This issue was initially reported here:eslint/typescript-eslint-parser#458

What version of TypeScript are you using?
2.7.1

What version oftypescript-eslint-parser are you using?
14.0.0

What code were you trying to parse?

constregistration=(state:RegistrationStoreState=initialState,action:{type:string;data:Object;error:Object;})=>{...}

What did you expect to happen?
To see clear worskpace without warning

What happened?

I see warning[eslint] Expected indentation of 2 spaces but found 4. (indent)
And only when I format this code in this way:

const registration = (  state: RegistrationStoreState = initialState,  action: {  type: string;  data: Object;  error: Object;  }) => {...}

I don't see warnings.