Fix eslint warnings and small clean ups (denoland/deno_std#339)

Original: https://github.com/denoland/deno_std/commit/95ab4e2a3c8ac5fd7a1175567848ba7c2161b9e3

4 files changed, 6 insertions, 5 deletions

diff --git a/fs/README.md b/fs/README.md
index ad02199cc..b80cef7b8 100644
--- a/fs/README.md
+++ b/fs/README.md
@@ -31,7 +31,7 @@ ensureDir("./bar"); // returns a promise
 ensureDirSync("./ensureDirSync"); // void
 ```
 
-### ensure_file
+### ensureFile
 
 Ensures that the file exists.
 If the file that is requested to be created is in directories
diff --git a/prettier/main_test.ts b/prettier/main_test.ts
index 10ad79e36..3d5d54d66 100644
--- a/prettier/main_test.ts
+++ b/prettier/main_test.ts
@@ -107,7 +107,8 @@ test(async function testPrettierOptions() {
   const file2 = join(testdata, "opts", "2.ts");
   const file3 = join(testdata, "opts", "3.md");
 
-  const getSourceCode = async f => decoder.decode(await Deno.readFile(f));
+  const getSourceCode = async (f: string): Promise<string> =>
+    decoder.decode(await Deno.readFile(f));
 
   await run([...cmd, "--no-semi", file0]);
   assertEquals(
diff --git a/testing/main.ts b/testing/main.ts
index 64d7e597e..838266f4b 100644
--- a/testing/main.ts
+++ b/testing/main.ts
@@ -1,7 +1,7 @@
 // Copyright 2018-2019 the Deno authors. All rights reserved. MIT license.
 import { runTests } from "./mod.ts";
 
-async function main() {
+async function main(): Promise<void> {
   // Testing entire test suite serially
   await runTests();
 }
diff --git a/toml/parser.ts b/toml/parser.ts
index a7dd97750..c29f5a761 100644
--- a/toml/parser.ts
+++ b/toml/parser.ts
@@ -1,5 +1,6 @@
 // Copyright 2018-2019 the Deno authors. All rights reserved. MIT license.
 import { existsSync } from "../fs/exists.ts";
+import { readFileStrSync } from "../fs/read_file_str.ts";
 import { deepAssign } from "../util/deep_assign.ts";
 import { pad } from "../strings/pad.ts";
 
@@ -542,7 +543,6 @@ export function parseFile(filePath: string): object {
   if (!existsSync(filePath)) {
     throw new Error("File not found");
   }
-  const decoder = new TextDecoder();
-  const strFile = decoder.decode(Deno.readFileSync(filePath));
+  const strFile = readFileStrSync(filePath);
   return parse(strFile);
 }