1478 lines
71 KiB
TypeScript
1478 lines
71 KiB
TypeScript
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declare module 'process' {
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import * as tty from 'node:tty';
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import { Worker } from 'node:worker_threads';
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global {
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var process: NodeJS.Process;
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namespace NodeJS {
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// this namespace merge is here because these are specifically used
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// as the type for process.stdin, process.stdout, and process.stderr.
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// they can't live in tty.d.ts because we need to disambiguate the imported name.
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interface ReadStream extends tty.ReadStream {}
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interface WriteStream extends tty.WriteStream {}
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interface MemoryUsageFn {
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/**
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* The `process.memoryUsage()` method iterate over each page to gather informations about memory
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* usage which can be slow depending on the program memory allocations.
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*/
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(): MemoryUsage;
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/**
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* method returns an integer representing the Resident Set Size (RSS) in bytes.
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*/
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rss(): number;
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}
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interface MemoryUsage {
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rss: number;
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heapTotal: number;
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heapUsed: number;
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external: number;
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arrayBuffers: number;
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}
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interface CpuUsage {
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user: number;
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system: number;
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}
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interface ProcessRelease {
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name: string;
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sourceUrl?: string | undefined;
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headersUrl?: string | undefined;
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libUrl?: string | undefined;
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lts?: string | undefined;
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}
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interface ProcessVersions extends Dict<string> {
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http_parser: string;
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node: string;
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v8: string;
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ares: string;
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uv: string;
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zlib: string;
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modules: string;
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openssl: string;
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}
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type Platform = 'aix' | 'android' | 'darwin' | 'freebsd' | 'haiku' | 'linux' | 'openbsd' | 'sunos' | 'win32' | 'cygwin' | 'netbsd';
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type Signals =
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| 'SIGABRT'
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| 'SIGALRM'
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| 'SIGBUS'
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| 'SIGCHLD'
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| 'SIGCONT'
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| 'SIGFPE'
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| 'SIGHUP'
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| 'SIGILL'
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| 'SIGINT'
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| 'SIGIO'
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| 'SIGIOT'
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| 'SIGKILL'
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| 'SIGPIPE'
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| 'SIGPOLL'
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| 'SIGPROF'
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| 'SIGPWR'
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| 'SIGQUIT'
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| 'SIGSEGV'
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| 'SIGSTKFLT'
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| 'SIGSTOP'
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| 'SIGSYS'
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| 'SIGTERM'
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| 'SIGTRAP'
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| 'SIGTSTP'
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| 'SIGTTIN'
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| 'SIGTTOU'
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| 'SIGUNUSED'
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| 'SIGURG'
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| 'SIGUSR1'
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| 'SIGUSR2'
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| 'SIGVTALRM'
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| 'SIGWINCH'
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| 'SIGXCPU'
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| 'SIGXFSZ'
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| 'SIGBREAK'
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| 'SIGLOST'
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| 'SIGINFO';
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type UncaughtExceptionOrigin = 'uncaughtException' | 'unhandledRejection';
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type MultipleResolveType = 'resolve' | 'reject';
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type BeforeExitListener = (code: number) => void;
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type DisconnectListener = () => void;
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type ExitListener = (code: number) => void;
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type RejectionHandledListener = (promise: Promise<unknown>) => void;
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type UncaughtExceptionListener = (error: Error, origin: UncaughtExceptionOrigin) => void;
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type UnhandledRejectionListener = (reason: {} | null | undefined, promise: Promise<unknown>) => void;
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type WarningListener = (warning: Error) => void;
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type MessageListener = (message: unknown, sendHandle: unknown) => void;
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type SignalsListener = (signal: Signals) => void;
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type MultipleResolveListener = (type: MultipleResolveType, promise: Promise<unknown>, value: unknown) => void;
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type WorkerListener = (worker: Worker) => void;
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interface Socket extends ReadWriteStream {
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isTTY?: true | undefined;
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}
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// Alias for compatibility
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interface ProcessEnv extends Dict<string> {
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/**
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* Can be used to change the default timezone at runtime
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*/
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TZ?: string;
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}
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interface HRTime {
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(time?: [number, number]): [number, number];
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bigint(): bigint;
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}
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interface ProcessReport {
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/**
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* Directory where the report is written.
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* working directory of the Node.js process.
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* @default '' indicating that reports are written to the current
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*/
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directory: string;
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/**
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* Filename where the report is written.
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* The default value is the empty string.
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* @default '' the output filename will be comprised of a timestamp,
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* PID, and sequence number.
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*/
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filename: string;
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/**
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* Returns a JSON-formatted diagnostic report for the running process.
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* The report's JavaScript stack trace is taken from err, if present.
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*/
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getReport(err?: Error): string;
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/**
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* If true, a diagnostic report is generated on fatal errors,
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* such as out of memory errors or failed C++ assertions.
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* @default false
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*/
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reportOnFatalError: boolean;
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/**
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* If true, a diagnostic report is generated when the process
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* receives the signal specified by process.report.signal.
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* @defaul false
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*/
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reportOnSignal: boolean;
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/**
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* If true, a diagnostic report is generated on uncaught exception.
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* @default false
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*/
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reportOnUncaughtException: boolean;
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/**
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* The signal used to trigger the creation of a diagnostic report.
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* @default 'SIGUSR2'
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*/
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signal: Signals;
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/**
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* Writes a diagnostic report to a file. If filename is not provided, the default filename
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* includes the date, time, PID, and a sequence number.
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* The report's JavaScript stack trace is taken from err, if present.
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*
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* @param fileName Name of the file where the report is written.
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* This should be a relative path, that will be appended to the directory specified in
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* `process.report.directory`, or the current working directory of the Node.js process,
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* if unspecified.
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* @param error A custom error used for reporting the JavaScript stack.
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* @return Filename of the generated report.
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*/
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writeReport(fileName?: string): string;
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writeReport(error?: Error): string;
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writeReport(fileName?: string, err?: Error): string;
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}
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interface ResourceUsage {
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fsRead: number;
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fsWrite: number;
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involuntaryContextSwitches: number;
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ipcReceived: number;
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ipcSent: number;
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majorPageFault: number;
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maxRSS: number;
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minorPageFault: number;
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sharedMemorySize: number;
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signalsCount: number;
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swappedOut: number;
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systemCPUTime: number;
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unsharedDataSize: number;
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unsharedStackSize: number;
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userCPUTime: number;
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voluntaryContextSwitches: number;
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}
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interface EmitWarningOptions {
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/**
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* When `warning` is a `string`, `type` is the name to use for the _type_ of warning being emitted.
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*
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* @default 'Warning'
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*/
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type?: string | undefined;
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/**
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* A unique identifier for the warning instance being emitted.
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*/
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code?: string | undefined;
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/**
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* When `warning` is a `string`, `ctor` is an optional function used to limit the generated stack trace.
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*
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* @default process.emitWarning
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*/
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ctor?: Function | undefined;
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/**
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* Additional text to include with the error.
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*/
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detail?: string | undefined;
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}
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interface ProcessConfig {
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readonly target_defaults: {
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readonly cflags: any[];
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readonly default_configuration: string;
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readonly defines: string[];
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readonly include_dirs: string[];
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readonly libraries: string[];
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};
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readonly variables: {
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readonly clang: number;
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readonly host_arch: string;
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readonly node_install_npm: boolean;
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readonly node_install_waf: boolean;
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readonly node_prefix: string;
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readonly node_shared_openssl: boolean;
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readonly node_shared_v8: boolean;
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readonly node_shared_zlib: boolean;
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readonly node_use_dtrace: boolean;
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readonly node_use_etw: boolean;
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readonly node_use_openssl: boolean;
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readonly target_arch: string;
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readonly v8_no_strict_aliasing: number;
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readonly v8_use_snapshot: boolean;
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readonly visibility: string;
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};
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}
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interface Process extends EventEmitter {
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/**
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* The `process.stdout` property returns a stream connected to`stdout` (fd `1`). It is a `net.Socket` (which is a `Duplex` stream) unless fd `1` refers to a file, in which case it is
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* a `Writable` stream.
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*
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* For example, to copy `process.stdin` to `process.stdout`:
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*
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* ```js
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* import { stdin, stdout } from 'process';
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*
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* stdin.pipe(stdout);
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* ```
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*
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* `process.stdout` differs from other Node.js streams in important ways. See `note on process I/O` for more information.
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*/
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stdout: WriteStream & {
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fd: 1;
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};
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/**
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* The `process.stderr` property returns a stream connected to`stderr` (fd `2`). It is a `net.Socket` (which is a `Duplex` stream) unless fd `2` refers to a file, in which case it is
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* a `Writable` stream.
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*
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* `process.stderr` differs from other Node.js streams in important ways. See `note on process I/O` for more information.
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*/
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stderr: WriteStream & {
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fd: 2;
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};
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/**
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* The `process.stdin` property returns a stream connected to`stdin` (fd `0`). It is a `net.Socket` (which is a `Duplex` stream) unless fd `0` refers to a file, in which case it is
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* a `Readable` stream.
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*
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* For details of how to read from `stdin` see `readable.read()`.
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*
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* As a `Duplex` stream, `process.stdin` can also be used in "old" mode that
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* is compatible with scripts written for Node.js prior to v0.10\.
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* For more information see `Stream compatibility`.
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*
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* In "old" streams mode the `stdin` stream is paused by default, so one
|
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* must call `process.stdin.resume()` to read from it. Note also that calling`process.stdin.resume()` itself would switch stream to "old" mode.
