1 files changed, 65 insertions, 0 deletions
diff --git a/deps/node/deps/npm/node_modules/npm-lifecycle/lib/spawn.js b/deps/node/deps/npm/node_modules/npm-lifecycle/lib/spawn.js
new file mode 100644
index 00000000..30e5b818
--- /dev/null
+++ b/deps/node/deps/npm/node_modules/npm-lifecycle/lib/spawn.js
@@ -0,0 +1,65 @@
+'use strict'
+
+module.exports = spawn
+
+const _spawn = require('child_process').spawn
+const EventEmitter = require('events').EventEmitter
+
+let progressEnabled
+let running = 0
+
+function startRunning (log) {
+  if (progressEnabled == null) progressEnabled = log.progressEnabled
+  if (progressEnabled) log.disableProgress()
+  ++running
+}
+
+function stopRunning (log) {
+  --running
+  if (progressEnabled && running === 0) log.enableProgress()
+}
+
+function willCmdOutput (stdio) {
+  if (stdio === 'inherit') return true
+  if (!Array.isArray(stdio)) return false
+  for (let fh = 1; fh <= 2; ++fh) {
+    if (stdio[fh] === 'inherit') return true
+    if (stdio[fh] === 1 || stdio[fh] === 2) return true
+  }
+  return false
+}
+
+function spawn (cmd, args, options, log) {
+  const cmdWillOutput = willCmdOutput(options && options.stdio)
+
+  if (cmdWillOutput) startRunning(log)
+  const raw = _spawn(cmd, args, options)
+  const cooked = new EventEmitter()
+
+  raw.on('error', function (er) {
+    if (cmdWillOutput) stopRunning(log)
+    er.file = cmd
+    cooked.emit('error', er)
+  }).on('close', function (code, signal) {
+    if (cmdWillOutput) stopRunning(log)
+    // Create ENOENT error because Node.js v8.0 will not emit
+    // an `error` event if the command could not be found.
+    if (code === 127) {
+      const er = new Error('spawn ENOENT')
+      er.code = 'ENOENT'
+      er.errno = 'ENOENT'
+      er.syscall = 'spawn'
+      er.file = cmd
+      cooked.emit('error', er)
+    } else {
+      cooked.emit('close', code, signal)
+    }
+  })
+
+  cooked.stdin = raw.stdin
+  cooked.stdout = raw.stdout
+  cooked.stderr = raw.stderr
+  cooked.kill = function (sig) { return raw.kill(sig) }
+
+  return cooked
+}