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const __FastEvent__ = Symbol.for(\"__FastEvent__\");\nexport const __FastEventScope__ = Symbol.for(\"__FastEventScope__\");\nexport class FastEventError extends Error {\n constructor(message?: string) {\n super(message);\n }\n}\n\nexport class TimeoutError extends FastEventError {}\n// 当Scope没有绑定到了Emitter时提示这个错误\nexport class UnboundError extends FastEventError {}\nexport class AbortError extends FastEventError {}\nexport class CancelError extends FastEventError {}\nexport class QueueOverflowError extends FastEventError {}\n","export function isFunction(fn: any): fn is Function {\n return fn && typeof (fn) == \"function\"\n}","import { QueueOverflowError } from \"../consts\";\nimport { TypedFastEventMessage } from \"../types/FastEventMessages\";\nimport { TypedFastEventListener } from \"../types/FastEventListeners\";\nimport { FastEventListenerArgs } from \"../types/FastEvents\";\nimport { isFunction } from \"../utils/isFunction\";\nimport { FastListenerPipe } from \"./types\";\n\nexport interface FastEventListenerDecorators {\n queue: string;\n}\nexport type FastQueuePriority = \"none\";\n\nexport type FastQueueOverflows =\n | \"drop\" // 当缓冲区满时,丢弃新消息\n | \"expand\" // 当缓冲区满时,扩展缓冲区，每次扩展size，直到缓冲区大小达到maxSize\n | \"slide\" // 当缓冲区满时,将缓冲区中的消息向前移动,丢弃旧的消息\n | \"throw\"; // 当缓冲区满时,抛出异常\n\nexport type QueueListenerPipeOptions = {\n size?: number; // 缓冲区默认大小\n maxExpandSize?: number; // 缓冲区扩展到到多大时不再扩展\n expandOverflow?: Omit;\n overflow?: FastQueueOverflows;\n // =0不启用此机制，当消息在队列中的时间到达lifetime（ms）后，自动丢弃\n lifetime?: number;\n // 当新消息到达时触发此回调，可以用来处理新消息，转让默认是采用push操作\n onPush?: (\n newMessage: TypedFastEventMessage,\n messages: [TypedFastEventMessage, number][],\n ) => void;\n // 当消息被弹出时触发此回调，可以在此消息队列进行排序等操作\n // hasNew: 自上次pop弹出消息后，是否有新的消息入列\n onPop?: (\n messages: [TypedFastEventMessage, number][],\n hasNew: boolean,\n ) => [TypedFastEventMessage, number] | undefined;\n // 当消息被丢弃时触发此回调\n onDrop?: (message: TypedFastEventMessage) => void;\n};\n\nexport const queue = (options?: QueueListenerPipeOptions): FastListenerPipe => {\n const { lifetime, size, overflow, maxExpandSize, expandOverflow, onPush, onDrop, onPop } =\n Object.assign(\n {\n size: 10,\n maxExpandSize: 100,\n overflow: \"expand\",\n expandOverflow: \"slide\",\n lifetime: 0,\n },\n options,\n );\n\n let buffer: [TypedFastEventMessage, number][] = [];\n let currentSize = size; // 当前缓冲区大小\n let isHandling = false; // 是否正在处理缓冲区中的消息\n let hasNewMessage: boolean = false;\n\n const pushMessage = (message: TypedFastEventMessage) => {\n if (isFunction(onPush)) {\n onPush(message, buffer);\n } else {\n buffer.push(lifetime > 0 ? [message, Date.now()] : [message, 0]);\n }\n };\n\n const handleOverflow = (message: TypedFastEventMessage): boolean => {\n // 如果已达到最大大小且当前策略为expand，使用expandOverflow策略\n const strategy =\n buffer.length >= maxExpandSize && overflow === \"expand\" ? expandOverflow : overflow;\n switch (strategy) {\n case \"drop\":\n if (isFunction(onDrop)) onDrop(message);\n return false;\n case \"expand\":\n currentSize = Math.min(currentSize + size, maxExpandSize);\n pushMessage(message);\n return true;\n case \"slide\":\n const msg = buffer.shift(); // 移除最旧的消息\n if (isFunction(onDrop) && msg) onDrop(msg[0]);\n pushMessage(message);\n return true;\n case \"throw\":\n if (isFunction(onDrop)) onDrop(message);\n throw new QueueOverflowError();\n default:\n return false;\n }\n };\n return (listener: TypedFastEventListener): TypedFastEventListener => {\n return async function (message: TypedFastEventMessage, args: FastEventListenerArgs) {\n hasNewMessage = true;\n if (isHandling) {\n // 如果正在处理消息，尝试将新消息添加到缓冲区\n if (buffer.length < currentSize) {\n pushMessage(message);\n } else {\n