveConditionalType2.ts, 49, 10)) | ||
>ExtractEvent : Symbol(ExtractEvent, Decl(noInferVsDistributiveConditionalType2.ts, 35, 16)) | ||
>TEvent : Symbol(TEvent, Decl(noInferVsDistributiveConditionalType2.ts, 59, 23)) | ||
>K : Symbol(K, Decl(noInferVsDistributiveConditionalType2.ts, 60, 3)) | ||
>TEvent : Symbol(TEvent, Decl(noInferVsDistributiveConditionalType2.ts, 59, 23)) | ||
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}; | ||
}; | ||
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declare function createMachine<TEvent extends EventObject>(config: { | ||
>createMachine : Symbol(createMachine, Decl(noInferVsDistributiveConditionalType2.ts, 63, 2)) | ||
>TEvent : Symbol(TEvent, Decl(noInferVsDistributiveConditionalType2.ts, 65, 31)) | ||
>EventObject : Symbol(EventObject, Decl(noInferVsDistributiveConditionalType2.ts, 0, 0)) | ||
>config : Symbol(config, Decl(noInferVsDistributiveConditionalType2.ts, 65, 59)) | ||
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types?: { | ||
>types : Symbol(types, Decl(noInferVsDistributiveConditionalType2.ts, 65, 68)) | ||
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events?: TEvent; | ||
>events : Symbol(events, Decl(noInferVsDistributiveConditionalType2.ts, 66, 11)) | ||
>TEvent : Symbol(TEvent, Decl(noInferVsDistributiveConditionalType2.ts, 65, 31)) | ||
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}; | ||
on?: TransitionsConfig<NoInfer<TEvent>>; | ||
>on : Symbol(on, Decl(noInferVsDistributiveConditionalType2.ts, 68, 4)) | ||
>TransitionsConfig : Symbol(TransitionsConfig, Decl(noInferVsDistributiveConditionalType2.ts, 57, 2)) | ||
>NoInfer : Symbol(NoInfer, Decl(lib.es5.d.ts, --, --)) | ||
>TEvent : Symbol(TEvent, Decl(noInferVsDistributiveConditionalType2.ts, 65, 31)) | ||
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}): void; | ||
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createMachine({ | ||
>createMachine : Symbol(createMachine, Decl(noInferVsDistributiveConditionalType2.ts, 63, 2)) | ||
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types: { | ||
>types : Symbol(types, Decl(noInferVsDistributiveConditionalType2.ts, 72, 15)) | ||
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events: {} as { type: "FOO" } | { type: "BAR" }, | ||
>events : Symbol(events, Decl(noInferVsDistributiveConditionalType2.ts, 73, 10)) | ||
>type : Symbol(type, Decl(noInferVsDistributiveConditionalType2.ts, 74, 19)) | ||
>type : Symbol(type, Decl(noInferVsDistributiveConditionalType2.ts, 74, 37)) | ||
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}, | ||
on: { | ||
>on : Symbol(on, Decl(noInferVsDistributiveConditionalType2.ts, 75, 4)) | ||
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FOO: { | ||
>FOO : Symbol(FOO, Decl(noInferVsDistributiveConditionalType2.ts, 76, 7)) | ||
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actions: ({ event }) => { | ||
>actions : Symbol(actions, Decl(noInferVsDistributiveConditionalType2.ts, 77, 10)) | ||
>event : Symbol(event, Decl(noInferVsDistributiveConditionalType2.ts, 78, 17)) | ||
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event; // { type: "FOO"; } | ||
>event : Symbol(event, Decl(noInferVsDistributiveConditionalType2.ts, 78, 17)) | ||
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}, | ||
}, | ||
}, | ||
}); | ||
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208 changes: 208 additions & 0 deletions
208
tests/baselines/reference/noInferVsDistributiveConditionalType2.types
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//// [tests/cases/conformance/types/typeRelationships/typeInference/noInferVsDistributiveConditionalType2.ts] //// | ||
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=== noInferVsDistributiveConditionalType2.ts === | ||
type EventObject = { | ||
>EventObject : EventObject | ||
> : ^^^^^^^^^^^ | ||
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type: string; | ||
>type : string | ||
> : ^^^^^^ | ||
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}; | ||
