typescript-plugin-add-type

A TypeScript Language Server Plugin to add the type to those variables that do not declare any. Sometimes is simply too hard to copy&paste with the mouse the type of a node from the tooltip of vscode and really necessary to add a type.

The refactor suggestion will only suggest to add the type when a identifier without explicit type is selected

• Editor agnostic - tested on Visual Studio Code and Atom but it should work on any TypeScript-aware editor

Demo

• 

How to use:

npm i --save-dev typescript-plugin-add-type

in your tsconfig.json, add the plugin:

{
  "compilerOptions": {
    ...
    "plugins": [{
        "name": "typescript-plugin-add-type"
    }]
    ...
  }
}

Make sure you have installed typescript in your project (npm i --save-dev typescript) the editor you are using uses that typescript and not another. For example, Visual Studio Code comes with its own typescript version, so I need to "Select TypeScript Version" of the workspace:

{
  // Specifies the folder path containing the tsserver and lib*.d.ts files to use.
  "typescript.tsdk": "node_modules/typescript/lib"
}

TODO/IDEAS

• generics / static types ?
• what about a tool that add all missing types to all named declarations in the entire sourcefile ?
• what about a tool that remove all the explicit types that can be removed with out introducing a compilation error ? (so code is cleaned)

TODO: test all examples:

// function f ()$TYPE {} // function()$TYPE {} // should not enter because of no name // method()$TYPE {} // class C { property1$TYPE = 2 } // class C {property1$TYPE = 'va'} // var a$TYPE = 2 // function(param1$TYPE, param2){} // each((c) $TYPE => true) // each((c$TYPE) => true)