Difference between revisions of "Node --help"

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 +
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node --help
 +
Usage: node [options] [ script.js ] [arguments]
 +
        [[node inspect]] [options] [ script.js | host:port ] [arguments]
 +
<pre>
 +
 +
Options:
 +
  -                          script read from stdin (default if no
 +
                              file name is provided, interactive mode
 +
                              if a tty)
 +
  --                          indicate the end of node options
 +
  --abort-on-uncaught-exception
 +
                              aborting instead of exiting causes a
 +
                              core file to be generated for analysis
 +
  -c, --check                syntax check script without executing
 +
  --completion-bash          print source-able bash completion
 +
                              script
 +
  -C, --conditions=...        additional user conditions for
 +
                              conditional exports and imports
 +
  --cpu-prof                  Start the V8 CPU profiler on start up,
 +
                              and write the CPU profile to disk
 +
                              before exit. If --cpu-prof-dir is not
 +
                              specified, write the profile to the
 +
                              current working directory.
 +
  --cpu-prof-dir=...          Directory where the V8 profiles
 +
                              generated by --cpu-prof will be placed.
 +
                              Does not affect --prof.
 +
  --cpu-prof-interval=...    specified sampling interval in
 +
                              microseconds for the V8 CPU profile
 +
                              generated with --cpu-prof. (default:
 +
                              1000)
 +
  --cpu-prof-name=...        specified file name of the V8 CPU
 +
                              profile generated with --cpu-prof
 +
  --diagnostic-dir=...        set dir for all output files (default:
 +
                              current working directory)
 +
  --disable-proto=...        disable Object.prototype.__proto__
 +
  --disallow-code-generation-from-strings
 +
                              disallow eval and friends
 +
  --dns-result-order=...      set default value of verbatim in
 +
                              dns.lookup. Options are 'ipv4first'
 +
                              (IPv4 addresses are placed before IPv6
 +
                              addresses) 'verbatim' (addresses are in
 +
                              the order the DNS resolver returned)
 +
  --enable-fips              enable FIPS crypto at startup
 +
  --enable-source-maps        Source Map V3 support for stack traces
 +
  -e, --eval=...              evaluate script
 +
  --experimental-import-meta-resolve
 +
                              experimental ES Module
 +
                              import.meta.resolve() support
 +
  --experimental-json-modules experimental JSON interop support for
 +
                              the ES Module loader
 +
  --loader, --experimental-loader=...
 +
                              use the specified module as a custom
 +
                              loader
 +
  --experimental-policy=...  use the specified file as a security
 +
                              policy
 +
  --es-module-specifier-resolution, --experimental-specifier-resolution=...
 +
                              Select extension resolution algorithm
 +
                              for es modules; either 'explicit'
 +
                              (default) or 'node'
 +
  --experimental-vm-modules  experimental ES Module support in vm
 +
                              module
 +
  --experimental-wasi-unstable-preview1
 +
                              experimental WASI support
 +
  --experimental-wasm-modules experimental ES Module support for
 +
                              webassembly modules
 +
  --force-context-aware      disable loading non-context-aware
 +
                              addons
 +
  --force-fips                force FIPS crypto (cannot be disabled)
 +
  --frozen-intrinsics        experimental frozen intrinsics support
 +
  --heap-prof                Start the V8 heap profiler on start up,
 +
                              and write the heap profile to disk
 +
                              before exit. If --heap-prof-dir is not
 +
                              specified, write the profile to the
 +
                              current working directory.
 +
  --heap-prof-dir=...        Directory where the V8 heap profiles
 +
                              generated by --heap-prof will be
 +
                              placed.
 +
  --heap-prof-interval=...    specified sampling interval in bytes
 +
                              for the V8 heap profile generated with
 +
                              --heap-prof. (default: 512 * 1024)
 +
  --heap-prof-name=...        specified file name of the V8 heap
 +
                              profile generated with --heap-prof
 +
  --heapsnapshot-near-heap-limit=...
