1. const http = require("http")
  3. console.log(global.process)
  1. process {
  2.   title: 'node',
  3.   version: 'v8.7.0',
  4.   moduleLoadList: 
  5.    [ 'Binding contextify',
  6.      'Binding natives',
  7.      'Binding config',
  8.      'NativeModule events',
  9.      'Binding async_wrap',
  10.      'Binding icu',
  11.      'NativeModule util',
  12.      'NativeModule internal/errors',
  13.      'NativeModule internal/encoding',
  14.      'NativeModule internal/util',
  15.      'Binding util',
  16.      'Binding constants',
  17.      'Binding buffer',
  18.      'NativeModule buffer',
  19.      'NativeModule internal/buffer',
  20.      'Binding uv',
  21.      'NativeModule internal/process',
  22.      'NativeModule internal/process/warning',
  23.      'NativeModule internal/process/next_tick',
  24.      'NativeModule async_hooks',
  25.      'NativeModule internal/process/promises',
  26.      'NativeModule internal/process/stdio',
  27.      'NativeModule timers',
  28.      'Binding timer_wrap',
  29.      'NativeModule internal/linkedlist',
  30.      'NativeModule assert',
  31.      'NativeModule module',
  32.      'NativeModule internal/module',
  33.      'NativeModule internal/url',
  34.      'NativeModule internal/querystring',
  35.      'NativeModule querystring',
  36.      'Binding url',
  37.      'NativeModule vm',
  38.      'NativeModule fs',
  39.      'NativeModule path',
  40.      'Binding fs',
  41.      'NativeModule stream',
  42.      'NativeModule internal/streams/legacy',
  43.      'NativeModule _stream_readable',
  44.      'NativeModule internal/streams/BufferList',
  45.      'NativeModule internal/streams/destroy',
  46.      'NativeModule _stream_writable',
  47.      'NativeModule _stream_duplex',
  48.      'NativeModule _stream_transform',
  49.      'NativeModule _stream_passthrough',
  50.      'Binding fs_event_wrap',
  51.      'NativeModule internal/fs',
  52.      'NativeModule internal/loader/Loader',
  53.      'NativeModule url',
  54.      'NativeModule internal/loader/ModuleWrap',
  55.      'Binding module_wrap',
  56.      'NativeModule internal/loader/ModuleMap',
  57.      'NativeModule internal/loader/ModuleJob',
  58.      'NativeModule internal/safe_globals',
  59.      'NativeModule internal/loader/resolveRequestUrl',
  60.      'NativeModule internal/loader/search',
  61.      'NativeModule console',
  62.      'Binding tty_wrap',
  63.      'NativeModule tty',
  64.      'NativeModule net',
  65.      'NativeModule internal/net',
  66.      'Binding cares_wrap',
  67.      'Binding tcp_wrap',
  68.      'Binding pipe_wrap',
  69.      'Binding stream_wrap',
  70.      'NativeModule dns',
  71.      'NativeModule readline',
  72.      'NativeModule string_decoder',
  73.      'NativeModule internal/readline',
  74.      'Binding inspector',
  75.      'Binding performance',
  76.      'NativeModule perf_hooks',
  77.      'NativeModule internal/inspector_async_hook',
  78.      'NativeModule http',
  79.      'NativeModule _http_agent',
  80.      'NativeModule _http_client',
  81.      'Binding http_parser',
  82.      'NativeModule _http_common',
  83.      'NativeModule internal/freelist',
  84.      'NativeModule internal/http',
  85.      'NativeModule _http_incoming',
  86.      'NativeModule _http_outgoing',
  87.      'NativeModule _http_server' ],
  88.   versions: { http_parser: '2.7.0',
  89.   node: '8.7.0',
  90.   v8: '6.1.534.42',
  91.   uv: '1.15.0',
  92.   zlib: '1.2.11',
  93.   ares: '1.10.1-DEV',
  94.   modules: '57',
  95.   nghttp2: '1.25.0',
  96.   openssl: '1.0.2l',
  97.   icu: '59.1',
  98.   unicode: '9.0',
  99.   cldr: '31.0.1',
  100.   tz: '2017b' },
  101.   arch: 'x64',
  102.   platform: 'darwin',
  103.   release: 
  104.    { name: 'node',
  105.      sourceUrl: 'https://nodejs.org/download/release/v8.7.0/node-v8.7.0.tar.gz',
  106.      headersUrl: 'https://nodejs.org/download/release/v8.7.0/node-v8.7.0-headers.tar.gz' },
  107.   argv: 
  108.    [ '/usr/local/bin/node',
  109.      '/Users/apple/Desktop/test/comjs/index.js' ],
