fixed a few lint errros (#111)

Author: bestander

src/cli/commands/cache.js

@@ -14,8 +14,6 @@ import type Config from "../../config.js";
 import { MessageError } from "../../errors.js";
 import * as fs from "../../util/fs.js";
 
-let path = require("path");
-
 export function setFlags(commander: Object) {
   commander.usage("cache [clear | ls]");
 }
@@ -39,7 +37,7 @@ export async function run(
     throw new MessageError("TODO");
   }
 
-  if (cmd === "clear") {
+  if (cmd === "clear" && config.packagesRoot) {
     await fs.unlink(config.packagesRoot);
     reporter.success(`Cleared ${config.packagesRoot}`);
   }

src/util/child.js

@@ -13,6 +13,7 @@
 import * as constants from "../constants.js";
 import BlockingQueue from "./blocking-queue.js";
 import { promisify } from "./promise.js";
+import { MessageError } from "../errors.js";
 
 let child = require("child_process");