TSLint Config in VS Code

Question

I'm trying to configure the max line length (among other settings) for TS Lint in VS code but no matter what changes I make it doesn't 'take'.

So, the first strange thing is that VS code's TS Lint error for max line length says I've exceeded the 140 character limit but in the various config files I've found it only ever mentions 120 characters as the default.

I've changed this to 200 characters, disabled / enabled the extension but still get the 140 character warning. Does anyone know where and how to configure this setting? The documentation online is clear enough but I don't appear to have a tslint.json file and within the node_modules => tslint => lib => rules folder the setting is 120 and changing it makes no difference.

Answer 1

Edit 2020-09-30

Microsoft deprectaded the old plugin and released a newer, completely rewritten version with additional features here.

For the new plugin the setting "tslint.enable": true does not exists and is not needed anymore.

Original Answer

You need to create a tslint.json (in your workspace root) and set something like this to disable the maximum line length:

{    
    "defaultSeverity": "error",
    "extends": [
        "tslint:recommended"
    ],
    "jsRules": {},
    "rules": {
        "max-line-length": [false]
    },
    "rulesDirectory": []
}

Furthermore, ensure that the following options are set in the in the vscode user settings (settings.json):

"tslint.configFile": "./path/to/tslint/relative/from/workspaceroot/tslint.json",
"tslint.enable": true

The tslint.configFile option can be empty if the file is in the root directory of your workspace.
Further rules can be found here.