--- /dev/null
+'use strict';
+
+const path = require('path');
+const which = require('which');
+const pathKey = require('path-key')();
+
+function resolveCommandAttempt(parsed, withoutPathExt) {
+ const cwd = process.cwd();
+ const hasCustomCwd = parsed.options.cwd != null;
+
+ // If a custom `cwd` was specified, we need to change the process cwd
+ // because `which` will do stat calls but does not support a custom cwd
+ if (hasCustomCwd) {
+ try {
+ process.chdir(parsed.options.cwd);
+ } catch (err) {
+ /* Empty */
+ }
+ }
+
+ let resolved;
+
+ try {
+ resolved = which.sync(parsed.command, {
+ path: (parsed.options.env || process.env)[pathKey],
+ pathExt: withoutPathExt ? path.delimiter : undefined,
+ });
+ } catch (e) {
+ /* Empty */
+ } finally {
+ process.chdir(cwd);
+ }
+
+ // If we successfully resolved, ensure that an absolute path is returned
+ // Note that when a custom `cwd` was used, we need to resolve to an absolute path based on it
+ if (resolved) {
+ resolved = path.resolve(hasCustomCwd ? parsed.options.cwd : '', resolved);
+ }
+
+ return resolved;
+}
+
+function resolveCommand(parsed) {
+ return resolveCommandAttempt(parsed) || resolveCommandAttempt(parsed, true);
+}
+
+module.exports = resolveCommand;