Not able to add the plugin such as the lighthouse in my cypress project

I have a project with the cypress automation. I am trying to add the plugin such as the cypress in my project but after changing my index.js in plugin folder.It shows me the error of

cy.lighthouse() is not a function 

index.js file

const { lighthouse, pa11y, prepareAudit } = require("cypress-audit");
module.exports = (on, config) => {
  // `on` is used to hook into various events Cypress emits
  // `config` is the resolved Cypress config
};

can any one help on this issue. Thanks!

If you take a look at the docs, this should be the full cypress/plugins/index.js

Cypress v9 - cypress/plugins/index.js

const { lighthouse, pa11y, prepareAudit } = require("cypress-audit");

module.exports = (on, config) => {
  on("before:browser:launch", (browser = {}, launchOptions) => {
    prepareAudit(launchOptions);
  });

  on("task", {
    lighthouse: lighthouse(), // calling the function is important
    pa11y: pa11y(), // calling the function is important
  });
};

But your error message "cy.lighthouse() is not a function" is caused by missing line in cypress/support/index.js which you also add

Cypress v9 - cypress/support/index.js

import "cypress-audit/commands";

For latest Cypress

Cypress v10 - cypress.config.js

const { defineConfig } = require('cypress')
const { lighthouse, pa11y, prepareAudit } = require("cypress-audit");

module.exports = defineConfig({
  e2e: {
    baseUrl: 'http://localhost:1234',
    setupNodeEvents(on, config) {

    on("before:browser:launch", (browser = {}, launchOptions) => {
      prepareAudit(launchOptions);
    });

    on("task", {
      lighthouse: lighthouse(), // calling the function is important
      pa11y: pa11y(), // calling the function is important
    }); 
  },
})

Cypress v10 - cypress/support/e2e.js

import "cypress-audit/commands";