Is something wrong with web-ext?

Using web-ext 3.1.0 w. node v10.16.0 (both freshly reinstalled, former globally).

$ web-ext --version

/usr/local/lib/node_modules/web-ext/node_modules/thenify/index.js:30
  return eval(createWrapper($$__fn__$$.name, true))
              ^
SyntaxError: Unexpected identifier
    at thenify.withCallback (/usr/local/lib/node_modules/web-ext/node_modules/thenify/index.js:30:15)
    at /usr/local/lib/node_modules/web-ext/node_modules/thenify-all/index.js:55:65
    at Array.forEach (<anonymous>)
    at promisifyAll (/usr/local/lib/node_modules/web-ext/node_modules/thenify-all/index.js:53:11)
    at Function.withCallback (/usr/local/lib/node_modules/web-ext/node_modules/thenify-all/index.js:33:10)
    at Object.<anonymous> (/usr/local/lib/node_modules/web-ext/node_modules/mz/dns.js:2:24)
    at Module._compile (internal/modules/cjs/loader.js:776:30)
    at Object.Module._extensions..js (internal/modules/cjs/loader.js:787:10)
    at Module.load (internal/modules/cjs/loader.js:653:32)
    at tryModuleLoad (internal/modules/cjs/loader.js:593:12)

Hey @n8chz! One of our engineers checked this out and was not able to reproduce the issue locally.

Can you file an issue for this? Thanks!