I have installed `@types/jasmine` as a devDependency. 

My gulp task to compile my typescript is like so: 

```
gulp.task('compile:tests', ['compile:typescript', 'clean:tests'], function () {
    var project = ts.createProject('tsconfig.json', { typescript: typescript });

    var tsResult = gulp.src(['spec/**/*spec.ts'])
        .pipe(ts(project));

    return tsResult.js
        .pipe(gulp.dest('spec/'));
});

```

and my tsconfig.json

```
{
    "compilerOptions": {
        "target": "es6",
        "module": "commonjs",
        "moduleResolution": "node"
    },
    "exclude": [
        "node_modules"
    ]
}

```

but this results in the errors:

> 
> spec\linter.spec.ts(7,1): error TS2304: Cannot find name 'describe'.  
> 
>  spec\linter.spec.ts(8,3): error TS2304: Cannot find name 'it'.  
> 
>  spec\linter.spec.ts(17,5): error TS2304: Cannot find name 'expect'.  
> 
>  spec\linter.spec.ts(20,3): error TS2304: Cannot find name 'it'. 
> 
> 
> 

How can I get typescript (when used by gulp-typescript) to recognize the `@types/...` typings?