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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,83 @@ | ||
| import { dev } from '$app/environment'; | ||
| import { PendingValue } from '$houdini'; | ||
|
|
||
| /** | ||
| * To develop a loading state, set this to true | ||
| * WARNING: NEVER LEAVE THIS TRUE WHEN COMITTING | ||
| * TODO: Add a CI check that makes sure this is false | ||
| */ | ||
| const SIMULATE_LOADING_STATE = false; | ||
|
|
||
| function simulatingLoadingState(): boolean { | ||
| // Safeguard to prevent simulating loading states on production | ||
| return dev && SIMULATE_LOADING_STATE; | ||
| } | ||
|
|
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| export type MaybeLoading<T> = T | typeof PendingValue; | ||
|
|
||
| /** | ||
| * Provide a fallback value if the value is PendingValue | ||
| * @param value the value | ||
| * @param fallback the fallback to use if value is PendingValue | ||
| * @returns the value or the fallback | ||
| */ | ||
| export function loading<T>(value: MaybeLoading<T>, fallback: T): T { | ||
| if (simulatingLoadingState()) return fallback; | ||
| return value === PendingValue ? fallback : value; | ||
| } | ||
|
|
||
| type AllLoaded<T> = T extends object | ||
| ? { [K in keyof T]: AllLoaded<T[K]> } | ||
| : T extends unknown[] | ||
| ? AllLoaded<T[number]>[] | ||
| : T extends typeof PendingValue | ||
| ? never | ||
| : T; | ||
|
|
||
| export function loaded<T>(value: MaybeLoading<T>): value is T { | ||
| if (simulatingLoadingState()) return false; | ||
| return value !== PendingValue; | ||
| } | ||
|
|
||
| export function onceLoaded<I, O>(value: MaybeLoading<I>, compute: (loadedValue: I) => O, fallback: O): O { | ||
| return loaded(value) ? compute(value) : fallback; | ||
| } | ||
|
|
||
| export function onceAllLoaded<T extends unknown[], O, FO>( | ||
| values: { [K in keyof T]: MaybeLoading<T[K]> }, | ||
| compute: (...loadedValues: T) => O, | ||
| fallback: FO, | ||
| ): O | FO { | ||
| if (values.every(loaded)) return compute(...(values as T)); | ||
| return fallback; | ||
| } | ||
|
|
||
| // @ts-expect-error don't know how to fix the 'T could be instanciated with a type that is unrelated to AllLoaded' error | ||
| export function allLoaded<T>(value: T): value is AllLoaded<T> { | ||
| if (simulatingLoadingState()) return false; | ||
| if (Array.isArray(value)) return value.every((item) => allLoaded(item)); | ||
| if (typeof value === 'object' && value !== null) return Object.values(value).every((item) => allLoaded(item)); | ||
|
|
||
| return loaded(value); | ||
| } | ||
|
|
||
| export function mapLoading<T, O>(value: MaybeLoading<T>, mapping: (value: T) => O): MaybeLoading<O> { | ||
| if (loaded(value)) return mapping(value); | ||
| return PendingValue; | ||
| } | ||
|
|
||
| export const LOREM_IPSUM = `Lorem ipsum dolor sit amet. A impedit beatae sed nostrum voluptatem | ||
| ut omnis aliquid et galisum quaerat. Est sunt voluptatem aut porro iste et tempora voluptatem | ||
| aut pariatur minima sed omnis cumque est iusto fugit vel rerum magni. 33 ducimus nesciunt ut | ||
| consequuntur esse nam necessitatibus tempore sit suscipit voluptatibus qui rerum earum non autem | ||
| doloribus. Rem itaque esse est nostrum optio id repellat recusandae et ipsa quis. | ||
| Aut odio ipsa sed autem esse ut autem error qui voluptates perspiciatis aut officiis consequuntur | ||
| sit amet nihil. Eos delectus consequatur sit natus iure qui omnis omnis ea illum distinctio et | ||
| quos quidem. Et nisi autem est rerum eius ut dolorum commodi et temporibus expedita ea dolorem | ||
| error ad asperiores facilis ad numquam libero. Aut suscipit maxime sit explicabo dolorem est | ||
| accusantium enim et repudiandae omnis cum dolorem nemo id quia facilis. | ||
| Et dolorem perferendis et rerum suscipit qui voluptatibus quia et nihil nostrum 33 omnis soluta. | ||
| Nam minus minima et perspiciatis velit et eveniet rerum et nihil voluptates aut eaque ipsa et | ||
| ratione facere!`; |
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