find the name of a directory in typescript

To find the name of a directory in TypeScript, we can use Node.js' built-in File System module. Specifically, we can use the path module's basename function to extract the directory name from a full file path.

Here's an example code snippet that demonstrates how to do this:

index.ts
import * as fs from 'fs';
import * as path from 'path';

const directoryPath = '/path/to/my/directory';

// Use fs.stat to check if the directory path exists
// and is in fact a directory
fs.stat(directoryPath, (err, stats) => {
  if (err || !stats.isDirectory()) {
    console.error('Error: Invalid directory path');
    return;
  }

  // Use path.basename to extract the directory name
  const directoryName = path.basename(directoryPath);
  console.log(`Directory name: ${directoryName}`);
});
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In this code snippet, we first define the directoryPath variable as a string representing the full path to the directory we want to find the name of.

Next, we use the fs.stat function to check if the directory exists and is in fact a directory. This function takes two arguments: the path to the directory, and a callback function that will be called with an error object and a stat object representing information about the file or directory. If there is an error or the directory is not a directory, we log an error message and return early.

If the directory exists and is in fact a directory, we use the path.basename function to extract the directory name from the directoryPath variable. This function takes a file path as its argument and returns the last part of the path (i.e. the directory name) regardless of any trailing slashes.

Finally, we log the directory name to the console.

Note that this code requires Node.js to be installed on your system, as well as the @types/node package installed in your TypeScript project.