 +
                              Generate heap snapshots whenever V8 is
 +
                              approaching the heap limit. No more
 +
                              than the specified number of heap
 +
                              snapshots will be generated.
 +
  --heapsnapshot-signal=...  Generate heap snapshot on specified
 +
                              signal
 +
  -h, --help                  print node command line options
 +
                              (currently set)
 +
  --huge-max-old-generation-size
 +
                              increase default maximum heap size on
 +
                              machines with 16GB memory or more
 +
  --icu-data-dir=...          set ICU data load path to dir
 +
                              (overrides NODE_ICU_DATA) (note:
 +
                              linked-in ICU data is present)
 +
  --input-type=...            set module type for string input
 +
  --insecure-http-parser      use an insecure HTTP parser that
 +
                              accepts invalid HTTP headers
 +
  --inspect[=[host:]port]    activate inspector on host:port
 +
                              (default: 127.0.0.1:9229)
 +
  --inspect-brk[=[host:]port] activate inspector on host:port and
 +
                              break at start of user script
 +
  --debug-port, --inspect-port=[host:]port
 +
                              set host:port for inspector
 +
  --inspect-publish-uid=...  comma separated list of destinations
 +
                              for inspector uid(default: stderr,http)
 +
  -i, --interactive          always enter the REPL even if stdin
 +
                              does not appear to be a terminal
 +
  --interpreted-frames-native-stack
 +
                              help system profilers to translate
 +
                              JavaScript interpreted frames
 +
  --jitless                  disable runtime allocation of
 +
                              executable memory
 +
  --max-http-header-size=...  set the maximum size of HTTP headers
 +
                              (default: 16384 (16KB))
 +
  --no-addons                disable loading native addons
 +
  --no-deprecation            silence deprecation warnings
 +
  --no-experimental-repl-await
 +
                              experimental await keyword support in
 +
                              REPL
 +
  --no-extra-info-on-fatal-exception
 +
                              hide extra information on fatal
 +
                              exception that causes exit
 +
  --no-force-async-hooks-checks
 +
                              disable checks for async_hooks
 +
  --no-global-search-paths    disable global module search paths
 +
  --no-warnings              silence all process warnings
 +
  --node-memory-debug        Run with extra debug checks for memory
 +
                              leaks in Node.js itself
 +
  --openssl-config=...        load OpenSSL configuration from the
 +
                              specified file (overrides OPENSSL_CONF)
 +
  --pending-deprecation      emit pending deprecation warnings
 +
  --policy-integrity=...      ensure the security policy contents
 +
                              match the specified integrity
 +
  --preserve-symlinks        preserve symbolic links when resolving
 +
  --preserve-symlinks-main    preserve symbolic links when resolving
 +
                              the main module
 +
  -p, --print [...]          evaluate script and print result
 +
  --prof                      Generate V8 profiler output.
 +
  --prof-process              process V8 profiler output generated
 +
                              using --prof
 +
  --redirect-warnings=...    write warnings to file instead of
 +
                              stderr
 +
  --report-compact            output compact single-line JSON
 +
  --report-directory, --report-dir=...
 +
                              define custom report pathname.
 +
                              (default: current working directory)
 +
  --report-filename=...      define custom report file name.