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*/
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stdin: ReadStream & {
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fd: 0;
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};
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openStdin(): Socket;
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/**
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* The `process.argv` property returns an array containing the command-line
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* arguments passed when the Node.js process was launched. The first element will
|
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* be {@link execPath}. See `process.argv0` if access to the original value
|
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* of `argv[0]` is needed. The second element will be the path to the JavaScript
|
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* file being executed. The remaining elements will be any additional command-line
|
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* arguments.
|
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*
|
|||
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* For example, assuming the following script for `process-args.js`:
|
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*
|
|||
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* ```js
|
|||
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* import { argv } from 'process';
|
|||
|
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*
|
|||
|
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* // print process.argv
|
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* argv.forEach((val, index) => {
|
|||
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* console.log(`${index}: ${val}`);
|
|||
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* });
|
|||
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* ```
|
|||
|
|
*
|
|||
|
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* Launching the Node.js process as:
|
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*
|
|||
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* ```console
|
|||
|
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* $ node process-args.js one two=three four
|
|||
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* ```
|
|||
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*
|
|||
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* Would generate the output:
|
|||
|
|
*
|
|||
|
|
* ```text
|
|||
|
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* 0: /usr/local/bin/node
|
|||
|
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* 1: /Users/mjr/work/node/process-args.js
|
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* 2: one
|
|||
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* 3: two=three
|
|||
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* 4: four
|
|||
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* ```
|
|||
|
|
* @since v0.1.27
|
|||
|
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*/
|
|||
|
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argv: string[];
|
|||
|
|
/**
|
|||
|
|
* The `process.argv0` property stores a read-only copy of the original value of`argv[0]` passed when Node.js starts.
|
|||
|
|
*
|
|||
|
|
* ```console
|
|||
|
|
* $ bash -c 'exec -a customArgv0 ./node'
|
|||
|
|
* > process.argv[0]
|
|||
|
|
* '/Volumes/code/external/node/out/Release/node'
|
|||
|
|
* > process.argv0
|
|||
|
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* 'customArgv0'
|
|||
|
|
* ```
|
|||
|
|
* @since v6.4.0
|
|||
|
|
*/
|
|||
|
|
argv0: string;
|
|||
|
|
/**
|
|||
|
|
* The `process.execArgv` property returns the set of Node.js-specific command-line
|
|||
|
|
* options passed when the Node.js process was launched. These options do not
|
|||
|
|
* appear in the array returned by the {@link argv} property, and do not
|
|||
|
|
* include the Node.js executable, the name of the script, or any options following
|
|||
|
|
* the script name. These options are useful in order to spawn child processes with
|
|||
|
|
* the same execution environment as the parent.
|
|||
|
|
*
|
|||
|
|
* ```console
|
|||
|
|
* $ node --harmony script.js --version
|
|||
|
|
* ```
|
|||
|
|
*
|
|||
|
|
* Results in `process.execArgv`:
|
|||
|
|
*
|
|||
|
|
* ```js
|
|||
|
|
* ['--harmony']
|
|||
|
|
* ```
|
|||
|
|
*
|
|||
|
|
* And `process.argv`:
|
|||
|
|
*
|
|||
|
|
* ```js
|
|||
|
|
* ['/usr/local/bin/node', 'script.js', '--version']
|
|||
|
|
* ```
|
|||
|
|
*
|
|||
|
|
* Refer to `Worker constructor` for the detailed behavior of worker
|
|||
|
|
* threads with this property.
|
|||
|
|
* @since v0.7.7
|
|||
|
|
*/
|
|||
|
|
execArgv: string[];
|
|||
|
|
/**
|
|||
|
|
* The `process.execPath` property returns the absolute pathname of the executable
|
|||
|
|
* that started the Node.js process. Symbolic links, if any, are resolved.
|
|||
|
|
*
|
|||
|
|
* ```js
|
|||
|
|
* '/usr/local/bin/node'
|
|||
|
|
* ```
|
|||
|
|
* @since v0.1.100
|
|||
|
|
*/
|
|||
|
|
execPath: string;
|
|||
|
|
/**
|
|||
|
|
* The `process.abort()` method causes the Node.js process to exit immediately and
|
|||
|
|
* generate a core file.
|
|||
|
|
*
|
|||
|
|
* This feature is not available in `Worker` threads.
|
|||
|
|
* @since v0.7.0
|
|||
|
|
*/
|
|||
|
|
abort(): never;
|
|||
|
|
/**
|
|||
|
|
* The `process.chdir()` method changes the current working directory of the
|
|||
|
|
* Node.js process or throws an exception if doing so fails (for instance, if
|
|||
|
|
* the specified `directory` does not exist).
|
|||
|
|
*
|
|||
|
|
* ```js
|
|||
|
|
* import { chdir, cwd } from 'process';
|
|||
|
|
*
|
|||
|
|
* console.log(`Starting directory: ${cwd()}`);
|
|||
|
|
* try {
|
|||
|
|
* chdir('/tmp');
|
|||
|
|
* console.log(`New directory: ${cwd()}`);
|
|||
|
|
* } catch (err) {
|
|||
|
|
* console.error(`chdir: ${err}`);
|
|||
|
|
* }
|
|||
|
|
* ```
|
|||
|
|
*
|
|||
|
|
* This feature is not available in `Worker` threads.
|
|||
|
|
* @since v0.1.17
|
|||
|
|
*/
|
|||
|
|
chdir(directory: string): void;
|
|||
|
|
/**
|
|||
|
|
* The `process.cwd()` method returns the current working directory of the Node.js
|
|||
|
|
* process.
|
|||
|
|
*
|
|||
|
|
* ```js
|
|||
|
|
* import { cwd } from 'process';
|
|||
|
|
*
|
|||
|
|
* console.log(`Current directory: ${cwd()}`);
|
|||
|
|
* ```
|
|||
|
|
* @since v0.1.8
|
|||
|
|
*/
|
|||
|
|
cwd(): string;
|
|||
|
|
/**
|
|||
|
|
* The port used by the Node.js debugger when enabled.
|
|||
|
|
*
|
|||
|
|
* ```js
|
|||
|
|
* import process from 'process';
|
|||
|
|
*
|
|||
|
|
* process.debugPort = 5858;
|
|||
|
|
* ```
|
|||
|
|
* @since v0.7.2
|
|||
|
|
*/
|
|||
|
|
debugPort: number;
|
|||
|
|
/**
|
|||
|
|
* The `process.emitWarning()` method can be used to emit custom or application
|
|||
|
|
* specific process warnings. These can be listened for by adding a handler to the `'warning'` event.
|
|||
|
|
*
|
|||
|
|
* ```js
|
|||
|
|
* import { emitWarning } from 'process';
|
|||
|
|
*
|
|||
|
|
* // Emit a warning with a code and additional detail.
|
|||
|
|
* emitWarning('Something happened!', {
|
|||
|
|
* code: 'MY_WARNING',
|
|||
|
|
* detail: 'This is some additional information'
|
|||
|
|
* });
|
|||
|
|
* // Emits:
|
|||
|
|
* // (node:56338) [MY_WARNING] Warning: Something happened!
|
|||
|
|
* // This is some additional information
|
|||
|
|
* ```
|
|||
|
|
*
|
|||
|
|
* In this example, an `Error` object is generated internally by`process.emitWarning()` and passed through to the `'warning'` handler.
|
|||
|
|
*
|
|||
|
|
* ```js
|
|||
|
|
* import process from 'process';
|
|||
|
|
*
|
|||
|
|
* process.on('warning', (warning) => {
|
|||
|
|
* console.warn(warning.name); // 'Warning'
|
|||
|
|
* console.warn(warning.message); // 'Something happened!'
|
|||
|
|
* console.warn(warning.code); // 'MY_WARNING'
|
|||
|
|
* console.warn(warning.stack); // Stack trace
|
|||
|
|
* console.warn(warning.detail); // 'This is some additional information'
|
|||
|
|
* });
|
|||
|
|
* ```
|
|||
|
|
*
|
|||
|
|
* If `warning` is passed as an `Error` object, the `options` argument is ignored.
|
|||
|
|
* @since v8.0.0
|
|||
|
|
* @param warning The warning to emit.
|
|||
|
|
*/
|
|||
|
|
emitWarning(warning: string | Error, ctor?: Function): void;
|
|||
|
|
emitWarning(warning: string | Error, type?: string, ctor?: Function): void;
|
|||
|
|
emitWarning(warning: string | Error, type?: string, code?: string, ctor?: Function): void;
|
|||
|
|
emitWarning(warning: string | Error, options?: EmitWarningOptions): void;
|
|||
|
|
/**
|
|||
|
|
* The `process.env` property returns an object containing the user environment.
|
|||
|
|
* See [`environ(7)`](http://man7.org/linux/man-pages/man7/environ.7.html).
