Tern plugin to work with babel-plugin-module-resolver

.tern-project

{
  "libs": [],
  "loadEagerly": [],
  "plugins": {
    "node": {},
    "es_modules": {},
    "module-resolver": {
      "cwd": "packagejson",
      "alias": {
        "my-alias1": "./path/to/my/module1",
        "my-alias2": "./path/to/my/module2"
      }
    }
  }
}

module-resolver.js

```javascript
// This is a plugin for Tern which helps it resolve aliased modules when using
// babel-plugin-module-resolver.
const path = require('path')
const resolve = require('babel-plugin-module-resolver/lib/resolvePath').default

function initialize (ternDir) {
  const tern = require(ternDir)

  tern.registerPlugin('module-resolver', function (server, options) {
    // do not use "cwd" if set because tern already expects an path relative
    // .tern-config.js, which should be in the project root.
    const opts = {
      alias: options.alias
    }
    server.mod.modules.resolvers.push(function _resolve (name, parentFile) {
      let str = resolve(name, parentFile, opts)
      if (str) {
        str = path.normalize(path.join(path.dirname(parentFile), str))
      }
      return str
    })
  })
}

module.exports = { initialize }

The only thing left is to figure out how to use the same configuration file as babel so there is no need for duplicate definitions of aliases.