a.ts

// Quick and easy
// add correlation id to app logs
// set correlation id in test steps (but ignore user-specified correlation id in production)

log.anonymised({some:"log"});

log.sensitive(() => {some:"log"});
log.sensitive({some:"log"});

// Maybe inconvenient, and maybe we don't need it
// Stateful thread locals would be better, but hey ho
const block = log.block("some block")
const subblock = block.block("some sub-block")

{
  rootId: 1, // in Log, from request scope
  parentId: 1, // created by block()
  id: 1, // automatic
}

{
  rootId: 1, // in Log, from request scope
  parentId: 1, // created by block()
  id: 2, // automatic
  type: "block",
  message: "some title"
}