The stringify method is very similar to the JSON.stringify but escaped certain HTML characters to prevent XSS attacks when passing data from the backend to the frontend script.

Consider the following example.

@set('userInput', "</script><script>alert('bad actor')</script>")
console.log({{{ JSON.stringify(userInput) }}})
console.log({{{ stringify(userInput) }}})

The JSON.stringify usage will execute the code as HTML, whereas the stringify method will not. Therefore, converting your back-end data structures to a JSON string using the stringify helper is recommended.