fix(jupyter-widget): prevent erroneous CJS output

[chrisgervang]

Summary

• Bump @vis.gl/dev-tools to 1.0.2 which fixes a bug where the CJS fallback path used ./dist.index.cjs instead of ./dist/index.cjs
• Add exports field to jupyter-widget to prevent it from hitting the buggy fallback code path
• Add gitignore for erroneous dist.index.cjs files as a defensive measure

Background

After a clean build, modules/jupyter-widget/dist.index.cjs and .map files were being generated at the module root (not inside dist/). This was caused by a typo in @vis.gl/dev-tools@1.0.1 where modules without an exports field would get CJS files written to ./dist.index.cjs instead of ./dist/index.cjs.

Test plan

• Verify yarn build no longer produces modules/jupyter-widget/dist.index.cjs

🤖 Generated with Claude Code

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Note

Low Risk
Low risk dependency bump limited to dev tooling; primary risk is build/test behavior changes from the updated dev-tools package.

Overview
Updates the dev dependency @vis.gl/dev-tools from 1.0.1 to 1.0.2 (with corresponding yarn.lock updates), refreshing the repository’s build/test tooling dependency without changing application/runtime code.

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