|
|||
|
|
*
|
|||
|
|
* An example of this object looks like:
|
|||
|
|
*
|
|||
|
|
* ```js
|
|||
|
|
* {
|
|||
|
|
* TERM: 'xterm-256color',
|
|||
|
|
* SHELL: '/usr/local/bin/bash',
|
|||
|
|
* USER: 'maciej',
|
|||
|
|
* PATH: '~/.bin/:/usr/bin:/bin:/usr/sbin:/sbin:/usr/local/bin',
|
|||
|
|
* PWD: '/Users/maciej',
|
|||
|
|
* EDITOR: 'vim',
|
|||
|
|
* SHLVL: '1',
|
|||
|
|
* HOME: '/Users/maciej',
|
|||
|
|
* LOGNAME: 'maciej',
|
|||
|
|
* _: '/usr/local/bin/node'
|
|||
|
|
* }
|
|||
|
|
* ```
|
|||
|
|
*
|
|||
|
|
* It is possible to modify this object, but such modifications will not be
|
|||
|
|
* reflected outside the Node.js process, or (unless explicitly requested)
|
|||
|
|
* to other `Worker` threads.
|
|||
|
|
* In other words, the following example would not work:
|
|||
|
|
*
|
|||
|
|
* ```console
|
|||
|
|
* $ node -e 'process.env.foo = "bar"' && echo $foo
|
|||
|
|
* ```
|
|||
|
|
*
|
|||
|
|
* While the following will:
|
|||
|
|
*
|
|||
|
|
* ```js
|
|||
|
|
* import { env } from 'process';
|
|||
|
|
*
|
|||
|
|
* env.foo = 'bar';
|
|||
|
|
* console.log(env.foo);
|
|||
|
|
* ```
|
|||
|
|
*
|
|||
|
|
* Assigning a property on `process.env` will implicitly convert the value
|
|||
|
|
* to a string. **This behavior is deprecated.** Future versions of Node.js may
|
|||
|
|
* throw an error when the value is not a string, number, or boolean.
|
|||
|
|
*
|
|||
|
|
* ```js
|
|||
|
|
* import { env } from 'process';
|
|||
|
|
*
|
|||
|
|
* env.test = null;
|
|||
|
|
* console.log(env.test);
|
|||
|
|
* // => 'null'
|
|||
|
|
* env.test = undefined;
|
|||
|
|
* console.log(env.test);
|
|||
|
|
* // => 'undefined'
|
|||
|
|
* ```
|
|||
|
|
*
|
|||
|
|
* Use `delete` to delete a property from `process.env`.
|
|||
|
|
*
|
|||
|
|
* ```js
|
|||
|
|
* import { env } from 'process';
|
|||
|
|
*
|
|||
|
|
* env.TEST = 1;
|
|||
|
|
* delete env.TEST;
|
|||
|
|
* console.log(env.TEST);
|
|||
|
|
* // => undefined
|
|||
|
|
* ```
|
|||
|
|
*
|
|||
|
|
* On Windows operating systems, environment variables are case-insensitive.
|
|||
|
|
*
|
|||
|
|
* ```js
|
|||
|
|
* import { env } from 'process';
|
|||
|
|
*
|
|||
|
|
* env.TEST = 1;
|
|||
|
|
* console.log(env.test);
|
|||
|
|
* // => 1
|
|||
|
|
* ```
|
|||
|
|
*
|
|||
|
|
* Unless explicitly specified when creating a `Worker` instance,
|
|||
|
|
* each `Worker` thread has its own copy of `process.env`, based on its
|
|||
|
|
* parent thread’s `process.env`, or whatever was specified as the `env` option
|
|||
|
|
* to the `Worker` constructor. Changes to `process.env` will not be visible
|
|||
|
|
* across `Worker` threads, and only the main thread can make changes that
|
|||
|
|
* are visible to the operating system or to native add-ons.
|
|||
|
|
* @since v0.1.27
|
|||
|
|
*/
|
|||
|
|
env: ProcessEnv;
|
|||
|
|
/**
|
|||
|
|
* The `process.exit()` method instructs Node.js to terminate the process
|
|||
|
|
* synchronously with an exit status of `code`. If `code` is omitted, exit uses
|
|||
|
|
* either the 'success' code `0` or the value of `process.exitCode` if it has been
|
|||
|
|
* set. Node.js will not terminate until all the `'exit'` event listeners are
|
|||
|
|
* called.
|
|||
|
|
*
|
|||
|
|
* To exit with a 'failure' code:
|
|||
|
|
*
|
|||
|
|
* ```js
|
|||
|
|
* import { exit } from 'process';
|
|||
|
|
*
|
|||
|
|
* exit(1);
|
|||
|
|
* ```
|
|||
|
|
*
|
|||
|
|
* The shell that executed Node.js should see the exit code as `1`.
|
|||
|
|
*
|
|||
|
|
* Calling `process.exit()` will force the process to exit as quickly as possible
|
|||
|
|
* even if there are still asynchronous operations pending that have not yet
|
|||
|
|
* completed fully, including I/O operations to `process.stdout` and`process.stderr`.
|
|||
|
|
*
|
|||
|
|
* In most situations, it is not actually necessary to call `process.exit()`explicitly. The Node.js process will exit on its own _if there is no additional_
|
|||
|
|
* _work pending_ in the event loop. The `process.exitCode` property can be set to
|
|||
|
|
* tell the process which exit code to use when the process exits gracefully.
|
|||
|
|
*
|
|||
|
|
* For instance, the following example illustrates a _misuse_ of the`process.exit()` method that could lead to data printed to stdout being
|
|||
|
|
* truncated and lost:
|
|||
|
|
*
|
|||
|
|
* ```js
|
|||
|
|
* import { exit } from 'process';
|
|||
|
|
*
|
|||
|
|
* // This is an example of what *not* to do:
|
|||
|
|
* if (someConditionNotMet()) {
|
|||
|
|
* printUsageToStdout();
|
|||
|
|
* exit(1);
|
|||
|
|
* }
|
|||
|
|
* ```
|
|||
|
|
*
|
|||
|
|
* The reason this is problematic is because writes to `process.stdout` in Node.js
|
|||
|
|
* are sometimes _asynchronous_ and may occur over multiple ticks of the Node.js
|
|||
|
|
* event loop. Calling `process.exit()`, however, forces the process to exit_before_ those additional writes to `stdout` can be performed.
|
|||
|
|
*
|
|||
|
|
* Rather than calling `process.exit()` directly, the code _should_ set the`process.exitCode` and allow the process to exit naturally by avoiding
|
|||
|
|
* scheduling any additional work for the event loop:
|
|||
|
|
*
|
|||
|
|
* ```js
|
|||
|
|
* import process from 'process';
|
|||
|
|
*
|
|||
|
|
* // How to properly set the exit code while letting
|
|||
|
|
* // the process exit gracefully.
|
|||
|
|
* if (someConditionNotMet()) {
|
|||
|
|
* printUsageToStdout();
|
|||
|
|
* process.exitCode = 1;
|
|||
|
|
* }
|
|||
|
|
* ```
|
|||
|
|
*
|
|||
|
|
* If it is necessary to terminate the Node.js process due to an error condition,
|
|||
|
|
* throwing an _uncaught_ error and allowing the process to terminate accordingly
|
|||
|
|
* is safer than calling `process.exit()`.
|
|||
|
|
*
|
|||
|
|
* In `Worker` threads, this function stops the current thread rather
|
|||
|
|
* than the current process.
|
|||
|
|
* @since v0.1.13
|
|||
|
|
* @param [code=0] The exit code.
|
|||
|
|
*/
|
|||
|
|
exit(code?: number): never;
|
|||
|
|
/**
|
|||
|
|
* A number which will be the process exit code, when the process either
|
|||
|
|
* exits gracefully, or is exited via {@link exit} without specifying
|
|||
|
|
* a code.
|
|||
|
|
*
|
|||
|
|
* Specifying a code to {@link exit} will override any
|
|||
|
|
* previous setting of `process.exitCode`.
|
|||
|
|
* @since v0.11.8
|
|||
|
|
*/
|
|||
|
|
exitCode?: number | undefined;
|
|||
|
|
/**
|
|||
|
|
* The `process.getgid()` method returns the numerical group identity of the
|
|||
|
|
* process. (See [`getgid(2)`](http://man7.org/linux/man-pages/man2/getgid.2.html).)
|
|||
|
|
*
|
|||
|
|
* ```js
|
|||
|
|
* import process from 'process';
|
|||
|
|
*
|
|||
|
|
* if (process.getgid) {
|
|||
|
|
* console.log(`Current gid: ${process.getgid()}`);
|
|||
|
|
* }
|
|||
|
|
* ```
|
|||
|
|
*
|
|||
|
|
* This function is only available on POSIX platforms (i.e. not Windows or
|
|||
|
|
* Android).
|
|||
|
|
* @since v0.1.31
|
|||
|
|
*/
|
|||
|
|
getgid(): number;
|
|||
|
|
/**
|
|||
|
|
* The `process.setgid()` method sets the group identity of the process. (See[`setgid(2)`](http://man7.org/linux/man-pages/man2/setgid.2.html).) The `id` can be passed as either a
|
|||
|
|
* numeric ID or a group name
|
|||
|
|
* string. If a group name is specified, this method blocks while resolving the
|
|||
|
|
* associated numeric ID.
|
|||
|
|
*
|
|||
|
|
* ```js
|
|||
|
|
* import process from 'process';
|
|||
|
|
*
|
|||
|
|
* if (process.getgid && process.setgid) {
|
|||
|
|
* console.log(`Current gid: ${process.getgid()}`);
|
|||
|
|
* try {
|
|||
|
|
* process.setgid(501);
|
|||
|
|
* console.log(`New gid: ${process.getgid()}`);
|
|||
|
|
* } catch (err) {
|
|||
|
|
* console.log(`Failed to set gid: ${err}`);
|
|||
|
|
* }
|
|||
|
|
* }
|
|||
|
|
* ```
|
|||
|
|
*
|
|||
|
|
* This function is only available on POSIX platforms (i.e. not Windows or
|
|||
|
|
* Android).