 +
                              (default:
 +
                              YYYYMMDD.HHMMSS.PID.SEQUENCE#.txt)
 +
  --report-on-fatalerror      generate diagnostic report on fatal
 +
                              (internal) errors
 +
  --report-on-signal          generate diagnostic report upon
 +
                              receiving signals
 +
  --report-signal=...        causes diagnostic report to be produced
 +
                              on provided signal, unsupported in
 +
                              Windows. (default: SIGUSR2)
 +
  --report-uncaught-exception generate diagnostic report on uncaught
 +
                              exceptions
 +
  -r, --require=...          module to preload (option can be
 +
                              repeated)
 +
  --secure-heap=...          total size of the OpenSSL secure heap
 +
  --secure-heap-min=...      minimum allocation size from the
 +
                              OpenSSL secure heap
 +
  --throw-deprecation        throw an exception on deprecations
 +
  --title=...                the process title to use on startup
 +
  --tls-cipher-list=...      use an alternative default TLS cipher
 +
                              list
 +
  --tls-keylog=...            log TLS decryption keys to named file
 +
                              for traffic analysis
 +
  --tls-max-v1.2              set default TLS maximum to TLSv1.2
 +
                              (default: TLSv1.3)
 +
  --tls-max-v1.3              set default TLS maximum to TLSv1.3
 +
                              (default: TLSv1.3)
 +
  --tls-min-v1.0              set default TLS minimum to TLSv1.0
 +
                              (default: TLSv1.2)
 +
  --tls-min-v1.1              set default TLS minimum to TLSv1.1
 +
                              (default: TLSv1.2)
 +
  --tls-min-v1.2              set default TLS minimum to TLSv1.2
 +
                              (default: TLSv1.2)
 +
  --tls-min-v1.3              set default TLS minimum to TLSv1.3
 +
                              (default: TLSv1.2)
 +
  --trace-atomics-wait        trace Atomics.wait() operations
 +
  --trace-deprecation        show stack traces on deprecations
 +
  --trace-event-categories=...
 +
                              comma separated list of trace event
 +
                              categories to record
 +
  --trace-event-file-pattern=...
 +
                              Template string specifying the filepath
 +
                              for the trace-events data, it supports
 +
                              ${rotation} and ${pid}.
 +
  --trace-exit                show stack trace when an environment
 +
                              exits
 +
  --trace-sigint              enable printing JavaScript stacktrace
 +
                              on SIGINT
 +
  --trace-sync-io            show stack trace when use of sync IO is
 +
                              detected after the first tick
 +
  --trace-tls                prints TLS packet trace information to
 +
                              stderr
 +
  --trace-uncaught            show stack traces for the `throw`
 +
                              behind uncaught exceptions
 +
  --trace-warnings            show stack traces on process warnings
 +
  --track-heap-objects        track heap object allocations for heap
 +
                              snapshots
 +
  --unhandled-rejections=...  define unhandled rejections behavior.
 +
                              Options are 'strict' (always raise an
 +
                              error), 'throw' (raise an error unless
 +
                              'unhandledRejection' hook is set),
 +
                              'warn' (log a warning), 'none' (silence
 +
                              warnings), 'warn-with-error-code' (log
 +
                              a warning and set exit code 1 unless
 +
                              'unhandledRejection' hook is set).
 +
                              (default: throw)
 +
  --use-bundled-ca            use bundled CA store
 +
  --use-largepages=...        Map the Node.js static code to large
 +
                              pages. Options are 'off' (the default
 +
                              value, meaning do not map), 'on' (map
 +
                              and ignore failure, reporting it to
 +
                              stderr), or 'silent' (map and silently
 +
                              ignore failure)
 +
  --use-openssl-ca            use OpenSSL's default CA store
 +
                              (default)
 +
  --v8-options                print V8 command line options
 +
  --v8-pool-size=...          set V8's thread pool size
 +
  -v, --version              print Node.js version
 +
  --zero-fill-buffers        automatically zero-fill all newly
 +
                              allocated Buffer and SlowBuffer
 +
                              instances
 +
 +
Environment variables:
 +
FORCE_COLOR                when set to 'true', 1, 2, 3, or an
 +
                            empty string causes NO_COLOR and
 +
                            NODE_DISABLE_COLORS to be ignored.
 +
NO_COLOR                    Alias for NODE_DISABLE_COLORS
 +
NODE_DEBUG                  ','-separated list of core modules that
 +
                            should print debug information
 +
NODE_DEBUG_NATIVE          ','-separated list of C++ core debug
 +
                            categories that should print debug
 +
                            output
 +
NODE_DISABLE_COLORS        set to 1 to disable colors in the REPL
 +
NODE_EXTRA_CA_CERTS        path to additional CA certificates
 +
                            file. Only read once during process
 +
                            startup.