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type FooEvent = { type: "FOO" }; | ||
>FooEvent : FooEvent | ||
> : ^^^^^^^^ | ||
>type : "FOO" | ||
> : ^^^^^ | ||
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type BarEvent = { type: "BAR" }; | ||
>BarEvent : BarEvent | ||
> : ^^^^^^^^ | ||
>type : "BAR" | ||
> : ^^^^^ | ||
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type Input = FooEvent | BarEvent; | ||
>Input : Input | ||
> : ^^^^^ | ||
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type ExtractEventSimplified< | ||
>ExtractEventSimplified : ExtractEventSimplified<TEvent, K> | ||
> : ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ | ||
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TEvent extends EventObject, | ||
K extends TEvent["type"], | ||
> = string extends TEvent["type"] ? TEvent : Extract<TEvent, { type: K }>; | ||
>type : K | ||
> : ^ | ||
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type Result = ExtractEventSimplified<NoInfer<Input>, "FOO">; | ||
>Result : FooEvent | ||
> : ^^^^^^^^ | ||
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type EventDescriptorMatches< | ||
>EventDescriptorMatches : EventDescriptorMatches<TEventType, TNormalizedDescriptor> | ||
> : ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ | ||
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TEventType extends string, | ||
TNormalizedDescriptor, | ||
> = TEventType extends TNormalizedDescriptor ? true : false; | ||
>true : true | ||
> : ^^^^ | ||
>false : false | ||
> : ^^^^^ | ||
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type PartialEventDescriptor<TEventType extends string> = | ||
>PartialEventDescriptor : PartialEventDescriptor<TEventType> | ||
> : ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ | ||
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TEventType extends `${infer TLeading}.${infer TTail}` | ||
? `${TLeading}.*` | `${TLeading}.${PartialEventDescriptor<TTail>}` | ||
: never; | ||
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type EventDescriptor<TEvent extends EventObject> = | ||
>EventDescriptor : EventDescriptor<TEvent> | ||
> : ^^^^^^^^^^^^^^^^^^^^^^^ | ||
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| TEvent["type"] | ||
| PartialEventDescriptor<TEvent["type"]> | ||
| "*"; | ||
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type NormalizeDescriptor<TDescriptor extends string> = TDescriptor extends "*" | ||
>NormalizeDescriptor : NormalizeDescriptor<TDescriptor> | ||
> : ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ | ||
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? string | ||
: TDescriptor extends `${infer TLeading}.*` | ||
? `${TLeading}.${string}` | ||
: TDescriptor; | ||
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type ExtractEvent< | ||
>ExtractEvent : ExtractEvent<TEvent, TDescriptor> | ||
> : ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ | ||
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TEvent extends EventObject, | ||
TDescriptor extends EventDescriptor<TEvent>, | ||
> = string extends TEvent["type"] | ||
? TEvent | ||
: NormalizeDescriptor<TDescriptor> extends infer TNormalizedDescriptor | ||
? TEvent extends any | ||
? // true is the check type here to match both true and boolean | ||
true extends EventDescriptorMatches<TEvent["type"], TNormalizedDescriptor> | ||
>true : true | ||
> : ^^^^ | ||
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? TEvent | ||
: never | ||
: never | ||
: never; | ||
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type ActionFunction< | ||
>ActionFunction : ActionFunction<TExpressionEvent, TEvent> | ||
> : ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ | ||
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TExpressionEvent extends EventObject, | ||
TEvent extends EventObject, | ||
> = { | ||
(args: { event: TExpressionEvent }): void; | ||
>args : { event: TExpressionEvent; } | ||
> : ^^^^^^^^^ ^^^ | ||
>event : TExpressionEvent | ||
> : ^^^^^^^^^^^^^^^^ | ||