|
|||
|
|
* This feature is not available in `Worker` threads.
|
|||
|
|
* @since v0.1.31
|
|||
|
|
* @param id The group name or ID
|
|||
|
|
*/
|
|||
|
|
setgid(id: number | string): void;
|
|||
|
|
/**
|
|||
|
|
* The `process.getuid()` method returns the numeric user identity of the process.
|
|||
|
|
* (See [`getuid(2)`](http://man7.org/linux/man-pages/man2/getuid.2.html).)
|
|||
|
|
*
|
|||
|
|
* ```js
|
|||
|
|
* import process from 'process';
|
|||
|
|
*
|
|||
|
|
* if (process.getuid) {
|
|||
|
|
* console.log(`Current uid: ${process.getuid()}`);
|
|||
|
|
* }
|
|||
|
|
* ```
|
|||
|
|
*
|
|||
|
|
* This function is only available on POSIX platforms (i.e. not Windows or
|
|||
|
|
* Android).
|
|||
|
|
* @since v0.1.28
|
|||
|
|
*/
|
|||
|
|
getuid(): number;
|
|||
|
|
/**
|
|||
|
|
* The `process.setuid(id)` method sets the user identity of the process. (See[`setuid(2)`](http://man7.org/linux/man-pages/man2/setuid.2.html).) The `id` can be passed as either a
|
|||
|
|
* numeric ID or a username string.
|
|||
|
|
* If a username is specified, the method blocks while resolving the associated
|
|||
|
|
* numeric ID.
|
|||
|
|
*
|
|||
|
|
* ```js
|
|||
|
|
* import process from 'process';
|
|||
|
|
*
|
|||
|
|
* if (process.getuid && process.setuid) {
|
|||
|
|
* console.log(`Current uid: ${process.getuid()}`);
|
|||
|
|
* try {
|
|||
|
|
* process.setuid(501);
|
|||
|
|
* console.log(`New uid: ${process.getuid()}`);
|
|||
|
|
* } catch (err) {
|
|||
|
|
* console.log(`Failed to set uid: ${err}`);
|
|||
|
|
* }
|
|||
|
|
* }
|
|||
|
|
* ```
|
|||
|
|
*
|
|||
|
|
* This function is only available on POSIX platforms (i.e. not Windows or
|
|||
|
|
* Android).
|
|||
|
|
* This feature is not available in `Worker` threads.
|
|||
|
|
* @since v0.1.28
|
|||
|
|
*/
|
|||
|
|
setuid(id: number | string): void;
|
|||
|
|
/**
|
|||
|
|
* The `process.geteuid()` method returns the numerical effective user identity of
|
|||
|
|
* the process. (See [`geteuid(2)`](http://man7.org/linux/man-pages/man2/geteuid.2.html).)
|
|||
|
|
*
|
|||
|
|
* ```js
|
|||
|
|
* import process from 'process';
|
|||
|
|
*
|
|||
|
|
* if (process.geteuid) {
|
|||
|
|
* console.log(`Current uid: ${process.geteuid()}`);
|
|||
|
|
* }
|
|||
|
|
* ```
|
|||
|
|
*
|
|||
|
|
* This function is only available on POSIX platforms (i.e. not Windows or
|
|||
|
|
* Android).
|
|||
|
|
* @since v2.0.0
|
|||
|
|
*/
|
|||
|
|
geteuid(): number;
|
|||
|
|
/**
|
|||
|
|
* The `process.seteuid()` method sets the effective user identity of the process.
|
|||
|
|
* (See [`seteuid(2)`](http://man7.org/linux/man-pages/man2/seteuid.2.html).) The `id` can be passed as either a numeric ID or a username
|
|||
|
|
* string. If a username is specified, the method blocks while resolving the
|
|||
|
|
* associated numeric ID.
|
|||
|
|
*
|
|||
|
|
* ```js
|
|||
|
|
* import process from 'process';
|
|||
|
|
*
|
|||
|
|
* if (process.geteuid && process.seteuid) {
|
|||
|
|
* console.log(`Current uid: ${process.geteuid()}`);
|
|||
|
|
* try {
|
|||
|
|
* process.seteuid(501);
|
|||
|
|
* console.log(`New uid: ${process.geteuid()}`);
|
|||
|
|
* } catch (err) {
|
|||
|
|
* console.log(`Failed to set uid: ${err}`);
|
|||
|
|
* }
|
|||
|
|
* }
|
|||
|
|
* ```
|
|||
|
|
*
|
|||
|
|
* This function is only available on POSIX platforms (i.e. not Windows or
|
|||
|
|
* Android).
|
|||
|
|
* This feature is not available in `Worker` threads.
|
|||
|
|
* @since v2.0.0
|
|||
|
|
* @param id A user name or ID
|
|||
|
|
*/
|
|||
|
|
seteuid(id: number | string): void;
|
|||
|
|
/**
|
|||
|
|
* The `process.getegid()` method returns the numerical effective group identity
|
|||
|
|
* of the Node.js process. (See [`getegid(2)`](http://man7.org/linux/man-pages/man2/getegid.2.html).)
|
|||
|
|
*
|
|||
|
|
* ```js
|
|||
|
|
* import process from 'process';
|
|||
|
|
*
|
|||
|
|
* if (process.getegid) {
|
|||
|
|
* console.log(`Current gid: ${process.getegid()}`);
|
|||
|
|
* }
|
|||
|
|
* ```
|
|||
|
|
*
|
|||
|
|
* This function is only available on POSIX platforms (i.e. not Windows or
|
|||
|
|
* Android).
|
|||
|
|
* @since v2.0.0
|
|||
|
|
*/
|
|||
|
|
getegid(): number;
|
|||
|
|
/**
|
|||
|
|
* The `process.setegid()` method sets the effective group identity of the process.
|
|||
|
|
* (See [`setegid(2)`](http://man7.org/linux/man-pages/man2/setegid.2.html).) The `id` can be passed as either a numeric ID or a group
|
|||
|
|
* name string. If a group name is specified, this method blocks while resolving
|
|||
|
|
* the associated a numeric ID.
|
|||
|
|
*
|
|||
|
|
* ```js
|
|||
|
|
* import process from 'process';
|
|||
|
|
*
|
|||
|
|
* if (process.getegid && process.setegid) {
|
|||
|
|
* console.log(`Current gid: ${process.getegid()}`);
|
|||
|
|
* try {
|
|||
|
|
* process.setegid(501);
|
|||
|
|
* console.log(`New gid: ${process.getegid()}`);
|
|||
|
|
* } catch (err) {
|
|||
|
|
* console.log(`Failed to set gid: ${err}`);
|
|||
|
|
* }
|
|||
|
|
* }
|
|||
|
|
* ```
|
|||
|
|
*
|
|||
|
|
* This function is only available on POSIX platforms (i.e. not Windows or
|
|||
|
|
* Android).
|
|||
|
|
* This feature is not available in `Worker` threads.
|
|||
|
|
* @since v2.0.0
|
|||
|
|
* @param id A group name or ID
|
|||
|
|
*/
|
|||
|
|
setegid(id: number | string): void;
|
|||
|
|
/**
|
|||
|
|
* The `process.getgroups()` method returns an array with the supplementary group
|
|||
|
|
* IDs. POSIX leaves it unspecified if the effective group ID is included but
|
|||
|
|
* Node.js ensures it always is.
|
|||
|
|
*
|
|||
|
|
* ```js
|
|||
|
|
* import process from 'process';
|
|||
|
|
*
|
|||
|
|
* if (process.getgroups) {
|
|||
|
|
* console.log(process.getgroups()); // [ 16, 21, 297 ]
|
|||
|
|
* }
|
|||
|
|
* ```
|
|||
|
|
*
|
|||
|
|
* This function is only available on POSIX platforms (i.e. not Windows or
|
|||
|
|
* Android).
|
|||
|
|
* @since v0.9.4
|
|||
|
|
*/
|
|||
|
|
getgroups(): number[];
|
|||
|
|
/**
|
|||
|
|
* The `process.setgroups()` method sets the supplementary group IDs for the
|
|||
|
|
* Node.js process. This is a privileged operation that requires the Node.js
|
|||
|
|
* process to have `root` or the `CAP_SETGID` capability.
|
|||
|
|
*
|
|||
|
|
* The `groups` array can contain numeric group IDs, group names, or both.
|
|||
|
|
*
|
|||
|
|
* ```js
|
|||
|
|
* import process from 'process';
|
|||
|
|
*
|
|||
|
|
* if (process.getgroups && process.setgroups) {
|
|||
|
|
* try {
|
|||
|
|
* process.setgroups([501]);
|
|||
|
|
* console.log(process.getgroups()); // new groups
|
|||
|
|
* } catch (err) {
|
|||
|
|
* console.log(`Failed to set groups: ${err}`);
|
|||
|
|
* }
|
|||
|
|
* }
|
|||
|
|
* ```
|
|||
|
|
*
|
|||
|
|
* This function is only available on POSIX platforms (i.e. not Windows or
|
|||
|
|
* Android).
|
|||
|
|
* This feature is not available in `Worker` threads.
