resend · gabrielmfern · Nov 4, 2024 · Nov 4, 2024 · Nov 4, 2024 · Nov 4, 2024
diff --git a/.changeset/five-pants-boil.md b/.changeset/five-pants-boil.md
@@ -0,0 +1,5 @@
+---
+"@react-email/tailwind": patch
+---
+
+Fix duplicate media query styles
diff --git a/.changeset/moody-steaks-invent.md b/.changeset/moody-steaks-invent.md
@@ -0,0 +1,5 @@
+---
+"@react-email/tailwind": patch
+---
+
+Fix Promise being returned as a React Node
diff --git a/packages/tailwind/integrations/nextjs/next-env.d.ts b/packages/tailwind/integrations/nextjs/next-env.d.ts
@@ -2,4 +2,4 @@
 /// <reference types="next/image-types/global" />
 
 // NOTE: This file should not be edited
-// see https://nextjs.org/docs/basic-features/typescript for more information.
+// see https://nextjs.org/docs/app/building-your-application/configuring/typescript for more information.
diff --git a/packages/tailwind/integrations/nextjs/package-lock.json b/packages/tailwind/integrations/nextjs/package-lock.json
diff --git a/packages/tailwind/integrations/vite/package-lock.json b/packages/tailwind/integrations/vite/package-lock.json
diff --git a/packages/tailwind/src/__snapshots__/tailwind.spec.tsx.snap b/packages/tailwind/src/__snapshots__/tailwind.spec.tsx.snap
@@ -16,6 +16,8 @@ exports[`Custom theme config > should be able to use custom text alignment 1`] =
 
 exports[`Responsive styles > should add css to <head/> and keep responsive class names 1`] = `"<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"><html lang="en"><head><!--$--><style>@media(min-width:640px){.sm_bg-red-300{background-color:rgb(252,165,165) !important}}@media(min-width:768px){.md_bg-red-400{background-color:rgb(248,113,113) !important}}@media(min-width:1024px){.lg_bg-red-500{background-color:rgb(239,68,68) !important}}</style></head><body><div class="sm_bg-red-300 md_bg-red-400 lg_bg-red-500" style="background-color:rgb(254,202,202)"></div><!--/$--></body></html>"`;
 
+exports[`Responsive styles > should not have duplicate media queries 1`] = `"<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"><head><meta content="text/html; charset=UTF-8" http-equiv="Content-Type"/><meta name="x-apple-disable-message-reformatting"/><!--$--><style>@media(min-width:768px){.md_px-64px{padding-left:64px !important;padding-right:64px !important}}</style></head><body class="md_px-64px" style="background-color:rgb(255,255,255);margin-top:auto;margin-bottom:auto;margin-left:auto;margin-right:auto;font-family:ui-sans-serif, system-ui, sans-serif, &quot;Apple Color Emoji&quot;, &quot;Segoe UI Emoji&quot;, &quot;Segoe UI Symbol&quot;, &quot;Noto Color Emoji&quot;"><div class="md_px-64px"></div><!--/$--></body>"`;
+
 exports[`Responsive styles > should persist existing <head/> elements 1`] = `"<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"><html lang="en"><head><!--$--><style></style><link/><style>@media(min-width:640px){.sm_bg-red-500{background-color:rgb(239,68,68) !important}}</style></head><body><div class="sm_bg-red-500" style="background-color:rgb(254,202,202)"></div><!--/$--></body></html>"`;
 
 exports[`Responsive styles > should throw an error when used without a <head/> 1`] = `
@@ -46,7 +48,7 @@ exports[`Responsive styles > should work with arbitrarily deep (in the React tre
 
 exports[`Responsive styles > should work with arbitrarily deep (in the React tree) <head> elements 2`] = `"<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"><html lang="en"><head><!--$--><style>@media(min-width:640px){.sm_bg-red-300{background-color:rgb(252,165,165) !important}}@media(min-width:768px){.md_bg-red-400{background-color:rgb(248,113,113) !important}}@media(min-width:1024px){.lg_bg-red-500{background-color:rgb(239,68,68) !important}}</style></head><body><div class="sm_bg-red-300 md_bg-red-400 lg_bg-red-500" style="background-color:rgb(254,202,202)"></div><!--/$--></body></html>"`;
 
