Infer from usage codefix should work in JS

[ghost]

TypeScript Version: 2.7.0-dev.20171117

Code

function f(x) {
    return x + 1;
}

Expected behavior:

/** @param {number} x */
function f(x) {
    return x + 1;
}

Actual behavior:

No fix.

[ghost]

Similarly, we could add jsdoc annotations in fixAddMissingMember.ts for JS like we do for TS.
EDIT This is #20331 and #27615

[sandersn]

Fixed by #27610; I guess github doesn't use comments to auto-close bugs.