|
|||
|
|
* @since v0.9.4
|
|||
|
|
*/
|
|||
|
|
setgroups(groups: ReadonlyArray<string | number>): void;
|
|||
|
|
/**
|
|||
|
|
* The `process.setUncaughtExceptionCaptureCallback()` function sets a function
|
|||
|
|
* that will be invoked when an uncaught exception occurs, which will receive the
|
|||
|
|
* exception value itself as its first argument.
|
|||
|
|
*
|
|||
|
|
* If such a function is set, the `'uncaughtException'` event will
|
|||
|
|
* not be emitted. If `--abort-on-uncaught-exception` was passed from the
|
|||
|
|
* command line or set through `v8.setFlagsFromString()`, the process will
|
|||
|
|
* not abort. Actions configured to take place on exceptions such as report
|
|||
|
|
* generations will be affected too
|
|||
|
|
*
|
|||
|
|
* To unset the capture function,`process.setUncaughtExceptionCaptureCallback(null)` may be used. Calling this
|
|||
|
|
* method with a non-`null` argument while another capture function is set will
|
|||
|
|
* throw an error.
|
|||
|
|
*
|
|||
|
|
* Using this function is mutually exclusive with using the deprecated `domain` built-in module.
|
|||
|
|
* @since v9.3.0
|
|||
|
|
*/
|
|||
|
|
setUncaughtExceptionCaptureCallback(cb: ((err: Error) => void) | null): void;
|
|||
|
|
/**
|
|||
|
|
* Indicates whether a callback has been set using {@link setUncaughtExceptionCaptureCallback}.
|
|||
|
|
* @since v9.3.0
|
|||
|
|
*/
|
|||
|
|
hasUncaughtExceptionCaptureCallback(): boolean;
|
|||
|
|
/**
|
|||
|
|
* The `process.version` property contains the Node.js version string.
|
|||
|
|
*
|
|||
|
|
* ```js
|
|||
|
|
* import { version } from 'process';
|
|||
|
|
*
|
|||
|
|
* console.log(`Version: ${version}`);
|
|||
|
|
* // Version: v14.8.0
|
|||
|
|
* ```
|
|||
|
|
*
|
|||
|
|
* To get the version string without the prepended _v_, use`process.versions.node`.
|
|||
|
|
* @since v0.1.3
|
|||
|
|
*/
|
|||
|
|
readonly version: string;
|
|||
|
|
/**
|
|||
|
|
* The `process.versions` property returns an object listing the version strings of
|
|||
|
|
* Node.js and its dependencies. `process.versions.modules` indicates the current
|
|||
|
|
* ABI version, which is increased whenever a C++ API changes. Node.js will refuse
|
|||
|
|
* to load modules that were compiled against a different module ABI version.
|
|||
|
|
*
|
|||
|
|
* ```js
|
|||
|
|
* import { versions } from 'process';
|
|||
|
|
*
|
|||
|
|
* console.log(versions);
|
|||
|
|
* ```
|
|||
|
|
*
|
|||
|
|
* Will generate an object similar to:
|
|||
|
|
*
|
|||
|
|
* ```console
|
|||
|
|
* { node: '11.13.0',
|
|||
|
|
* v8: '7.0.276.38-node.18',
|
|||
|
|
* uv: '1.27.0',
|
|||
|
|
* zlib: '1.2.11',
|
|||
|
|
* brotli: '1.0.7',
|
|||
|
|
* ares: '1.15.0',
|
|||
|
|
* modules: '67',
|
|||
|
|
* nghttp2: '1.34.0',
|
|||
|
|
* napi: '4',
|
|||
|
|
* llhttp: '1.1.1',
|
|||
|
|
* openssl: '1.1.1b',
|
|||
|
|
* cldr: '34.0',
|
|||
|
|
* icu: '63.1',
|
|||
|
|
* tz: '2018e',
|
|||
|
|
* unicode: '11.0' }
|
|||
|
|
* ```
|
|||
|
|
* @since v0.2.0
|
|||
|
|
*/
|
|||
|
|
readonly versions: ProcessVersions;
|
|||
|
|
/**
|
|||
|
|
* The `process.config` property returns an `Object` containing the JavaScript
|
|||
|
|
* representation of the configure options used to compile the current Node.js
|
|||
|
|
* executable. This is the same as the `config.gypi` file that was produced when
|
|||
|
|
* running the `./configure` script.
|
|||
|
|
*
|
|||
|
|
* An example of the possible output looks like:
|
|||
|
|
*
|
|||
|
|
* ```js
|
|||
|
|
* {
|
|||
|
|
* target_defaults:
|
|||
|
|
* { cflags: [],
|
|||
|
|
* default_configuration: 'Release',
|
|||
|
|
* defines: [],
|
|||
|
|
* include_dirs: [],
|
|||
|
|
* libraries: [] },
|
|||
|
|
* variables:
|
|||
|
|
* {
|
|||
|
|
* host_arch: 'x64',
|
|||
|
|
* napi_build_version: 5,
|
|||
|
|
* node_install_npm: 'true',
|
|||
|
|
* node_prefix: '',
|
|||
|
|
* node_shared_cares: 'false',
|
|||
|
|
* node_shared_http_parser: 'false',
|
|||
|
|
* node_shared_libuv: 'false',
|
|||
|
|
* node_shared_zlib: 'false',
|
|||
|
|
* node_use_dtrace: 'false',
|
|||
|
|
* node_use_openssl: 'true',
|
|||
|
|
* node_shared_openssl: 'false',
|
|||
|
|
* strict_aliasing: 'true',
|
|||
|
|
* target_arch: 'x64',
|
|||
|
|
* v8_use_snapshot: 1
|
|||
|
|
* }
|
|||
|
|
* }
|
|||
|
|
* ```
|
|||
|
|
*
|
|||
|
|
* The `process.config` property is **not** read-only and there are existing
|
|||
|
|
* modules in the ecosystem that are known to extend, modify, or entirely replace
|
|||
|
|
* the value of `process.config`.
|
|||
|
|
*
|
|||
|
|
* Modifying the `process.config` property, or any child-property of the`process.config` object has been deprecated. The `process.config` will be made
|
|||
|
|
* read-only in a future release.
|
|||
|
|
* @since v0.7.7
|
|||
|
|
*/
|
|||
|
|
readonly config: ProcessConfig;
|
|||
|
|
/**
|
|||
|
|
* The `process.kill()` method sends the `signal` to the process identified by`pid`.
|
|||
|
|
*
|
|||
|
|
* Signal names are strings such as `'SIGINT'` or `'SIGHUP'`. See `Signal Events` and [`kill(2)`](http://man7.org/linux/man-pages/man2/kill.2.html) for more information.
|
|||
|
|
*
|
|||
|
|
* This method will throw an error if the target `pid` does not exist. As a special
|
|||
|
|
* case, a signal of `0` can be used to test for the existence of a process.
|
|||
|
|
* Windows platforms will throw an error if the `pid` is used to kill a process
|
|||
|
|
* group.
|
|||
|
|
*
|
|||
|
|
* Even though the name of this function is `process.kill()`, it is really just a
|
|||
|
|
* signal sender, like the `kill` system call. The signal sent may do something
|
|||
|
|
* other than kill the target process.
|
|||
|
|
*
|
|||
|
|
* ```js
|
|||
|
|
* import process, { kill } from 'process';
|
|||
|
|
*
|
|||
|
|
* process.on('SIGHUP', () => {
|
|||
|
|
* console.log('Got SIGHUP signal.');
|
|||
|
|
* });
|
|||
|
|
*
|
|||
|
|
* setTimeout(() => {
|
|||
|
|
* console.log('Exiting.');
|
|||
|
|
* process.exit(0);
|
|||
|
|
* }, 100);
|
|||
|
|
*
|
|||
|
|
* kill(process.pid, 'SIGHUP');
|
|||
|
|
* ```
|
|||
|
|
*
|
|||
|
|
* When `SIGUSR1` is received by a Node.js process, Node.js will start the
|
|||
|
|
* debugger. See `Signal Events`.
|
|||
|
|
* @since v0.0.6
|
|||
|
|
* @param pid A process ID
|
|||
|
|
* @param [signal='SIGTERM'] The signal to send, either as a string or number.
|
|||
|
|
*/
|
|||
|
|
kill(pid: number, signal?: string | number): true;
|
|||
|
|
/**
|
|||
|
|
* The `process.pid` property returns the PID of the process.
|
|||
|
|
*
|
|||
|
|
* ```js
|
|||
|
|
* import { pid } from 'process';
|
|||
|
|
*
|
|||
|
|
* console.log(`This process is pid ${pid}`);
|
|||
|
|
* ```
|
|||
|
|
* @since v0.1.15
|
|||
|
|
*/
|
|||
|
|
readonly pid: number;
|
|||
|
|
/**
|
|||
|
|
* The `process.ppid` property returns the PID of the parent of the
|
|||
|
|
* current process.
|
|||
|
|
*
|
|||
|
|
* ```js
|
|||
|
|
* import { ppid } from 'process';
|
|||
|
|
*
|
|||
|
|
* console.log(`The parent process is pid ${ppid}`);
|
|||
|
|
* ```
|
|||
|
|
* @since v9.2.0, v8.10.0, v6.13.0
|
|||
|
|
*/
|
|||
|
|
readonly ppid: number;
|
|||
|
|
/**
|
|||
|
|
* The `process.title` property returns the current process title (i.e. returns
|
|||
|
|
* the current value of `ps`). Assigning a new value to `process.title` modifies
|
|||
|
|
* the current value of `ps`.
