in script/build.ts [115:123]
async function writeJsonOutput(collection: ModeCollection): Promise<void> {
for (const [_name, vars] of collection) {
let output = JSON.stringify(camelcaseKeys(vars.tree(), {deep: true}), null, ' ')
const dir = path.join(jsonDir, collection.type)
await mkdirp(dir)
fs.writeFileSync(path.join(dir, `${vars.name}.json`), output)
}
}