Description

I'm working on a cli which uses vite as a dependency.
I'm also using the source-map-support package to transform error stacktrace frames.

When running the cli, the vite module is loaded. During the load, it eagerly creates an Error and accesses its stack property, which triggers source mapping.
This is pretty slow and incurs a few hundred ms on my cli's startup time (might be different numbers on different hardware).

Proposed solution - calculate the offset (which accesses stack) lazily - only when we actually need to rewrite an ssr stacktrace.

Additional context

1. I didn't add a test that will break without this change, don't know if it's possible and/or worth it. Will be happy to add with some help.
2. I labeled the PR as a refactor, I didn't really know what is the category for that. Is this considered a perf improvement?

What is the purpose of this pull request?

• Bug fix
• New Feature
• Documentation update
• Other

Before submitting the PR, please make sure you do the following

• Read the Contributing Guidelines.
• Read the Pull Request Guidelines and follow the PR Title Convention.
• Check that there isn't already a PR that solves the problem the same way to avoid creating a duplicate.
• Provide a description in this PR that addresses what the PR is solving, or reference the issue that it solves (e.g. fixes #123).
• Ideally, include relevant tests that fail without this PR but pass with it.