Lua ↔ JSON

Paste a Lua table such as a FiveM Config.lua and get JSON, or paste JSON and get a tidy Lua table. A small real parser reads the data: nothing is run, and mistakes are reported with line and column.

Options

JSON indentEmpty table {} becomes

Lua table

JSON

{
  "Debug": false,
  "Locale": "en",
  "Blip": {
    "sprite": 477,
    "color": 5,
    "scale": 0.8
  },
  "Locations": [
    {
      "name": "Legion",
      "coords": {
        "x": 215.8,
        "y": -810.1,
        "z": 30.7
      },
      "heading": 160
    },
    {
      "name": "Sandy",
      "coords": {
        "x": 1737.2,
        "y": 3710.4,
        "z": 34.1
      },
      "heading": 20.5
    }
  ],
  "Items": [
    "water",
    "bread"
  ],
  "Keys": {
    "E": 38,
    "47": "G"
  }
}

What was changed

Removed the leading `Config =`; only the value is converted.
vector2/3/4 and vec2/3/4 constructors (2 times) became objects with x, y, z, w keys, since JSON has no vector type.
A table mixes array-style entries with other keys, so JSON object keys were used ("1", "2", ... for positional values, "true"/"false" for boolean keys).
Comments were dropped: JSON has no comments.

How the conversion works

Only data is read. Variables, function calls and arithmetic are never evaluated; they produce an error with the exact line and column.
A table with keys 1..n (positional, or [1]=, [2]=…) is a JSON array; anything else is an object. Non-string keys become strings.
nil becomes null; a nil inside a list keeps its slot. Gaps in integer keys are not padded: that table becomes an object.
vector2/3/4 and vec2/3/4 become {x, y, z, w} objects.
Supported: both quote styles, escapes, [[long strings]], hex/float/exponent numbers, -- comments, and a leading return or local Config =. One top-level value per input.

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