@coffeelint/cli/lib/rules/colon_assignment_spacing.js

Lint your CoffeeScript

(function() {
  var ColonAssignmentSpacing;

  module.exports = ColonAssignmentSpacing = (function() {
    class ColonAssignmentSpacing {
      lintToken(token, tokenApi) {
        var checkSpacing, isLeftSpaced, isRightSpaced, nextToken, previousToken, spaceRules;
        spaceRules = tokenApi.config[this.rule.name].spacing;
        previousToken = tokenApi.peek(-1);
        nextToken = tokenApi.peek(1);
        checkSpacing = function(direction) {
          var minDirection, spacing;
          spacing = (function() {
            switch (direction) {
              case 'left':
                return token[2].first_column - previousToken[2].last_column - 1;
              case 'right':
                return nextToken[2].first_column - token[2].first_column - 1;
            }
          })();
          // when spacing is negative, the neighboring token is a newline
          if (spacing < 0) {
            return true;
          } else {
            minDirection = parseInt(spaceRules['min_' + direction], 10);
            // if a minimal spacing is specified, only check that
            if (minDirection >= 0) {
              return spacing >= minDirection;
            } else {
              // otherwise check exact spacing
              return spacing === parseInt(spaceRules[direction], 10);
            }
          }
        };
        isLeftSpaced = checkSpacing('left');
        isRightSpaced = checkSpacing('right');
        if (token.jsxColon || isLeftSpaced && isRightSpaced) {
          return null;
        } else {
          return {
            token: token,
            context: `Incorrect spacing around column ${token[2].first_column}`
          };
        }
      }

    };

    ColonAssignmentSpacing.prototype.rule = {
      type: 'style',
      name: 'colon_assignment_spacing',
      level: 'ignore',
      message: 'Colon assignment without proper spacing',
      spacing: {
        left: 0,
        right: 0
      },
      description: `<p>This rule checks to see that there is spacing before and
after the colon in a colon assignment (i.e., classes, objects).
The spacing amount is specified by
spacing.left and spacing.right, respectively.
A zero value means no spacing required.
</p>
<pre><code>
#
# If spacing.left and spacing.right is 1
#

# Doesn't throw an error
object = {spacing : true}
class Dog
  canBark : true

# Throws an error
object = {spacing: true}
class Cat
  canBark: false
</code></pre>`
    };

    ColonAssignmentSpacing.prototype.tokens = [':'];

    return ColonAssignmentSpacing;

  }).call(this);

}).call(this);