12 files changed, 18 insertions, 15 deletions
diff --git a/std/node/_fs/_fs_access.ts b/std/node/_fs/_fs_access.ts
index ee93c4c7f..79e4ca96d 100644
--- a/std/node/_fs/_fs_access.ts
+++ b/std/node/_fs/_fs_access.ts
@@ -1,6 +1,6 @@
 // Copyright 2018-2020 the Deno authors. All rights reserved. MIT license.
 
-import { CallbackWithError } from "./_fs_common.ts";
+import type { CallbackWithError } from "./_fs_common.ts";
 import { notImplemented } from "../_utils.ts";
 
 /** Revist once https://github.com/denoland/deno/issues/4017 lands */
diff --git a/std/node/_fs/_fs_chmod.ts b/std/node/_fs/_fs_chmod.ts
index b1079e0a1..844afd21d 100644
--- a/std/node/_fs/_fs_chmod.ts
+++ b/std/node/_fs/_fs_chmod.ts
@@ -1,6 +1,6 @@
 // Copyright 2018-2020 the Deno authors. All rights reserved. MIT license.
 
-import { CallbackWithError } from "./_fs_common.ts";
+import type { CallbackWithError } from "./_fs_common.ts";
 import { fromFileUrl } from "../path.ts";
 
 const allowedModes = /^[0-7]{3}/;
diff --git a/std/node/_fs/_fs_chown.ts b/std/node/_fs/_fs_chown.ts
index cd1973b1f..56068ef73 100644
--- a/std/node/_fs/_fs_chown.ts
+++ b/std/node/_fs/_fs_chown.ts
@@ -1,6 +1,6 @@
 // Copyright 2018-2020 the Deno authors. All rights reserved. MIT license.
 
-import { CallbackWithError } from "./_fs_common.ts";
+import type { CallbackWithError } from "./_fs_common.ts";
 import { fromFileUrl } from "../path.ts";
 
 /**
diff --git a/std/node/_fs/_fs_close.ts b/std/node/_fs/_fs_close.ts
index cdd815ad9..add6f6663 100644
--- a/std/node/_fs/_fs_close.ts
+++ b/std/node/_fs/_fs_close.ts
@@ -1,6 +1,6 @@
 // Copyright 2018-2020 the Deno authors. All rights reserved. MIT license.
 
-import { CallbackWithError } from "./_fs_common.ts";
+import type { CallbackWithError } from "./_fs_common.ts";
 
 export function close(fd: number, callback: CallbackWithError): void {
   queueMicrotask(() => {
diff --git a/std/node/_fs/_fs_copy.ts b/std/node/_fs/_fs_copy.ts
index 26d9a8c9a..72f43d18f 100644
--- a/std/node/_fs/_fs_copy.ts
+++ b/std/node/_fs/_fs_copy.ts
@@ -1,6 +1,6 @@
 // Copyright 2018-2020 the Deno authors. All rights reserved. MIT license.
 
-import { CallbackWithError } from "./_fs_common.ts";
+import type { CallbackWithError } from "./_fs_common.ts";
 import { fromFileUrl } from "../path.ts";
 
 export function copyFile(
diff --git a/std/node/_fs/_fs_dir_test.ts b/std/node/_fs/_fs_dir_test.ts
index e89912772..2d2d5f585 100644
--- a/std/node/_fs/_fs_dir_test.ts
+++ b/std/node/_fs/_fs_dir_test.ts
@@ -1,6 +1,6 @@
 import { assert, assertEquals, fail } from "../../testing/asserts.ts";
 import Dir from "./_fs_dir.ts";
-import Dirent from "./_fs_dirent.ts";
+import type Dirent from "./_fs_dirent.ts";
 
 Deno.test({
   name: "Closing current directory with callback is successful",
diff --git a/std/node/_fs/_fs_link.ts b/std/node/_fs/_fs_link.ts
index 50916a7ba..df08e13b1 100644
--- a/std/node/_fs/_fs_link.ts
+++ b/std/node/_fs/_fs_link.ts
@@ -1,6 +1,6 @@
 // Copyright 2018-2020 the Deno authors. All rights reserved. MIT license.
 
