fentastic/dist/esm/createFields.js

Validate and parse Forsyth-Edwards Notation (FEN) used to describe a chess game board position.

import { ParseError, ParseErrors } from './ParseError.js';
import { createTokenGroups } from './createTokenGroups.js';
import { isWhiteSpace } from './whiteSpaceUtils.js';
import { validatePieceField } from './parsePieceField.js';
import { validateActiveColor } from './parseActiveColor.js';
import { validateCastlingAvailability } from './parseCastlingAvailability.js';
import { validateEnPassantTargetSquare } from './parseEnPassantTargetSquare.js';
import { validateHalfMoveClock, validateFullMoveNumber } from './parseClocks.js';
export const validateFields = (fields) => {
    validatePieceField(fields[0]);
    validateActiveColor(fields[1]);
    validateCastlingAvailability(fields[2]);
    validateEnPassantTargetSquare(fields[3]);
    validateHalfMoveClock(fields[4]);
    validateFullMoveNumber(fields[5]);
    const errors = fields
        .filter((f) => f.error instanceof ParseError)
        .map((f) => f.error);
    if (errors.length) {
        throw new ParseErrors(errors);
    }
    return fields;
};
export const createFields = (tokens) => {
    const tokenGroups = createTokenGroups(isWhiteSpace, tokens);
    if (tokenGroups.length !== 6) {
        const last = tokens[tokens.length - 1];
        throw new ParseError('Fields', tokenGroups.length, last.index, '6', 'field count to be', 'count');
    }
    return tokenGroups;
};