feat: support jsxAttribute

Author: zhiyuanzmj

README.md

@@ -168,6 +168,12 @@ defineExpose$({
 defineExpose({
   base64: $$(base64),
 })
+
+let compRef = $useRef()
+defineRender(<Comp ref$={compRef} />)
+// convert to:
+let compRef = $(useRef())
+defineRender(<Comp ref={$$(compRef)} />)
 </script>
 ```
 

playground/src/App.vue

@@ -1,5 +1,5 @@
-<script setup lang="ts">
-import { inject, provide, toRefs, watch } from 'vue'
+<script setup lang="tsx">
+import { type Ref, inject, provide, toRefs, watch } from 'vue'
 import { useBase64 } from '@vueuse/core'
 import { useUserStore } from '../store/user'
 
@@ -21,6 +21,10 @@ const stop = watch$(base64, () => {
 defineExpose$({
   base64,
 })
+
+const title = $ref('title')
+const Comp = ({ title }: { title: Ref<string> }) => <div>{title.value}</div>
+const Render = <Comp title$={title} />
 </script>
 
 <template>

src/index.ts

@@ -105,24 +105,34 @@ function transformReactivityFunction(
         if (node.type === 'TSNonNullExpression') {
           node = node.expression
         }
-        if (node.type !== 'CallExpression') return
+        if (node.type === 'CallExpression') {
+          if (
+            parent?.type === 'VariableDeclarator' &&
+            new RegExp(`^\\$(?!(\\$|${ignore.join('|')})?$)`).test(
+              s.sliceNode(node.callee, { offset }),
+            )
+          ) {
+            s.appendRight(node.callee.start! + offset + 1, '(')
+            s.appendRight(node.end! + offset, ')')
+          }
 
-        if (
-          parent?.type === 'VariableDeclarator' &&
-          new RegExp(`^\\$(?!(\\$|${ignore.join('|')})?$)`).test(
-            s.sliceNode(node.callee, { offset }),
-          )
-        ) {
-          s.appendRight(node.callee.start! + offset + 1, '(')
-          s.appendRight(node.end! + offset, ')')
-        }
+          if (/(?<!^(\$)?)\$$/.test(s.sliceNode(node.callee, { offset }))) {
+            s.remove(node.callee.end! + offset - 1, node.callee.end! + offset)
 
-        if (/(?<!^(\$)?)\$$/.test(s.sliceNode(node.callee, { offset }))) {
-          s.remove(node.callee.end! + offset - 1, node.callee.end! + offset)
-
-          node.arguments.forEach((argument) => {
-            transformArguments(argument, s, offset)
-          })
+            node.arguments.forEach((argument) => {
+              transformArguments(argument, s, offset)
+            })
+          }
+        } else if (
+          node.type === 'JSXAttribute' &&
+          node.value?.type === 'JSXExpressionContainer' &&
+          s.sliceNode(node.name).endsWith('$')
+        ) {
+          s.remove(node.name.end! - 1, node.name.end!)
+          if (node.value.expression) {
+            s.appendLeft(node.value.expression.start! + offset, '$$(')
+            s.appendRight(node.value.expression.end! + offset, ')')
+          }
         }
       },
     })

src/volar.ts

@@ -108,6 +108,28 @@ function transform({
           transformArguments(argument)
         })
       }
+    } else if (
+      ts.isJsxAttribute(node) &&
+      node.initializer &&
+      ts.isJsxExpression(node.initializer) &&
+      node.initializer.expression &&
+      getText(node.name, ast, ts).endsWith('$')
+    ) {
+      replaceSourceRange(codes, source, node.name.end - 1, node.name.end)
+      replaceSourceRange(
+        codes,
+        source,
+        node.initializer.expression.pos,
+        node.initializer.expression.pos,
+        '$$(',
+      )
+      replaceSourceRange(
+        codes,
+        source,
+        node.initializer.expression.end,
+        node.initializer.expression?.end,
+        ')',
+      )
     }
 
     ts.forEachChild(node, (child) => {

tests/__snapshots__/basic.test.ts.snap

@@ -1,7 +1,7 @@
 // Vitest Snapshot v1, https://vitest.dev/guide/snapshot.html
 
 exports[`fixtures > tests/fixtures/basic.vue 1`] = `
-"import { defineComponent, ref, watch, openBlock, createElementBlock, toDisplayString, unref } from 'vue';
+"import { defineComponent, ref, watch, openBlock, createBlock } from 'vue';
 import _export_sfc from '[NULL]/plugin-vue/export-helper';
 
 "use strict";
@@ -25,14 +25,11 @@ var _sfc_main = /* @__PURE__ */ defineComponent({
     defineExpose({
       name: $$(name)
     });
+    const title = $ref("title");
+    const Comp = ({ title: title2 }) => title2.value;
+    const Render = () => /* @__PURE__ */ React.createElement(Comp, { title: $$(title) });
     return (_ctx, _cache) => {
-      return openBlock(), createElementBlock(
-        "div",
-        null,
-        toDisplayString(unref(name)),
-        1
-        /* TEXT */
-      );
+      return openBlock(), createBlock(Render);
     };
   }
 });

tests/fixtures/basic.vue

@@ -1,5 +1,5 @@
 <script setup lang="tsx">
-import { ref, watch } from 'vue'
+import { Ref, ref, watch } from 'vue'
 
 function useApi(defaultName = ref('')) {
   const id = ref(1)
@@ -22,10 +22,12 @@ watch$(name, () => {})
 defineExpose$({
   name,
 })
+
+const title = $ref<string>('title')
+const Comp = ({ title }: { title: Ref<string> }) => title.value
+const Render = () => <Comp title$={title} />
 </script>
 
 <template>
-  <div>
-    {{ name }}
-  </div>
+  <Render />
 </template>