Implement ExportNamespaceSpecifier (#70)

* Implement ExportNamespaceSpecifier

* add two tests

* Stringifier/ExportNamedDeclaration: keep original newline layout (fixes unit test aswell)

src-transpiler/Stringifier.mjs

@@ -942,27 +942,50 @@ class Stringifier {
   ExportAllDeclaration(node) {
     return `export * from ${node.source.extra.raw};`;
   }
+  /**
+   * @param {import("@babel/types").ExportNamespaceSpecifier} node - The Babel AST node.
+   * @returns {string} Stringification of the node.
+   */
+  ExportNamespaceSpecifier(node) {
+    const {exported} = node;
+    return '* as ' + this.toSource(exported);
+  }
   /**
    * @param {import("@babel/types").ExportNamedDeclaration} node - The Babel AST node.
    * @returns {string} Stringification of the node.
    */
   ExportNamedDeclaration(node) {
-    const {declaration, source, specifiers} = node;
+    const {declaration, source, specifiers, loc} = node;
     let out = this.spaces;
     if (specifiers.length) {
       if (!source) {
-        //debugger;
+        console.warn("ExportNamedDeclaration> no source given");
       }
-      out += 'export {\n';
-      // todo: fix spacing system
-      out += this.mapToSource(specifiers).map(_ => `  ${this.spaces}${_}`).join(',\n');
-      out += '\n';
-      out += this.spaces;
-      out += '}';
-      if (source) {
-        out += " from " + this.toSource(source);
+      if (specifiers.length === 1 && specifiers[0].type === 'ExportNamespaceSpecifier') {
+        out += 'export ';
+        out += this.toSource(specifiers[0]);
+        out += ' from ';
+        out += this.toSource(source);
+        out += ";";
+      } else {
+        const sameLine = loc.start.line === loc.end.line;
+        if (sameLine) {
+          out += 'export {';
+          out += this.mapToSource(specifiers).join(', ');
+          out += '}';
+        } else {
+          out += 'export {\n';
+          // todo: fix spacing system
+          out += this.mapToSource(specifiers).map(_ => `  ${this.spaces}${_}`).join(',\n');
+          out += '\n';
+          out += this.spaces;
+          out += '}';
+        }
+        if (source) {
+          out += " from " + this.toSource(source);
+        }
+        out += ";\n";
       }
-      out += ";\n";
     } else if (declaration) {
       out += 'export ' + this.toSource(declaration);
     } else {

test/typechecking.json

@@ -19,6 +19,10 @@
     "input": "./test/typechecking/ClassProperty-value-is-null-input.mjs",
     "output": "./test/typechecking/ClassProperty-value-is-null-output.mjs"
   },
+  {
+    "input": "./test/typechecking/ExportNamespaceSpecifier-input.mjs",
+    "output": "./test/typechecking/ExportNamespaceSpecifier-output.mjs"
+  },
   {
     "input": "./test/typechecking/ParenthesizedExpression-multiline-input.mjs",
     "output": "./test/typechecking/ParenthesizedExpression-multiline-output.mjs"
@@ -39,6 +43,10 @@
     "input": "./test/typechecking/computed-ClassMethod-input.mjs",
     "output": "./test/typechecking/computed-ClassMethod-output.mjs"
   },
+  {
+    "input": "./test/typechecking/export-input.mjs",
+    "output": "./test/typechecking/export-output.mjs"
+  },
   {
     "input": "./test/typechecking/functions-input.mjs",
     "output": "./test/typechecking/functions-output.mjs"

test/typechecking/ExportNamespaceSpecifier-input.mjs

@@ -0,0 +1 @@
+export * as rti from '@runtime-type-inspector/runtime';

test/typechecking/ExportNamespaceSpecifier-output.mjs

@@ -0,0 +1 @@
+export * as rti from '@runtime-type-inspector/runtime';

test/typechecking/export-input.mjs

@@ -0,0 +1,3 @@
+export {default as rti1} from '@runtime-type-inspector/runtime';
+export * as rti2 from '@runtime-type-inspector/runtime';
+export * from '@runtime-type-inspector/runtime';

test/typechecking/export-output.mjs

@@ -0,0 +1,3 @@
+export {default as rti1} from '@runtime-type-inspector/runtime';
+export * as rti2 from '@runtime-type-inspector/runtime';
+export * from '@runtime-type-inspector/runtime';