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

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

1. Install the @types/fs-extra package as a development dependency by running the following command:

   index.ts
   npm install --save-dev @types/fs-extra
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2. Import the fs-extra module and the readvSync function in your TypeScript file:

   index.ts
   import * as fs from 'fs-extra';
   const { readvSync } = fs;
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3. Use the readvSync function to read data from a file:

   index.ts
   const fd = fs.openSync('/path/to/file', 'r');
   const buffers = [Buffer.alloc(10), Buffer.alloc(20)];
   const bytesRead = readvSync(fd, buffers, 0, 30, 0);
   console.log(`Read ${bytesRead} bytes from file`);
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   This code opens a file in read mode, allocates two buffers of different sizes, and reads 30 bytes from the file into the buffers starting at offset 0. The function returns the number of bytes read, which is printed to the console.

Note that readvSync is a synchronous function, so it blocks the thread until the read operation is complete. This may not be ideal for reading large files or performing many concurrent operations. You may want to consider using the asynchronous readv function instead or using a different library that provides better support for asynchronous file operations.