T1007: Circular token reference

Cause

Tokens refer to each other in a loop, so none of them has a value.

Example

// base.tokens.json
{
  "$type": "color",
  "a": {
    "$value": "{b}"
  },
  "b": {
    "$value": "{a}"
  }
}

What you see

ERROR  T1007  base.tokens.json  a
  Circular reference: a -> b -> a
  Run `tessera explain T1007` for details.

Fix

Break the loop: one of the tokens in the chain must hold a real value.

All errors and warnings