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@poker-apprentice/hand-range-notation

v1.0.0

Published

Convert poker hand range notation to and from poker hands

Downloads

141

Readme

Hand Range Notation

Convert poker hand range notation to and from actual poker hands.

Installation

Add @poker-apprentice/hand-range-notation as a dependency.

  • yarn:
    yarn add @poker-apprentice/hand-range-notation
  • npm:
    npm install @poker-apprentice/hand-range-notation --save

Usage

expandNotation

This function is used to parse a string representing a hand range notation. If a hand range notation cannot be parsed, it will throw an InvalidHandRangeNotationError.

// specific suited hands
const hands = expandNotation('AKs');
console.log(hands); // [['As', 'Ks'], ['Ah', 'Kh'], ['Ad', 'Kd'], ['Ac', 'Kc']]

// specific unsuited hands
const hands = expandNotation('AKo');
console.log(hands); // [['As', 'Kh'], ['As', 'Kd'], ['As', 'Kc'], /* ... */]

// specific hands regardless of suitedness
const hands = expandNotation('AK');
console.log(hands); // [['As', 'Ks'], ['As', 'Kh'], ['As', 'Kd'], /* ... */]

// specific hands with specific suits
const hands = expandNotation('AcKd');
console.log(hands); // [['Ac', 'Kd']]

// pocket pairs
const hands = expandNotation('TT');
console.log(hands); // [['Ts', 'Th'], ['Ts', 'Td'], ['Ts', 'Tc'], /* ... */]

// hand ranges
const hands = expandNotation('AKs-A2s');
const hands = expandNotation('KQo-KJo');
const hands = expandNotation('AK-AT');
const hands = expandNotation('99-22');

// hand minimums
const hands = expandNotation('AT+');
const hands = expandNotation('ATs+');
const hands = expandNotation('TT+');

// multiple ranges
const hands = expandNotation('ATs+, 99-22, AA, KQ, KJs, AcTd');

notate

This function is used to generate a hand range notation string representing a collection of hands.

Only two-card Texas Hold'em hands are supported. Providing hands of any other length will result in an InvalidHandError being thrown.

const notation = notate([
  ['As', 'Ks'],
  ['Ah', 'Kh'],
  ['Ad', 'Kd'],
  ['Ac', 'Kc'],
  ['As', 'Qs'],
  ['Ah', 'Qh'],
  ['Ad', 'Qd'],
  ['Ac', 'Qc'],
  ['Js', 'Jh'],
  ['Js', 'Jd'],
  ['Js', 'Jc'],
  ['Jh', 'Jd'],
  ['Jh', 'Jc'],
  ['Jd', 'Jc'],
  ['Ts', 'Th'],
  ['Ts', 'Td'],
  ['Ts', 'Tc'],
  ['Th', 'Td'],
  ['Th', 'Tc'],
  ['Td', 'Tc'],
]);
console.log(notation); // 'JJ-TT,AQs+'

normalizeNotation

This function converts the provided notation into a predictable/deterministic format.

const notation = normalizeNotation('AKs,TT,QAo,AA'));
console.log(notation); // 'AA,TT,AKs,AQo'

const hands = expandNotation('7d2c,3h2s,KQo,AQo,AKo,ATs+,TT+,A2s-A5s');
const notation = notate(hands);
console.log(notation); // 'TT+,ATs+,A5s-A2s,AQo+,KQo,7d2c,3h2s'