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node_modules/spawn-wrap/lib/mungers/sh.js

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+'use strict';
+
+const isWindows = require("is-windows")
+const path = require("path")
+const {debug} = require("../debug")
+const {isNode} = require("../exe-type")
+const whichOrUndefined = require("../which-or-undefined")
+
+/**
+ * Intercepts Node and npm processes spawned through a Linux shell.
+ *
+ * @param workingDir {string} Absolute system-dependent path to the directory containing the shim files.
+ * @param options {import("../munge").InternalSpawnOptions} Original internal spawn options.
+ * @return {import("../munge").InternalSpawnOptions} Updated internal spawn options.
+ */
+function mungeSh(workingDir, options) {
+  const cmdi = options.args.indexOf('-c')
+  if (cmdi === -1) {
+    return {...options} // no -c argument
+  }
+
+  let c = options.args[cmdi + 1]
+  const re = /^\s*((?:[^\= ]*\=[^\=\s]*)*[\s]*)([^\s]+|"[^"]+"|'[^']+')( .*)?$/
+  const match = c.match(re)
+  if (match === null) {
+    return {...options} // not a command invocation.  weird but possible
+  }
+
+  let command = match[2]
+  // strip quotes off the command
+  const quote = command.charAt(0)
+  if ((quote === '"' || quote === '\'') && command.endsWith(quote)) {
+    command = command.slice(1, -1)
+  }
+  const exe = path.basename(command)
+
+  let newArgs = [...options.args];
+  // Remember the original Node command to use it in the shim
+  let originalNode;
+  const workingNode = path.join(workingDir, 'node')
+
+  if (isNode(exe)) {
+    originalNode = command
+    c = `${match[1]}${match[2]} "${workingNode}" ${match[3]}`
+    newArgs[cmdi + 1] = c
+  } else if (exe === 'npm' && !isWindows()) {
+    // XXX this will exhibit weird behavior when using /path/to/npm,
+    // if some other npm is first in the path.
+    const npmPath = whichOrUndefined('npm')
+
+    if (npmPath) {
+      c = c.replace(re, `$1 "${workingNode}" "${npmPath}" $3`)
+      newArgs[cmdi + 1] = c
+      debug('npm munge!', c)
+    }
+  }
+
+  return {...options, args: newArgs, originalNode};
+}
+
+module.exports = mungeSh