diff --git a/src/router/reg-exp-router/trie.ts b/src/router/reg-exp-router/trie.ts
index d7b146cf..39bf99f7 100644
--- a/src/router/reg-exp-router/trie.ts
+++ b/src/router/reg-exp-router/trie.ts
@@ -57,11 +57,11 @@ export class Trie {
     const paramReplacementMap: ReplacementMap = []
 
     regexp = regexp.replace(/#(\d+)|@(\d+)|\.\*\$/g, (_, handlerIndex, paramIndex) => {
-      if (typeof handlerIndex !== 'undefined') {
+      if (handlerIndex !== undefined) {
         indexReplacementMap[++captureIndex] = Number(handlerIndex)
         return '$()'
       }
-      if (typeof paramIndex !== 'undefined') {
+      if (paramIndex !== undefined) {
         paramReplacementMap[Number(paramIndex)] = ++captureIndex
         return ''
       }
diff --git a/src/utils/color.ts b/src/utils/color.ts
index 7e6d7b8b..522d3460 100644
--- a/src/utils/color.ts
+++ b/src/utils/color.ts
@@ -17,7 +17,7 @@ export function getColorEnabled(): boolean {
   const isNoColor =
     typeof Deno?.noColor === 'boolean'
       ? (Deno.noColor as boolean)
-      : typeof process !== 'undefined'
+      : process !== undefined
       ? // eslint-disable-next-line no-unsafe-optional-chaining
         'NO_COLOR' in process?.env
       : false