docs

Author: ruojianll

docs/en/migration/from-v3-to-v4.md

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+## Breaking changes
+### Output into new dist structure
+
+* Output ESM into dist/esm
+* Output CommonJS into dist/cjs
+
+If you use deprecated `vue-facing-decorator/dist/index-return-cons` and your ts config uses `moduleResolution` with `Node16`, it will be resolved correctly. Otherwise you need to change the path to `vue-facing-decorator/dist/esm/index-return-cons` or `vue-facing-decorator/dist/cjs/index-return-cons`.
+
+### Totally remove support for initialization class fields with this.xxx in class declaration
+
+```ts
+@Component
+class C extends Vue{
+    @Prop
+    prop!:string
+
+    method(){return ''}
+
+    field1 = this.prop //NOT SUPPORT
+
+    field2 = this.method()  //NOT SUPPORT
+}
+```

docs/zh-cn/migration/from-v3-to-v4.md

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+## 破坏性改变
+### 输出结构变化
+
+* 输出ESM格式到dist/esm
+* 输出CommonJS格式到dist/cjs
+
+如果你使用已废弃的`vue-facing-decorator/dist/index-return-cons`并且你的TS配置`moduleResolution`为`Node16`，这将没有影响。否则你需要将路径改变为`vue-facing-decorator/dist/esm/index-return-cons`或`vue-facing-decorator/dist/cjs/index-return-cons`。