Add a rule "ensure-named-export"

[ggarek]

Rule Proposal

Using ensure-named-export one can assert that a module has named export named over the file name.

Example

// tslint.json
...
    "rules": {
        "ensure-named-export": [true, "camelCase"]
    }
...

// goodModule.ts -> lint OK
function goodModule() {
    return 1;
}

export const goodModule;

// badModule.ts -> lint FAIL
export default function f() {
    return 1;
}

export const a = 2;

function f2() {
    return null;
}

export const f2;

export const c = 1, d = 2;

Implementation

the repo | the rule

[JoshuaKGoldberg]

Good idea! This also happens to exist in tslint-microsoft-contrib as export-name. See #1142 for discussion on bringing those rules into here.