TSLint Rule: whitespace-before-colon

TSLint provides no means of controlling spaces before colon in object literals and destructuring assignments. whitespace.check-type checks only for space after colon, and typedef-whitespace works only for type definitions.

This rules determines if a space is required or not before the colon in object literals and destructuring assignments.

Related to palantir/tslint#991.

Usage

Install with NPM or Yarn to your dev dependencies:

npm install --save-dev tslint-whitespace-before-colon

and include it in your project's tslint.json file. You can do it either by adding the package name to extends field:

  "extends": [
    "tslint-whitespace-before-colon"
  ]

or by adding the package location to rulesDirectory field:

  "rulesDirectory": [
    "node_modules/tslint-whitespace-before-colon"
  ]

Both approaches are equivalent, use whichever suits your project the most.

Configuration

Rule expects a single string option indicating the required number of spaces before colon:

• "nospace" requires no space
• "onespace" requires exactly one space
• "space" requires one or more spaces

If none of the above is provided, the rule will have no effect.

Example configuration:

  "rules": {
    "whitespace-before-colon": [true, "nospace"]
  }

Note

If a newline character ("\n") is present, the rule validates regardless of the configured option, just as typedef-whitespace rule does.

License

MIT