RSC: Fix server build root (#10076)

packages/babel-config/src/plugins/babel-plugin-redwood-cell.ts

@@ -32,38 +32,18 @@ const EXPECTED_EXPORTS_FROM_CELL = [
 ]
 
 export default function ({ types: t }: { types: typeof types }): PluginObj {
-  // This array will
-  // - collect exports from the Cell file during ExportNamedDeclaration
+  // This array will collect exports from the Cell file during
+  // ExportNamedDeclaration
   // - collected exports will then be passed to `createCell`
-  // - be cleared after Program exit to prepare for the next file
+  // - The array is reset every time we `enter` a new Program
   let exportNames: string[] = []
   let hasDefaultExport = false
 
-  // TODO (RSC):
-  // This code relies on the fact that all cells first become client side
-  // cells. And then we do a second pass over all cells and transform them to
-  // server cells if applicable
-  // It'd be better if we could only do one pass over all cells. So the real
-  // todo here is to first figure out why we do two passes, and then update
-  // this code to directly generate `createCell` or `createServerCell` HoCs
-
   return {
     name: 'babel-plugin-redwood-cell',
     visitor: {
-      ExportDefaultDeclaration(path) {
+      ExportDefaultDeclaration() {
         hasDefaultExport = true
-
-        // This is for RSC cells:
-        // Determine if this is `export default createCell(...)`
-        // If it is, then we change it to `export default createServerCell(...)`
-        const declaration = path.node.declaration
-        if (
-          t.isCallExpression(declaration) &&
-          t.isIdentifier(declaration.callee) &&
-          declaration.callee.name === 'createCell'
-        ) {
-          declaration.callee.name = 'createServerCell'
-        }
       },
       ExportNamedDeclaration(path) {
         const declaration = path.node.declaration
@@ -85,34 +65,6 @@ export default function ({ types: t }: { types: typeof types }): PluginObj {
           exportNames.push(name)
         }
       },
-      ImportDeclaration(path) {
-        // This is for RSC cells:
-        // Change createCell imports to createServerCell
-        const source = path.node.source.value
-        if (source === '@redwoodjs/web') {
-          const specifiers = path.node.specifiers
-          const createCellSpecifier: types.ImportSpecifier | undefined =
-            specifiers.find((specifier): specifier is types.ImportSpecifier => {
-              return (
-                t.isImportSpecifier(specifier) &&
-                t.isIdentifier(specifier.imported) &&
-                specifier.imported.name === 'createCell'
-              )
-            })
-
-          if (
-            createCellSpecifier &&
-            t.isIdentifier(createCellSpecifier.imported)
-          ) {
-            createCellSpecifier.imported.name = 'createServerCell'
-            createCellSpecifier.local.name = 'createServerCell'
-
-            // Also update where we import from
-            path.node.source.value =
-              '@redwoodjs/web/dist/components/cell/createServerCell.js'
-          }
-        }
-      },
       Program: {
         enter() {
           // Reset variables as they're still in scope from the previous file
@@ -134,25 +86,36 @@ export default function ({ types: t }: { types: typeof types }): PluginObj {
             return
           }
 
+          // TODO (RSC): When we want to support `data = async () => {}` in
+          // client cells as well, we'll need a different heuristic here
+          // If we want to support `QUERY` (gql) cells on the server we'll
+          // also need a different heuristic
+          const createCellHookName = exportNames.includes('data')
+            ? 'createServerCell'
+            : 'createCell'
+          const importFrom = exportNames.includes('data')
+            ? '@redwoodjs/web/dist/components/cell/createServerCell'
+            : '@redwoodjs/web'
+
           // Insert at the top of the file:
           // + import { createCell } from '@redwoodjs/web'
           path.node.body.unshift(
             t.importDeclaration(
               [
                 t.importSpecifier(
-                  t.identifier('createCell'),
-                  t.identifier('createCell')
+                  t.identifier(createCellHookName),
+                  t.identifier(createCellHookName)
                 ),
               ],
-              t.stringLiteral('@redwoodjs/web')
+              t.stringLiteral(importFrom)
             )
           )
 
           // Insert at the bottom of the file:
           // + export default createCell({ QUERY?, Loading?, Success?, Failure?, Empty?, beforeQuery?, isEmpty, afterQuery?, displayName? })
           path.node.body.push(
             t.exportDefaultDeclaration(
-              t.callExpression(t.identifier('createCell'), [
+              t.callExpression(t.identifier(createCellHookName), [
                 t.objectExpression([
                   ...exportNames.map((name) =>
                     t.objectProperty(

packages/vite/src/rsc/rscBuildServer.ts

@@ -45,7 +45,7 @@ export async function rscBuildServer(
 
   const serverBuildOutput = await viteBuild({
     // ...configFileConfig,
-    root: rwPaths.web.base,
+    root: rwPaths.web.src,
     envPrefix: 'REDWOOD_ENV_',
     publicDir: path.join(rwPaths.web.base, 'public'),
     envFile: false,