Error: The last line is missing a trailing comma

I'm struggling to understand why my tslint insists on having a trailing comma at the end of the last line in the objects. Is there a way to configure the ignore rule for the last line of objects? Appreciate any help!

For example:

  settings = {
    setting1: "value1", // accepted
    setting2: "value2", // accepted
    setting3: true // error: [tslint] Missing trailing comma (trailing-comma)

  }

The current configuration for trailing-comma in my tsconfig.json file is as follows:

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

Answer №1

It is evident that you have activated the rule for multi-line objects:

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

Therefore, to deactivate it, change that to "never" (if you wish to prohibit commas there) or "ignore" (if you prefer to allow commas to remain optional in that position).

Answer №2

For this issue in my code, I made the necessary adjustments in my tslint.json file like so:

"rules": { "trailing-comma": false }

Answer №3

Adhering to the practice of including a trailing comma in every line, even the last one, can help minimize the occurrence of merge conflicts, despite its unconventional appearance.

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