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54 lines (50 loc) · 1.99 KB
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import { IObservableArray, IArrayChange, IArraySplice } from "../types/observablearray"
import { ObservableMap, IMapDidChange } from "../types/observablemap"
import { IObjectDidChange } from "../types/observableobject"
import { IComputedValue } from "../core/computedvalue"
import { IObservableValue, IValueDidChange } from "../types/observablevalue"
import { Lambda } from "../utils/utils"
import { getAdministration } from "../types/type-utils"
export function observe<T>(
value: IObservableValue<T> | IComputedValue<T>,
listener: (change: IValueDidChange<T>) => void,
fireImmediately?: boolean
): Lambda
export function observe<T>(
observableArray: IObservableArray<T>,
listener: (change: IArrayChange<T> | IArraySplice<T>) => void,
fireImmediately?: boolean
): Lambda
export function observe<K, V>(
observableMap: ObservableMap<K, V>,
listener: (change: IMapDidChange<K, V>) => void,
fireImmediately?: boolean
): Lambda
export function observe<K, V>(
observableMap: ObservableMap<K, V>,
property: K,
listener: (change: IValueDidChange<V>) => void,
fireImmediately?: boolean
): Lambda
export function observe(
object: Object,
listener: (change: IObjectDidChange) => void,
fireImmediately?: boolean
): Lambda
export function observe<T, K extends keyof T>(
object: T,
property: K,
listener: (change: IValueDidChange<T[K]>) => void,
fireImmediately?: boolean
): Lambda
export function observe(thing, propOrCb?, cbOrFire?, fireImmediately?): Lambda {
if (typeof cbOrFire === "function")
return observeObservableProperty(thing, propOrCb, cbOrFire, fireImmediately)
else return observeObservable(thing, propOrCb, cbOrFire)
}
function observeObservable(thing, listener, fireImmediately: boolean) {
return getAdministration(thing).observe(listener, fireImmediately)
}
function observeObservableProperty(thing, property, listener, fireImmediately: boolean) {
return getAdministration(thing, property).observe(listener, fireImmediately)
}