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In Javascript you can iterate through a JSON array by using something like moves[i].name in a loop where moves is the JSON array, i is the index, and .name is the value. In typescript, however, when I try to iterate through a JSON array, the same syntax fails.

Typing `let name:String = totalMap[i].title; throws the error Element implicitly has an 'any' type because type 'JSON' has no index signature.

Is this a difference with Typescript or my code in general?

totalMap is initialized as (<any>map).allAreas where map is a JSON object.

The array is 

"allAreas" : [{
    "area1": {
        "title": "River",
        "description": "A quiet river deep inside a forest",
        "hazard": "All clear",
        "start": true,
        "north" : "Open field",
        "south" : "none",
        "east" : "none",
        "west" : "none"
    },..]

and then it continues on with more areas

Improve this question
5
  • post your array in the qeustion Commented Jan 27, 2018 at 4:37
  • Where are you getting the JSON from? What creates map? Commented Jan 27, 2018 at 4:45
  • Map is created by loading in a JSON file using require, like map = require('./files.json'); Commented Jan 27, 2018 at 4:55
  • read this: stackoverflow.com/questions/42400298/… Commented Jan 27, 2018 at 5:25
  • I can't reproduce this issue. Please post more of your code. Do you have some ambient type definition for JSON? Commented Jan 27, 2018 at 6:08
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