@buzzr/bets-core

Pure TypeScript contracts and helpers for Buzzr Bets.

This package intentionally contains no React, no native modules, no Supabase client, no network calls, and no credentials. It is the app-facing domain layer for sportsbook normalization, external bet keys, no-vig fair-line math, ROI rollups, and converting tracked bet records into settlement inputs shaped for @buzzr/dfs-engine.

The package has zero runtime dependencies. Consumers can install @buzzr/dfs-engine when they want to pass the adapter output directly into the Settlement OS, but app-side odds and rollup helpers do not pull the engine into the bundle.

npm install @buzzr/bets-core

import {
  betRecordToDfsEntryInput,
  calculateNoVigFairLine,
  normalizeSportsbookSlug,
} from '@buzzr/bets-core';

normalizeSportsbookSlug('Draft Kings'); // draftkings

calculateNoVigFairLine({
  selected: { side: 'home', americanOdds: -110 },
  opposite: { side: 'away', americanOdds: -105 },
});

const dfsInput = betRecordToDfsEntryInput({
  id: 'bet-1',
  userId: 'user-1',
  sportsbookSlug: 'prizepicks',
  kind: 'dfs',
  status: 'pending',
  stake: 10,
  placedAt: '2026-05-13T00:00:00.000Z',
  dfs: {
    playTypeId: 'power',
    displayedMultiplier: 3,
  },
  legs: [
    {
      legId: 'leg-1',
      playerName: 'A. Example',
      league: 'NBA',
      propType: 'Points',
      line: 20.5,
      direction: 'over',
    },
    {
      legId: 'leg-2',
      playerName: 'B. Example',
      league: 'NBA',
      propType: 'Rebounds',
      line: 7.5,
      direction: 'over',
    },
  ],
});