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70 lines (58 loc) · 2.45 KB
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export interface IEnhancer<T> {
(newValue: T, oldValue: T | undefined, name: string): T
}
export function deepEnhancer(v, _, name) {
// it is an observable already, done
if (isObservable(v)) return v
// something that can be converted and mutated?
if (Array.isArray(v)) return observable.array(v, { name })
if (isPlainObject(v)) return observable.object(v, undefined, { name })
if (isES6Map(v)) return observable.map(v, { name })
return v
}
export function shallowEnhancer(v, _, name): any {
if (v === undefined || v === null) return v
if (isObservableObject(v) || isObservableArray(v) || isObservableMap(v)) return v
if (Array.isArray(v)) return observable.array(v, { name, deep: false })
if (isPlainObject(v)) return observable.object(v, undefined, { name, deep: false })
if (isES6Map(v)) return observable.map(v, { name, deep: false })
return fail(
process.env.NODE_ENV !== "production" &&
"The shallow modifier / decorator can only used in combination with arrays, objects and maps"
)
}
export function referenceEnhancer(newValue?) {
// never turn into an observable
return newValue
}
export function deepStructEnhancer(v, oldValue, name): any {
// don't confuse structurally compare enhancer with ref enhancer! The latter is probably
// more suited for immutable objects
if (deepEqual(v, oldValue)) return oldValue
// it is an observable already, done
if (isObservable(v)) return v
// something that can be converted and mutated?
if (Array.isArray(v)) return new ObservableArray(v, deepStructEnhancer, name)
if (isES6Map(v)) return new ObservableMap(v, deepStructEnhancer, name)
if (isPlainObject(v)) {
const res = {}
extendObservable(res, v, undefined, {
name,
defaultDecorator: observable.struct
})
return res
}
return v
}
export function refStructEnhancer(v, oldValue, name): any {
if (deepEqual(v, oldValue)) return oldValue
return v
}
import { observable } from "../api/observable"
import { isObservable } from "../api/isobservable"
import { extendObservable } from "../api/extendobservable"
import { fail, isPlainObject, isES6Map } from "../utils/utils"
import { isObservableObject } from "./observableobject"
import { isObservableArray, ObservableArray } from "./observablearray"
import { isObservableMap, ObservableMap } from "./observablemap"
import { deepEqual } from "../utils/eq"