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

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