fentastic/dist/esm/validateInputFen.js

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

export class InputError {
    constructor(message, argument) {
        this.message = message;
        this.argument = argument;
    }
}
export const validateInputFen = (fen) => {
    if (typeof fen !== 'string') {
        throw new InputError('FEN input must be of type \'string\'', 1);
    }
    if (!fen.length) {
        throw new InputError('FEN input string must not be empty', 1);
    }
    return fen;
};