node/doc/node.1

.TH NODE.JS "1" "2010" "" ""


.SH "NAME"
node \- Server-side JavaScript

.SH SYNOPSIS


.B node
[
.B \-v
]
[
.B \-\-debug
|
.B \-\-debug-brk
]
[
.B \-\-v8-options
]
.br
     [
.B \-e
.I command
|
.I script.js
]
[
.I arguments
]

Execute without arguments to start the REPL.


.SH DESCRIPTION

Node is a set of libraries for javascript which allows
it to be used outside of the browser. It is primarily
focused on creating simple, easy to build network clients
and servers.


.SH OPTIONS

  -v, --version          print node's version

  -e, --eval script      evaluate script

  -p, --print            print result of --eval

  -i, --interactive      always enter the REPL even if stdin
                         does not appear to be a terminal

  --no-deprecation       silence deprecation warnings

  --trace-deprecation    show stack traces on deprecations

  --throw-deprecation    throw errors on deprecations

  --v8-options           print v8 command line options

  --max-stack-size=val   set max v8 stack size (bytes)


.SH ENVIRONMENT VARIABLES

.IP NODE_PATH
\':\'\-separated list of directories prefixed to the module search path.

.IP NODE_MODULE_CONTEXTS
If set to 1 then modules will load in their own global contexts.

.IP NODE_DISABLE_COLORS
If set to 1 then colors will not be used in the REPL.

