@lucid-softworks/config-core

Shared contracts for configuration sources, immutable layers, nested paths, and leaf-level provenance.

const layer = createConfigLayer("defaults", {
  server: { port: 3000 },
});

layer.provenance.get("/server/port");
// { source: "defaults", path: ["server", "port"] }

Paths use JSON Pointer escaping and object writes treat __proto__ as an ordinary own property.