盯梢：GitHub中文项目趋势

script.ts

import Cheerio from 'cheerio';

const PROJECT_DEDUPLICATE_LIMIT = 10000;
const WEEKLY_STARS_THRESHOLD = 100;

type Context = ScriptContext<{
  projects: string[];
}>;

export default async function (_payload: {}, {storage}: Context): Promise<ScriptMessage | undefined> {
  let projectSet = new Set(storage.getItem('projects'));

  let html =
    await fetch('https://github.vilicvane.workers.dev/trending?since=weekly&spoken_language_code=zh')
      .then(response => response.text());

  let $ = Cheerio.load(html);

  let projects = $('.Box article.Box-row')
    .toArray()
    .map(article => {
      let href = $('h1 > a', article).attr('href')!;

      let name = href.replace(/^\//, '');

      let description = $('h1 + p', article).text().trim();

      let bottom = $('h1 + p + div', article);

      let language = $('> span:first-child', bottom).text().trim() || '未知语言';
      let stars = Number($('> a:first-of-type', bottom).text().replace(/[^\d]/g, ''));
      let weeklyStars = Number($('> :last-child', bottom).text().replace(/[^\d]/g, ''));

      return {
        name,
        language,
        stars,
        weeklyStars,
        description,
      };
    })
    .filter(project => project.weeklyStars >= WEEKLY_STARS_THRESHOLD && !projectSet.has(project.name));
  
  if (projects.length === 0) {
    console.log('暂无新项目～');
    return undefined;
  }

  let tags = Array.from(new Set(projects.map(project => project.language)));

  storage.setItem('projects', [
    ...projectSet,
    ...projects.map(project => project.name),
  ].slice(-PROJECT_DEDUPLICATE_LIMIT));

  return {
    content: `\
又发现了 ${projects.length} 个当周 star 数超过 ${WEEKLY_STARS_THRESHOLD} 的中文项目：

${projects.map(project => `📦 ${project.name}\n${project.language} ${project.stars}🌟+${project.weeklyStars}\n${project.description}`).join('\n\n')}`,
    links: projects.map(project => {
      return {
        url: `https://github.com/${project.name}`,
        description: `${project.name} (${project.language})`,
      };
    }),
    tags,
  };
}