 +
NODE_NO_WARNINGS            set to 1 to silence process warnings
 +
NODE_PATH                  ':'-separated list of directories
 +
                            prefixed to the module search path
 +
NODE_PENDING_DEPRECATION    set to 1 to emit pending deprecation
 +
                            warnings
 +
NODE_PENDING_PIPE_INSTANCES set the number of pending pipe instance
 +
                            handles on Windows
 +
NODE_PRESERVE_SYMLINKS      set to 1 to preserve symbolic links
 +
                            when resolving and caching modules
 +
NODE_REDIRECT_WARNINGS      write warnings to path instead of
 +
                            stderr
 +
NODE_REPL_HISTORY          path to the persistent REPL history
 +
                            file
 +
NODE_TLS_REJECT_UNAUTHORIZED
 +
                            set to 0 to disable TLS certificate
 +
                            validation
 +
NODE_V8_COVERAGE            directory to output v8 coverage JSON to
 +
UV_THREADPOOL_SIZE          sets the number of threads used in
 +
                            libuv's threadpool
 +
 +
Documentation can be found at https://nodejs.org/
 +
</pre>
  
 
== See also ==
 
== See also ==

Latest revision as of 03:04, 1 March 2022


node --help
Usage: node [options] [ script.js ] [arguments]
       node inspect [options] [ script.js | host:port ] [arguments]


Options:
  -                           script read from stdin (default if no
                              file name is provided, interactive mode
                              if a tty)
  --                          indicate the end of node options
  --abort-on-uncaught-exception
                              aborting instead of exiting causes a
                              core file to be generated for analysis
  -c, --check                 syntax check script without executing
  --completion-bash           print source-able bash completion
                              script
  -C, --conditions=...        additional user conditions for
                              conditional exports and imports
  --cpu-prof                  Start the V8 CPU profiler on start up,
                              and write the CPU profile to disk
                              before exit. If --cpu-prof-dir is not
                              specified, write the profile to the
                              current working directory.
  --cpu-prof-dir=...          Directory where the V8 profiles
                              generated by --cpu-prof will be placed.
                              Does not affect --prof.
  --cpu-prof-interval=...     specified sampling interval in
                              microseconds for the V8 CPU profile
                              generated with --cpu-prof. (default:
                              1000)
  --cpu-prof-name=...         specified file name of the V8 CPU
                              profile generated with --cpu-prof
  --diagnostic-dir=...        set dir for all output files (default:
                              current working directory)
  --disable-proto=...         disable Object.prototype.__proto__
  --disallow-code-generation-from-strings
                              disallow eval and friends
  --dns-result-order=...      set default value of verbatim in
                              dns.lookup. Options are 'ipv4first'
                              (IPv4 addresses are placed before IPv6
                              addresses) 'verbatim' (addresses are in
                              the order the DNS resolver returned)
  --enable-fips               enable FIPS crypto at startup
  --enable-source-maps        Source Map V3 support for stack traces
  -e, --eval=...              evaluate script
  --experimental-import-meta-resolve
                              experimental ES Module
                              import.meta.resolve() support
  --experimental-json-modules experimental JSON interop support for
                              the ES Module loader
  --loader, --experimental-loader=...
                              use the specified module as a custom
                              loader
  --experimental-policy=...   use the specified file as a security
                              policy
  --es-module-specifier-resolution, --experimental-specifier-resolution=...
                              Select extension resolution algorithm
                              for es modules; either 'explicit'
                              (default) or 'node'
  --experimental-vm-modules   experimental ES Module support in vm
                              module
  --experimental-wasi-unstable-preview1
                              experimental WASI support
  --experimental-wasm-modules experimental ES Module support for
                              webassembly modules
  --force-context-aware       disable loading non-context-aware
                              addons
  --force-fips                force FIPS crypto (cannot be disabled)
  --frozen-intrinsics         experimental frozen intrinsics support
  --heap-prof                 Start the V8 heap profiler on start up,
                              and write the heap profile to disk
                              before exit. If --heap-prof-dir is not
                              specified, write the profile to the
                              current working directory.
  --heap-prof-dir=...         Directory where the V8 heap profiles
                              generated by --heap-prof will be
                              placed.