-exports[`Responsive styles > should work with relatively complex media query utilities 1`] = `"<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"><head><meta content="text/html; charset=UTF-8" http-equiv="Content-Type"/><meta name="x-apple-disable-message-reformatting"/><!--$--><style>@media not all and(min-width:640px){.max-sm_text-red-600{color:rgb(220,38,38) !important}}</style></head><p class="max-sm_text-red-600" style="color:rgb(29,78,216)">I am some text<!-- --></p><!--/$-->"`;
+exports[`Responsive styles > should work with relatively complex media query utilities 1`] = `"<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"><head><meta content="text/html; charset=UTF-8" http-equiv="Content-Type"/><meta name="x-apple-disable-message-reformatting"/><!--$--><style>@media not all and(min-width:640px){.max-sm_text-red-600{color:rgb(220,38,38) !important}}</style></head><p class="max-sm_text-red-600" style="color:rgb(29,78,216)">I am some text</p><!--/$-->"`;
 
 exports[`Tailwind component > <Button className="px-3 py-2 mt-8 text-sm text-gray-200 bg-blue-600 rounded-md"> 1`] = `"<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"><!--$--><a style="padding-left:0.75rem;padding-right:0.75rem;padding-top:0.5rem;padding-bottom:0.5rem;margin-top:2rem;font-size:0.875rem;line-height:1.25rem;color:rgb(229,231,235);background-color:rgb(37,99,235);border-radius:0.375rem;text-decoration:none;display:inline-block;max-width:100%;mso-padding-alt:0px;padding:8px 12px 8px 12px" target="_blank"><span><!--[if mso]><i style="mso-font-width:300%;mso-text-raise:12" hidden>&#8202;&#8202;</i><![endif]--></span><span style="max-width:100%;display:inline-block;line-height:120%;mso-padding-alt:0px;mso-text-raise:6px">Testing button</span><span><!--[if mso]><i style="mso-font-width:300%" hidden>&#8202;&#8202;&#8203;</i><![endif]--></span></a>Testing<!--/$-->"`;
 
@@ -60,13 +62,13 @@ exports[`Tailwind component > should not override inline styles with Tailwind st
 
 exports[`Tailwind component > should preserve mso styles 1`] = `"<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"><html dir="ltr" lang="en"><head><meta content="text/html; charset=UTF-8" http-equiv="Content-Type"/><meta name="x-apple-disable-message-reformatting"/><!--$--><style>@media(min-width:640px){.sm_bg-red-50{background-color:rgb(254,242,242) !important}.sm_text-sm{font-size:0.875rem !important;line-height:1.25rem !important}}@media(min-width:768px){.md_text-lg{font-size:1.125rem !important;line-height:1.75rem !important}}</style></head><span><!--[if mso]><i style="letter-spacing: 10px;mso-font-width:-100%;" hidden>&nbsp;</i><![endif]--></span><div class="sm_bg-red-50 sm_text-sm md_text-lg custom-class" style="background-color:rgb(255,255,255)"></div><!--/$--></html>"`;
 
