node-fs-example

An example problem to learn file operations using fs module of node

Problem Statement

You have been given 3 files containing some data in ./seed. Perform the following operations on the data:

1. Read all files and display the output as an object with file name as key and the contents as array of strings i.e.

   {
       vegetables: ["carrot", "beans"...],
       fruits: ["mango"...]
   }
   

   Your code should now accept an optional parameter which allows you to filter records based on first character of the record

   eg:- Get all vegetables/fruits/beverages that start with letter `c`
   Output -
   {
       vegetables: ["carrot"],
       fruits: []
   }
   

   Bonus for handling error scenarios

2. Add the following items to beverages.txt using node:

    tea
    hot chocolate
    coffee
   

   Use the same function to append the following in given files:

    fruits.txt:
        strawberry
        peach
    vegetables.txt:
        pumpkin
   

   Function should return the final content of file in the format shown in 1.

3. Remove the vegetables from vegetables.txt which start with letter c

   • Function should return the final content of file in the format shown in 1.