Visual Studio Task Runner "SyntaxError: Use of const in strict mode."

Question

Using Win10 Pro / VS2015 with a 'website' project (not asp.net, basic website)

When attempt to save/reload gulpfile.js I receive the error message (from Task Runner Explorer/output)

SyntaxError: Use of const in strict mode.

In the present case it is choking on 'gulp-changed'

I have looked through the answers and comments available:

• SyntaxError: Use of const in strict mode

• SyntaxError: Use of const in strict mode?

  1. I have updated my version of node to the latest: 6.10.30
  2. I have cleaned the cache (npm cache clean -f)
  3. I have used 'which node' to determine that node is pointing to the installation of the latest install.
  4. "n" does not want to install on Windows (?)

---

In my case the environment path, $(PATH) already include the global install of node but I needed to move it ahead of the $(DevEnvDir) paths so that it would get priority.

(added after correct answer provided, thanks @baao)

Alkahest

What's the output for node -v ? – Aegis

v6.10.3 (1 above) – Alkahest

I think here's your answer: github.com/sindresorhus/gulp-imagemin/issues/… – Aegis

Perfect...please make that an answer, I should like to give you proper credit. – Alkahest

@Aegis Thanks, but your answer is what put me onto the trail of the information I added in, only to show others how to implement what you suggested to me. – Alkahest

Answer 1

VS seems to install (and then use) an old version of node, which is why the task runner is breaking the build.

Go to Tools > Options > Projects and Solutions > External Web Tools and add the correct path to your node version (find the path with which node).

Credits to: https://github.com/sindresorhus/gulp-imagemin/issues/178#issuecomment-218131138

Aegis