Java/Python Import Cost

Display the size of Python and Java imports inline in the editor — inspired by the Import Cost extension.

Features

• Shows the size of imported packages inline next to import statements
• Supports Python (pip packages via PyPI API) and Java (Maven Central packages)
• Color-coded sizes: green (small), yellow (medium), red (large)
• Caches results to avoid repeated API calls
• Configurable size thresholds per language

Commands

• Java/Python Import Cost: Clear Cache — clears the cached package size results
• Java/Python Import Cost: Toggle Decorations — temporarily show/hide inline size decorations

Extension Settings

Setting	Default	Description
javaPythonImportCost.python.enabled	true	Show decorations for Python files
javaPythonImportCost.java.enabled	true	Show decorations for Java files
javaPythonImportCost.python.smallPackageSizeKB	1024	Max KB for "small" (green) in Python
javaPythonImportCost.python.mediumPackageSizeKB	1048576	Max KB for "medium" (yellow) in Python
javaPythonImportCost.java.smallPackageSizeKB	400	Max KB for "small" (green) in Java
javaPythonImportCost.java.mediumPackageSizeKB	5120	Max KB for "medium" (yellow) in Java
javaPythonImportCost.smallPackageColor	#4caf50	Text color for small packages
javaPythonImportCost.mediumPackageColor	#e6b422	Text color for medium packages
javaPythonImportCost.largePackageColor	#f44336	Text color for large packages
javaPythonImportCost.debounceInterval	300	Debounce (ms) before recalculating after edits
javaPythonImportCost.cacheTTL	1800	Cache TTL in seconds (0 to disable)

Why This Extension

A key goal is to make you aware of the size of packages you're about to depend on — and to encourage using fewer or smaller dependencies when possible. In some regions (such as mainland China), downloading packages can be painfully slow, so every kilobyte counts. The cost isn't measured in money, but in patience.

Future Plans

• Display the total size of a dependency tree (not just the directly imported package, but all transitive dependencies as well) — under consideration.

Issues & Contributing

Found a bug or have a feature idea? Please open an issue on GitHub.

I'm an undergraduate student maintaining this in my spare time — I may not respond quickly, and I might not be able to solve every issue. That said, forks are welcome and contributions are appreciated!

Release Notes

0.0.1

Initial release. Supports Python and Java import size decorators.