fix: head content with component first (#1098)

Co-authored-by: ematipico <[email protected]>

Author: HiDeoo

.changeset/curvy-poets-jog.md

@@ -0,0 +1,5 @@
+---
+"@astrojs/compiler": patch
+---
+
+Fixes a potential parsing issue with head content defined in a component where another component is rendered first.

internal/parser.go

@@ -1509,7 +1509,7 @@ func inBodyIM(p *parser) bool {
 		case a.Br:
 			p.tok.Type = StartTagToken
 			return false
-		case a.Template:
+		case a.Base, a.Basefont, a.Bgsound, a.Link, a.Meta, a.Noframes, a.Script, a.Style, a.Template, a.Title:
 			return inHeadIM(p)
 		default:
 			p.inBodyEndTagOther(p.tok.DataAtom, p.tok.Data)

internal/printer/__printer_js__/head_content_with_component_first.snap

@@ -0,0 +1,51 @@
+
+[TestPrinter/head_content_with_component_first - 1]
+## Input
+
+```
+/-/-/-/
+import Analytics from '../components/Analytics.astro';
+/-/-/-/
+<Analytics />
+<title>{title}</title>
+<meta name="description" content="a description" />
+```
+
+## Output
+
+```js
+import {
+  Fragment,
+  render as $$render,
+  createAstro as $$createAstro,
+  createComponent as $$createComponent,
+  renderComponent as $$renderComponent,
+  renderHead as $$renderHead,
+  maybeRenderHead as $$maybeRenderHead,
+  unescapeHTML as $$unescapeHTML,
+  renderSlot as $$renderSlot,
+  mergeSlots as $$mergeSlots,
+  addAttribute as $$addAttribute,
+  spreadAttributes as $$spreadAttributes,
+  defineStyleVars as $$defineStyleVars,
+  defineScriptVars as $$defineScriptVars,
+  renderTransition as $$renderTransition,
+  createTransitionScope as $$createTransitionScope,
+  renderScript as $$renderScript,
+  createMetadata as $$createMetadata
+} from "http://localhost:3000/";
+import Analytics from '../components/Analytics.astro';
+
+import * as $$module1 from '../components/Analytics.astro';
+
+export const $$metadata = $$createMetadata(import.meta.url, { modules: [{ module: $$module1, specifier: '../components/Analytics.astro', assert: {} }], hydratedComponents: [], clientOnlyComponents: [], hydrationDirectives: new Set([]), hoisted: [] });
+
+const $$Component = $$createComponent(($$result, $$props, $$slots) => {
+
+return $$render`${$$renderComponent($$result,'Analytics',Analytics,{})}
+<title>${title}</title>
+<meta name="description" content="a description">`;
+}, undefined, undefined);
+export default $$Component;
+```
+---

internal/printer/printer_test.go

@@ -2066,6 +2066,15 @@ const meta = { title: 'My App' };
 			name:   "namespace is preserved when inside an expression",
 			source: `<svg>{<image />}</svg>`,
 		},
+		{
+			name: "head content with component first",
+			source: `---
+import Analytics from '../components/Analytics.astro';
+---
+<Analytics />
+<title>{title}</title>
+<meta name="description" content="a description" />`,
+		},
 	}
 	for _, tt := range tests {
 		if tt.only {