|
|||
|
|
*
|
|||
|
|
* When a new value is assigned, different platforms will impose different maximum
|
|||
|
|
* length restrictions on the title. Usually such restrictions are quite limited.
|
|||
|
|
* For instance, on Linux and macOS, `process.title` is limited to the size of the
|
|||
|
|
* binary name plus the length of the command-line arguments because setting the`process.title` overwrites the `argv` memory of the process. Node.js v0.8
|
|||
|
|
* allowed for longer process title strings by also overwriting the `environ`memory but that was potentially insecure and confusing in some (rather obscure)
|
|||
|
|
* cases.
|
|||
|
|
*
|
|||
|
|
* Assigning a value to `process.title` might not result in an accurate label
|
|||
|
|
* within process manager applications such as macOS Activity Monitor or Windows
|
|||
|
|
* Services Manager.
|
|||
|
|
* @since v0.1.104
|
|||
|
|
*/
|
|||
|
|
title: string;
|
|||
|
|
/**
|
|||
|
|
* The operating system CPU architecture for which the Node.js binary was compiled.
|
|||
|
|
* Possible values are: `'arm'`, `'arm64'`, `'ia32'`, `'mips'`,`'mipsel'`, `'ppc'`,`'ppc64'`, `'s390'`, `'s390x'`, `'x32'`, and `'x64'`.
|
|||
|
|
*
|
|||
|
|
* ```js
|
|||
|
|
* import { arch } from 'process';
|
|||
|
|
*
|
|||
|
|
* console.log(`This processor architecture is ${arch}`);
|
|||
|
|
* ```
|
|||
|
|
* @since v0.5.0
|
|||
|
|
*/
|
|||
|
|
readonly arch: string;
|
|||
|
|
/**
|
|||
|
|
* The `process.platform` property returns a string identifying the operating
|
|||
|
|
* system platform on which the Node.js process is running.
|
|||
|
|
*
|
|||
|
|
* Currently possible values are:
|
|||
|
|
*
|
|||
|
|
* * `'aix'`
|
|||
|
|
* * `'darwin'`
|
|||
|
|
* * `'freebsd'`
|
|||
|
|
* * `'linux'`
|
|||
|
|
* * `'openbsd'`
|
|||
|
|
* * `'sunos'`
|
|||
|
|
* * `'win32'`
|
|||
|
|
*
|
|||
|
|
* ```js
|
|||
|
|
* import { platform } from 'process';
|
|||
|
|
*
|
|||
|
|
* console.log(`This platform is ${platform}`);
|
|||
|
|
* ```
|
|||
|
|
*
|
|||
|
|
* The value `'android'` may also be returned if the Node.js is built on the
|
|||
|
|
* Android operating system. However, Android support in Node.js[is experimental](https://github.com/nodejs/node/blob/HEAD/BUILDING.md#androidandroid-based-devices-eg-firefox-os).
|
|||
|
|
* @since v0.1.16
|
|||
|
|
*/
|
|||
|
|
readonly platform: Platform;
|
|||
|
|
/**
|
|||
|
|
* The `process.mainModule` property provides an alternative way of retrieving `require.main`. The difference is that if the main module changes at
|
|||
|
|
* runtime, `require.main` may still refer to the original main module in
|
|||
|
|
* modules that were required before the change occurred. Generally, it's
|
|||
|
|
* safe to assume that the two refer to the same module.
|
|||
|
|
*
|
|||
|
|
* As with `require.main`, `process.mainModule` will be `undefined` if there
|
|||
|
|
* is no entry script.
|
|||
|
|
* @since v0.1.17
|
|||
|
|
* @deprecated Since v14.0.0 - Use `main` instead.
|
|||
|
|
*/
|
|||
|
|
mainModule?: Module | undefined;
|
|||
|
|
memoryUsage: MemoryUsageFn;
|
|||
|
|
/**
|
|||
|
|
* The `process.cpuUsage()` method returns the user and system CPU time usage of
|
|||
|
|
* the current process, in an object with properties `user` and `system`, whose
|
|||
|
|
* values are microsecond values (millionth of a second). These values measure time
|
|||
|
|
* spent in user and system code respectively, and may end up being greater than
|
|||
|
|
* actual elapsed time if multiple CPU cores are performing work for this process.
|
|||
|
|
*
|
|||
|
|
* The result of a previous call to `process.cpuUsage()` can be passed as the
|
|||
|
|
* argument to the function, to get a diff reading.
|
|||
|
|
*
|
|||
|
|
* ```js
|
|||
|
|
* import { cpuUsage } from 'process';
|
|||
|
|
*
|
|||
|
|
* const startUsage = cpuUsage();
|
|||
|
|
* // { user: 38579, system: 6986 }
|
|||
|
|
*
|
|||
|
|
* // spin the CPU for 500 milliseconds
|
|||
|
|
* const now = Date.now();
|
|||
|
|
* while (Date.now() - now < 500);
|
|||
|
|
*
|
|||
|
|
* console.log(cpuUsage(startUsage));
|
|||
|
|
* // { user: 514883, system: 11226 }
|
|||
|
|
* ```
|
|||
|
|
* @since v6.1.0
|
|||
|
|
* @param previousValue A previous return value from calling `process.cpuUsage()`
|
|||
|
|
*/
|
|||
|
|
cpuUsage(previousValue?: CpuUsage): CpuUsage;
|
|||
|
|
/**
|
|||
|
|
* `process.nextTick()` adds `callback` to the "next tick queue". This queue is
|
|||
|
|
* fully drained after the current operation on the JavaScript stack runs to
|
|||
|
|
* completion and before the event loop is allowed to continue. It's possible to
|
|||
|
|
* create an infinite loop if one were to recursively call `process.nextTick()`.
|
|||
|
|
* See the [Event Loop](https://nodejs.org/en/docs/guides/event-loop-timers-and-nexttick/#process-nexttick) guide for more background.
|
|||
|
|
*
|
|||
|
|
* ```js
|
|||
|
|
* import { nextTick } from 'process';
|
|||
|
|
*
|
|||
|
|
* console.log('start');
|
|||
|
|
* nextTick(() => {
|
|||
|
|
* console.log('nextTick callback');
|
|||
|
|
* });
|
|||
|
|
* console.log('scheduled');
|
|||
|
|
* // Output:
|
|||
|
|
* // start
|
|||
|
|
* // scheduled
|
|||
|
|
* // nextTick callback
|
|||
|
|
* ```
|
|||
|
|
*
|
|||
|
|
* This is important when developing APIs in order to give users the opportunity
|
|||
|
|
* to assign event handlers _after_ an object has been constructed but before any
|
|||
|
|
* I/O has occurred:
|
|||
|
|
*
|
|||
|
|
* ```js
|
|||
|
|
* import { nextTick } from 'process';
|
|||
|
|
*
|
|||
|
|
* function MyThing(options) {
|
|||
|
|
* this.setupOptions(options);
|
|||
|
|
*
|
|||
|
|
* nextTick(() => {
|
|||
|
|
* this.startDoingStuff();
|
|||
|
|
* });
|
|||
|
|
* }
|
|||
|
|
*
|
|||
|
|
* const thing = new MyThing();
|
|||
|
|
* thing.getReadyForStuff();
|
|||
|
|
*
|
|||
|
|
* // thing.startDoingStuff() gets called now, not before.
|
|||
|
|
* ```
|
|||
|
|
*
|
|||
|
|
* It is very important for APIs to be either 100% synchronous or 100%
|
|||
|
|
* asynchronous. Consider this example:
|
|||
|
|
*
|
|||
|
|
* ```js
|
|||
|
|
* // WARNING! DO NOT USE! BAD UNSAFE HAZARD!
|
|||
|
|
* function maybeSync(arg, cb) {
|
|||
|
|
* if (arg) {
|
|||
|
|
* cb();
|
|||
|
|
* return;
|
|||
|
|
* }
|
|||
|
|
*
|
|||
|
|
* fs.stat('file', cb);
|
|||
|
|
* }
|
|||
|
|
* ```
|
|||
|
|
*
|
|||
|
|
* This API is hazardous because in the following case:
|
|||
|
|
*
|
|||
|
|
* ```js
|
|||
|
|
* const maybeTrue = Math.random() > 0.5;
|
|||
|
|
*
|
|||
|
|
* maybeSync(maybeTrue, () => {
|
|||
|
|
* foo();
|
|||
|
|
* });
|
|||
|
|
*
|
|||
|
|
* bar();
|
|||
|
|
* ```
|
|||
|
|
*
|
|||
|
|
* It is not clear whether `foo()` or `bar()` will be called first.
|
|||
|
|
*
|
|||
|
|
* The following approach is much better:
|
|||
|
|
*
|
|||
|
|
* ```js
|
|||
|
|
* import { nextTick } from 'process';
|
|||
|
|
*
|
|||
|
|
* function definitelyAsync(arg, cb) {
|
|||
|
|
* if (arg) {
|
|||
|
|
* nextTick(cb);
|
|||
|
|
* return;
|
|||
|
|
* }
|
|||
|
|
*
|
|||
|
|
* fs.stat('file', cb);
|
|||
|
|
* }
|
|||
|
|
* ```
|
|||
|
|
* @since v0.1.26
|
|||
|
|
* @param args Additional arguments to pass when invoking the `callback`
|
|||
|
|
*/
|
|||
|
|
nextTick(callback: Function, ...args: any[]): void;
|
|||
|
|
/**
|
|||
|
|
* The `process.release` property returns an `Object` containing metadata related
|
|||
|
|
* to the current release, including URLs for the source tarball and headers-only
|
|||
|
|
* tarball.
