Tesseract.js spread syntax (ellipsis) error "Unexpected token ..."

Question

I am trying to use the tesseract.js package in a node app. I am starting with a basic example from the documentation:

Tesseract = require("tesseract.js");

Tesseract.recognize(
  'https://tesseract.projectnaptha.com/img/eng_bw.png',
  'eng',
  { logger: m => console.log(m) }
).then(({ data: { text } }) => {
  console.log(text);
})

However, running this app (in Heroku) yields the following error:

  /app/node_modules/tesseract.js/src/index.js:24
     ...Tesseract,
    ^^^
    SyntaxError: Unexpected token ...
    at createScript (vm.js:56:10)

I am trying to resolve this error. There is a "..." in this index.js file in the package code - any ideas why this would be causing a problem? Not sure if I should submit an "issue" about it.

Answer 1

Duh, the problem seems to have been that my Heroku app was using a very outdated version of node, which I found by running

heroku run bash
node -v

I have updated it and everything works fine.