Answer

Fixing 'self_signed_cert_in_chain' Error in '@playwright/test'

If you're encountering a 'self_signed_cert_in_chain' error with your '@playwright/test' package, here's how you can tackle it:

Set Custom Root Certificates

If your proxy's requests are intercepted with an untrusted certificate authority (CA), causing the error, you need to set your custom root certificates. Use the NODE_EXTRA_CA_CERTS environment variable before installing the browsers. Here's how you do it in Bash:

export NODE_EXTRA_CA_CERTS="/path/to/cert.pem"

Increase Connection Timeout

Slow network? Increase the connection timeout in milliseconds with the PLAYWRIGHT_DOWNLOAD_CONNECTION_TIMEOUT environment variable. Here's an example:

PLAYWRIGHT_DOWNLOAD_CONNECTION_TIMEOUT=120000 npx playwright install

Download from Artifact Repository

Playwright downloads browsers from Microsoft's CDN by default. If your company hosts browser binaries in an internal artifact repository, you can configure Playwright to download from there using the PLAYWRIGHT_DOWNLOAD_HOST environment variable.

Check Proxy Settings

If your company uses an internal proxy that blocks direct access to public resources, you can configure Playwright to download browsers via a proxy server by setting HTTPS_PROXY environment variables.

Remember, these steps are specific to the 'self_signed_cert_in_chain' error and may not cover all '@playwright/test' issues. Always refer to the official documentation or seek further assistance for specific problems.