Creating multiples pages with fragments of text -> Using BufferPages

[vitucordeiro]

Bug Report

Description of the problem

I'm using an object with an interface to generate the PDF. The loop has two functions: Create the page and generate the content on the page. I've noticed that by looping and generating the pages, somehow, it's generating more pages than expected and the content is being distributed among those pages created.

Code sample

This is the interface.

export interface PageInfo {
  pages: {
      to:string;
      pageNumber: number;
      data:{
        content: [string | string[], any] | string[] ;
        coordinates?: {
            x: number;
            y: number;
        };
      }[]

  }[];
}```

This is the methods 

```ts 
private async createPDF(pageInfo:PageInfo, pagesLength:number) {
          return new Promise<Buffer>((resolve, reject) => {
          console.time('Creating PDF');
          // Configuração do Pdfkit
          const pdfDoc = pdfCreate 
          const buffers: Buffer[] = [];
          pdfDoc.on('data', buffers.push.bind(buffers));

          pdfDoc.on('end', () => {
            const pdfData = Buffer.concat(buffers);
            resolve(pdfData);
          });
      
          for (let j = 0; j < pagesLength; j++) {

            pdfDoc.addPage();
            pdfDoc.switchToPage(j);
            // bug 
            let data = pageInfo.pages[j].data;
            for(let i = 0; i < data.length; i++) {  
              let content = data[i].content
              let stringContent = content.toString();
              let { x, y } = data[i].coordinates;
              pdfDoc.text(stringContent, x, y, {
                align: 'justify',
                ellipsis: true
              })
            }
            pdfDoc.save();
          }
      
          pdfDoc.end();
          console.timeEnd('Creating PDF');
        });
      }
      
      async createAndSavePDF(pageInfo:PageInfo, pagesLength:number, Response) {
        try {
          
          const pdfData = await this.createPDF(pageInfo, pagesLength);
      
          Response.setHeader('Content-Length', pdfData.length);
          Response.setHeader('Content-Type', 'application/pdf');
          Response.setHeader('Content-Disposition', 'attachment;filename=out.pdf');
      
          Response.end(pdfData);
        } catch (error) {
          Response.status(500).json({ error: error.message });
        }
      }

This is the result of a example of PDF:

Your environment

• pdfkit version: 0.13
• Node version: 18.17
• Browser version (if applicable):
• Operating System: Ubuntu 18.04.6