  --heap-prof-interval=...    specified sampling interval in bytes
                              for the V8 heap profile generated with
                              --heap-prof. (default: 512 * 1024)
  --heap-prof-name=...        specified file name of the V8 heap
                              profile generated with --heap-prof
  --heapsnapshot-near-heap-limit=...
                              Generate heap snapshots whenever V8 is
                              approaching the heap limit. No more
                              than the specified number of heap
                              snapshots will be generated.
  --heapsnapshot-signal=...   Generate heap snapshot on specified
                              signal
  -h, --help                  print node command line options
                              (currently set)
  --huge-max-old-generation-size
                              increase default maximum heap size on
                              machines with 16GB memory or more
  --icu-data-dir=...          set ICU data load path to dir
                              (overrides NODE_ICU_DATA) (note:
                              linked-in ICU data is present)
  --input-type=...            set module type for string input
  --insecure-http-parser      use an insecure HTTP parser that
                              accepts invalid HTTP headers
  --inspect[=[host:]port]     activate inspector on host:port
                              (default: 127.0.0.1:9229)
  --inspect-brk[=[host:]port] activate inspector on host:port and
                              break at start of user script
  --debug-port, --inspect-port=[host:]port
                              set host:port for inspector
  --inspect-publish-uid=...   comma separated list of destinations
                              for inspector uid(default: stderr,http)
  -i, --interactive           always enter the REPL even if stdin
                              does not appear to be a terminal
  --interpreted-frames-native-stack
                              help system profilers to translate
                              JavaScript interpreted frames
  --jitless                   disable runtime allocation of
                              executable memory
  --max-http-header-size=...  set the maximum size of HTTP headers
                              (default: 16384 (16KB))
  --no-addons                 disable loading native addons
  --no-deprecation            silence deprecation warnings
  --no-experimental-repl-await
                              experimental await keyword support in
                              REPL
  --no-extra-info-on-fatal-exception
                              hide extra information on fatal
                              exception that causes exit
  --no-force-async-hooks-checks
                              disable checks for async_hooks
  --no-global-search-paths    disable global module search paths
  --no-warnings               silence all process warnings
  --node-memory-debug         Run with extra debug checks for memory
                              leaks in Node.js itself
  --openssl-config=...        load OpenSSL configuration from the
                              specified file (overrides OPENSSL_CONF)
  --pending-deprecation       emit pending deprecation warnings
  --policy-integrity=...      ensure the security policy contents
                              match the specified integrity
  --preserve-symlinks         preserve symbolic links when resolving
  --preserve-symlinks-main    preserve symbolic links when resolving
                              the main module
  -p, --print [...]           evaluate script and print result
  --prof                      Generate V8 profiler output.
  --prof-process              process V8 profiler output generated
                              using --prof
  --redirect-warnings=...     write warnings to file instead of
                              stderr
  --report-compact            output compact single-line JSON
  --report-directory, --report-dir=...
                              define custom report pathname.
                              (default: current working directory)
  --report-filename=...       define custom report file name.
                              (default:
                              YYYYMMDD.HHMMSS.PID.SEQUENCE#.txt)
  --report-on-fatalerror      generate diagnostic report on fatal
                              (internal) errors
  --report-on-signal          generate diagnostic report upon
                              receiving signals
  --report-signal=...         causes diagnostic report to be produced
                              on provided signal, unsupported in
                              Windows. (default: SIGUSR2)
  --report-uncaught-exception generate diagnostic report on uncaught
                              exceptions
  -r, --require=...           module to preload (option can be
                              repeated)
  --secure-heap=...           total size of the OpenSSL secure heap
  --secure-heap-min=...       minimum allocation size from the
                              OpenSSL secure heap
  --throw-deprecation         throw an exception on deprecations
  --title=...                 the process title to use on startup
  --tls-cipher-list=...       use an alternative default TLS cipher
                              list
  --tls-keylog=...            log TLS decryption keys to named file
                              for traffic analysis
  --tls-max-v1.2              set default TLS maximum to TLSv1.2
                              (default: TLSv1.3)
  --tls-max-v1.3              set default TLS maximum to TLSv1.3
                              (default: TLSv1.3)
  --tls-min-v1.0              set default TLS minimum to TLSv1.0
                              (default: TLSv1.2)
  --tls-min-v1.1              set default TLS minimum to TLSv1.1
                              (default: TLSv1.2)
  --tls-min-v1.2              set default TLS minimum to TLSv1.2
                              (default: TLSv1.2)
  --tls-min-v1.3              set default TLS minimum to TLSv1.3
                              (default: TLSv1.2)
  --trace-atomics-wait        trace Atomics.wait() operations
  --trace-deprecation         show stack traces on deprecations
  --trace-event-categories=...
