Method logFragment

core/llm/logFormatter.ts:157–219

(
    item: LLMInteractionItem,
    fragment: string,
    startAt: number,
    marker: string = "",
    joinBefore: boolean = false,
    joinAfter: boolean = false,
    wrap: boolean = false,
  )

  // the implementation behind logLines and logMessageText
  private logFragment(
    item: LLMInteractionItem,
    fragment: string,
    startAt: number,
    marker: string = "",
    joinBefore: boolean = false,
    joinAfter: boolean = false,
    wrap: boolean = false,
  ) {
    const interaction = this.getInteractionData(item);

    if (
      this.openLine &&
      (!joinBefore || item.interactionId !== this.lastItem?.interactionId)
    ) {
      this.openLine = false;
      this.openLineChars = 0;
      this.output.write("\n");
    }

    let continueAt = null;
    if (
      wrap &&
      fragment.length - startAt > this.wrapWidth - this.openLineChars
    ) {
      continueAt = startAt + this.wrapWidth - this.openLineChars;

      // Look for a better line-breaking point at whitespace
      const searchBackwardLimit = Math.max(startAt, continueAt - 20); // Don't look back too far
      for (let i = continueAt; i > searchBackwardLimit; i--) {
        if (/\s/.test(fragment.charAt(i))) {
          continueAt = i + 1; // Break after the whitespace
          break;
        }
      }

      // When there's whitespace immediately after the wrap width,
      // the above will result in breaking *after* that, so we exceed
      // the wrap width. The trimEnd() avoids that.
      fragment = fragment.substring(startAt, continueAt).trimEnd();
      joinAfter = false;
    } else if (startAt > 0) {
      fragment = fragment.substring(startAt);
    }

    if (!this.openLine || !this.openLine) {
      let timestamp = this.formatTimestamp(interaction, item);
      this.output.write(`${interaction.prefix}${timestamp} ${marker}`);
      this.lastLineStartItem = item;
    }

    this.output.write(fragment);
    this.openLine = joinAfter;
    this.lastItem = item;
    if (!this.openLine) {
      this.output.write("\n");
      this.openLineChars = 0;
    } else {