Blame view

node_modules/cross-spawn/lib/enoent.js 1.89 KB
aaac7fed   liuqimichale   add
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
  'use strict';
  
  var isWin = process.platform === 'win32';
  var resolveCommand = require('./resolveCommand');
  
  var isNode10 = process.version.indexOf('v0.10.') === 0;
  
  function notFoundError(command, syscall) {
      var err;
  
      err = new Error(syscall + ' ' + command + ' ENOENT');
      err.code = err.errno = 'ENOENT';
      err.syscall = syscall + ' ' + command;
  
      return err;
  }
  
  function hookChildProcess(cp, parsed) {
      var originalEmit;
  
      if (!isWin) {
          return;
      }
  
      originalEmit = cp.emit;
      cp.emit = function (name, arg1) {
          var err;
  
          // If emitting "exit" event and exit code is 1, we need to check if
          // the command exists and emit an "error" instead
          // See: https://github.com/IndigoUnited/node-cross-spawn/issues/16
          if (name === 'exit') {
              err = verifyENOENT(arg1, parsed, 'spawn');
  
              if (err) {
                  return originalEmit.call(cp, 'error', err);
              }
          }
  
          return originalEmit.apply(cp, arguments);
      };
  }
  
  function verifyENOENT(status, parsed) {
      if (isWin && status === 1 && !parsed.file) {
          return notFoundError(parsed.original, 'spawn');
      }
  
      return null;
  }
  
  function verifyENOENTSync(status, parsed) {
      if (isWin && status === 1 && !parsed.file) {
          return notFoundError(parsed.original, 'spawnSync');
      }
  
      // If we are in node 10, then we are using spawn-sync; if it exited
      // with -1 it probably means that the command does not exist
      if (isNode10 && status === -1) {
          parsed.file = isWin ? parsed.file : resolveCommand(parsed.original);
  
          if (!parsed.file) {
              return notFoundError(parsed.original, 'spawnSync');
          }
      }
  
      return null;
  }
  
  module.exports.hookChildProcess = hookChildProcess;
  module.exports.verifyENOENT = verifyENOENT;
  module.exports.verifyENOENTSync = verifyENOENTSync;
  module.exports.notFoundError = notFoundError;