.SH V8 OPTIONS

  --use_strict (enforce strict mode)
        type: bool  default: false
  --es5_readonly (activate correct semantics for inheriting readonliness)
        type: bool  default: false
  --es52_globals (activate new semantics for global var declarations)
        type: bool  default: false
  --harmony_typeof (enable harmony semantics for typeof)
        type: bool  default: false
  --harmony_scoping (enable harmony block scoping)
        type: bool  default: false
  --harmony_modules (enable harmony modules (implies block scoping))
        type: bool  default: false
  --harmony_proxies (enable harmony proxies)
        type: bool  default: false
  --harmony_collections (enable harmony collections (sets, maps, and weak maps))
        type: bool  default: false
  --harmony (enable all harmony features (except typeof))
        type: bool  default: false
  --packed_arrays (optimizes arrays that have no holes)
        type: bool  default: false
  --smi_only_arrays (tracks arrays with only smi values)
        type: bool  default: true
  --clever_optimizations (Optimize object size, Array shift, DOM strings and string +)
        type: bool  default: true
  --unbox_double_arrays (automatically unbox arrays of doubles)
        type: bool  default: true
  --string_slices (use string slices)
        type: bool  default: true
  --crankshaft (use crankshaft)
        type: bool  default: true
  --hydrogen_filter (optimization filter)
        type: string  default: 
  --use_range (use hydrogen range analysis)
        type: bool  default: true
  --eliminate_dead_phis (eliminate dead phis)
        type: bool  default: true
  --use_gvn (use hydrogen global value numbering)
        type: bool  default: true
  --use_canonicalizing (use hydrogen instruction canonicalizing)
        type: bool  default: true
  --use_inlining (use function inlining)
        type: bool  default: true
  --max_inlined_source_size (maximum source size in bytes considered for a single inlining)
        type: int  default: 600
  --max_inlined_nodes (maximum number of AST nodes considered for a single inlining)
        type: int  default: 196
  --max_inlined_nodes_cumulative (maximum cumulative number of AST nodes considered for inlining)
        type: int  default: 196
  --loop_invariant_code_motion (loop invariant code motion)
        type: bool  default: true
  --collect_megamorphic_maps_from_stub_cache (crankshaft harvests type feedback from stub cache)
        type: bool  default: true
  --hydrogen_stats (print statistics for hydrogen)
        type: bool  default: false
  --trace_hydrogen (trace generated hydrogen to file)
        type: bool  default: false
  --trace_phase (trace generated IR for specified phases)
        type: string  default: Z
  --trace_inlining (trace inlining decisions)
        type: bool  default: false
  --trace_alloc (trace register allocator)
        type: bool  default: false
  --trace_all_uses (trace all use positions)
        type: bool  default: false
  --trace_range (trace range analysis)
        type: bool  default: false
  --trace_gvn (trace global value numbering)
        type: bool  default: false
  --trace_representation (trace representation types)
        type: bool  default: false
  --stress_pointer_maps (pointer map for every instruction)
        type: bool  default: false
  --stress_environments (environment for every instruction)
        type: bool  default: false
  --deopt_every_n_times (deoptimize every n times a deopt point is passed)
        type: int  default: 0
  --trap_on_deopt (put a break point before deoptimizing)
        type: bool  default: false
  --deoptimize_uncommon_cases (deoptimize uncommon cases)
        type: bool  default: true
  --polymorphic_inlining (polymorphic inlining)
        type: bool  default: true
  --use_osr (use on-stack replacement)
        type: bool  default: true
  --array_bounds_checks_elimination (perform array bounds checks elimination)
        type: bool  default: false
  --array_index_dehoisting (perform array index dehoisting)
        type: bool  default: false
  --trace_osr (trace on-stack replacement)
        type: bool  default: false
  --stress_runs (number of stress runs)
        type: int  default: 0
  --optimize_closures (optimize closures)
        type: bool  default: true
  --inline_construct (inline constructor calls)
        type: bool  default: true
  --inline_arguments (inline functions with arguments object)
        type: bool  default: true
  --loop_weight (loop weight for representation inference)
        type: int  default: 1
  --optimize_for_in (optimize functions containing for-in loops)
        type: bool  default: true
  --experimental_profiler (enable all profiler experiments)
        type: bool  default: true
  --watch_ic_patching (profiler considers IC stability)
        type: bool  default: false
  --frame_count (number of stack frames inspected by the profiler)
        type: int  default: 1
  --self_optimization (primitive functions trigger their own optimization)
        type: bool  default: false
  --direct_self_opt (call recompile stub directly when self-optimizing)
        type: bool  default: false
  --retry_self_opt (re-try self-optimization if it failed)
        type: bool  default: false
  --count_based_interrupts (trigger profiler ticks based on counting instead of timing)
        type: bool  default: false
  --interrupt_at_exit (insert an interrupt check at function exit)
        type: bool  default: false
  --weighted_back_edges (weight back edges by jump distance for interrupt triggering)
        type: bool  default: false
  --interrupt_budget (execution budget before interrupt is triggered)
        type: int  default: 5900
  --type_info_threshold (percentage of ICs that must have type info to allow optimization)
        type: int  default: 15
  --self_opt_count (call count before self-optimization)
        type: int  default: 130
  --trace_opt_verbose (extra verbose compilation tracing)
