ThemePackage.activateConfig is deprecated.

[alexgibson]

Use a config schema instead. See the configuration section
of https://atom.io/docs/latest/hacking-atom-package-word-count and
https://atom.io/docs/api/latest/Config for more details

ThemePackage.activateConfig (/Applications/Atom.app/Contents/Resources/app.asar/src/package.js:247:11)
PackageDetailView.activate (/Applications/Atom.app/Contents/Resources/app.asar/node_modules/settings-view/lib/package-detail-view.js:155:26)
PackageDetailView.updateInstalledState (/Applications/Atom.app/Contents/Resources/app.asar/node_modules/settings-view/lib/package-detail-view.js:193:12)
<unknown> (/Applications/Atom.app/Contents/Resources/app.asar/node_modules/settings-view/lib/package-detail-view.js:222:24)

[izuzak]

Thanks for the report, @alexgibson -- this looks like a duplicate of #477. There's a problem with how these deprecated calls are attributed to packages -- this should be fixed when atom/atom#6510 is merged and a new Atom version is released. Currently, those calls are incorrectly attributed to Atom core or to the settings view package.