Flow type triggers space-infix-ops error

I know that eslint is not supporting flow types, but it seems that the space-infix-ops rule is assuming that between left and right side of an ExpressionPattern, there is only on Punctation which in the case of flow type is not true. (https://github.com/eslint/eslint/blob/master/lib/rules/space-infix-ops.js#L32)

example:

(foo: string = 'test') => {};

triggers:

 1:5  error  Infix operators must be spaced  space-infix-ops

What would be a proper way to fix this? I think this is something in the rule itself should be accounted for and it should ignore anything which belongs to left or right side instead of treating it as “something between left and right”.

refs babel/babel-eslint#226

eslint version: 1.10.3

[danez]

I would work on creating a PR for this now, but I’m not sure how to test it, as espree doesn’t support any typeannotation when parsing. Is there a way to workaround this? Or should i create the test in babel-eslint or include babel-eslint as devDependency?

[nzakas]

There’s some standardization now. The Identifier node now has a typeAnnotation property that indicates a type annotation is present (it’s null or undefined if there’s no type annotation). Using that, we should be able to make this rule skip the : that’s part of the type annotation.