-import { CallbackWithError } from "./_fs_common.ts";
+import type { CallbackWithError } from "./_fs_common.ts";
 import { fromFileUrl } from "../path.ts";
 
 /**
diff --git a/std/node/_fs/_fs_mkdir.ts b/std/node/_fs/_fs_mkdir.ts
index a65db8dba..8578f4653 100644
--- a/std/node/_fs/_fs_mkdir.ts
+++ b/std/node/_fs/_fs_mkdir.ts
@@ -1,5 +1,5 @@
 // Copyright 2018-2020 the Deno authors. All rights reserved. MIT license.
-import { CallbackWithError } from "./_fs_common.ts";
+import type { CallbackWithError } from "./_fs_common.ts";
 import { fromFileUrl } from "../path.ts";
 
 /**
@@ -31,10 +31,11 @@ export function mkdir(
     if (options.recursive !== undefined) recursive = options.recursive;
     if (options.mode !== undefined) mode = options.mode;
   }
-  if (typeof recursive !== "boolean")
+  if (typeof recursive !== "boolean") {
     throw new Deno.errors.InvalidData(
       "invalid recursive option , must be a boolean"
     );
+  }
   Deno.mkdir(path, { recursive, mode })
     .then(() => {
       if (typeof callback === "function") {
@@ -61,10 +62,11 @@ export function mkdirSync(path: string | URL, options?: MkdirOptions): void {
     if (options.recursive !== undefined) recursive = options.recursive;
     if (options.mode !== undefined) mode = options.mode;
   }
-  if (typeof recursive !== "boolean")
+  if (typeof recursive !== "boolean") {
     throw new Deno.errors.InvalidData(
       "invalid recursive option , must be a boolean"
     );
+  }
 
   Deno.mkdirSync(path, { recursive, mode });
 }
diff --git a/std/node/_fs/_fs_writeFile_test.ts b/std/node/_fs/_fs_writeFile_test.ts
index 3959ad219..015ed6553 100644
--- a/std/node/_fs/_fs_writeFile_test.ts
+++ b/std/node/_fs/_fs_writeFile_test.ts
@@ -6,7 +6,7 @@ import {
   assertThrows,
 } from "../../testing/asserts.ts";
 import { writeFile, writeFileSync } from "./_fs_writeFile.ts";
-import { TextEncodings } from "./_fs_common.ts";
+import type { TextEncodings } from "./_fs_common.ts";
 import * as path from "../../path/mod.ts";
 
 const testDataDir = path.resolve(path.join("node", "_fs", "testdata"));
diff --git a/std/node/_fs/promises/_fs_readFile.ts b/std/node/_fs/promises/_fs_readFile.ts
index 83ef9ac50..8677e05cd 100644
--- a/std/node/_fs/promises/_fs_readFile.ts
+++ b/std/node/_fs/promises/_fs_readFile.ts
@@ -1,5 +1,5 @@
 // Copyright 2018-2020 the Deno authors. All rights reserved. MIT license.
-import {
+import type {
   FileOptionsArgument,
   BinaryOptionsArgument,
   TextOptionsArgument,
@@ -21,8 +21,9 @@ export function readFile(
   return new Promise((resolve, reject) => {
     readFileCallback(path, options, (err, data): void => {
       if (err) return reject(err);
-      if (data == null)
+      if (data == null) {
         return reject(new Error("Invalid state: data missing, but no error"));
+      }
       resolve(data);
     });
   });
diff --git a/std/node/_fs/promises/_fs_writeFile.ts b/std/node/_fs/promises/_fs_writeFile.ts
index 4f7c39a6a..48b9bf0ea 100644
--- a/std/node/_fs/promises/_fs_writeFile.ts
+++ b/std/node/_fs/promises/_fs_writeFile.ts
@@ -1,5 +1,5 @@
 // Copyright 2018-2020 the Deno authors. All rights reserved. MIT license.
-import { Encodings, WriteFileOptions } from "../_fs_common.ts";
+import type { Encodings, WriteFileOptions } from "../_fs_common.ts";
 
 import { writeFile as writeFileCallback } from "../_fs_writeFile.ts";
 
diff --git a/std/node/_fs/promises/_fs_writeFile_test.ts b/std/node/_fs/promises/_fs_writeFile_test.ts
index 8f6ef0842..6901fff22 100644
--- a/std/node/_fs/promises/_fs_writeFile_test.ts
+++ b/std/node/_fs/promises/_fs_writeFile_test.ts
@@ -6,7 +6,7 @@ import {
   assertThrowsAsync,
 } from "../../../testing/asserts.ts";
 import { writeFile } from "./_fs_writeFile.ts";
-import { TextEncodings } from "../_fs_common.ts";
+import type { TextEncodings } from "../_fs_common.ts";
 
 const decoder = new TextDecoder("utf-8");