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// tslint:disable-next-line:no-empty
const deprecateContext = deprecate(() => {}, 'Hook.context is deprecated and will be removed')
class Hook {
// use to cache origin call func
public _call: (...args: any[]) => any
// use to cache call tap func
public call: (...args: any[]) => any
// use to cache origin call func
public _callAsync: (...args: any[]) => any
// use to cache call tapAsync func
public callAsync: (...args: any[]) => any
// use to cache origin call func
public _promise: (...args: any[]) => Promise<any>
// use to cache call tapPromise func
public promise: (...args: any[]) => Promise<any>
// use to cache arguments for tap function
private _args: string[]
// use to cache hook's name
private name: string
// use to cache taps function
private taps: HooksTapsItem[]
constructor(args: string[], name?: string) {
this._args = args || []
this.name = name || ''
this.taps = []
this._call = function (..._args: any[]) {
// @ts-ignore
this.call = this._createCall('sync')
return this.call(..._args)
}
this.call = this._call
this._callAsync = function (..._args: any[]) {
// @ts-ignore
this.callAsync = this._createCall('async')
return this.callAsync(..._args)
}
this.callAsync = this._callAsync
this._promise = function (..._args: any[]) {
// @ts-ignore
this.promise = this._createCall('promise')
return this.promise(..._args)
}
this.promise = this._promise
}
// this function is Abstract to Hooks Class
// @ts-ignore
compile(options: HookCompileOptions) {
throw new Error('Abstract: should be overridden')
}
isUsed() {
return this.taps.length > 0
}
withOptions(options: UserTapOptions) {
const mergeOptions = (opt: UserTapOptions): UserTapOptions =>
Object.assign({}, options, typeof opt === 'string' ? { name: opt } : opt)
return {
name: this.name,
tap: (opt: UserTapOptions, fn: () => any) => this.tap(mergeOptions(opt), fn),
tapAsync: (opt: UserTapOptions, fn: () => any) => this.tapAsync(mergeOptions(opt), fn),
tapPromise: (opt: UserTapOptions, fn: () => any) =>
this.tapPromise(mergeOptions(opt), fn),
isUsed: () => this.isUsed(),
withOptions: (opt: UserTapOptions) => this.withOptions(mergeOptions(opt))
}
}
_createCall(type: Types) {
return this.compile({
taps: this.taps,
args: this._args,
type
})
}
_resetCompilation() {
this.call = this._call
this.callAsync = this._callAsync
this.promise = this._promise
}
_insert(item: HooksTapsItem) {
this._resetCompilation()
this.taps.push(item)
}
_tap(type: Types, options: UserTapOptions, fn: (...args: any[]) => any) {
const tapOptions = {
name: '',
context: false
}
if (typeof options === 'string') {
tapOptions.name = options.trim()
} else Iif (typeof options !== 'object' || options === null) {
throw new Error('Invalid tap options')
} else {
Iif (typeof options.name !== 'string' || options.name === '') {
throw new Error('Missing name for tap')
} else {
tapOptions.name = options.name
}
Eif (options.context) {
deprecateContext()
tapOptions.context = options.context
}
}
this._insert({
type,
fn,
...tapOptions
})
}
tap(options: UserTapOptions, fn: (...args: any[]) => any) {
this._tap('sync', options, fn)
}
tapAsync(options: UserTapOptions, fn: (...args: any[]) => any) {
this._tap('async', options, fn)
}
tapPromise(options: UserTapOptions, fn: (...args: any[]) => any) {
this._tap('promise', options, fn)
}
_isRegistered(type: Types, fn: (...args: []) => any): boolean {
const index = this._tapHookIndexOf(type, fn)
return index !== -1
}
_deleteTapHook(type: Types, fn: (...args: []) => any): void {
this._resetCompilation()
this.taps = this.taps.filter((tap) => {
return !(tap.type === type && tap.fn === fn)
})
}
_replaceTapHook(
type: Types,
oldFn: (...args: any[]) => any,
newFn: (...args: []) => any
): boolean {
this._resetCompilation()
let replaced = false
for (const tap of this.taps) {
if (tap.type === type && tap.fn === oldFn) {
replaced = true
tap.fn = newFn
}
}
return replaced
}
_tapHookIndexOf(type: Types, fn: (...args: []) => any): number {
let index = -1
for (let _index = 0; _index < this.taps.length; _index++) {
if (this.taps[_index].fn === fn && this.taps[_index].type === type) {
index = _index
break
}
}
return index
}
}
export default Hook
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