node --help
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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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