diff --git a/src/lib/apis/index.ts b/src/lib/apis/index.ts
index ca5bad0061..86f4165c30 100644
--- a/src/lib/apis/index.ts
+++ b/src/lib/apis/index.ts
@@ -465,7 +465,7 @@ export const executeToolServer = async (
 			...(token && { authorization: `Bearer ${token}` })
 		};
 
-		let requestOptions: RequestInit = {
+		const requestOptions: RequestInit = {
 			method: httpMethod.toUpperCase(),
 			headers
 		};
@@ -818,7 +818,7 @@ export const generateQueries = async (
 	model: string,
 	messages: object[],
 	prompt: string,
-	type?: string = 'web_search'
+	type: string = 'web_search'
 ) => {
 	let error = null;
 
@@ -1014,7 +1014,7 @@ export const getPipelinesList = async (token: string = '') => {
 		throw error;
 	}
 
-	let pipelines = res?.data ?? [];
+	const pipelines = res?.data ?? [];
 	return pipelines;
 };
 
@@ -1157,7 +1157,7 @@ export const getPipelines = async (token: string, urlIdx?: string) => {
 		throw error;
 	}
 
-	let pipelines = res?.data ?? [];
+	const pipelines = res?.data ?? [];
 	return pipelines;
 };
 
diff --git a/src/lib/apis/ollama/index.ts b/src/lib/apis/ollama/index.ts
index 85e08ad4e1..e1d488cc68 100644
--- a/src/lib/apis/ollama/index.ts
+++ b/src/lib/apis/ollama/index.ts
@@ -331,7 +331,7 @@ export const generateTextCompletion = async (token: string = '', model: string,
 };
 
 export const generateChatCompletion = async (token: string = '', body: object) => {
-	let controller = new AbortController();
+	const controller = new AbortController();
 	let error = null;
 
 	const res = await fetch(`${OLLAMA_API_BASE_URL}/api/chat`, {
diff --git a/src/lib/apis/users/index.ts b/src/lib/apis/users/index.ts
index 68b5e58d82..282b5bdca8 100644
--- a/src/lib/apis/users/index.ts
+++ b/src/lib/apis/users/index.ts
@@ -126,7 +126,7 @@ export const getUsers = async (
 	let error = null;
 	let res = null;
 
-	let searchParams = new URLSearchParams();
+	const searchParams = new URLSearchParams();
 
 	searchParams.set('page', `${page}`);
 
diff --git a/src/lib/i18n/index.ts b/src/lib/i18n/index.ts
index 4156e68e91..e5c2d183b2 100644
--- a/src/lib/i18n/index.ts
+++ b/src/lib/i18n/index.ts
@@ -38,10 +38,10 @@ const createIsLoadingStore = (i18n: i18nType) => {
 };
 
 export const initI18n = (defaultLocale?: string | undefined) => {
-	let detectionOrder = defaultLocale
+	const detectionOrder = defaultLocale
 		? ['querystring', 'localStorage']
 		: ['querystring', 'localStorage', 'navigator'];
-	let fallbackDefaultLocale = defaultLocale ? [defaultLocale] : ['en-US'];
+	const fallbackDefaultLocale = defaultLocale ? [defaultLocale] : ['en-US'];
 
 	const loadResource = (language: string, namespace: string) =>
 		import(`./locales/${language}/${namespace}.json`);
diff --git a/src/lib/utils/characters/index.ts b/src/lib/utils/characters/index.ts
index af3436693a..dff08e66fc 100644
--- a/src/lib/utils/characters/index.ts
+++ b/src/lib/utils/characters/index.ts
@@ -74,15 +74,15 @@ const readPngChunks = (data) => {
 
 	if (!isValidPng) throw new Error('Invalid PNG file');
 
-	let chunks = [];
+	const chunks = [];
 	let offset = 8; // Skip PNG signature
 
 	while (offset < data.length) {
-		let length =
+		const length =
 			(data[offset] << 24) | (data[offset + 1] << 16) | (data[offset + 2] << 8) | data[offset + 3];
-		let type = String.fromCharCode.apply(null, data.slice(offset + 4, offset + 8));
-		let chunkData = data.slice(offset + 8, offset + 8 + length);
-		let crc =
+		const type = String.fromCharCode.apply(null, data.slice(offset + 4, offset + 8));
+		const chunkData = data.slice(offset + 8, offset + 8 + length);
+		const crc =
 			(data[offset + 8 + length] << 24) |
 			(data[offset + 8 + length + 1] << 16) |
 			(data[offset + 8 + length + 2] << 8) |
diff --git a/src/lib/utils/marked/katex-extension.ts b/src/lib/utils/marked/katex-extension.ts
index 9e864ca185..8d7d0dc87d 100644
--- a/src/lib/utils/marked/katex-extension.ts
+++ b/src/lib/utils/marked/katex-extension.ts
@@ -23,8 +23,8 @@ const ALLOWED_SURROUNDING_CHARS =
 // const inlineRule = /^(\${1,2})(?!\$)((?:\\.|[^\\\n])*?(?:\\.|[^\\\n\$]))\1(?=[\s?!\.,:？！。，：]|$)/;
 // const blockRule = /^(\${1,2})\n((?:\\[^]|[^\\])+?)\n\1(?:\n|$)/;
 
-let inlinePatterns = [];
-let blockPatterns = [];
+const inlinePatterns = [];
+const blockPatterns = [];
 
 function escapeRegex(string) {
 	return string.replace(/[-\/\\^$*+?.()|[\]{}]/g, '\\$&');
@@ -69,7 +69,7 @@ export default function (options = {}) {
 }
 
 function katexStart(src, displayMode: boolean) {
-	let ruleReg = displayMode ? blockRule : inlineRule;
+	const ruleReg = displayMode ? blockRule : inlineRule;
 
 	let indexSrc = src;
 
@@ -78,7 +78,7 @@ function katexStart(src, displayMode: boolean) {
 		let startIndex = -1;
 		let startDelimiter = '';
 		let endDelimiter = '';
-		for (let delimiter of DELIMITER_LIST) {
+		for (const delimiter of DELIMITER_LIST) {
 			if (delimiter.display !== displayMode) {
 				continue;
 			}
@@ -115,8 +115,8 @@ function katexStart(src, displayMode: boolean) {
 }
 
 function katexTokenizer(src, tokens, displayMode: boolean) {
-	let ruleReg = displayMode ? blockRule : inlineRule;
-	let type = displayMode ? 'blockKatex' : 'inlineKatex';
+	const ruleReg = displayMode ? blockRule : inlineRule;
+	const type = displayMode ? 'blockKatex' : 'inlineKatex';
 
 	const match = src.match(ruleReg);
 
diff --git a/src/lib/workers/pyodide.worker.ts b/src/lib/workers/pyodide.worker.ts
index 09fb0e1f34..221effca5e 100644
--- a/src/lib/workers/pyodide.worker.ts
+++ b/src/lib/workers/pyodide.worker.ts
@@ -40,7 +40,7 @@ async function loadPyodideAndPackages(packages: string[] = []) {
 		packages: ['micropip']
 	});
 
-	let mountDir = '/mnt';
+	const mountDir = '/mnt';
 	self.pyodide.FS.mkdirTree(mountDir);
 	// self.pyodide.FS.mount(self.pyodide.FS.filesystems.IDBFS, {}, mountDir);