        type: bool  default: false
  --debug_code (generate extra code (assertions) for debugging)
        type: bool  default: false
  --code_comments (emit comments in code disassembly)
        type: bool  default: false
  --enable_sse2 (enable use of SSE2 instructions if available)
        type: bool  default: true
  --enable_sse3 (enable use of SSE3 instructions if available)
        type: bool  default: true
  --enable_sse4_1 (enable use of SSE4.1 instructions if available)
        type: bool  default: true
  --enable_cmov (enable use of CMOV instruction if available)
        type: bool  default: true
  --enable_rdtsc (enable use of RDTSC instruction if available)
        type: bool  default: true
  --enable_sahf (enable use of SAHF instruction if available (X64 only))
        type: bool  default: true
  --enable_vfp3 (enable use of VFP3 instructions if available - this implies enabling ARMv7 instructions (ARM only))
        type: bool  default: true
  --enable_armv7 (enable use of ARMv7 instructions if available (ARM only))
        type: bool  default: true
  --enable_fpu (enable use of MIPS FPU instructions if available (MIPS only))
        type: bool  default: true
  --expose_natives_as (expose natives in global object)
        type: string  default: NULL
  --expose_debug_as (expose debug in global object)
        type: string  default: NULL
  --expose_gc (expose gc extension)
        type: bool  default: false
  --expose_externalize_string (expose externalize string extension)
        type: bool  default: false
  --stack_trace_limit (number of stack frames to capture)
        type: int  default: 10
  --builtins_in_stack_traces (show built-in functions in stack traces)
        type: bool  default: false
  --disable_native_files (disable builtin natives files)
        type: bool  default: false
  --inline_new (use fast inline allocation)
        type: bool  default: true
  --stack_trace_on_abort (print a stack trace if an assertion failure occurs)
        type: bool  default: true
  --trace (trace function calls)
        type: bool  default: false
  --mask_constants_with_cookie (use random jit cookie to mask large constants)
        type: bool  default: true
  --lazy (use lazy compilation)
        type: bool  default: true
  --trace_opt (trace lazy optimization)
        type: bool  default: false
  --trace_opt_stats (trace lazy optimization statistics)
        type: bool  default: false
  --opt (use adaptive optimizations)
        type: bool  default: true
  --always_opt (always try to optimize functions)
        type: bool  default: false
  --prepare_always_opt (prepare for turning on always opt)
        type: bool  default: false
  --trace_deopt (trace deoptimization)
        type: bool  default: false
  --min_preparse_length (minimum length for automatic enable preparsing)
        type: int  default: 1024
  --always_full_compiler (try to use the dedicated run-once backend for all code)
        type: bool  default: false
  --trace_bailout (print reasons for falling back to using the classic V8 backend)
        type: bool  default: false
  --compilation_cache (enable compilation cache)
        type: bool  default: true
  --cache_prototype_transitions (cache prototype transitions)
        type: bool  default: true
  --trace_debug_json (trace debugging JSON request/response)
        type: bool  default: false
  --debugger_auto_break (automatically set the debug break flag when debugger commands are in the queue)
        type: bool  default: true
  --enable_liveedit (enable liveedit experimental feature)
        type: bool  default: true
  --break_on_abort (always cause a debug break before aborting)
        type: bool  default: true
  --stack_size (default size of stack region v8 is allowed to use (in kBytes))
        type: int  default: 984
  --max_stack_trace_source_length (maximum length of function source code printed in a stack trace.)
        type: int  default: 300
  --always_inline_smi_code (always inline smi code in non-opt code)
        type: bool  default: false
  --max_new_space_size (max size of the new generation (in kBytes))
        type: int  default: 0
  --max_old_space_size (max size of the old generation (in Mbytes))
        type: int  default: 0
  --max_executable_size (max size of executable memory (in Mbytes))
        type: int  default: 0
  --gc_global (always perform global GCs)
        type: bool  default: false
  --gc_interval (garbage collect after <n> allocations)
        type: int  default: -1
  --trace_gc (print one trace line following each garbage collection)
        type: bool  default: false
  --trace_gc_nvp (print one detailed trace line in name=value format after each garbage collection)
        type: bool  default: false
  --print_cumulative_gc_stat (print cumulative GC statistics in name=value format on exit)
        type: bool  default: false
  --trace_gc_verbose (print more details following each garbage collection)
        type: bool  default: false
  --trace_fragmentation (report fragmentation for old pointer and data pages)
        type: bool  default: false
  --collect_maps (garbage collect maps from which no objects can be reached)
        type: bool  default: true
  --flush_code (flush code that we expect not to use again before full gc)
        type: bool  default: true
  --incremental_marking (use incremental marking)
        type: bool  default: true
  --incremental_marking_steps (do incremental marking steps)
        type: bool  default: true
  --trace_incremental_marking (trace progress of the incremental marking)
        type: bool  default: false
  --use_idle_notification (Use idle notification to reduce memory footprint.)
        type: bool  default: true
  --send_idle_notification (Send idle notifcation between stress runs.)
        type: bool  default: false
  --use_ic (use inline caching)
        type: bool  default: true
  --native_code_counters (generate extra code for manipulating stats counters)
        type: bool  default: false
