diff --git a/packages/build-scripts/CHANGELOG.md b/packages/build-scripts/CHANGELOG.md
index 299adad..fe860de 100644
--- a/packages/build-scripts/CHANGELOG.md
+++ b/packages/build-scripts/CHANGELOG.md
@@ -1,5 +1,12 @@
 # Changelog
 
+## 1.2.0
+
+- [feat] auto load config of `build.config.(js|ts)`
+- [fix] exit process when config is not found
+- [chore] upgrade version of esbuild (up to `^0.13.12`)
+- [chore] optimize message, add verbose message when modify user config
+
 ## 1.1.2
 
 - [fix] missing type of hasRegistration
diff --git a/packages/build-scripts/package.json b/packages/build-scripts/package.json
index 373ee78..2eb5eaf 100644
--- a/packages/build-scripts/package.json
+++ b/packages/build-scripts/package.json
@@ -1,6 +1,6 @@
 {
   "name": "build-scripts",
-  "version": "1.1.2",
+  "version": "1.2.0",
   "license": "MIT",
   "description": "scripts core",
   "main": "lib/index.js",
@@ -16,7 +16,7 @@
     "build": "tsc",
     "prepublishOnly": "npm run build",
     "start": "tsc -w",
-    "test": "jest"
+    "test": "jest --runInBand"
   },
   "engines": {
     "node": ">=8.6.0",
@@ -34,7 +34,8 @@
     "commander": "^2.19.0",
     "deepmerge": "^4.0.0",
     "detect-port": "^1.3.0",
-    "esbuild": "^0.12.16",
+    "esbuild": "^0.13.2",
+    "fast-glob": "^3.2.7",
     "fs-extra": "^8.1.0",
     "inquirer": "^6.5.1",
     "json5": "^2.1.3",
diff --git a/packages/build-scripts/src/core/Context.ts b/packages/build-scripts/src/core/Context.ts
index 6ed8cc0..f11d752 100644
--- a/packages/build-scripts/src/core/Context.ts
+++ b/packages/build-scripts/src/core/Context.ts
@@ -5,6 +5,7 @@ import webpack, { MultiStats } from 'webpack';
 import { Logger } from 'npmlog';
 import { AggregatedResult } from '@jest/test-result';
 import { GlobalConfig } from '@jest/types/build/Config';
+import * as fg from 'fast-glob';
 import type WebpackDevServer from 'webpack-dev-server';
 import {
   IHash,
@@ -25,7 +26,7 @@ import deepmerge = require('deepmerge');
 import log = require('../utils/log');
 
 const PKG_FILE = 'package.json';
-const USER_CONFIG_FILE = 'build.json';
+const USER_CONFIG_FILE = ['build.json', 'build.config.(js|ts)'];
 const PLUGIN_CONTEXT_KEY = [
   'command' as 'command',
   'commandArgs' as 'commandArgs',
@@ -466,22 +467,29 @@ class Context {
         ? config
         : path.resolve(this.rootDir, config);
     } else {
-      configPath = path.resolve(this.rootDir, USER_CONFIG_FILE);
+      const [defaultUserConfig] = await fg(USER_CONFIG_FILE, { cwd: this.rootDir, absolute: true });
+      configPath = defaultUserConfig;
     }
     let userConfig: IUserConfig = {
       plugins: [],
     };
-    if (fs.existsSync(configPath)) {
+    if (configPath && fs.existsSync(configPath)) {
       try {
         userConfig = await loadConfig(configPath, log);
       } catch (err) {
         log.info(
           'CONFIG',
-          `Fail to load config file ${configPath}, use default config instead`,
+          `Fail to load config file ${configPath}`,
         );
         log.error('CONFIG', err.stack || err.toString());
         process.exit(1);
       }
+    } else {
+      log.error(
+        'CONFIG',
+        `config file${`(${configPath})` || ''} is not exist`,
+      );
+      process.exit(1);
     }
 