                              comma separated list of trace event
                              categories to record
  --trace-event-file-pattern=...
                              Template string specifying the filepath
                              for the trace-events data, it supports
                              ${rotation} and ${pid}.
  --trace-exit                show stack trace when an environment
                              exits
  --trace-sigint              enable printing JavaScript stacktrace
                              on SIGINT
  --trace-sync-io             show stack trace when use of sync IO is
                              detected after the first tick
  --trace-tls                 prints TLS packet trace information to
                              stderr
  --trace-uncaught            show stack traces for the `throw`
                              behind uncaught exceptions
  --trace-warnings            show stack traces on process warnings
  --track-heap-objects        track heap object allocations for heap
                              snapshots
  --unhandled-rejections=...  define unhandled rejections behavior.
                              Options are 'strict' (always raise an
                              error), 'throw' (raise an error unless
                              'unhandledRejection' hook is set),
                              'warn' (log a warning), 'none' (silence
                              warnings), 'warn-with-error-code' (log
                              a warning and set exit code 1 unless
                              'unhandledRejection' hook is set).
                              (default: throw)
  --use-bundled-ca            use bundled CA store
  --use-largepages=...        Map the Node.js static code to large
                              pages. Options are 'off' (the default
                              value, meaning do not map), 'on' (map
                              and ignore failure, reporting it to
                              stderr), or 'silent' (map and silently
                              ignore failure)
  --use-openssl-ca            use OpenSSL's default CA store
                              (default)
  --v8-options                print V8 command line options
  --v8-pool-size=...          set V8's thread pool size
  -v, --version               print Node.js version
  --zero-fill-buffers         automatically zero-fill all newly
                              allocated Buffer and SlowBuffer
                              instances

Environment variables:
FORCE_COLOR                 when set to 'true', 1, 2, 3, or an
                            empty string causes NO_COLOR and
                            NODE_DISABLE_COLORS to be ignored.
NO_COLOR                    Alias for NODE_DISABLE_COLORS
NODE_DEBUG                  ','-separated list of core modules that
                            should print debug information
NODE_DEBUG_NATIVE           ','-separated list of C++ core debug
                            categories that should print debug
                            output
NODE_DISABLE_COLORS         set to 1 to disable colors in the REPL
NODE_EXTRA_CA_CERTS         path to additional CA certificates
                            file. Only read once during process
                            startup.
NODE_NO_WARNINGS            set to 1 to silence process warnings
NODE_PATH                   ':'-separated list of directories
                            prefixed to the module search path
NODE_PENDING_DEPRECATION    set to 1 to emit pending deprecation
                            warnings
NODE_PENDING_PIPE_INSTANCES set the number of pending pipe instance
                            handles on Windows
NODE_PRESERVE_SYMLINKS      set to 1 to preserve symbolic links
                            when resolving and caching modules
NODE_REDIRECT_WARNINGS      write warnings to path instead of
                            stderr
NODE_REPL_HISTORY           path to the persistent REPL history
                            file
NODE_TLS_REJECT_UNAUTHORIZED
                            set to 0 to disable TLS certificate
                            validation
NODE_V8_COVERAGE            directory to output v8 coverage JSON to
UV_THREADPOOL_SIZE          sets the number of threads used in
                            libuv's threadpool

Documentation can be found at https://nodejs.org/

See also[edit]

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