fix: #4

Author: bigmeow

config/rollup.config.js

@@ -2,6 +2,7 @@
 
 import common from './rollup'
 import nodeResolve from '@rollup/plugin-node-resolve'
+import commonjs from '@rollup/plugin-commonjs'
 
 const isProd = process.env.NODE_ENV === 'production'
 export default {
@@ -12,13 +13,19 @@ export default {
     // 如果不同时使用 export 与 export default 可打开legacy
     // legacy: true,
     banner: common.banner
+    // sourcemap: isProd
   },
-  external: common.external,
+  // 小程序不支持包内require别的包，必须把别的包也一起打包进来
+  external: isProd ? [] : common.external,
   plugins: [
     nodeResolve({
       main: true,
       extensions: ['.ts', '.js']
     }),
+    commonjs({
+      include: /node_modules/,
+      transformMixedEsModules: true
+    }),
     common.getCompiler({
       tsconfigOverride: { compilerOptions: { declaration: true } },
       useTsconfigDeclarationDir: true