NODE.JS(1)

NAME
node - Server-side JavaScript

SYNOPSIS
node [ -v ] [ --debug | --debug-brk ] [ --v8-options ]
     [ -e command | script.js ] [ arguments ] Execute without arguments to start the REPL.

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.

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)

ENVIRONMENT VARIABLES

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

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

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

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

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