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_out_TEvent?: TEvent; | ||
>_out_TEvent : TEvent | undefined | ||
> : ^^^^^^^^^^^^^^^^^^ | ||
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}; | ||
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type TransitionsConfig<TEvent extends EventObject> = { | ||
>TransitionsConfig : TransitionsConfig<TEvent> | ||
> : ^^^^^^^^^^^^^^^^^^^^^^^^^ | ||
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[K in EventDescriptor<TEvent>]?: { | ||
actions?: ActionFunction<ExtractEvent<TEvent, K>, TEvent>; | ||
>actions : ActionFunction<ExtractEvent<TEvent, K>, TEvent> | undefined | ||
> : ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ | ||
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}; | ||
}; | ||
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declare function createMachine<TEvent extends EventObject>(config: { | ||
>createMachine : <TEvent extends EventObject>(config: { types?: { events?: TEvent; }; on?: TransitionsConfig<NoInfer<TEvent>>; }) => void | ||
> : ^ ^^^^^^^^^ ^^ ^^ ^^^^^ | ||
>config : { types?: { events?: TEvent; }; on?: TransitionsConfig<NoInfer<TEvent>>; } | ||
> : ^^^^^^^^^^ ^^^^^^^ ^^^ | ||
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types?: { | ||
>types : { events?: TEvent; } | undefined | ||
> : ^^^^^^^^^^^ ^^^^^^^^^^^^^^^ | ||
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events?: TEvent; | ||
>events : TEvent | undefined | ||
> : ^^^^^^^^^^^^^^^^^^ | ||
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}; | ||
on?: TransitionsConfig<NoInfer<TEvent>>; | ||
>on : TransitionsConfig<NoInfer<TEvent>> | undefined | ||
> : ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ | ||
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}): void; | ||
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createMachine({ | ||
>createMachine({ types: { events: {} as { type: "FOO" } | { type: "BAR" }, }, on: { FOO: { actions: ({ event }) => { event; // { type: "FOO"; } }, }, },}) : void | ||
> : ^^^^ | ||
>createMachine : <TEvent extends EventObject>(config: { types?: { events?: TEvent; }; on?: TransitionsConfig<NoInfer<TEvent>>; }) => void | ||
> : ^ ^^^^^^^^^ ^^ ^^ ^^^^^ | ||
>{ types: { events: {} as { type: "FOO" } | { type: "BAR" }, }, on: { FOO: { actions: ({ event }) => { event; // { type: "FOO"; } }, }, },} : { types: { events: { type: "FOO"; } | { type: "BAR"; }; }; on: { FOO: { actions: ({ event }: { event: { type: "FOO"; }; }) => void; }; }; } | ||
> : ^^^^^^^^^^^^^^^^^^^ ^^^^^^^^^^^^^^^^^^^^^^^^^^^^ ^^^^^^^^^^^^^^^^^^^ ^^^^^^^^^^^^^^^^^^^^^^^^ | ||
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types: { | ||
>types : { events: { type: "FOO"; } | { type: "BAR"; }; } | ||
> : ^^^^^^^^^^ ^^^ | ||
>{ events: {} as { type: "FOO" } | { type: "BAR" }, } : { events: { type: "FOO"; } | { type: "BAR"; }; } | ||
> : ^^^^^^^^^^ ^^^ | ||
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events: {} as { type: "FOO" } | { type: "BAR" }, | ||
>events : { type: "FOO"; } | { type: "BAR"; } | ||
> : ^^^^^^^^ ^^^^^^^^^^^^^^ ^^^ | ||
>{} as { type: "FOO" } | { type: "BAR" } : { type: "FOO"; } | { type: "BAR"; } | ||
> : ^^^^^^^^ ^^^^^^^^^^^^^^ ^^^ | ||
>{} : {} | ||
> : ^^ | ||
>type : "FOO" | ||
> : ^^^^^ | ||
>type : "BAR" | ||
> : ^^^^^ | ||
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}, | ||
on: { | ||
>on : { FOO: { actions: ({ event }: { event: { type: "FOO"; }; }) => void; }; } | ||
> : ^^^^^^^^^^^^^^^^^^^ ^^^^^^^^^^^^^^^^^^^ ^^^^^^^^^^^^^^^^^^^^^ | ||
>{ FOO: { actions: ({ event }) => { event; // { type: "FOO"; } }, }, } : { FOO: { actions: ({ event }: { event: { type: "FOO"; }; }) => void; }; } | ||
> : ^^^^^^^^^^^^^^^^^^^ ^^^^^^^^^^^^^^^^^^^ ^^^^^^^^^^^^^^^^^^^^^ | ||
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FOO: { | ||
>FOO : { actions: ({ event }: { event: { type: "FOO"; }; }) => void; } | ||
> : ^^^^^^^^^^^^ ^^^^^^^^^^^^^^^^^^^ ^^^^^^^^^^^^^^^^^^ | ||
>{ actions: ({ event }) => { event; // { type: "FOO"; } }, } : { actions: ({ event }: { event: { type: "FOO"; }; }) => void; } | ||
