Modify ESLint's config.

.eslintrc

@@ -1,6 +1,11 @@
 {
-    "extends": "mysticatea/nodejs",
+    "root": true,
+    "extends": [
+        "mysticatea",
+        "mysticatea/modules",
+        "mysticatea/node"
+    ],
     "rules": {
-        "require-jsdoc": 2
+        "node/shebang": [2, {"convertBinPath": ["", "src"]}]
     }
 }

src/lib/match-tasks.js

@@ -15,7 +15,7 @@ const CONVERT_MAP = {":": "/", "/": ":"};
  * @returns {string} The text which was swapped.
  */
 function swapColonAndSlash(s) {
-    return s.replace(COLON_OR_SLASH, (matched) => CONVERT_MAP[matched]);
+    return s.replace(COLON_OR_SLASH, matched => CONVERT_MAP[matched]);
 }
 
 /**

src/lib/run-task.js

@@ -70,11 +70,11 @@ export default function runTask(task, stdin, stdout, stderr, packageConfigOption
         if (stderrKind === "pipe") { cp.stderr.pipe(stderr); }
 
         // Register
-        cp.on("error", (err) => {
+        cp.on("error", err => {
             cp = null;
             reject(err);
         });
-        cp.on("close", (code) => {
+        cp.on("close", code => {
             cp = null;
             resolve({task, code});
         });

test/lib/.eslintrc

@@ -1,6 +1,9 @@
 {
-    "extends": "mysticatea/es5",
-    "env": {"node": true},
+    "root": true,
+    "extends": [
+        "mysticatea/es5",
+        "mysticatea/node"
+    ],
     "rules": {
         "no-console": 0
     }

test/pattern.js

@@ -64,15 +64,15 @@ describe("[pattern] npm-run-all should run matched tasks if gived glob like patt
             runAll("a")
                 .then(
                     () => assert(false, "should not match"),
-                    (err) => assert((/not found/i).test(err.message))
+                    err => assert((/not found/i).test(err.message))
                 )
         );
 
         it("command version", () =>
             command(["a"])
                 .then(
                     () => assert(false, "should not match"),
-                    (err) => assert((/not found/i).test(err.message))
+                    err => assert((/not found/i).test(err.message))
                 )
         );
     });