How to clear an array in a file using the fs module?

Question

Node.js

the file has an array of this type

{
  "event": [
  	{
  		"id": "1"
  	},
  	{
  		"id": "1"
  	},
  	{
  		"id": "1"
  	}
  ]
}

how can it be cleared using the FS module to get such an empty array

{
  "event": []
}

Answer 1

Read the file, parse json, set an empty array as the value of the property you are interested in, turn the object into json, write the file.

Answer 2

Use a regular expression, look for the desired text and replace it