Schema

[flying-sheep]

TODO: only use innermost tag:

cargo run -- --schema | npx --package=json-schema-to-typescript json2ts --additionalProperties=false | save -f target/schema.d.ts

currently creates

export type StructuralSubElement = Title | Subtitle | Decoration | Docinfo | SubStructure;
export type SubStructure = {  type: "SubStructure" } & (… | BodyElement);
export type BodyElement = { type: "BodyElement" } & (…);

which makes no sense