diff --git a/package.json b/package.json
index a204e9c0..7cf4f6bf 100644
--- a/package.json
+++ b/package.json
@@ -34,7 +34,7 @@
     "license-check": "jsgl --local ."
   },
   "engines": {
-    "node": ">=6"
+    "node": ">=8"
   },
   "keywords": [],
   "author": "Google Inc.",
@@ -77,7 +77,7 @@
     "typescript": "~3.3.0"
   },
   "peerDependencies": {
-    "typescript": "^2.7.1 || ^3.0.0"
+    "typescript": "^3.0.0"
   },
   "ava": {
     "require": [
diff --git a/src/cli.ts b/src/cli.ts
index cc59a54b..d6cfb825 100644
--- a/src/cli.ts
+++ b/src/cli.ts
@@ -97,7 +97,7 @@ async function run(verb: string, files: string[]): Promise<boolean> {
   // typescript module during init, since it might not exist.
   // See: https://github.com/google/ts-style/issues/48
   if (verb === 'init') {
-    return await init(options);
+    return init(options);
   }
 
   const lint: VerbFilesFunction = require('./lint').lint;
@@ -108,12 +108,9 @@ async function run(verb: string, files: string[]): Promise<boolean> {
       const passFormat = await format(options, files);
       return passLint && passFormat;
     case 'fix':
-      return (
-        (await lint(options, files, true)) &&
-        (await format(options, files, true))
-      );
+      return (await lint(options, files, true)) && format(options, files, true);
     case 'clean':
-      return await clean(options);
+      return clean(options);
     default:
       usage(`Unknown verb: ${verb}`);
       return false;
diff --git a/src/util.ts b/src/util.ts
index 209cfbe4..6d48fa74 100644
--- a/src/util.ts
+++ b/src/util.ts
@@ -48,7 +48,7 @@ export async function getTSConfig(
 ): Promise<ConfigFile> {
   customReadFilep = customReadFilep || readFilep;
   const readArr = new Set();
-  return await getBase('tsconfig.json', customReadFilep, readArr, rootDir);
+  return getBase('tsconfig.json', customReadFilep, readArr, rootDir);
 }
 
 /**
diff --git a/tslint.json b/tslint.json
index d2ebf632..0c0ef073 100644
--- a/tslint.json
+++ b/tslint.json
@@ -3,10 +3,18 @@
     "array-type": [true, "array-simple"],
     "arrow-return-shorthand": true,
     "ban": [true,
+      {"name": ["it", "skip"]},
+      {"name": ["it", "only"]},
+      {"name": ["it", "async", "skip"]},
+      {"name": ["it", "async", "only"]},
+      {"name": ["describe", "skip"]},
+      {"name": ["describe", "only"]},
       {"name": "parseInt", "message": "tsstyle#type-coercion"},
       {"name": "parseFloat", "message": "tsstyle#type-coercion"},
-      {"name": "Array", "message": "tsstyle#array-constructor"}
+      {"name": "Array", "message": "tsstyle#array-constructor"},
+      {"name": ["*", "innerText"], "message": "Use .textContent instead. tsstyle#browser-oddities"}
     ],
+    "ban-ts-ignore": true,
     "ban-types": [true,
       ["Object", "Use {} instead."],
       ["String", "Use 'string' instead."],
@@ -18,6 +26,7 @@
     "deprecation": true,
     "forin": true,
     "interface-name": [true, "never-prefix"],
+    "interface-over-type-literal": true,
     "jsdoc-format": true,
     "label-position": true,
     "member-access": [true, "no-public"],
@@ -34,6 +43,8 @@
     "no-namespace": [true, "allow-declarations"],
     "no-reference": true,
     "no-string-throw": true,
+    "no-return-await": true,
+    "no-unsafe-finally": true,
     "no-unused-expression": true,
     "no-var-keyword": true,
     "object-literal-shorthand": true,