-exports[`Tailwind component > should recognize custom responsive screen 1`] = `"<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"><html dir="ltr" lang="en"><head><meta content="text/html; charset=UTF-8" http-equiv="Content-Type"/><meta name="x-apple-disable-message-reformatting"/><!--$--><style>@media(min-width:1280px){.xl_bg-green-500{background-color:rgb(34,197,94) !important}}@media(min-width:1536px){.twoxl_bg-blue-500{background-color:rgb(59,130,246) !important}}</style></head><div class="xl_bg-green-500" style="background-color:rgb(254,226,226)">Test<!-- --></div><div class="twoxl_bg-blue-500">Test<!-- --></div><!--/$--></html>"`;
+exports[`Tailwind component > should recognize custom responsive screen 1`] = `"<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"><html dir="ltr" lang="en"><head><meta content="text/html; charset=UTF-8" http-equiv="Content-Type"/><meta name="x-apple-disable-message-reformatting"/><!--$--><style>@media(min-width:1280px){.xl_bg-green-500{background-color:rgb(34,197,94) !important}}@media(min-width:1536px){.twoxl_bg-blue-500{background-color:rgb(59,130,246) !important}}</style></head><div class="xl_bg-green-500" style="background-color:rgb(254,226,226)">Test</div><div class="twoxl_bg-blue-500">Test</div><!--/$--></html>"`;
 
 exports[`Tailwind component > should work properly with 'no-underline' 1`] = `"<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"><html dir="ltr" lang="en"><head></head><!--$--><body><p style="color:rgb(0,0,0);font-size:14px;line-height:24px">or copy and paste this URL into your browser:<!-- --> <a class="other" href="https://react.email" style="color:rgb(37,99,235);text-decoration-line:none" target="_blank">https://react.email</a></p><p style="color:rgb(0,0,0);font-size:14px;line-height:24px">or copy and paste this URL into your browser:<!-- --> <a href="https://react.email" style="color:rgb(37,99,235);text-decoration-line:none" target="_blank">https://react.email</a></p><!--/$--></body></html>"`;
 
 exports[`Tailwind component > should work with Heading component 1`] = `"<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"><!--$-->Hello<h1>My testing heading</h1>friends<!--/$-->"`;
 
-exports[`Tailwind component > should work with calc() with + sign 1`] = `"<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"><head><!--$--><style>@media(min-width:1024px){.lg_max-h-calc50pxplus5rem{max-height:calc(50px + 5rem) !important}}</style></head><div class="lg_max-h-calc50pxplus5rem" style="max-height:calc(50px + 3rem);background-color:rgb(254,226,226)"><div style="height:200px">something tall<!-- --></div></div><!--/$-->"`;
+exports[`Tailwind component > should work with calc() with + sign 1`] = `"<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"><head><!--$--><style>@media(min-width:1024px){.lg_max-h-calc50pxplus5rem{max-height:calc(50px + 5rem) !important}}</style></head><div class="lg_max-h-calc50pxplus5rem" style="max-height:calc(50px + 3rem);background-color:rgb(254,226,226)"><div style="height:200px">something tall</div></div><!--/$-->"`;
 
 exports[`Tailwind component > should work with class manipulation done on components 1`] = `"<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"><!--$--><div style="color:rgb(96,165,250);padding:4px;background-color:rgb(239,68,68)"></div><!--/$-->"`;
 

diff --git a/packages/tailwind/src/tailwind.spec.tsx b/packages/tailwind/src/tailwind.spec.tsx
@@ -382,6 +382,22 @@ describe("Responsive styles", () => {
     ).toMatchSnapshot();
   });
 
+  it("should not have duplicate media queries", async () => {
+    const Body = (props: { className: string; children: React.ReactNode }) => {
+      return <body className={props.className}>{props.children}</body>;
+    };
+    const output = await render(
+      <Tailwind>
+        <Head />
+        <Body className="bg-white my-auto mx-auto font-sans md:px-[64px]">
+          <div className="md:px-[64px]"></div>
+        </Body>
+      </Tailwind>,
+    );
+
+    expect(output).toMatchSnapshot();
+  });
+
   it("should add css to <head/> and keep responsive class names", async () => {
     const actualOutput = await render(
       <html lang="en">

diff --git a/packages/tailwind/src/tailwind.tsx b/packages/tailwind/src/tailwind.tsx
@@ -5,6 +5,7 @@ import { minifyCss } from "./utils/css/minify-css";
 import { setupTailwind } from "./utils/tailwindcss/setup-tailwind";
 import { mapReactTree } from "./utils/react/map-react-tree";
 import { cloneElementWithInlinedStyles } from "./utils/tailwindcss/clone-element-with-inlined-styles";
+import { removeRuleDuplicatesFromRoot } from "./utils/css/remove-rule-duplicates-from-root";
 
 export type TailwindConfig = Pick<
   TailwindOriginalConfig,
@@ -62,10 +63,12 @@ export const Tailwind: React.FC<TailwindProps> = ({ children, config }) => {
     return node;
   });
 
