tslint - Missing trailing comma (trailing-comma) on the last line

Question

I cannot figure out why my tslint even want to see the trailing comma on the end of the last line in the objects? How can I set the ignore rule for the last line of the objects for example? Thanks.

Exemple:

  props = {
    prop1: 21, // good
    prop2: 2, // good
    prop3: false // error: [tslint] Missing trailing comma (trailing-comma)

  }

Rule for trailing-comma in my tsconfig.json:

"trailing-comma": [true, {
  "singleline": "never",
  "multiline": {
    "objects": "always",
    "arrays": "always",
    "functions": "never",
    "typeLiterals": "ignore"
  }
}]

Answer 1

You clearly have the rule enabled for multi-line objects:

"trailing-comma": [true, {
  "singleline": "never",
  "multiline": {
    "objects": "always",     // <==================
    "arrays": "always",
    "functions": "never",
    "typeLiterals": "ignore"
  }
}]

So...disable it by making that "never" (if you want to disallow commas there) or "ignore" (if you want to allow commas to be there or not, either way).