{
  "$schema": "https://developer.microsoft.com/json-schemas/sp/column-formatting.schema.json",
  "elmType": "div",
  "txtContent": "@currentField",
  "style": {
    "text-decoration": {
      "operator": "?",
      "operands": [
        "[$Complete]",
        "line-through",
        "inherit"
      ]
    }
  },
  "attributes": {
    "class": "ms-fontColor-neutralPrimary"
  }
}