+  removeRuleDuplicatesFromRoot(nonInlineStylesRootToApply);
+
   if (hasNonInlineStylesToApply) {
     let hasAppliedNonInlineStyles = false as boolean;
 
-    mappedChildren = mapReactTree(mappedChildren, async (node) => {
+    mappedChildren = mapReactTree(mappedChildren, (node) => {
       if (hasAppliedNonInlineStyles) {
         return node;
       }

diff --git a/packages/tailwind/src/utils/css/remove-if-empty-recursively.ts b/packages/tailwind/src/utils/css/remove-if-empty-recursively.ts
@@ -0,0 +1,11 @@
+import type { Container, Document } from "postcss";
+
+export const removeIfEmptyRecursively = (node: Container | Document) => {
+  if (node.first === undefined) {
+    const parent = node.parent;
+    if (parent) {
+      node.remove();
+      removeIfEmptyRecursively(parent);
+    }
+  }
+};
diff --git a/packages/tailwind/src/utils/css/remove-rule-duplicates-from-root.ts b/packages/tailwind/src/utils/css/remove-rule-duplicates-from-root.ts
@@ -0,0 +1,16 @@
+import type { Root } from "postcss";
+import { removeIfEmptyRecursively } from "./remove-if-empty-recursively";
+
+export const removeRuleDuplicatesFromRoot = (root: Root) => {
+  root.walkRules((rule) => {
+    root.walkRules(rule.selector, (duplicateRule) => {
+      if (duplicateRule === rule) return;
+
+      const parent = duplicateRule.parent;
+      duplicateRule.remove();
+      if (parent) {
+        removeIfEmptyRecursively(parent);
+      }
+    });
+  });
+};
diff --git a/packages/tailwind/src/utils/css/resolve-all-css-variables.ts b/packages/tailwind/src/utils/css/resolve-all-css-variables.ts
@@ -1,24 +1,13 @@
 import {
-  type Container,
   type Root,
-  type Document,
   type Node,
   type Declaration,
   Rule,
   rule as createRule,
   decl as createDeclaration,
   AtRule,
 } from "postcss";
-
-const removeIfEmptyRecursively = (node: Container | Document) => {
-  if (node.first === undefined) {
-    const parent = node.parent;
-    if (parent) {
-      node.remove();
-      removeIfEmptyRecursively(parent);
-    }
-  }
-};
+import { removeIfEmptyRecursively } from "./remove-if-empty-recursively";
 
 const doNodesMatch = (first: Node | undefined, second: Node | undefined) => {
   if (first instanceof Rule && second instanceof Rule) {

diff --git a/packages/tailwind/src/utils/tailwindcss/__snapshots__/setup-tailwind.spec.ts.snap b/packages/tailwind/src/utils/tailwindcss/__snapshots__/setup-tailwind.spec.ts.snap
@@ -1,20 +1,5 @@
 // Vitest Snapshot v1, https://vitest.dev/guide/snapshot.html
 
-exports[`setupTailwind() 1`] = `
-".text-red-500 {
-    color: rgb(239 68 68 / 1)
-}
-  @media (min-width: 640px) {
-    .sm\\:bg-blue-300 {
-        background-color: rgb(147 197 253 / 1)
-    }
-}
-  .bg-slate-900 {
-    background-color: rgb(15 23 42 / 1)
-}
-"
-`;
-
 exports[`tailwind's generateRootForClasses() 1`] = `
 ".text-red-500 {
     color: rgb(239 68 68 / 1)