  --always_compact (Perform compaction on every full GC)
        type: bool  default: false
  --lazy_sweeping (Use lazy sweeping for old pointer and data spaces)
        type: bool  default: true
  --never_compact (Never perform compaction on full GC - testing only)
        type: bool  default: false
  --compact_code_space (Compact code space on full non-incremental collections)
        type: bool  default: true
  --cleanup_code_caches_at_gc (Flush inline caches prior to mark compact collection and flush code caches in maps during mark compact cycle.)
        type: bool  default: true
  --random_seed (Default seed for initializing random generator (0, the default, means to use system random).)
        type: int  default: 0
  --use_verbose_printer (allows verbose printing)
        type: bool  default: true
  --allow_natives_syntax (allow natives syntax)
        type: bool  default: false
  --trace_sim (Trace simulator execution)
        type: bool  default: false
  --check_icache (Check icache flushes in ARM and MIPS simulator)
        type: bool  default: false
  --stop_sim_at (Simulator stop after x number of instructions)
        type: int  default: 0
  --sim_stack_alignment (Stack alingment in bytes in simulator (4 or 8, 8 is default))
        type: int  default: 8
  --trace_exception (print stack trace when throwing exceptions)
        type: bool  default: false
  --preallocate_message_memory (preallocate some memory to build stack traces.)
        type: bool  default: false
  --randomize_hashes (randomize hashes to avoid predictable hash collisions (with snapshots this option cannot override the baked-in seed))
        type: bool  default: true
  --hash_seed (Fixed seed to use to hash property keys (0 means random)(with snapshots this option cannot override the baked-in seed))
        type: int  default: 0
  --preemption (activate a 100ms timer that switches between V8 threads)
        type: bool  default: false
  --regexp_optimization (generate optimized regexp code)
        type: bool  default: true
  --testing_bool_flag (testing_bool_flag)
        type: bool  default: true
  --testing_int_flag (testing_int_flag)
        type: int  default: 13
  --testing_float_flag (float-flag)
        type: float  default: 2.500000
  --testing_string_flag (string-flag)
        type: string  default: Hello, world!
  --testing_prng_seed (Seed used for threading test randomness)
        type: int  default: 42
  --testing_serialization_file (file in which to serialize heap)
        type: string  default: /tmp/serdes
  --help (Print usage message, including flags, on console)
        type: bool  default: true
  --dump_counters (Dump counters on exit)
        type: bool  default: false
  --debugger (Enable JavaScript debugger)
        type: bool  default: false
  --remote_debugger (Connect JavaScript debugger to the debugger agent in another process)
        type: bool  default: false
  --debugger_agent (Enable debugger agent)
        type: bool  default: false
  --debugger_port (Port to use for remote debugging)
        type: int  default: 5858
  --map_counters (Map counters to a file)
        type: string  default: 
  --js_arguments (Pass all remaining arguments to the script. Alias for "--".)
        type: arguments  default: 
  --debug_compile_events (Enable debugger compile events)
        type: bool  default: true
  --debug_script_collected_events (Enable debugger script collected events)
        type: bool  default: true
  --gdbjit (enable GDBJIT interface (disables compacting GC))
        type: bool  default: false
  --gdbjit_full (enable GDBJIT interface for all code objects)
        type: bool  default: false
  --gdbjit_dump (dump elf objects with debug info to disk)
        type: bool  default: false
  --gdbjit_dump_filter (dump only objects containing this substring)
        type: string  default: 
  --force_marking_deque_overflows (force overflows of marking deque by reducing it's size to 64 words)
        type: bool  default: false
  --stress_compaction (stress the GC compactor to flush out bugs (implies --force_marking_deque_overflows))
        type: bool  default: false
  --log (Minimal logging (no API, code, GC, suspect, or handles samples).)
        type: bool  default: false
  --log_all (Log all events to the log file.)
        type: bool  default: false
  --log_runtime (Activate runtime system %Log call.)
        type: bool  default: false
  --log_api (Log API events to the log file.)
        type: bool  default: false
  --log_code (Log code events to the log file without profiling.)
        type: bool  default: false
  --log_gc (Log heap samples on garbage collection for the hp2ps tool.)
        type: bool  default: false
  --log_handles (Log global handle events.)
        type: bool  default: false
  --log_snapshot_positions (log positions of (de)serialized objects in the snapshot.)
        type: bool  default: false
  --log_suspect (Log suspect operations.)
        type: bool  default: false
  --prof (Log statistical profiling information (implies --log-code).)
        type: bool  default: false
  --prof_auto (Used with --prof, starts profiling automatically)
        type: bool  default: true
  --prof_lazy (Used with --prof, only does sampling and logging when profiler is active (implies --noprof_auto).)
        type: bool  default: false
  --prof_browser_mode (Used with --prof, turns on browser-compatible mode for profiling.)
        type: bool  default: true
  --log_regexp (Log regular expression execution.)
        type: bool  default: false
  --sliding_state_window (Update sliding state window counters.)
        type: bool  default: false
  --logfile (Specify the name of the log file.)
        type: string  default: v8.log
  --ll_prof (Enable low-level linux profiler.)
        type: bool  default: false

.SH RESOURCES AND DOCUMENTATION

See the website for documentation http://nodejs.org/

Mailing list: http://groups.google.com/group/nodejs

IRC: irc.freenode.net #node.js