handleOverflow(message);\n }\n return;\n }\n // 如果没有正在处理的消息，先处理当前消息\n isHandling = true;\n try {\n await listener.call(this, message, args);\n // 处理缓冲区中的消息\n while (buffer.length > 0) {\n let nextMessage, enterTime;\n // 从队列中弹出消息进行处理\n if (hasNewMessage && isFunction(onPop)) {\n [nextMessage, enterTime] = onPop(buffer, hasNewMessage) || [undefined, 0];\n hasNewMessage = false;\n } else {\n [nextMessage, enterTime] = buffer.shift() || [undefined, 0];\n }\n if (nextMessage) {\n // 如果消息在缓冲区中停留的时间超过lifetime，丢弃该消息\n if (lifetime > 0 && Date.now() - enterTime > lifetime) {\n if (isFunction(onDrop)) onDrop(nextMessage);\n continue;\n }\n await listener.call(this, nextMessage, args);\n }\n }\n } finally {\n isHandling = false;\n }\n };\n };\n};\n\nexport const dropping = (size: number = 10) => queue({ size, overflow: \"drop\" });\nexport const sliding = (size: number = 10) => queue({ size, overflow: \"slide\" });\nexport const expanding = (options?: Omit) =>\n queue(\n Object.assign({}, options, { overflow: \"expand\" as QueueListenerPipeOptions[\"overflow\"] }),\n );\n","export const delay = (ms: number) => new Promise((resolve) => setTimeout(resolve, ms));\n","import { TypedFastEventMessage } from \"../types/FastEventMessages\";\nimport { TypedFastEventListener } from \"../types/FastEventListeners\";\nimport { FastEventListenerArgs } from \"../types/FastEvents\";\nimport { isFunction } from \"../utils/isFunction\";\nimport { FastListenerPipe } from \"./types\";\nimport { delay } from \"../utils/delay\";\n\nexport interface RetryListenerPipeOptions {\n retries?: number; // 重试次数\n interval?: number | ((retryCount: number) => number); // 重试间隔，默认1000ms\n drop?: (message: TypedFastEventMessage, error: Error) => void; // 所有重试失败后的回调\n}\n\n/**\n * 创建一个重试管道，在监听器执行失败时自动重试\n * @param retries 最大重试次数\n * @param options 配置选项\n * @returns FastListenerPipe\n */\n\nexport function retry(options?: RetryListenerPipeOptions): FastListenerPipe {\n const { retries, interval, drop } = Object.assign(\n {\n retries: 1,\n interval: 100,\n },\n options,\n );\n\n return (listener: TypedFastEventListener): TypedFastEventListener => {\n return async function (message: TypedFastEventMessage, args: FastEventListenerArgs) {\n let retryCount = 0;\n let lastError: Error | undefined;\n while (retryCount <= retries) {\n try {\n return await listener.call(this, message, args);\n } catch (error) {\n lastError = error as Error;\n retryCount++;\n if (retryCount <= retries) {\n await delay(isFunction(interval) ? interval(retryCount) : interval);\n } else {\n // 所有重试失败，调用drop回调\n if (isFunction(drop)) {\n drop(message, lastError);\n }\n throw lastError;\n }\n }\n }\n };\n };\n}\n","import { TimeoutError } from \"../consts\";\nimport { TypedFastEventMessage } from \"../types/FastEventMessages\";\nimport { TypedFastEventListener } from \"../types/FastEventListeners\";\nimport { FastEventListenerArgs } from \"../types/FastEvents\";\nimport { FastListenerPipe } from \"./types\";\n\n/**\n * 创建一个超时装饰器，限制监听器函数的执行时间\n * @param ms 超时时间（毫秒）\n * @param defaultValue 可选的默认返回值，如果提供则超时时返回此值，否则抛出TimeoutError\n * @returns 装饰器函数\n */\nexport const timeout = (ms: number, defaultValue?: T): FastListenerPipe => {\n return (listener: TypedFastEventListener): TypedFastEventListener => {\n return async function (message: TypedFastEventMessage, args: FastEventListenerArgs) {\n let timeoutId: any;\n\n const timeoutPromise = new Promise((resolve, reject) => {\n timeoutId = setTimeout(() => {\n if (defaultValue !