     return this.mergeModeConfig(userConfig);
@@ -643,9 +651,10 @@ class Context {
       const modifiedValue = configKey(this.userConfig);
       if (_.isPlainObject(modifiedValue)) {
         if (Object.prototype.hasOwnProperty.call(modifiedValue, 'plugins')) {
-          log.warn('[waring]', errorMsg);
+          // remove plugins while it is not support to be modified
+          log.verbose('[modifyUserConfig]', 'delete plugins of user config while it is not support to be modified');
+          delete modifiedValue.plugins;
         }
-        delete modifiedValue.plugins;
         Object.keys(modifiedValue).forEach(modifiedConfigKey => {
           const originalValue = this.userConfig[modifiedConfigKey];
           this.userConfig[modifiedConfigKey] = mergeInDeep ? mergeConfig<JsonValue>(originalValue, modifiedValue[modifiedConfigKey]) : modifiedValue[modifiedConfigKey] ;
diff --git a/packages/build-scripts/test/configFiles.test.ts b/packages/build-scripts/test/configFiles.test.ts
new file mode 100644
index 0000000..4a8cf02
--- /dev/null
+++ b/packages/build-scripts/test/configFiles.test.ts
@@ -0,0 +1,41 @@
+import Context from '../src/core/Context'
+import path = require('path')
+
+describe('load js config', () => {
+  const context = new Context({
+    args: {},
+    command: 'start',
+    rootDir: path.join(__dirname, 'fixtures/jsConfig/')
+  });
+
+  it('combine basic config', async () => {
+    await context.resolveConfig();
+    expect(context.userConfig.entry).toEqual('src/index');
+  });
+});
+
+describe('load ts config', () => {
+  const context = new Context({
+    args: {},
+    command: 'start',
+    rootDir: path.join(__dirname, 'fixtures/tsConfig/')
+  });
+
+  it('combine basic config', async () => {
+    await context.resolveConfig();
+    expect(context.userConfig.entry).toEqual('src/index');
+  });
+});
+
+describe('load mix config', () => {
+  const context = new Context({
+    args: {},
+    command: 'start',
+    rootDir: path.join(__dirname, 'fixtures/mixConfig/')
+  });
+
+  it('combine basic config', async () => {
+    await context.resolveConfig();
+    expect(context.userConfig.entry).toEqual('src/index.ts');
+  });
+});
\ No newline at end of file
diff --git a/packages/build-scripts/test/fixtures/jsConfig/build.config.js b/packages/build-scripts/test/fixtures/jsConfig/build.config.js
new file mode 100644
index 0000000..bf6873f
--- /dev/null
+++ b/packages/build-scripts/test/fixtures/jsConfig/build.config.js
@@ -0,0 +1,3 @@
+module.exports = {
+  entry: 'src/index'
+};
\ No newline at end of file
diff --git a/packages/build-scripts/test/fixtures/mixConfig/build.config.js b/packages/build-scripts/test/fixtures/mixConfig/build.config.js
new file mode 100644
index 0000000..33e524a
--- /dev/null
+++ b/packages/build-scripts/test/fixtures/mixConfig/build.config.js
@@ -0,0 +1,3 @@
+module.exports = {
+  entry: 'src/index.js'
+};
\ No newline at end of file
diff --git a/packages/build-scripts/test/fixtures/mixConfig/build.json b/packages/build-scripts/test/fixtures/mixConfig/build.json
new file mode 100644
index 0000000..e8ba052
--- /dev/null
+++ b/packages/build-scripts/test/fixtures/mixConfig/build.json
@@ -0,0 +1,3 @@
+{
+  "entry": "src/index.ts"
+}
\ No newline at end of file
diff --git a/packages/build-scripts/test/fixtures/tsConfig/build.config.ts b/packages/build-scripts/test/fixtures/tsConfig/build.config.ts
new file mode 100644
index 0000000..7a03529
--- /dev/null
+++ b/packages/build-scripts/test/fixtures/tsConfig/build.config.ts
@@ -0,0 +1,9 @@
+interface Config {
+  entry: string;
+}
+
+const config: Config = {
+  entry: 'src/index',
+};
+
+export default config;
\ No newline at end of file