RangeError: Invalid count value when running "parse-pages"

[Vadorequest]

Running yarn parse-pages -- Communication yields error:

data/Communication/reseaux-sociaux/unly/twitter.json -> data/Communication/reseaux-sociaux/unly/twitter.md
file:///Users/vadorequest/dev/gitbook-to-md/built/MarkdownRenderer.js:70
      block += " ".repeat((this.listCount.length - 1) * 2);
                   ^

RangeError: Invalid count value
    at String.repeat (<anonymous>)
    at MarkdownRenderer.renderBlock (file:///Users/vadorequest/dev/gitbook-to-md/built/MarkdownRenderer.js:70:20)
    at MarkdownRenderer.renderNode (file:///Users/vadorequest/dev/gitbook-to-md/built/MarkdownRenderer.js:31:24)
    at MarkdownRenderer.renderChildren (file:///Users/vadorequest/dev/gitbook-to-md/built/MarkdownRenderer.js:136:22)
    at getChildren (file:///Users/vadorequest/dev/gitbook-to-md/built/MarkdownRenderer.js:52:36)
    at MarkdownRenderer.renderBlock (file:///Users/vadorequest/dev/gitbook-to-md/built/MarkdownRenderer.js:96:15)
    at MarkdownRenderer.renderNode (file:///Users/vadorequest/dev/gitbook-to-md/built/MarkdownRenderer.js:31:24)
    at MarkdownRenderer.renderChildren (file:///Users/vadorequest/dev/gitbook-to-md/built/MarkdownRenderer.js:136:22)
    at MarkdownRenderer.renderNode (file:///Users/vadorequest/dev/gitbook-to-md/built/MarkdownRenderer.js:28:24)
    at MarkdownRenderer.render (file:///Users/vadorequest/dev/gitbook-to-md/built/MarkdownRenderer.js:22:46)
error Command failed with exit code 1.
info Visit https://yarnpkg.com/en/docs/cli/run for documentation about this command.

Document data/Communication/reseaux-sociaux/unly/twitter.json:

{"id":"-LY7NG876FvrUg1fVjZN","title":"Twitter","kind":"sheet","description":"La page corpo de la marque","path":"reseaux-sociaux/unly/twitter","slug":"twitter","pages":[],"document":{"object":"document","data":{"schemaVersion":5},"nodes":[{"object":"block","type":"paragraph","isVoid":false,"data":{},"nodes":[{"object":"text","leaves":[{"object":"leaf","text":"OBJECTIF : ","marks":[{"object":"mark","type":"bold","data":{}}],"selections":[]},{"object":"leaf","text":"Notoriété et trafic","marks":[],"selections":[]}]}]},{"object":"block","type":"paragraph","isVoid":false,"data":{},"nodes":[{"object":"text","leaves":[{"object":"leaf","text":"CIBLE : ","marks":[{"object":"mark","type":"bold","data":{}}],"selections":[]},{"object":"leaf","text":"BtoB","marks":[],"selections":[]}]}]},{"object":"block","type":"paragraph","isVoid":false,"data":{},"nodes":[{"object":"text","leaves":[{"object":"leaf","text":"TON :  ","marks":[{"object":"mark","type":"bold","data":{}}],"selections":[]},{"object":"leaf","text":"Soutenu / professionnel","marks":[],"selections":[]}]}]},{"object":"block","type":"paragraph","isVoid":false,"data":{},"nodes":[{"object":"text","leaves":[{"object":"leaf","text":"THÉMATIQUES DES POSTS :","marks":[{"object":"mark","type":"bold","data":{}}],"selections":[]}]}]},{"object":"block","type":"list-unordered","isVoid":false,"data":{},"nodes":[{"object":"block","type":"list-item","isVoid":false,"data":{},"nodes":[{"object":"block","type":"paragraph","isVoid":false,"data":{},"nodes":[{"object":"text","leaves":[{"object":"leaf","text":"Actualités sur le secteur EdTech et FinTech","marks":[],"selections":[]}]}]}]},{"object":"block","type":"list-item","isVoid":false,"data":{},"nodes":[{"object":"block","type":"paragraph","isVoid":false,"data":{},"nodes":[{"object":"text","leaves":[{"object":"leaf","text":"Annonces/lancement de solutions","marks":[],"selections":[]}]}]}]},{"object":"block","type":"list-item","isVoid":false,"data":{},"nodes":[{"object":"block","type":"paragraph","isVoid":false,"data":{},"nodes":[{"object":"text","leaves":[{"object":"leaf","text":"Annonces de projets de partenariats/ de développement > place du réseautage","marks":[],"selections":[]}]}]}]},{"object":"block","type":"list-item","isVoid":false,"data":{},"nodes":[{"object":"block","type":"paragraph","isVoid":false,"data":{},"nodes":[{"object":"text","leaves":[{"object":"leaf","text":"Relations client/ partenariat/ presse (remerciement, identification, clin d’œil…)","marks":[],"selections":[]}]}]}]},{"object":"block","type":"list-item","isVoid":false,"data":{},"nodes":[{"object":"block","type":"paragraph","isVoid":false,"data":{},"nodes":[{"object":"text","leaves":[{"object":"leaf","text":"Evénements professionnels (colloques, conférences, salon…)","marks":[],"selections":[]}]}]}]},{"object":"block","type":"list-item","isVoid":false,"data":{},"nodes":[{"object":"block","type":"paragraph","isVoid":false,"data":{},"nodes":[{"object":"text","leaves":[{"object":"leaf","text":"Relai des résultats du baromètre","marks":[],"selections":[]}]}]}]}]},{"object":"block","type":"paragraph","isVoid":false,"data":{},"nodes":[{"object":"text","leaves":[{"object":"leaf","text":"ACTION : ","marks":[{"object":"mark","type":"bold","data":{}}],"selections":[]},{"object":"leaf","text":"retweet des posts de partenaires, presse (articles sur Unly et du secteur) et figures d’influence","marks":[],"selections":[]}]}]},{"object":"block","type":"paragraph","isVoid":false,"data":{},"nodes":[{"object":"text","leaves":[{"object":"leaf","text":"","marks":[],"selections":[]}]}]}]}}

Deleting the document and re-running the command fixes the issue, must be something that isn't properly handled (edge case)

[Vadorequest]

It also happened when the JSON file was completely empty.

[Vadorequest]

Solution in src/convertToMarkdown.ts:

import { promises as fs } from 'fs';
import type { Files } from './MarkdownRenderer.js';
import MarkdownRenderer from './MarkdownRenderer.js';

export default async (filename: string, files: Files = {}) => {
  const renderer = new MarkdownRenderer(files);
  const file = await fs.readFile(filename, 'utf8');

  try {
    const data = JSON.parse(file);
    const output = data.kind == 'sheet' ? renderer.render(data.document) : undefined;

    return output;
  } catch (e) {
    console.error(`The file "${filename}" couldn't be JSON parsed.`, e, file);

    return null;
  }
};