@trpc/server/dist/observable-CUiPknO-.mjs.map

The tRPC server library

{"version":3,"file":"observable-CUiPknO-.mjs","names":["project: (value: TValueBefore, index: number) => TValueAfter","_opts?: ShareConfig","subscription: Unsubscribable | null","observers: Partial<Observer<TValue, TError>>[]","observer: Partial<Observer<TValue, TError>>","compare: (a: TValue, b: TValue) => boolean","lastValue: TValue | typeof distinctUnsetMarker","a: T","b: T","initialValue: TValue","value: TValue","observerList: Observer<TValue, never>[]","observer: Observer<TValue, never>","nextValue: TValue"],"sources":["../src/observable/operators.ts","../src/observable/behaviorSubject.ts"],"sourcesContent":["import { observable } from './observable';\nimport type {\n  MonoTypeOperatorFunction,\n  Observer,\n  OperatorFunction,\n  Unsubscribable,\n} from './types';\n\nexport function map<TValueBefore, TError, TValueAfter>(\n  project: (value: TValueBefore, index: number) => TValueAfter,\n): OperatorFunction<TValueBefore, TError, TValueAfter, TError> {\n  return (source) => {\n    return observable((destination) => {\n      let index = 0;\n      const subscription = source.subscribe({\n        next(value) {\n          destination.next(project(value, index++));\n        },\n        error(error) {\n          destination.error(error);\n        },\n        complete() {\n          destination.complete();\n        },\n      });\n      return subscription;\n    });\n  };\n}\n\ninterface ShareConfig {}\nexport function share<TValue, TError>(\n  _opts?: ShareConfig,\n): MonoTypeOperatorFunction<TValue, TError> {\n  return (source) => {\n    let refCount = 0;\n\n    let subscription: Unsubscribable | null = null;\n    const observers: Partial<Observer<TValue, TError>>[] = [];\n\n    function startIfNeeded() {\n      if (subscription) {\n        return;\n      }\n      subscription = source.subscribe({\n        next(value) {\n          for (const observer of observers) {\n            observer.next?.(value);\n          }\n        },\n        error(error) {\n          for (const observer of observers) {\n            observer.error?.(error);\n          }\n        },\n        complete() {\n          for (const observer of observers) {\n            observer.complete?.();\n          }\n        },\n      });\n    }\n    function resetIfNeeded() {\n      // \"resetOnRefCountZero\"\n      if (refCount === 0 && subscription) {\n        const _sub = subscription;\n        subscription = null;\n        _sub.unsubscribe();\n      }\n    }\n\n    return observable((subscriber) => {\n      refCount++;\n\n      observers.push(subscriber);\n      startIfNeeded();\n      return {\n        unsubscribe() {\n          refCount--;\n          resetIfNeeded();\n\n          const index = observers.findIndex((v) => v === subscriber);\n\n          if (index > -1) {\n            observers.splice(index, 1);\n          }\n        },\n      };\n    });\n  };\n}\n\nexport function tap<TValue, TError>(\n  observer: Partial<Observer<TValue, TError>>,\n): MonoTypeOperatorFunction<TValue, TError> {\n  return (source) => {\n    return observable((destination) => {\n      return source.subscribe({\n        next(value) {\n          observer.next?.(value);\n          destination.next(value);\n        },\n        error(error) {\n          observer.error?.(error);\n          destination.error(error);\n        },\n        complete() {\n          observer.complete?.();\n          destination.complete();\n        },\n      });\n    });\n  };\n}\n\nconst distinctUnsetMarker = Symbol();\nexport function distinctUntilChanged<TValue, TError>(\n  compare: (a: TValue, b: TValue) => boolean = (a, b) => a === b,\n): MonoTypeOperatorFunction<TValue, TError> {\n  return (source) => {\n    return observable((destination) => {\n      let lastValue: TValue | typeof distinctUnsetMarker = distinctUnsetMarker;\n\n      return source.subscribe({\n        next(value) {\n          if (lastValue !== distinctUnsetMarker && compare(lastValue, value)) {\n            return;\n          }\n          lastValue = value;\n          destination.next(value);\n        },\n        error(error) {\n          destination.error(error);\n        },\n        complete() {\n          destination.complete();\n        },\n      });\n    });\n  };\n}\n\nconst isDeepEqual = <T>(a: T, b: T): boolean => {\n  if (a === b) {\n    return true;\n  }\n  const bothAreObjects =\n    a && b && typeof a === 'object' && typeof b === 'object';\n\n  return (\n    !!bothAreObjects &&\n    Object.keys(a).length === Object.keys(b).length &&\n    Object.entries(a).every(([k, v]) => isDeepEqual(v, b[k as keyof T]))\n  );\n};\nexport function distinctUntilDeepChanged<\n  TValue,\n  TError,\n>(): MonoTypeOperatorFunction<TValue, TError> {\n  return distinctUntilChanged(isDeepEqual);\n}\n","import { observable } from './observable';\nimport type { Observable, Observer } from './types';\n\nexport interface BehaviorSubject<TValue> extends Observable<TValue, never> {\n  observable: Observable<TValue, never>;\n  next: (value: TValue) => void;\n  get: () => TValue;\n}\n\nexport interface ReadonlyBehaviorSubject<TValue>\n  extends Omit<BehaviorSubject<TValue>, 'next'> {}\n\n/**\n * @internal\n * An observable that maintains and provides a \"current value\" to subscribers\n * @see https://www.learnrxjs.io/learn-rxjs/subjects/behaviorsubject\n */\nexport function behaviorSubject<TValue>(\n  initialValue: TValue,\n): BehaviorSubject<TValue> {\n  let value: TValue = initialValue;\n\n  const observerList: Observer<TValue, never>[] = [];\n\n  const addObserver = (observer: Observer<TValue, never>) => {\n    if (value !== undefined) {\n      observer.next(value);\n    }\n    observerList.push(observer);\n  };\n  const removeObserver = (observer: Observer<TValue, never>) => {\n    observerList.splice(observerList.indexOf(observer), 1);\n  };\n\n  const obs = observable<TValue, never>((observer) => {\n    addObserver(observer);\n    return () => {\n      removeObserver(observer);\n    };\n  }) as BehaviorSubject<TValue>;\n\n  obs.next = (nextValue: TValue) => {\n    if (value === nextValue) {\n      return;\n    }\n    value = nextValue;\n    for (const observer of observerList) {\n      observer.next(nextValue);\n    }\n  };\n\n  obs.get = () => value;\n\n  return 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