== undefined) {\n resolve(defaultValue);\n } else {\n reject(new TimeoutError());\n }\n }, ms);\n });\n\n const listenerPromise = Promise.resolve(listener.call(this, message, args));\n\n try {\n return await Promise.race([listenerPromise, timeoutPromise]);\n } finally {\n clearTimeout(timeoutId!);\n }\n };\n };\n};\n","import { TypedFastEventMessage } from \"../types/FastEventMessages\";\nimport { TypedFastEventListener } from \"../types/FastEventListeners\";\nimport { FastEventListenerArgs } from \"../types/FastEvents\";\nimport { FastListenerPipe } from \"./types\";\n\nexport interface DebounceOptions {\n /**\n * 当消息被丢弃时的回调函数\n */\n drop?: (message: TypedFastEventMessage) => void;\n}\n\n/**\n * 创建一个防抖动装饰器，限制监听器函数的执行频率\n * @param ms 防抖动时间（毫秒）\n * @param options 可选的配置项\n * @returns 装饰器函数\n */\nexport const debounce = (ms: number, options?: DebounceOptions): FastListenerPipe => {\n return (listener: TypedFastEventListener): TypedFastEventListener => {\n let isBlocked = false;\n let timeoutId: any = null;\n\n return async function (message: TypedFastEventMessage, args: FastEventListenerArgs) {\n // 如果当前处于防抖动时间内，丢弃消息\n if (isBlocked) {\n if (options?.drop) {\n options.drop(message);\n }\n return;\n }\n\n try {\n // 设置阻塞标志\n isBlocked = true;\n\n // 执行监听器\n const result = await listener.call(this, message, args);\n\n // 设置定时器，在ms毫秒后解除阻塞\n timeoutId = setTimeout(() => {\n isBlocked = false;\n timeoutId = null;\n }, ms);\n\n return result;\n } catch (error) {\n isBlocked = false;\n if (timeoutId) {\n clearTimeout(timeoutId);\n timeoutId = null;\n }\n throw error;\n }\n };\n };\n};\n","import { TypedFastEventMessage } from \"../types/FastEventMessages\";\nimport { TypedFastEventListener } from \"../types/FastEventListeners\";\nimport { FastEventListenerArgs } from \"../types/FastEvents\";\nimport { FastListenerPipe } from \"./types\";\n\nexport interface ThrottleOptions {\n /**\n * 当消息被丢弃时的回调函数\n */\n drop?: (message: TypedFastEventMessage) => void;\n}\n\n/**\n * 创建一个节流装饰器，限制监听器函数的执行频率\n * @param interval 节流时间间隔（毫秒）\n * @param options 可选的配置项\n * @returns 装饰器函数\n */\nexport const throttle = (interval: number, options?: ThrottleOptions): FastListenerPipe => {\n return (listener: TypedFastEventListener): TypedFastEventListener => {\n let lastExecutionTime = 0;\n\n return async function (message: TypedFastEventMessage, args: FastEventListenerArgs) {\n const now = Date.now();\n const timeSinceLastExecution = now - lastExecutionTime;\n\n // 如果在节流时间内，则丢弃消息\n if (timeSinceLastExecution < interval) {\n if (options?.drop) {\n options.drop(message);\n }\n return;\n }\n\n // 更新最后执行时间并执行监听器\n lastExecutionTime = now;\n return await listener.call(this, message, args);\n };\n };\n};\n","import { TypedFastEventMessage } from \"../types/FastEventMessages\";\nimport { TypedFastEventListener } from \"../types/FastEventListeners\";\nimport { FastEventListenerArgs } from \"../types/FastEvents\";\nimport type { FastListenerPipe } from \"./types\";\n\n/**\n * 创建一个memorize pipe，用于缓存上一次的返回值\n * @param predicate 可选的判断函数，用于决定是否使用缓存\n * @returns FastListenerPipe\n */\nexport function memorize(\n predicate?: (\n message: TypedFastEventMessage,\n args: FastEventListenerArgs,\n ) => boolean | Promise,\n): FastListenerPipe {\n let lastResult: any = undefined;\n let hasResult = false;\n let lastPayload: any = undefined;\n let hasPredicate = typeof predicate === \"function\";\n return function (listener: TypedFastEventListener): TypedFastEventListener {\n return async function (message: TypedFastEventMessage, args: FastEventListenerArgs) {\n if (hasResult) {\n // 如果有自定义判断函数，使用它来决定是否使用缓存\n if (typeof predicate === \"function\") {\n if (await predicate(message, args)) {\n return lastResult;\n }\n } else {\n // 默认根据message.payload判断\n if (message.payload === lastPayload) {\n return lastResult;\n }\n }\n }\n // 执行原始监听器并缓存结果\n const result = await listener.call(this, message, args);\n lastResult = result;\n if (!hasPredicate) lastPayload = message.payload;\n hasResult = true;\n return result;\n };\n };\n}\n"]}