import { Bracket, RoundProps } from 'react-brackets';

const rounds: RoundProps[] = [
  {
    title: 'Round one',
    seeds: [
      {
        id: 1,
        date: new Date().toDateString(),
        teams: [{ name: 'Team A' }, { name: 'Team B' }],
      },
      {
        id: 2,
        date: new Date().toDateString(),
        teams: [{ name: 'Team C' }, { name: 'Team D' }],
      },
    ],
  },
  {
    title: 'Round one',
    seeds: [
      {
        id: 3,
        date: new Date().toDateString(),
        teams: [{ name: 'Team A' }, { name: 'Team C' }],
      },
    ],
  },
];

const Component = () => {
  return <Bracket rounds={rounds} />;
};

import { Bracket, RoundProps } from 'react-brackets';
import React from 'react';

const Component = () => {
  //....
  return (
    <Bracket
      rounds={rounds}
      roundTitleComponent={(title: React.ReactNode, roundIndex: number) => {
        return <div style={{ textAlign: 'center', color: 'red' }}>{title}</div>;
      }}
    />
  );
};

import { Bracket, RoundProps, Seed, SeedItem, SeedTeam, RenderSeedProps } from 'react-brackets';
import React from 'react';

const CustomSeed = ({seed, breakpoint, roundIndex, seedIndex}: RenderSeedProps) => {
  // breakpoint passed to Bracket component
  // to check if mobile view is triggered or not

  // mobileBreakpoint is required to be passed down to a seed
  return (
    <Seed mobileBreakpoint={breakpoint} style={{ fontSize: 12 }}>
      <SeedItem>
        <div>
          <SeedTeam style={{ color: 'red' }}>{seed.teams[0]?.name || 'NO TEAM '}</SeedTeam>
          <SeedTeam>{seed.teams[1]?.name || 'NO TEAM '}</SeedTeam>
        </div>
      </SeedItem>
    </Seed>
  );
};

const Component = () => {
  //....
  return <Bracket rounds={rounds} renderSeedComponent={CustomSeed} />;
};

import { Bracket, RoundProps, Seed, SingleLineSeed, SeedItem, SeedTeam, RenderSeedProps } from 'react-brackets';
import React from 'react';

const CustomSeed = ({seed, breakpoint, roundIndex, seedIndex}: RenderSeedProps) => {
  // ------ assuming rounds is the losers brackets rounds ------
  // losers rounds usually got some identical seeds amount like (2 - 2 - 1 - 1)

  const isLineConnector = rounds[roundIndex].seeds.length === rounds[roundIndex + 1]?.seeds.length;

  const Wrapper = isLineConnector ? SingleLineSeed : Seed;

  // mobileBreakpoint is required to be passed down to a seed
  return (
    <Wrapper mobileBreakpoint={breakpoint} style={{ fontSize: 12 }}>
      <SeedItem>
        <div>
          <SeedTeam style={{ color: 'red' }}>{seed.teams[0]?.name || 'NO TEAM '}</SeedTeam>
          <SeedTeam>{seed.teams[1]?.name || 'NO TEAM '}</SeedTeam>
        </div>
      </SeedItem>
    </Wrapper>
  );
};

const Component = () => {
  //....
  return <Bracket rounds={rounds} renderSeedComponent={CustomSeed} />;
};