Is there a way to configure Tern to use plugins and type definitions on some files only?

[downwater]

Disclaimer: I also posted this question on StackOverflow.

I set up a web project with a static HTML file and some vanilla JavaScript files. I'm using Jest to perform unit tests on them.

I'm using Tern with Emacs to have some completions.

I want to get a conditional applying of type definitions and plugins on path patterns:

• node plugin to be active only in unit test files handled by Jest, matching .*.test.js, to get variables like process and __dirname.
• browser type definitions applied only in JavaScript files not matching .*.test.js to have in web scripts some definitions like the Document interface of the DOM API.

How can I achieve that? Is there a better approach?

Here is my .tern-project so far:

{
  "libs": [
    "ecmascript",
    "browser"
  ],
  "plugins": {
    "es_modules": {},
    "node": {}
  }
}