how to use the access function from the fs-extra library in typescript

To use the access function from the fs-extra library in TypeScript, you can follow the below steps:

1. Install the @types/fs-extra package, which contains the TypeScript type definitions for the fs-extra library.

index.ts
npm install --save-dev @types/fs-extra
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2. Import the access function from the fs-extra library at the beginning of the TypeScript file:

index.ts
import { access } from 'fs-extra';
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3. Use the access function to check if a file or directory exists and has the permission to access it. The function takes two arguments:

• path: string | Buffer: The path of the file or directory that needs to be checked.
• mode?: number: Optional parameter that specifies the permission mode. By default, it is fs.constants.F_OK, which checks for the existence of the file.

Here is an example of how to use the access function in TypeScript:

index.ts
async function checkFileOrDir() {
  const filePath = '/path/to/file.txt';
  try {
    await access(filePath); // Check if file exists and can be accessed
    console.log(`File ${filePath} exists and can be accessed`);
  } catch (error) {
    console.error(`File ${filePath} does not exist or cannot be accessed`);
  }
}
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Note that the access function returns a Promise, which needs to be handled using async/await or .then()/.catch() syntax.