ReferenceError: Cypress/Cy is not defined

[johnsonkandul-github]

I have created new JS file called as email.js under cypress/support directory along side command.js, e2e.js, index.js files.
Cypress version is latest 12.7.0.

I am trying to use cy.task(it is registered in cypress.config.js setupnodes events) or Cypress.config('baseURL') but getting below errors

Sample Errors :

ReferenceError: Cypress is not defined
List item TypeError: Cypress.config is not a function
ReferenceError: Sendgrid_API_KEY is not defined

I have tried to import cypress using const Cypress = require("cypress"); however no luck.
I am wondering why cypress() cy() works fines in js files under e2e and support folders without importing cypress

I have also tried to create new .eslintrc.json file and added below code but still no luck

{
"plugins": [
"cypress"
]
}