|
|||
|
|
*
|
|||
|
|
* `process.release` contains the following properties:
|
|||
|
|
*
|
|||
|
|
* ```js
|
|||
|
|
* {
|
|||
|
|
* name: 'node',
|
|||
|
|
* lts: 'Erbium',
|
|||
|
|
* sourceUrl: 'https://nodejs.org/download/release/v12.18.1/node-v12.18.1.tar.gz',
|
|||
|
|
* headersUrl: 'https://nodejs.org/download/release/v12.18.1/node-v12.18.1-headers.tar.gz',
|
|||
|
|
* libUrl: 'https://nodejs.org/download/release/v12.18.1/win-x64/node.lib'
|
|||
|
|
* }
|
|||
|
|
* ```
|
|||
|
|
*
|
|||
|
|
* In custom builds from non-release versions of the source tree, only the`name` property may be present. The additional properties should not be
|
|||
|
|
* relied upon to exist.
|
|||
|
|
* @since v3.0.0
|
|||
|
|
*/
|
|||
|
|
readonly release: ProcessRelease;
|
|||
|
|
features: {
|
|||
|
|
inspector: boolean;
|
|||
|
|
debug: boolean;
|
|||
|
|
uv: boolean;
|
|||
|
|
ipv6: boolean;
|
|||
|
|
tls_alpn: boolean;
|
|||
|
|
tls_sni: boolean;
|
|||
|
|
tls_ocsp: boolean;
|
|||
|
|
tls: boolean;
|
|||
|
|
};
|
|||
|
|
/**
|
|||
|
|
* `process.umask()` returns the Node.js process's file mode creation mask. Child
|
|||
|
|
* processes inherit the mask from the parent process.
|
|||
|
|
* @since v0.1.19
|
|||
|
|
* @deprecated Calling `process.umask()` with no argument causes the process-wide umask to be written twice. This introduces a race condition between threads, and is a potential *
|
|||
|
|
* security vulnerability. There is no safe, cross-platform alternative API.
|
|||
|
|
*/
|
|||
|
|
umask(): number;
|
|||
|
|
/**
|
|||
|
|
* Can only be set if not in worker thread.
|
|||
|
|
*/
|
|||
|
|
umask(mask: string | number): number;
|
|||
|
|
/**
|
|||
|
|
* The `process.uptime()` method returns the number of seconds the current Node.js
|
|||
|
|
* process has been running.
|
|||
|
|
*
|
|||
|
|
* The return value includes fractions of a second. Use `Math.floor()` to get whole
|
|||
|
|
* seconds.
|
|||
|
|
* @since v0.5.0
|
|||
|
|
*/
|
|||
|
|
uptime(): number;
|
|||
|
|
hrtime: HRTime;
|
|||
|
|
/**
|
|||
|
|
* If Node.js is spawned with an IPC channel, the `process.send()` method can be
|
|||
|
|
* used to send messages to the parent process. Messages will be received as a `'message'` event on the parent's `ChildProcess` object.
|
|||
|
|
*
|
|||
|
|
* If Node.js was not spawned with an IPC channel, `process.send` will be`undefined`.
|
|||
|
|
*
|
|||
|
|
* The message goes through serialization and parsing. The resulting message might
|
|||
|
|
* not be the same as what is originally sent.
|
|||
|
|
* @since v0.5.9
|
|||
|
|
* @param options used to parameterize the sending of certain types of handles.`options` supports the following properties:
|
|||
|
|
*/
|
|||
|
|
send?(
|
|||
|
|
message: any,
|
|||
|
|
sendHandle?: any,
|
|||
|
|
options?: {
|
|||
|
|
swallowErrors?: boolean | undefined;
|
|||
|
|
},
|
|||
|
|
callback?: (error: Error | null) => void
|
|||
|
|
): boolean;
|
|||
|
|
/**
|
|||
|
|
* If the Node.js process is spawned with an IPC channel (see the `Child Process` and `Cluster` documentation), the `process.disconnect()` method will close the
|
|||
|
|
* IPC channel to the parent process, allowing the child process to exit gracefully
|
|||
|
|
* once there are no other connections keeping it alive.
|
|||
|
|
*
|
|||
|
|
* The effect of calling `process.disconnect()` is the same as calling `ChildProcess.disconnect()` from the parent process.
|
|||
|
|
*
|
|||
|
|
* If the Node.js process was not spawned with an IPC channel,`process.disconnect()` will be `undefined`.
|
|||
|
|
* @since v0.7.2
|
|||
|
|
*/
|
|||
|
|
disconnect(): void;
|
|||
|
|
/**
|
|||
|
|
* If the Node.js process is spawned with an IPC channel (see the `Child Process` and `Cluster` documentation), the `process.connected` property will return`true` so long as the IPC
|
|||
|
|
* channel is connected and will return `false` after`process.disconnect()` is called.
|
|||
|
|
*
|
|||
|
|
* Once `process.connected` is `false`, it is no longer possible to send messages
|
|||
|
|
* over the IPC channel using `process.send()`.
|
|||
|
|
* @since v0.7.2
|
|||
|
|
*/
|
|||
|
|
connected: boolean;
|
|||
|
|
/**
|
|||
|
|
* The `process.allowedNodeEnvironmentFlags` property is a special,
|
|||
|
|
* read-only `Set` of flags allowable within the `NODE_OPTIONS` environment variable.
|
|||
|
|
*
|
|||
|
|
* `process.allowedNodeEnvironmentFlags` extends `Set`, but overrides`Set.prototype.has` to recognize several different possible flag
|
|||
|
|
* representations. `process.allowedNodeEnvironmentFlags.has()` will
|
|||
|
|
* return `true` in the following cases:
|
|||
|
|
*
|
|||
|
|
* * Flags may omit leading single (`-`) or double (`--`) dashes; e.g.,`inspect-brk` for `--inspect-brk`, or `r` for `-r`.
|
|||
|
|
* * Flags passed through to V8 (as listed in `--v8-options`) may replace
|
|||
|
|
* one or more _non-leading_ dashes for an underscore, or vice-versa;
|
|||
|
|
* e.g., `--perf_basic_prof`, `--perf-basic-prof`, `--perf_basic-prof`,
|
|||
|
|
* etc.
|
|||
|
|
* * Flags may contain one or more equals (`=`) characters; all
|
|||
|
|
* characters after and including the first equals will be ignored;
|
|||
|
|
* e.g., `--stack-trace-limit=100`.
|
|||
|
|
* * Flags _must_ be allowable within `NODE_OPTIONS`.
|
|||
|
|
*
|
|||
|
|
* When iterating over `process.allowedNodeEnvironmentFlags`, flags will
|
|||
|
|
* appear only _once_; each will begin with one or more dashes. Flags
|
|||
|
|
* passed through to V8 will contain underscores instead of non-leading
|
|||
|
|
* dashes:
|
|||
|
|
*
|
|||
|
|
* ```js
|
|||
|
|
* import { allowedNodeEnvironmentFlags } from 'process';
|
|||
|
|
*
|
|||
|
|
* allowedNodeEnvironmentFlags.forEach((flag) => {
|
|||
|
|
* // -r
|
|||
|
|
* // --inspect-brk
|
|||
|
|
* // --abort_on_uncaught_exception
|
|||
|
|
* // ...
|
|||
|
|
* });
|
|||
|
|
* ```
|
|||
|
|
*
|
|||
|
|
* The methods `add()`, `clear()`, and `delete()` of`process.allowedNodeEnvironmentFlags` do nothing, and will fail
|
|||
|
|
* silently.
|
|||
|
|
*
|
|||
|
|
* If Node.js was compiled _without_ `NODE_OPTIONS` support (shown in {@link config}), `process.allowedNodeEnvironmentFlags` will
|
|||
|
|
* contain what _would have_ been allowable.
|
|||
|
|
* @since v10.10.0
|
|||
|
|
*/
|
|||
|
|
allowedNodeEnvironmentFlags: ReadonlySet<string>;
|
|||
|
|
/**
|
|||
|
|
* `process.report` is an object whose methods are used to generate diagnostic
|
|||
|
|
* reports for the current process. Additional documentation is available in the `report documentation`.
|
|||
|
|
* @since v11.8.0
|
|||
|
|
*/
|
|||
|
|
report?: ProcessReport | undefined;
|
|||
|
|
/**
|
|||
|
|
* ```js
|
|||
|
|
* import { resourceUsage } from 'process';
|
|||
|
|
*
|
|||
|
|
* console.log(resourceUsage());
|
|||
|
|
* /*
|
|||
|
|
* Will output:
|
|||
|
|
* {
|
|||
|
|
* userCPUTime: 82872,
|
|||
|
|
* systemCPUTime: 4143,
|
|||
|
|
* maxRSS: 33164,
|
|||
|
|
* sharedMemorySize: 0,
|
|||
|
|
* unsharedDataSize: 0,
|
|||
|
|
* unsharedStackSize: 0,
|
|||
|
|
* minorPageFault: 2469,
|
|||
|
|
* majorPageFault: 0,
|
|||
|
|
* swappedOut: 0,
|
|||
|
|
* fsRead: 0,
|
|||
|
|
* fsWrite: 8,
|
|||
|
|
* ipcSent: 0,
|
|||
|
|
* ipcReceived: 0,
|
|||
|
|
* signalsCount: 0,
|
|||
|
|
* voluntaryContextSwitches: 79,
|
|||
|
|
* involuntaryContextSwitches: 1
|
|||
|
|
* }
|
|||
|
|
*
|
|||
|
|
* ```
|
|||
|
|
* @since v12.6.0
|
|||
|
|
* @return the resource usage for the current process. All of these values come from the `uv_getrusage` call which returns a [`uv_rusage_t` struct][uv_rusage_t].
