eslint-config-standard-with-typescript | An ESLint shareable config for TypeScript that is based on eslint-config-standard and has TypeScript | Code Analyzer library

The problem is that ESLint doesn't know it's a global function. You have two options (at least):

1. Don't use a globals — globals are historically a source of a lot of bugs. Use modules instead. Or,
2. Tell ESLint that it's a global.

There are two parts to #2: In the file where the function is defined, you need to tell ESLint that the function isn't "unused," and in the file where you use it, you need to tell ESLint about it.

See the documentation for details, but basically:

• To tell ESLint a function isn't unused, use a comment described here, e.g.: