The code imports dependencies and defines a listProjects function that scans a directory for project files based on a regular expression pattern, returning an object with project paths and names. The function is then exported as a module for use in other JavaScript files.

Run example

npm run import -- "List all projects by names"

List all projects by names

var importer = require('../Core');
var path = require('path');
var listInProject = importer.import("list project files");

// But we also want to automatically load projects?
function listProjects(root, match = '{,*,*/,*/*/*,*/*/*/*,*/*/*/*/*}+(package.json|NuGet.config|*.sln|*.csproj)') {
    var result = {};
    var matches = listInProject(root, match);
    matches.forEach(m => {
        var projectPath = path.resolve(path.dirname(m));
        result[path.basename(projectPath)] = projectPath;
    });
    return result;
};
module.exports = listProjects;

```javascript
const importer = require('../Core');
const path = require('path');

/**
 * Lists projects in a given directory.
 * 
 * @param {string} root - Directory to search for projects.
 * @param {string} [match='{,*,*/,*/*/*,*/*/*/*,*/*/*/*/*}+(package.json|NuGet.config|*.sln|*.csproj)'] - Regular expression to match project files.
 * @returns {object} - Object with project names as keys and paths as values.
 */
function listProjects(root, match = '{,*,*/,*/*/*,*/*/*/*,*/*/*/*/*}+(package.json|NuGet.config|*.sln|*.csproj)') {
  // Import list project files function from Core modules
  const listInProject = importer.import('list project files');

  // Get a list of files that match the given pattern
  const files = listInProject(root, match);

  // Create an object to store project names and paths
  const projects = {};

  // Iterate over the list of files
  files.forEach((file) => {
    // Get the directory path of the file
    const projectPath = path.resolve(path.dirname(file));

    // Get the project name from the directory path
    const projectName = path.basename(projectPath);

    // Add the project to the projects object
    projects[projectName] = projectPath;
  });

  // Return the projects object
  return projects;
}

// Export the listProjects function
module.exports = listProjects;
```

Code Breakdown

Importing Dependencies

var importer = require('../Core');
var path = require('path');
var listInProject = importer.import('list project files');

• The code imports three dependencies:
  • importer from a custom module ../Core
  • path from the built-in Node.js module
  • listInProject from the custom module ../Core, using the import method with the key 'list project files'

Defining the listProjects Function

function listProjects(root, match = '{,*,*/,*/*/*,*/*/*/*,*/*/*/*/*}+(package.json|NuGet.config|*.sln|*.csproj)') {
    //...
}

• The listProjects function takes two arguments:
  • root: the directory to scan for projects
  • match: a regular expression pattern (with a default value) used to filter project files

Implementing the listProjects Function

var result = {};
var matches = listInProject(root, match);
matches.forEach(m => {
    var projectPath = path.resolve(path.dirname(m));
    result[path.basename(projectPath)] = projectPath;
});
return result;

• The function initializes an empty object result to store the project paths
• It calls listInProject with root and match to get an array of matching file paths matches
• It iterates through matches and:
  • Resolves the directory path of each file using path.resolve and path.dirname
  • Extracts the project name from the directory path using path.basename
  • Stores the project path and name in the result object
• The function returns the result object

Exporting the listProjects Function

module.exports = listProjects;

• The code exports the listProjects function as a module, making it available for use in other JavaScript files.