diff --git a/scripts/build.mjs b/scripts/build.mjs
index 4474c208..ed5b4e7d 100644
--- a/scripts/build.mjs
+++ b/scripts/build.mjs
@@ -9,11 +9,10 @@ import chalk from 'chalk';
 import merge from 'deepmerge';
 import chokidar from 'chokidar';
 import yargsParser from 'yargs-parser';
+import buildConfig from '../build.config.js';
 import compiler from './compiler.mjs';
 import randomColor from './randomColor.mjs';
 
-import buildConfig from '../build.config.js';
-
 const argv = yargsParser(process.argv.slice(2));
 
 const ESM_OUTPUT_DIR = 'es';
@@ -67,6 +66,9 @@ function getGlobalConfig() {
 
 async function getPkgConfig(config, pkgName) {
     const pkgConfigPath = path.join(getPkgPath(pkgName), CONFIG_FILE_NAME);
+    if (argv.watch) {
+        config.sourceMap = true;
+    }
     if (fs.existsSync(pkgConfigPath)) {
         const content = await import(process.platform === 'win32' ? `file://${pkgConfigPath}` : pkgConfigPath);
         const result = merge(config, content.default);
@@ -109,6 +111,9 @@ function transformFile(filePath, outputPath, config, log) {
         try {
             const code = fs.readFileSync(filePath, 'utf-8');
             const shortFilePath = genShortPath(filePath);
+            if (config.sourceMap) {
+                config.sourceFileName = filePath;
+            }
             const transformedCode = compiler(code, config);
 
             const type = config.target === 'browser' ? ESM_OUTPUT_DIR : NODE_CJS_OUTPUT_DIR;
diff --git a/scripts/compiler.mjs b/scripts/compiler.mjs
index 6c9e173a..70cb530e 100644
--- a/scripts/compiler.mjs
+++ b/scripts/compiler.mjs
@@ -8,7 +8,7 @@ function transform(code, options) {
     return result.code;
 }
 
-function transformNodeCode(code) {
+function transformNodeCode(code, config) {
     return transform(code, {
         presets: [
             [
@@ -19,6 +19,8 @@ function transformNodeCode(code) {
                 },
             ],
         ],
+        sourceFileName: config.sourceMap ? config.sourceFileName : undefined,
+        sourceMaps: config.sourceMap ? 'inline' : false,
     });
 }
 
@@ -41,7 +43,7 @@ function transformBrowserCode(code) {
 
 export default function compiler(code, config) {
     if (!config.target || config.target === 'node') {
-        return transformNodeCode(code);
+        return transformNodeCode(code, config);
     }
     if (config.target === 'browser') {
         return transformBrowserCode(code);