<commit_before>if (this.Symbol == null) {

    let index = 0;

    this.Symbol = class Symbol {

        constructor() {
            this._key = `__GLOBAL_SYMBOL_${index++}`;
        }

        toString() {
            return '';
        }

        static get iterator() {
            return iteratorSymbol;
        }
    }

    const iteratorSymbol = new Symbol();

}
<commit_msg>fix: ensure we use the generated symbol key<commit_after>if (this.Symbol == null) {

    let index = 0;

    this.Symbol = class Symbol {

        constructor() {
            this._key = `__GLOBAL_SYMBOL_${index++}`;
        }

        toString() {
            return this._key;
        }

        static get iterator() {
            return iteratorSymbol;
        }
    }

    const iteratorSymbol = new Symbol();

}

{'fraction_non_alphanumeric': 0.11514392991239049, 'fraction_numerical': 0.0025031289111389237, 'mean_word_length': 1.6058631921824105, 'pattern_counts': {'":': 0, '<': 3, '<?xml version=': 0, '>': 3, 'https://': 0, 'lorem ipsum': 0, 'www.': 0, 'xml': 0}, 'pii_count': 0, 'substrings_counts': 0, 'word_list_counts': {'cursed_substrings.json': 0, 'profanity_word_list.json': 0, 'sexual_word_list.json': 0, 'zh_pornsignals.json': 0}}
{'dir': 'git-commits-cleaned', 'id': '5876119', 'n_tokens_mistral': 230, 'n_tokens_neox': 219, 'n_words': 54}