Writing a Lightweight Charts™ plugin

This skill is about authoring plugins. For questions about using the chart itself — series, scales, markers, data, wrappers — use the sibling lightweight-charts skill; the two are designed to be installed together.

Where you are, and where the sources are

This skill is used in two places, and the same question has a different answer in each. Detect which before looking anything up:

# upstream checkout of lightweight-charts itself?
test -f pnpm-workspace.yaml && test -d packages/lwc-toolkit && echo upstream || echo "a plugin project or other repo"

In a plugin project or any other repository (the common case):