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{"version":3,"sources":["../src/index.ts"],"sourcesContent":["/* eslint-disable @typescript-eslint/dot-notation */\nfunction validateListener(input: unknown): asserts input is (...args: unknown[]) => Awaitable<void> {\n\tif (typeof input !== 'function') {\n\t\tthrow new TypeError(`The listener argument must be a function. Received ${typeof input}`);\n\t}\n}\n\nfunction validateAbortSignal(input: unknown): asserts input is AbortSignal | undefined {\n\t// Only validate that the signal is a signal if its defined\n\tif (input && !(input instanceof AbortSignal)) {\n\t\tthrow new TypeError(`The signal option must be an AbortSignal. Received ${input}`);\n\t}\n}\n\n// Inspired from https://github.com/nodejs/node/blob/42ad967d68137df1a80a877e7b5ad56403fc157f/lib/internal/util.js#L397\nfunction spliceOne(list: unknown[], index: number) {\n\tfor (; index + 1 < list.length; index++) {\n\t\tlist[index] = list[index + 1];\n\t}\n\n\tlist.pop();\n}\n\n// Inspired from https://github.com/nodejs/node/blob/42ad967d68137df1a80a877e7b5ad56403fc157f/lib/events.js#L889\nfunction arrayClone<T extends unknown[]>(arr: T): T {\n\t// At least since V8 8.3, this implementation is faster than the previous\n\t// which always used a simple for-loop\n\tswitch (arr.length) {\n\t\tcase 2:\n\t\t\treturn [arr[0], arr[1]] as T;\n\t\tcase 3:\n\t\t\treturn [arr[0], arr[1], arr[2]] as T;\n\t\tcase 4:\n\t\t\treturn [arr[0], arr[1], arr[2], arr[3]] as T;\n\t\tcase 5:\n\t\t\treturn [arr[0], arr[1], arr[2], arr[3], arr[4]] as T;\n\t\tcase 6:\n\t\t\treturn [arr[0], arr[1], arr[2], arr[3], arr[4], arr[5]] as T;\n\t}\n\n\treturn arr.slice() as T;\n}\n\n// Inspired from https://github.com/nodejs/node/blob/42ad967d68137df1a80a877e7b5ad56403fc157f/lib/events.js#L427-L475\nfunction identicalSequenceRange(a: unknown[], b: unknown[]): [number, number] {\n\tfor (let i = 0; i < a.length - 3; i++) {\n\t\t// Find the first entry of b that matches the current entry of a.\n\t\tconst pos = b.indexOf(a[i]);\n\t\tif (pos !== -1) {\n\t\t\tconst rest = b.length - pos;\n\t\t\tif (rest > 3) {\n\t\t\t\tlet len = 1;\n\t\t\t\tconst maxLen = Math.min(a.length - i, rest);\n\t\t\t\t// Count the number of consecutive entries.\n\t\t\t\twhile (maxLen > len && a[i + len] === b[pos + len]) {\n\t\t\t\t\tlen++;\n\t\t\t\t}\n\t\t\t\tif (len > 3) {\n\t\t\t\t\treturn [len, i];\n\t\t\t\t}\n\t\t\t}\n\t\t}\n\t}\n\n\treturn [0, 0];\n}\n\nfunction enhanceStackTrace(this: AsyncEventEmitter<any>, err: Error, own: Error) {\n\tlet ctorInfo = '';\n\ttry {\n\t\tconst { name } = this.constructor;\n\t\tif (name !== 'AsyncEventEmitter') ctorInfo = ` on ${name} instance`;\n\t} catch {\n\t\t// Continue regardless of error.\n\t}\n\tconst sep = `\\nEmitted 'error' event${ctorInfo} at:\\n`;\n\n\tconst errStack = err.stack!.split('\\n').slice(1);\n\tconst ownStack = own.stack!.split('\\n').slice(1);\n\n\tconst { 0: len, 1: off } = identicalSequenceRange(ownStack, errStack);\n\tif (len > 0) {\n\t\townStack.splice(off + 1, len - 2, ' [... lines matching original stack trace ...]');\n\t}\n\n\treturn err.stack + sep + ownStack.join('\\n');\n}\n\ninterface InternalEventMap extends Array<Listener | WrappedOnce> {\n\t_hasWarnedAboutMaxListeners?: boolean;\n}\n\nexport class AsyncEventEmitter<\n\t// eslint-disable-next-line @typescript-eslint/ban-types\n\tEvents extends {} = Record<PropertyKey, unknown[]> & AsyncEventEmitterPredefinedEvents,\n\t_Events extends Record<PropertyKey, unknown[]> = Events\n> {\n\tprivate _events: Record<keyof _Events | keyof AsyncEventEmitterPredefinedEvents, Listener | WrappedOnce | InternalEventMap> = {\n\t\t__proto__: null\n\t} as Record<keyof _Events | keyof AsyncEventEmitterPredefinedEvents, Listener | WrappedOnce | InternalEventMap>;\n\n\tprivate _eventCount = 0;\n\tprivate _maxListeners = 10;\n\tprivate _internalPromiseMap: Map<string, Promise<void>> = new Map();\n\tprivate _wrapperId = 0n;\n\n\tpublic addListener<K extends keyof _Events | keyof AsyncEventEmitterPredefinedEvents>(\n\t\teventName: K,\n\t\tlistener: (...args: K extends keyof AsyncEventEmitterPredefinedEvents ? AsyncEventEmitter
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