How to access secrets in Javascript GitHub actions?

I am developing a reusable workflow using Javascript actions by following this tutorial. My action.yml looks like this.

name: "Test"
description: "Reusable workflow"
inputs:
  input-one:
    required: false
    type: string

runs:
  using: 'node16'
  main: 'dist/index.js'

But my question is how to access the secrets in dist/index.js?. Please note that I don't want the user to supply the secret as input, I would like to store the secret in my reusable workflow repository and use it whenever it's needed.

I tried to change the action.yml with env(So that I can use node process.env API to get the secret) but it's failing with an error saying that Unexpected value 'env'.

name: "Test"
description: "Reusable workflow"
inputs:
  input-one:
    required: false
    type: string

runs:
  using: 'node16'
  main: 'dist/index.js'
  env: 
    DUMMY_VAL: $

from How to access secrets in Javascript GitHub actions?