How convert JSON to CoffeeScript and write on a file ".coffee"?

Question

How convert JSON to CoffeeScript and write on a file ".coffee" with NodeJS?

JSON:

{
  "name": "jack",
  "type": 1
}

to CoffeeScript:

"name": "jack"
"type": 1

Huge fan of coffeescript and I agree with Neal, there's no good reason to do this. JSON in "js" form is entirely compatible with coffeescript. If you want to reshape the object then that is a different question. — jcollum, Sep 23 '13 at 17:17

score 2 · Answer 1 · edited May 23 '17 at 11:47

Should be easy enough by traversing the object (for … of). Just use recursion and take the indent level as an argument:

esc_string = (s) ->
  return '"' + s.replace(/[\\"]/g, '\\$1') + '"'

csonify = (obj, indent) ->
  indent = if indent then indent + 1 else 1
  prefix = Array(indent).join "\t"
  return prefix + esc_string obj if typeof obj is 'string'
  return prefix + obj if typeof obj isnt 'object'
  return prefix + '[\n' + (csonify(value, indent) for value in obj).join('\n') + '\n' + prefix + ']' if Array.isArray obj
  return (prefix + esc_string(key) + ':\n' + csonify(value, indent) for key, value of obj).join '\n'

Test case:

alert csonify
  brother:
    name: "Max"
    age:  11
    toys: [
      "Lego"
      "PSP"
    ]
  sister:
    name: "Ida"
    age:  9

Result:

"brother":
    "name":
        "Max"
    "age":
        11
    "toys":
        [
            "Lego"
            "PSP"
        ]
"sister":
    "name":
        "Ida"
    "age":
        9

^{No live demo, since I don't know a JSFiddle for CoffeScript.}

Live demo: http://jsfiddle.net/vtX3p/

score -4 · Accepted Answer · answered Sep 23 '13 at 15:31

-4

I hope you know how to read and write files in nodejs, so i will not address that here. To convert javascript to coffeescript you can use this npm:

https://github.com/rstacruz/js2coffee

answered Sep 23 '13 at 15:31

mkoryak

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How convert JSON to CoffeeScript and write on a file ".coffee"?

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