Grab links from a NextJS pages directory using TS Morph

directories.ts

import { Project } from 'ts-morph';
import { capitalCase } from 'case-anything';

const project = new Project();

project.addSourceFilesAtPaths([
  `src/pages/**/*{.tsx,.mdx,.json}`,
  `!src/pages/_*.tsx`,
  `!src/pages/api/*.ts`,
]);

const allLinks = getLinks(project.getDirectory('src/pages'));

function getLinks(directory: Directory, parentSlug?: string) {
  const directoryName = directory.getBaseName();
  const sourceFiles = directory.getSourceFiles();
  const subDirectories = directory
    .getDirectories()
    .filter(
      (directory) =>
        !['api', 'assets', 'components', 'hooks', 'utils'].includes(
          directory.getBaseName()
        )
    );
  return sourceFiles
    .map((sourceFile) => {
      const name = sourceFile
        .getBaseNameWithoutExtension()
        .replace('index', '');
      return {
        title: capitalCase(
          name === '' ? directoryName : sourceFile.getBaseName()
        ),
        slug: `${parentSlug}/${directoryName}/${name}`,
      };
    })
    .concat(
      subDirectories.flatMap((directory) =>
        getLinks(
          directory,
          directoryName === 'pages' ? '' : `${parentSlug}/${directoryName}`
        )
      )
    );
}

source-files.ts

import { Project } from 'ts-morph';
import { capitalCase } from 'case-anything';
import matter from 'gray-matter';

const project = new Project();
const sourceFiles = project.addSourceFilesAtPaths([
  `src/pages/**/*{.tsx,.mdx,.json}`,
  `!src/pages/_*.tsx`,
  `!src/pages/api/*.ts`,
]);
const allLinks = sourceFiles
  .map((sourceFile) => {
    let name = sourceFile.getBaseNameWithoutExtension();

    if (name.includes('index')) {
      name = sourceFile.getDirectory().getBaseName();
    }

    if (sourceFile.getExtension() === '.mdx') {
      const { data } = matter(sourceFile.getText());
      name = data.title || name;
    }

    return {
      title: capitalCase(name),
      path: sourceFile.getFilePath(),
      slug: sourceFile
        .getFilePath()
        .replace(`${process.cwd()}/src/pages/`, '')
        .slice(0, -4),
    };
  });