Method drain

src/process-sessions.ts:173–191

(maxCharacters: number)

  }

  drain(maxCharacters: number): { output: string; truncated: boolean } {
    if (!Number.isInteger(maxCharacters) || maxCharacters < 1) {
      throw new Error("Output limit must be a positive integer.");
    }

    const omittedByBuffer = Math.max(
      0,
      this.totalCharacters - codePointLength(this.head) - codePointLength(this.tail),
    );
    const retained = formatHeadTail(this.head, this.tail, omittedByBuffer);
    const output = truncateOutput(retained, maxCharacters);
    const truncated = omittedByBuffer > 0 || output.truncated;

    this.head = "";
    this.tail = "";
    this.totalCharacters = 0;

    return { output: output.output, truncated };
  }
}

function truncateOutput(output: string, maxCharacters: number): { output: string; truncated: boolean } {