error.txt

: error TS2322: Type '() => void' is not assignable to type 'Ca│~               
llInterface'.                                                                   
  Type 'void' is not assignable to type 'number'.                               
                                                                                
/home/adza/work/ts-playground/node_modules/typescript/lib/tsc.js:2062           
            throw e;                                                            
            ^                                                                   
                                                                                
Error: Debug Failure. False expression.                                         
    at computePositionOfLineAndCharacter (/home/adza/work/ts-playground/node_mod
ules/typescript/lib/tsc.js:3752:22)                                             
    at Object.getPositionOfLineAndCharacter (/home/adza/work/ts-playground/node_
modules/typescript/lib/tsc.js:3742:16)                                          
    at Object.formatDiagnosticsWithColorAndContext (/home/adza/work/ts-playgroun
d/node_modules/typescript/lib/tsc.js:55575:59)                                  
    at reportDiagnosticWithColorAndContext (/home/adza/work/ts-playground/node_m
odules/typescript/lib/tsc.js:58771:25)                                          
    at reportDiagnostic (/home/adza/work/ts-playground/node_modules/typescript/l
ib/tsc.js:58733:9)                                                              
    at reportDiagnostics (/home/adza/work/ts-playground/node_modules/typescript/
lib/tsc.js:58738:13)                                                            
    at compileProgram (/home/adza/work/ts-playground/node_modules/typescript/lib
/tsc.js:59099:13)                                                               
    at compile (/home/adza/work/ts-playground/node_modules/typescript/lib/tsc.js
:59051:26)                                                                      
    at performCompilation (/home/adza/work/ts-playground/node_modules/typescript
/lib/tsc.js:58940:33)                                                           
    at Object.executeCommandLine (/home/adza/work/ts-playground/node_modules/typ
escript/lib/tsc.js:58883:9)                                                     
    at Object.<anonymous> (/home/adza/work/ts-playground/node_modules/typescript
/lib/tsc.js:59241:4)                                                            
    at Module._compile (module.js:569:30)                                       
    at Object.Module._extensions..js (module.js:580:10)                         
    at Module.load (module.js:503:32)                                           
    at tryModuleLoad (module.js:466:12)                                         
    at Function.Module._load (module.js:458:3)                                  
    at Module.require (module.js:513:17)                                        
    at require (internal/module.js:11:18)                                       
    at Object.<anonymous> (/home/adza/work/ts-playground/node_modules/typescript
/bin/tsc:2:1)                                                                   
    at Module._compile (module.js:569:30)                                       
    at Object.Module._extensions..js (module.js:580:10)                         
    at Module.load (module.js:503:32)                                           
    at tryModuleLoad (module.js:466:12)                                         
    at Function.Module._load (module.js:458:3)                                  
    at Function.Module.runMain (module.js:605:10)                               
    at startup (bootstrap_node.js:158:16)                                       
    at bootstrap_node.js:575:3                                                  
error Command failed with exit code 1.          

example.ts

interface CallInterface {
    ( a: string ): number;
}

const aFunction: CallInterface = () => {};


aFunction(2);

package.json

{
    "name": "ts-playground",
    "version": "0.0.1",
    "dependencies": {
        "tslint": "^5.7.0",
        "typescript": "^2.5.2"
    },
    "scripts": {
        "lint": "tslint -c tslint.json src/**/*/ts",
        "compile": "tsc",
        "watch": "tsc --watch"
    }
}

tsconfig.json

{
    "compilerOptions": {

        "pretty": true,


        "module": "es6",
        "moduleResolution": "node",
        "target": "es6",
        "declaration": true,
        "noEmitHelpers": true,


        "removeComments": false,
        "preserveConstEnums": true,

        "sourceMap": true,
        
        "outDir": "lib",

        "diagnostics": true,



        "noImplicitAny": true,
        "noImplicitThis": true,
        "strictNullChecks": true,
        "noImplicitReturns": true
    },
    "exclude": [
        "node_modules",
        "lib"
    ],
    "awesomeTypescriptLoaderOptions": {
        "useBabel": true
    }
}