fix(alita): 修改直接导出函数式组件转化报错的bug

re #6

Author: ykforerlang

examples/HelloWorldExpo/src/a/MyFunComp2.js

@@ -0,0 +1,15 @@
+import React from 'react'
+import PropTypes from 'prop-types'
+import {View, Text, StyleSheet} from 'react-native'
+import styles from './styles';
+
+export default function MyFunComp({name, age}, {color}) {
+
+    return <View style={styles.item}>
+        <Text style={styles.itemText}>{name}{age}{color}</Text>
+    </View>
+}
+
+MyFunComp.contextTypes = {
+    color: PropTypes.string,
+}

src/basetran/handleMisc.js

@@ -17,7 +17,7 @@ const historyPrefixSet = new Set([
     'replace'
 ])
 
-export default function (ast) {
+export default function (ast, {isFuncComp}) {
     let leftIden = null
     traverse(ast, {
         exit: path => {
@@ -35,10 +35,12 @@ export default function (ast) {
              * const x = 1
              * export default x
              *
+             * 函数式组件在后续会被处理为class组件，这里不需要处理
              *
              */
 
-            if (path.type === 'ExportDefaultDeclaration'
+            if (!isFuncComp
+                && path.type === 'ExportDefaultDeclaration'
                 && path.node.declaration
                 && path.node.declaration.type === 'AssignmentExpression'
                 && path.node.declaration.left.type === 'Identifier'

src/basetran/index.js

@@ -12,9 +12,10 @@ import handleMisc from './handleMisc'
 import geneJS from './geneJS'
 import {geneCode} from "../util/uast";
 
-export default async function (ast, filepath, justTran) {
+export default async function (ast, filepath, justTran, isFuncComp) {
     const info = {
-        filepath
+        filepath,
+        isFuncComp
     }
 
     ast = handleMisc(ast, info)

src/struc/handleRF.js

@@ -15,6 +15,6 @@ export default async function (ast, filepath, isFuncComp, entryFilePath, isPageC
     const dirname = path.dirname(filepath)
     await fse.mkdirs(dirname)
 
-    await baseTran(ast, filepath, true)
+    await baseTran(ast, filepath, true, isFuncComp)
     await componentTran(ast, filepath, isFuncComp, entryFilePath, isPageComp, isStatelessComp)
 }