Method feed

src/sanitize.js:145–153

(delta)

  }

  feed(delta) {
    if (!delta) return '';
    this.buffer += delta;
    const cut = this._safeCutPoint();
    if (cut === 0) return '';
    const safeRegion = this.buffer.slice(0, cut);
    this.buffer = this.buffer.slice(cut);
    return sanitizeText(safeRegion);
  }

  // Largest index into this.buffer such that buffer[0:cut] contains no
  // match that could extend past `cut`. Two conditions back off the cut: