Cannot find module 'intl'

Provide the steps to reproduce

1. Run LH on cypress

import lighthouse from 'lighthouse';
describe('My First Test', function() {
  it('Does not do much!', function() {
    expect(true).to.equal(true);
  });
});

repo with example: https://github.com/bote795/cypress-test-tiny

npm run cypress:run

What is the current behavior?

Doesn’t really get past the first line Error: Cannot find module ‘intl’ from ‘/Users/nicolasbotello/Documents/workspace/code/rmc/node_modules/lighthouse/lighthouse-core/lib/i18n’

What is the expected behavior?

file to run successfully don’t get any errors.

Environment Information

• Affected Channels:
• Lighthouse version: 5.1.0
• Node.js version:v10.15.0
• Operating System: Macos

Related issues Not sure if this is a lighthouse or cypress issue?

[bote795]

so I added bufferutil, intl, utf-8-validate Then I got the following error

Uncaught TypeError: require.resolve is not a function

This error originated from your test code, not from Cypress.

When Cypress detects uncaught errors originating from your test code it will automatically fail the current test.

Cypress could not associate this error to any specific test.

We dynamically generated a new test to display this failure.

will follow up with the cypress team. Thanks for y’alls help!

[patrickhulce]

This sounds like a cypress issue. All of these require statements are guarded by try/catch and in normal node execution should pass right on through the optional requires just fine.

That being said, we should probably be moving our intl dependency to dependencies though as @connorjclark points out. Right now most node consumers probably don’t know they would need to install this package manually for complete i18n support.