react-brackets

Dynamic bracket component, usable for brackets such as single elimination and double elimination

Install

via npm

npm install --save react-brackets

via yarn

yarn add --save react-brackets

Usage

The simplest usage of this component is

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} />;
};

The core shape is similar to the above, since we can customize seeds and titles, you can pass any additional data to a seed or treat the title as a component.

modifying a title of the round is so simple,

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>;
      }}
    />
  );
};

Customizing a seed on the other hand is a little bit more complicated, yet still easy, because we need to let the bracket tree to have a consitent design

Any additional data you pass inside a seed object is accessibile via renderSeedComponent

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} />;
};

How about if I want to use this component for double elimination losing bracket? the current Seed component only works on single elimination, the answer is fairly simple as well.

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} />;
};

Two-sided Single Elimination

How to render Single Elimination as a two-sided bracket? You must set twoSided to true, and structure your custom seed render component like below, if you have a custom seed render component.

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

const CustomSeed = ({seed, breakpoint, roundIndex, seedIndex, isMiddleOfTwoSided}: 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
  const Wrapper = isMiddleOfTwoSided ? SingleLineSeed : 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} twoSided={true} />;
};

Bracket Props

Prop	Type	Description
rounds	RoundProps[]	Array of rounds, each round has {title,array of seeds}, if you're not using a custom seed render, each seed needs an array of teams, each team should have a name
mobileBreakpoint	number	This bracket supports responsive design, on window reaching this size, it will trigger mobile swipable view, if you want to disable it, you can pass 0, (default is 992)
rtl	boolean	Direction of the bracket as RTL (default is LTR)
twoSided	boolean	Sets Single elimination to be two sided if true. Default is False
roundClassName	string	Round wrapper className
bracketClassName	string	The bracket className
renderSeedComponent	functional component	Custom render for every seed
roundTitleComponent	functional component	Custom render for every round title
swipeableProps	SwipeableProps	Please check this React Swipeable Views

For detailed examples, you can clone this repo then:

you can skip starting the root folder, but if you want to modify the library you have to run it.

yarn

then

yarn start

then open a new terminal

cd example

then

yarn

lastly

yarn start

License

MIT © mohammadou1