  110.   execArgv: [],
  111.   env: 
  112.    { NVM_RC_VERSION: '',
  113.      TERM_PROGRAM: 'Apple_Terminal',
  114.      NVM_CD_FLAGS: '',
  115.      SHELL: '/bin/bash',
  116.      TERM: 'xterm-256color',
  117.      TMPDIR: '/var/folders/vm/n4myfnyx0gxc0pt2vgqgqhzc0000gn/T/',
  118.      Apple_PubSub_Socket_Render: '/private/tmp/com.apple.launchd.ch6yYRuIxm/Render',
  119.      TERM_PROGRAM_VERSION: '388.1.1',
  120.      OLDPWD: '/Users/apple/Desktop/test',
  121.      TERM_SESSION_ID: '4F4E6FB2-133A-45E6-8F26-EBFF7A2D5695',
  122.      NVM_DIR: '/Users/apple/.nvm',
  123.      USER: 'apple',
  124.      SSH_AUTH_SOCK: '/private/tmp/com.apple.launchd.MWhBvOCKwO/Listeners',
  125.      __CF_USER_TEXT_ENCODING: '0x1F5:0x0:0x0',
  126.      PATH: '/Users/apple/Desktop/bts:/Users/apple/Downloads/geckodriver:/Users/apple/anaconda/bin:/usr/local/bin:/usr/bin:/bin:/usr/sbin:/sbin:/opt/X11/bin:/usr/local/share/dotnet:/usr/local/go/bin:/Library/Frameworks/Mono.framework/Versions/Current/Commands:/Applications/Wireshark.app/Contents/MacOS:/Users/apple/Downloads/apache-maven-3.5.3/bin',
  127.      PWD: '/Users/apple/Desktop/test/comjs',
  128.      JAVA_HOME: '/Library/Java/JavaVirtualMachines/jdk-9.0.1.jdk/Contents/Home',
  129.      XPC_FLAGS: '0x0',
  130.      XPC_SERVICE_NAME: '0',
  131.      M2_HOME: '/Users/apple/Downloads/apache-maven-3.5.3',
  132.      SHLVL: '1',
  133.      HOME: '/Users/apple',
  134.      LOGNAME: 'apple',
  135.      LC_CTYPE: 'UTF-8',
  136.      GOPATH: '/Users/apple/go/src/calcproj',
  137.      DISPLAY: '/private/tmp/com.apple.launchd.mQOTg3abGU/org.macosforge.xquartz:0',
  138.      SECURITYSESSIONID: '186a6',
  139.      _: '/usr/local/bin/node' },
  140.   pid: 71393,
  141.   features: 
  142.    { debug: false,
  143.      uv: true,
  144.      ipv6: true,
  145.      tls_npn: true,
  146.      tls_alpn: true,
  147.      tls_sni: true,
  148.      tls_ocsp: true,
  149.      tls: true },
  150.   _needImmediateCallback: false,
  151.   execPath: '/usr/local/bin/node',
  152.   debugPort: 9229,
  153.   _startProfilerIdleNotifier: [Function: _startProfilerIdleNotifier],
  154.   _stopProfilerIdleNotifier: [Function: _stopProfilerIdleNotifier],
  155.   _getActiveRequests: [Function: _getActiveRequests],
  156.   _getActiveHandles: [Function: _getActiveHandles],
  157.   reallyExit: [Function: reallyExit],
  158.   abort: [Function: abort],
  159.   chdir: [Function: chdir],
  160.   cwd: [Function: cwd],
  161.   umask: [Function: umask],
  162.   getuid: [Function: getuid],
  163.   geteuid: [Function: geteuid],
  164.   setuid: [Function: setuid],
  165.   seteuid: [Function: seteuid],
  166.   setgid: [Function: setgid],
  167.   setegid: [Function: setegid],
  168.   getgid: [Function: getgid],
  169.   getegid: [Function: getegid],
  170.   getgroups: [Function: getgroups],
  171.   setgroups: [Function: setgroups],
  172.   initgroups: [Function: initgroups],
  173.   _kill: [Function: _kill],
  174.   _debugProcess: [Function: _debugProcess],
  175.   _debugPause: [Function: _debugPause],
  176.   _debugEnd: [Function: _debugEnd],
  177.   hrtime: [Function: hrtime],
  178.   cpuUsage: [Function: cpuUsage],
  179.   dlopen: [Function: dlopen],
  180.   uptime: [Function: uptime],
  181.   memoryUsage: [Function: memoryUsage],
  182.   binding: [Function: binding],
  183.   _linkedBinding: [Function: _linkedBinding],
  184.   _setupDomainUse: [Function: _setupDomainUse],
  185.   _events: 
  186.    { warning: [Function],
  187.      SIGWINCH: [ [Function], [Function] ],
  188.      newListener: [Function],
  189.      removeListener: [Function] },
  190.   _rawDebug: [Function],
  191.   _eventsCount: 4,
  192.   domain: null,
  193.   _maxListeners: undefined,
  194.   _fatalException: [Function],
  195.   _exiting: false,
  196.   assert: [Function],
  197.   config: 
  198.    { target_defaults: 
  199.       { cflags: [],
  200.         default_configuration: 'Release',
  201.         defines: [],
  202.         include_dirs: [],
  203.         libraries: [] },