> : ^^^^^^^^^^^^ ^^^^^^^^^^^^^^^^^^^ ^^^^^^^^^^^^^^^^^^ | ||
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actions: ({ event }) => { | ||
>actions : ({ event }: { event: { type: "FOO"; }; }) => void | ||
> : ^ ^^^^^^^^^^^^^^^^^^^ ^^^^^^^^^^^^^^^ | ||
>({ event }) => { event; // { type: "FOO"; } } : ({ event }: { event: { type: "FOO"; }; }) => void | ||
> : ^ ^^^^^^^^^^^^^^^^^^^ ^^^^^^^^^^^^^^^ | ||
>event : { type: "FOO"; } | ||
> : ^^^^^^^^ ^^^ | ||
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event; // { type: "FOO"; } | ||
>event : { type: "FOO"; } | ||
> : ^^^^^^^^ ^^^ | ||
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}, | ||
}, | ||
}, | ||
}); | ||
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...onformance/types/typeRelationships/typeInference/noInferVsDistributiveConditionalType2.ts
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// @strict: true | ||
// @noEmit: true | ||
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type EventObject = { | ||
type: string; | ||
}; | ||
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type FooEvent = { type: "FOO" }; | ||
type BarEvent = { type: "BAR" }; | ||
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type Input = FooEvent | BarEvent; | ||
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type ExtractEventSimplified< | ||
TEvent extends EventObject, | ||
K extends TEvent["type"], | ||
> = string extends TEvent["type"] ? TEvent : Extract<TEvent, { type: K }>; | ||
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type Result = ExtractEventSimplified<NoInfer<Input>, "FOO">; | ||
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type EventDescriptorMatches< | ||
TEventType extends string, | ||
TNormalizedDescriptor, | ||
> = TEventType extends TNormalizedDescriptor ? true : false; | ||
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type PartialEventDescriptor<TEventType extends string> = | ||
TEventType extends `${infer TLeading}.${infer TTail}` | ||
? `${TLeading}.*` | `${TLeading}.${PartialEventDescriptor<TTail>}` | ||
: never; | ||
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type EventDescriptor<TEvent extends EventObject> = | ||
| TEvent["type"] | ||
| PartialEventDescriptor<TEvent["type"]> | ||
| "*"; | ||
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type NormalizeDescriptor<TDescriptor extends string> = TDescriptor extends "*" | ||
? string | ||
: TDescriptor extends `${infer TLeading}.*` | ||
? `${TLeading}.${string}` | ||
: TDescriptor; | ||
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type ExtractEvent< | ||
TEvent extends EventObject, | ||
TDescriptor extends EventDescriptor<TEvent>, | ||
> = string extends TEvent["type"] | ||
? TEvent | ||
: NormalizeDescriptor<TDescriptor> extends infer TNormalizedDescriptor | ||
? TEvent extends any | ||
? // true is the check type here to match both true and boolean | ||
true extends EventDescriptorMatches<TEvent["type"], TNormalizedDescriptor> | ||
? TEvent | ||
: never | ||
: never | ||
: never; | ||
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type ActionFunction< | ||
TExpressionEvent extends EventObject, | ||
TEvent extends EventObject, | ||
> = { | ||
(args: { event: TExpressionEvent }): void; | ||
_out_TEvent?: TEvent; | ||
}; | ||
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type TransitionsConfig<TEvent extends EventObject> = { | ||
[K in EventDescriptor<TEvent>]?: { | ||
actions?: ActionFunction<ExtractEvent<TEvent, K>, TEvent>; | ||
}; | ||
}; | ||
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declare function createMachine<TEvent extends EventObject>(config: { | ||
types?: { | ||
events?: TEvent; | ||
}; | ||
on?: TransitionsConfig<NoInfer<TEvent>>; | ||
}): void; | ||
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createMachine({ | ||
types: { | ||
events: {} as { type: "FOO" } | { type: "BAR" }, | ||
}, | ||
on: { | ||
FOO: { | ||
actions: ({ event }) => { | ||
event; // { type: "FOO"; } | ||
}, | ||
}, | ||
}, | ||
}); |