@babel/plugin-transform-typescript - npm Package Compare versions

Comparing version 7.5.1 to 7.5.2

lib/index.js

@@ -68,3 +68,16 @@ "use strict";
 const PARSED_PARAMS = new WeakSet();
+const GLOBAL_TYPES = new WeakMap();
 
+function isGlobalType(path, name) {
+  const program = path.find(path => path.isProgram()).node;
+  if (path.scope.hasOwnBinding(name)) return false;
+  if (GLOBAL_TYPES.get(program).has(name)) return true;
+  console.warn(`The exported identifier "${name}" is not declared in Babel's scope tracker\n` + `as a JavaScript value binding, and "@babel/plugin-transform-typescript"\n` + `never encountered it as a TypeScript type declaration.\n` + `It will be treated as a JavaScript value.\n\n` + `This problem is likely caused by another plugin injecting\n` + `"${name}" without registering it in the scope tracker. If you are the author\n` + ` of that plugin, please use "scope.registerDeclaration(declarationPath)".`);
+  return false;
+}
+
+function registerGlobalType(programScope, name) {
+  GLOBAL_TYPES.get(programScope.path.node).add(name);
+}
+
 var _default = (0, _helperPluginUtils().declare)((api, {
@@ -90,2 +103,6 @@ jsxPragma = "React",
 
+        if (!GLOBAL_TYPES.has(path.node)) {
+          GLOBAL_TYPES.set(path.node, new Set());
+        }
+
         if (file.ast.comments) {
@@ -101,3 +118,3 @@ for (const comment of file.ast.comments) {
 
-        for (const stmt of path.get("body")) {
+        for (let stmt of path.get("body")) {
           if (_core().types.isImportDeclaration(stmt)) {
@@ -132,3 +149,25 @@ if (stmt.node.specifiers.length === 0) {
             }
+
+            continue;
           }
+
+          if (stmt.isExportDeclaration()) {
+            stmt = stmt.get("declaration");
+          }
+
+          if (stmt.isVariableDeclaration({
+            declare: true
+          })) {
+            for (const name of Object.keys(stmt.getBindingIdentifiers())) {
+              registerGlobalType(path.scope, name);
+            }
+          } else if (stmt.isTSTypeAliasDeclaration() || stmt.isTSDeclareFunction() || stmt.isTSInterfaceDeclaration() || stmt.isClassDeclaration({
+            declare: true
+          }) || stmt.isTSEnumDeclaration({
+            declare: true
+          }) || stmt.isTSModuleDeclaration({
+            declare: true
+          }) && stmt.get("id").isIdentifier()) {
+            registerGlobalType(path.scope, stmt.node.id.name);
+          }
         }
@@ -138,3 +177,5 @@ },
       ExportNamedDeclaration(path) {
-        if (!path.node.source && path.node.specifiers.length > 0 && !path.node.specifiers.find(exportSpecifier => path.scope.hasOwnBinding(exportSpecifier.local.name))) {
+        if (!path.node.source && path.node.specifiers.length > 0 && path.node.specifiers.every(({
+          local
+        }) => isGlobalType(path, local.name))) {
           path.remove();
@@ -145,3 +186,3 @@ }
       ExportSpecifier(path) {
-        if (!path.parent.source && !path.scope.hasOwnBinding(path.node.local.name)) {
+        if (!path.parent.source && isGlobalType(path, path.node.local.name)) {
           path.remove();
@@ -152,3 +193,3 @@ }
       ExportDefaultDeclaration(path) {
-        if (_core().types.isIdentifier(path.node.declaration) && !path.scope.hasOwnBinding(path.node.declaration.name)) {
+        if (_core().types.isIdentifier(path.node.declaration) && isGlobalType(path, path.node.declaration.name)) {
           path.remove();
@@ -167,3 +208,5 @@ }
       VariableDeclaration(path) {
-        if (path.node.declare) path.remove();
+        if (path.node.declare) {
+          path.remove();
+        }
       },
@@ -170,0 +213,0 @@

package.json

 {
   "name": "@babel/plugin-transform-typescript",
-  "version": "7.5.1",
+  "version": "7.5.2",
   "description": "Transform TypeScript into ES.next",
@@ -27,3 +27,3 @@ "repository": "https://github.com/babel/babel/tree/master/packages/babel-plugin-transform-typescript",
   },
-  "gitHead": "d0519fa9076ad2b50fe0a4d745c863c61c226117"
+  "gitHead": "0dbf99bedb1d82b8414685181416c19336dd0d96"
 }

No alert changes

Improved metrics

Total package byte prevSize

23364

increased by8.19%

Lines of code

656

increased by6.15%

No dependency changes