  204.      variables: 
  205.       { asan: 0,
  206.         coverage: false,
  207.         debug_devtools: 'node',
  208.         debug_http2: false,
  209.         debug_nghttp2: false,
  210.         force_dynamic_crt: 0,
  211.         host_arch: 'x64',
  212.         icu_data_file: 'icudt59l.dat',
  213.         icu_data_in: '../../deps/icu-small/source/data/in/icudt59l.dat',
  214.         icu_endianness: 'l',
  215.         icu_gyp_path: 'tools/icu/icu-generic.gyp',
  216.         icu_locales: 'en,root',
  217.         icu_path: 'deps/icu-small',
  218.         icu_small: true,
  219.         icu_ver_major: '59',
  220.         llvm_version: 0,
  221.         node_byteorder: 'little',
  222.         node_enable_d8: false,
  223.         node_enable_v8_vtunejit: false,
  224.         node_install_npm: true,
  225.         node_module_version: 57,
  226.         node_no_browser_globals: false,
  227.         node_prefix: '/usr/local',
  228.         node_release_urlbase: 'https://nodejs.org/download/release/',
  229.         node_shared: false,
  230.         node_shared_cares: false,
  231.         node_shared_http_parser: false,
  232.         node_shared_libuv: false,
  233.         node_shared_openssl: false,
  234.         node_shared_zlib: false,
  235.         node_tag: '',
  236.         node_use_bundled_v8: true,
  237.         node_use_dtrace: true,
  238.         node_use_etw: false,
  239.         node_use_lttng: false,
  240.         node_use_openssl: true,
  241.         node_use_perfctr: false,
  242.         node_use_v8_platform: true,
  243.         node_without_node_options: false,
  244.         openssl_fips: '',
  245.         openssl_no_asm: 0,
  246.         shlib_suffix: '57.dylib',
  247.         target_arch: 'x64',
  248.         uv_parent_path: '/deps/uv/',
  249.         uv_use_dtrace: true,
  250.         v8_enable_gdbjit: 0,
  251.         v8_enable_i18n_support: 1,
  252.         v8_enable_inspector: 1,
  253.         v8_no_strict_aliasing: 1,
  254.         v8_optimized_debug: 0,
  255.         v8_promise_internal_field_count: 1,
  256.         v8_random_seed: 0,
  257.         v8_trace_maps: 0,
  258.         v8_use_snapshot: true,
  259.         want_separate_host_toolset: 0,
  260.         xcode_version: '7.0' } },
  261.   emitWarning: [Function],
  262.   nextTick: [Function: nextTick],
  263.   _tickCallback: [Function: _tickCallback],
  264.   _tickDomainCallback: [Function: _tickDomainCallback],
  265.   stdout: [Getter],
  266.   stderr: [Getter],
  267.   stdin: [Getter],
  268.   openStdin: [Function],
  269.   exit: [Function],
  270.   kill: [Function],
  271.   argv0: 'node',
  272.   mainModule: 
  273.    Module {
  274.      id: '.',
  275.      exports: {},
  276.      parent: null,
  277.      filename: '/Users/apple/Desktop/test/comjs/index.js',
  278.      loaded: false,
  279.      children: [],
  280.      paths: 
  281.       [ '/Users/apple/Desktop/test/comjs/node_modules',
  282.         '/Users/apple/Desktop/test/node_modules',
  283.         '/Users/apple/Desktop/node_modules',
  284.         '/Users/apple/node_modules',
  285.         '/Users/node_modules',
  286.         '/node_modules' ] } }

node环境中，放弃了将变量放在window 变量中的做法

  1. const http = require("http")
  3. var a = "asdf"
  5. console.log(global.process === process)  //true
  6. console.log(global.a === a)              //false
  1. const {argv,argv0,execArgv,execPath} = process;
  3. console.log("argv:")
  4. argv.forEach(item =>{
  5.     console.log(item)
  6. })
  8. console.log("argv0: ",argv0)
  10. console.log("execArgv: ",execArgv)
  12. console.log("execPath: ",execPath)

$node --inspect index.js test -g:

  1. argv:
  2. /usr/local/bin/node
  3. /Users/apple/Desktop/test/comjs/index.js
  4. test
  5. -g
  6. argv0:  node
  7. execArgv:  [ '--inspect' ]
  8. execPath:  /usr/local/bin/node

setImmediate 与 proces.nextTick

  1. setImmediate(() => {
  2.     console.log("it is setImmediate")
  3. })
  5. process.nextTick(()=>{
  6.     console.log('it is nextTick')
  7. })

proces.nextTick会把回调函数放在消息队列的最前端