/
createSetupApi.ts
111 lines (99 loc) · 3.28 KB
/
createSetupApi.ts
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import {
BatchInterceptor,
HttpRequestEventMap,
Interceptor,
} from '@mswjs/interceptors'
import { EventMapType, StrictEventEmitter } from 'strict-event-emitter'
import {
DefaultBodyType,
RequestHandler,
RequestHandlerDefaultInfo,
} from './handlers/RequestHandler'
import { LifeCycleEventEmitter } from './sharedOptions'
import { devUtils } from './utils/internal/devUtils'
import { pipeEvents } from './utils/internal/pipeEvents'
import { toReadonlyArray } from './utils/internal/toReadonlyArray'
import { MockedRequest } from './utils/request/MockedRequest'
/**
* Generic class for the mock API setup
*/
export abstract class SetupApi<TLifecycleEventsMap extends EventMapType> {
protected readonly initialHandlers: RequestHandler[]
protected readonly interceptor: BatchInterceptor<
Interceptor<HttpRequestEventMap>[],
HttpRequestEventMap
>
protected readonly emitter = new StrictEventEmitter<TLifecycleEventsMap>()
protected readonly publicEmitter =
new StrictEventEmitter<TLifecycleEventsMap>()
protected currentHandlers: RequestHandler[]
public readonly events: LifeCycleEventEmitter<Record<string | symbol, any>>
constructor(
interceptors: {
new (): Interceptor<HttpRequestEventMap>
}[],
readonly interceptorName: string,
initialHandlers: RequestHandler[],
) {
initialHandlers.forEach((handler) => {
if (Array.isArray(handler))
throw new Error(
devUtils.formatMessage(
`Failed to call "${this.constructor.name}" given an Array of request handlers (${this.constructor.name}([a, b])), expected to receive each handler individually: ${this.constructor.name}(a, b).`,
),
)
})
this.interceptor = new BatchInterceptor({
name: interceptorName,
interceptors: interceptors.map((Interceptor) => new Interceptor()),
})
this.initialHandlers = [...initialHandlers]
this.currentHandlers = [...initialHandlers]
pipeEvents(this.emitter, this.publicEmitter)
this.events = this.registerEvents()
}
protected apply(): void {
this.interceptor.apply()
}
protected dispose(): void {
this.emitter.removeAllListeners()
this.publicEmitter.removeAllListeners()
this.interceptor.dispose()
}
public use(...runtimeHandlers: RequestHandler[]): void {
this.currentHandlers.unshift(...runtimeHandlers)
}
public restoreHandlers(): void {
this.currentHandlers.forEach((handler) => {
handler.markAsSkipped(false)
})
}
public resetHandlers(...nextHandlers: RequestHandler[]) {
this.currentHandlers =
nextHandlers.length > 0 ? [...nextHandlers] : [...this.initialHandlers]
}
public listHandlers(): ReadonlyArray<
RequestHandler<
RequestHandlerDefaultInfo,
MockedRequest<DefaultBodyType>,
any,
MockedRequest<DefaultBodyType>
>
> {
return toReadonlyArray(this.currentHandlers)
}
private registerEvents(): LifeCycleEventEmitter<TLifecycleEventsMap> {
return {
on: (...args) => {
return this.publicEmitter.on(...args)
},
removeListener: (...args) => {
return this.publicEmitter.removeListener(...args)
},
removeAllListeners: (...args: any) => {
return this.publicEmitter.removeAllListeners(...args)
},
}
}
abstract printHandlers(): void
}