timelineOf

Fold a log into a timeline.

Source: packages/paykit/src/Timeline.ts Kind: Primitive

Fold a log into a timeline. Feed it from the account’s first event: the fold derives each entry’s period from the activation and close events before it, so a window that starts in the middle has no period to stamp its first entries with.

A bill’s story, from the events a console already holds

const timeline = timelineOf(entries); // [{ event, envelope }, …]
for (const entry of timeline.entries) {
  console.log(entry.at, entry.kind, entry.feature ?? "", entry.credits ?? "", entry.charge ?? "");
}