feat: support WRN imports and dynamic public shell

packages/compiler/src/parser.ts

@@ -146,6 +146,8 @@ export interface PropDecl {
 
 export interface PageAst {
   type: "page";
+  /** Static ES module imports declared before the WRN root declaration. */
+  imports: string[];
   /**
    * `page` is a route, `component` is a reusable fragment,
    * and `layout` is a reusable page wrapper.
@@ -197,6 +199,21 @@ function unescapeSeoValue(value: string): string {
 export function parse(source: string): PageAst {
   const lx = new Lexer(source);
 
+  const imports: string[] = [];
+  const importPattern = /import\s+(?:type\s+)?(?:[\s\S]*?\s+from\s+)?["'][^"'\r\n]+["']\s*;?/y;
+  while (true) {
+    while (/\s/u.test(source[lx.pos] ?? "")) lx.pos++;
+    if (source.startsWith("//", lx.pos)) {
+      while (lx.pos < source.length && source[lx.pos] !== "\n") lx.pos++;
+      continue;
+    }
+    importPattern.lastIndex = lx.pos;
+    const statement = importPattern.exec(source);
+    if (!statement) break;
+    imports.push(statement[0].trim());
+    lx.pos = importPattern.lastIndex;
+  }
+
   const expect = (type: Token["type"]): Token => {
     const t = lx.next();
     if (t.type !== type) {
@@ -474,6 +491,7 @@ export function parse(source: string): PageAst {
 
     return {
       type: "page",
+      imports,
       kind,
       name,
       layout,