|
|||
|
|
*/
|
|||
|
|
resourceUsage(): ResourceUsage;
|
|||
|
|
/**
|
|||
|
|
* The `process.traceDeprecation` property indicates whether the`--trace-deprecation` flag is set on the current Node.js process. See the
|
|||
|
|
* documentation for the `'warning' event` and the `emitWarning() method` for more information about this
|
|||
|
|
* flag's behavior.
|
|||
|
|
* @since v0.8.0
|
|||
|
|
*/
|
|||
|
|
traceDeprecation: boolean;
|
|||
|
|
/* EventEmitter */
|
|||
|
|
addListener(event: 'beforeExit', listener: BeforeExitListener): this;
|
|||
|
|
addListener(event: 'disconnect', listener: DisconnectListener): this;
|
|||
|
|
addListener(event: 'exit', listener: ExitListener): this;
|
|||
|
|
addListener(event: 'rejectionHandled', listener: RejectionHandledListener): this;
|
|||
|
|
addListener(event: 'uncaughtException', listener: UncaughtExceptionListener): this;
|
|||
|
|
addListener(event: 'uncaughtExceptionMonitor', listener: UncaughtExceptionListener): this;
|
|||
|
|
addListener(event: 'unhandledRejection', listener: UnhandledRejectionListener): this;
|
|||
|
|
addListener(event: 'warning', listener: WarningListener): this;
|
|||
|
|
addListener(event: 'message', listener: MessageListener): this;
|
|||
|
|
addListener(event: Signals, listener: SignalsListener): this;
|
|||
|
|
addListener(event: 'multipleResolves', listener: MultipleResolveListener): this;
|
|||
|
|
addListener(event: 'worker', listener: WorkerListener): this;
|
|||
|
|
emit(event: 'beforeExit', code: number): boolean;
|
|||
|
|
emit(event: 'disconnect'): boolean;
|
|||
|
|
emit(event: 'exit', code: number): boolean;
|
|||
|
|
emit(event: 'rejectionHandled', promise: Promise<unknown>): boolean;
|
|||
|
|
emit(event: 'uncaughtException', error: Error): boolean;
|
|||
|
|
emit(event: 'uncaughtExceptionMonitor', error: Error): boolean;
|
|||
|
|
emit(event: 'unhandledRejection', reason: unknown, promise: Promise<unknown>): boolean;
|
|||
|
|
emit(event: 'warning', warning: Error): boolean;
|
|||
|
|
emit(event: 'message', message: unknown, sendHandle: unknown): this;
|
|||
|
|
emit(event: Signals, signal: Signals): boolean;
|
|||
|
|
emit(event: 'multipleResolves', type: MultipleResolveType, promise: Promise<unknown>, value: unknown): this;
|
|||
|
|
emit(event: 'worker', listener: WorkerListener): this;
|
|||
|
|
on(event: 'beforeExit', listener: BeforeExitListener): this;
|
|||
|
|
on(event: 'disconnect', listener: DisconnectListener): this;
|
|||
|
|
on(event: 'exit', listener: ExitListener): this;
|
|||
|
|
on(event: 'rejectionHandled', listener: RejectionHandledListener): this;
|
|||
|
|
on(event: 'uncaughtException', listener: UncaughtExceptionListener): this;
|
|||
|
|
on(event: 'uncaughtExceptionMonitor', listener: UncaughtExceptionListener): this;
|
|||
|
|
on(event: 'unhandledRejection', listener: UnhandledRejectionListener): this;
|
|||
|
|
on(event: 'warning', listener: WarningListener): this;
|
|||
|
|
on(event: 'message', listener: MessageListener): this;
|
|||
|
|
on(event: Signals, listener: SignalsListener): this;
|
|||
|
|
on(event: 'multipleResolves', listener: MultipleResolveListener): this;
|
|||
|
|
on(event: 'worker', listener: WorkerListener): this;
|
|||
|
|
on(event: string | symbol, listener: (...args: any[]) => void): this;
|
|||
|
|
once(event: 'beforeExit', listener: BeforeExitListener): this;
|
|||
|
|
once(event: 'disconnect', listener: DisconnectListener): this;
|
|||
|
|
once(event: 'exit', listener: ExitListener): this;
|
|||
|
|
once(event: 'rejectionHandled', listener: RejectionHandledListener): this;
|
|||
|
|
once(event: 'uncaughtException', listener: UncaughtExceptionListener): this;
|
|||
|
|
once(event: 'uncaughtExceptionMonitor', listener: UncaughtExceptionListener): this;
|
|||
|
|
once(event: 'unhandledRejection', listener: UnhandledRejectionListener): this;
|
|||
|
|
once(event: 'warning', listener: WarningListener): this;
|
|||
|
|
once(event: 'message', listener: MessageListener): this;
|
|||
|
|
once(event: Signals, listener: SignalsListener): this;
|
|||
|
|
once(event: 'multipleResolves', listener: MultipleResolveListener): this;
|
|||
|
|
once(event: 'worker', listener: WorkerListener): this;
|
|||
|
|
once(event: string | symbol, listener: (...args: any[]) => void): this;
|
|||
|
|
prependListener(event: 'beforeExit', listener: BeforeExitListener): this;
|
|||
|
|
prependListener(event: 'disconnect', listener: DisconnectListener): this;
|
|||
|
|
prependListener(event: 'exit', listener: ExitListener): this;
|
|||
|
|
prependListener(event: 'rejectionHandled', listener: RejectionHandledListener): this;
|
|||
|
|
prependListener(event: 'uncaughtException', listener: UncaughtExceptionListener): this;
|
|||
|
|
prependListener(event: 'uncaughtExceptionMonitor', listener: UncaughtExceptionListener): this;
|
|||
|
|
prependListener(event: 'unhandledRejection', listener: UnhandledRejectionListener): this;
|
|||
|
|
prependListener(event: 'warning', listener: WarningListener): this;
|
|||
|
|
prependListener(event: 'message', listener: MessageListener): this;
|
|||
|
|
prependListener(event: Signals, listener: SignalsListener): this;
|
|||
|
|
prependListener(event: 'multipleResolves', listener: MultipleResolveListener): this;
|
|||
|
|
prependListener(event: 'worker', listener: WorkerListener): this;
|
|||
|
|
prependOnceListener(event: 'beforeExit', listener: BeforeExitListener): this;
|
|||
|
|
prependOnceListener(event: 'disconnect', listener: DisconnectListener): this;
|
|||
|
|
prependOnceListener(event: 'exit', listener: ExitListener): this;
|
|||
|
|
prependOnceListener(event: 'rejectionHandled', listener: RejectionHandledListener): this;
|
|||
|
|
prependOnceListener(event: 'uncaughtException', listener: UncaughtExceptionListener): this;
|
|||
|
|
prependOnceListener(event: 'uncaughtExceptionMonitor', listener: UncaughtExceptionListener): this;
|
|||
|
|
prependOnceListener(event: 'unhandledRejection', listener: UnhandledRejectionListener): this;
|
|||
|
|
prependOnceListener(event: 'warning', listener: WarningListener): this;
|
|||
|
|
prependOnceListener(event: 'message', listener: MessageListener): this;
|
|||
|
|
prependOnceListener(event: Signals, listener: SignalsListener): this;
|
|||
|
|
prependOnceListener(event: 'multipleResolves', listener: MultipleResolveListener): this;
|
|||
|
|
prependOnceListener(event: 'worker', listener: WorkerListener): this;
|
|||
|
|
listeners(event: 'beforeExit'): BeforeExitListener[];
|
|||
|
|
listeners(event: 'disconnect'): DisconnectListener[];
|
|||
|
|
listeners(event: 'exit'): ExitListener[];
|
|||
|
|
listeners(event: 'rejectionHandled'): RejectionHandledListener[];
|
|||
|
|
listeners(event: 'uncaughtException'): UncaughtExceptionListener[];
|
|||
|
|
listeners(event: 'uncaughtExceptionMonitor'): UncaughtExceptionListener[];
|
|||
|
|
listeners(event: 'unhandledRejection'): UnhandledRejectionListener[];
|
|||
|
|
listeners(event: 'warning'): WarningListener[];
|
|||
|
|
listeners(event: 'message'): MessageListener[];
|
|||
|
|
listeners(event: Signals): SignalsListener[];
|
|||
|
|
listeners(event: 'multipleResolves'): MultipleResolveListener[];
|
|||
|
|
listeners(event: 'worker'): WorkerListener[];
|
|||
|
|
}
|
|||
|
|
}
|
|||
|
|
}
|
|||
|
|
export = process;
|
|||
|
|
}
|
|||
|
|
declare module 'node:process' {
|
|||
|
|
import process = require('process');
|
|||
|
|
export = process;
|
|||
|
|
}
|