scrabble-solver/packages/solver/src/getUniquePatterns.ts

Scrabble Solver 2 - Free, open-source, cross-platform, multi-language analysis tool for Scrabble, Scrabble Duel, Super Scrabble, Letter League, Crossplay, Literaki, and Kelimelik. Quickly find the top-scoring words using the given board and tiles.

import { type Pattern } from '@scrabble-solver/types';

import { getPatternHash } from './getPatternHash';

export const getUniquePatterns = (patterns: Pattern[]): Pattern[] => {
  const hashes = new Set<string>();
  const uniquePatterns: Pattern[] = [];

  for (const pattern of patterns) {
    const hash = getPatternHash(pattern);

    if (!hashes.has(hash)) {
      hashes.add(hash);
      uniquePatterns.push(pattern);
    }
  }

  return uniquePatterns;
};