Extract common type fields into one new type

[ArinCantCode]

Is this request related to a problem? Please describe.

I found myself having to extract common types into one base type, but because i have like 10 types in which not every field is in common it makes it very unpleasant to have to manually check if this field exists on every type.

  export interface Type1 {
    id: string;
    timestamp : number;
    block :number;
    platform : string;
    index :number;
    ...uncommon types
  }
  export interface Type2 {
    id: string;
    timestamp : number;
    block :number;
    platform : string;
    index :number;
    ...uncommon types
  }
  export interface Type3 {
    id: string;
    timestamp : number;
    block :number;
    platform : string;
    index :number;
    ...uncommon types
  }

ofc in reality this doesn't look so nice, fields are mixed together, file is long etc.

Describe the solution you'd like

Select all the types/interfaces and extract fields they have into new type/interface above or below it. Basic version of this feature could only extract from simple types that do not use & or extends

[nicoespeon]

I like this suggestion @ArinCantCode. We could indeed detect similar patterns and suggest extracting the common parts together like we do when you extract all occurrences of a variable.