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

Assuming you have already installed the fs-extra library along with its type definitions, you can use the tostring function as follows:

index.ts
import * as fs from 'fs-extra';

async function readFileAsString(filepath: string): Promise<string> {
  const buffer = await fs.readFile(filepath);
  return buffer.toString();
}
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In this example, we are using the readFile function from the fs-extra library to read the contents of a file as a buffer. We then convert the buffer to a string using the toString function and return the string as a Promise.

Note that the tostring function in JavaScript is actually spelled toString, with a capital "T". However, the TypeScript type definitions for the fs-extra library use the lowercase spelling, tostring, which can be a bit confusing.