fix(babel-plugin-export-metadata): re-export causes meta error

other-packages/babel-plugin-export-metadata/src/index.js

@@ -15,6 +15,11 @@ const buildFileMeta = template(`
   }
 `)
 
+const replaceExportDefault = template(`
+  import NAME from 'SOURCE'
+  export default NAME
+`)
+
 const getFilename = state => {
   const filename = get(state, 'file.opts.filename')
   return filename && path.relative(process.cwd(), filename)
@@ -40,6 +45,34 @@ const addFileMetaProperties = (t, path, filename, name) => {
   pathToInsert.insertAfter(newNode)
 }
 
+const renameDefaultAddFileMetaProperties = (t, path, filename, name) => {
+  if (!filename || !name) {
+    return
+  }
+
+  const sourceValue = get(path, 'node.source.value')
+  const localeName = get(path, 'node.specifiers[0].local.name')
+  const pathToInsert = findPathToInsert(path)
+
+  const fallbackName =
+    localeName === 'default' ? '__DOCZ_DUMMY_EXPORT_DEFAULT' : localeName
+
+  // replace
+  const nameExport = replaceExportDefault({
+    NAME: fallbackName,
+    SOURCE: sourceValue,
+  })
+
+  // insert
+  const newNode = buildFileMeta({
+    ID: t.identifier(fallbackName),
+    NAME: t.stringLiteral(fallbackName),
+    FILENAME: t.stringLiteral(filename),
+  })
+
+  pathToInsert.replaceWithMultiple(nameExport)
+}
+
 const insertNodeExport = t => (path, state) => {
   const filename = getFilename(state)
   if (/(\.cache|\.docz).+/.test(filename)) return
@@ -57,13 +90,17 @@ const insertNodeExport = t => (path, state) => {
     }
   } else if (specifiers) {
     for (specifier of specifiers) {
-      let specifierName = get(specifier, 'local.name')
-      specifierName =
-        specifierName === 'default'
-          ? get(specifier, 'exported.name')
-          : specifierName
-
-      addFileMetaProperties(t, path, filename, specifierName)
+      const localName = get(specifier, 'local.name')
+      const exportedName = get(specifier, 'exported.name')
+      const source = get(path, 'node.source')
+      if (source && exportedName === 'default') {
+        // case for: export default from './a.js'. `default` is a keyword, rename it
+        renameDefaultAddFileMetaProperties(t, path, filename, 'default')
+      } else {
+        // if there is `path.source`, the specifier is imported from another module. Then use its exportedName
+        const specifierName = source ? exportedName : localName
+        addFileMetaProperties(t, path, filename, specifierName)
+      }
     }
   }
 }

other-packages/babel-plugin-export-metadata/tests/__snapshots__/index.test.js.snap

@@ -8,7 +8,7 @@ let bar5 = () => {};
 
 export default [foo5, bar5];
 
-if (typeof bar5 !== 'undefined' && bar5 && bar5 === Object(bar5)) {
+if (typeof bar5 !== 'undefined' && bar5 && bar5 === Object(bar5) && Object.isExtensible(bar5)) {
   Object.defineProperty(bar5, '__filemeta', {
     enumerable: true,
     configurable: true,
@@ -19,7 +19,7 @@ if (typeof bar5 !== 'undefined' && bar5 && bar5 === Object(bar5)) {
   });
 }
 
-if (typeof foo5 !== 'undefined' && foo5 && foo5 === Object(foo5)) {
+if (typeof foo5 !== 'undefined' && foo5 && foo5 === Object(foo5) && Object.isExtensible(foo5)) {
   Object.defineProperty(foo5, '__filemeta', {
     enumerable: true,
     configurable: true,
@@ -35,7 +35,7 @@ exports[`export-metadata export default works with Class declaration 1`] = `
 "/* ExportDefaultDeclaration with Class declaration */
 export default class Bar6 {}
 
-if (typeof Bar6 !== 'undefined' && Bar6 && Bar6 === Object(Bar6)) {
+if (typeof Bar6 !== 'undefined' && Bar6 && Bar6 === Object(Bar6) && Object.isExtensible(Bar6)) {
   Object.defineProperty(Bar6, '__filemeta', {
     enumerable: true,
     configurable: true,
@@ -51,7 +51,7 @@ exports[`export-metadata export default works with Function declaration 1`] = `
 "/* ExportDefaultDeclaration with Function declaration */
 export default function foo6() {}
 
-if (typeof foo6 !== 'undefined' && foo6 && foo6 === Object(foo6)) {
+if (typeof foo6 !== 'undefined' && foo6 && foo6 === Object(foo6) && Object.isExtensible(foo6)) {
   Object.defineProperty(foo6, '__filemeta', {
     enumerable: true,
     configurable: true,
@@ -68,7 +68,7 @@ exports[`export-metadata export default works with Identifier 1`] = `
 let foo3 = 5;
 export default foo3;
 
-if (typeof foo3 !== 'undefined' && foo3 && foo3 === Object(foo3)) {
+if (typeof foo3 !== 'undefined' && foo3 && foo3 === Object(foo3) && Object.isExtensible(foo3)) {
   Object.defineProperty(foo3, '__filemeta', {
     enumerable: true,
     configurable: true,
@@ -87,7 +87,7 @@ export default {
   bar4: () => {}
 };
 
-if (typeof bar4 !== 'undefined' && bar4 && bar4 === Object(bar4)) {
+if (typeof bar4 !== 'undefined' && bar4 && bar4 === Object(bar4) && Object.isExtensible(bar4)) {
   Object.defineProperty(bar4, '__filemeta', {
     enumerable: true,
     configurable: true,
@@ -98,7 +98,7 @@ if (typeof bar4 !== 'undefined' && bar4 && bar4 === Object(bar4)) {
   });
 }
 
-if (typeof foo4 !== 'undefined' && foo4 && foo4 === Object(foo4)) {
+if (typeof foo4 !== 'undefined' && foo4 && foo4 === Object(foo4) && Object.isExtensible(foo4)) {
   Object.defineProperty(foo4, '__filemeta', {
     enumerable: true,
     configurable: true,
@@ -120,7 +120,7 @@ let baz = 'baz';
 export { foo as default, bar as foobar, baz };
 /* ExportNamedDeclaration with Variable declarations */
 
-if (typeof baz !== 'undefined' && baz && baz === Object(baz)) {
+if (typeof baz !== 'undefined' && baz && baz === Object(baz) && Object.isExtensible(baz)) {
   Object.defineProperty(baz, '__filemeta', {
     enumerable: true,
     configurable: true,
@@ -131,7 +131,7 @@ if (typeof baz !== 'undefined' && baz && baz === Object(baz)) {
   });
 }
 
-if (typeof bar !== 'undefined' && bar && bar === Object(bar)) {
+if (typeof bar !== 'undefined' && bar && bar === Object(bar) && Object.isExtensible(bar)) {
   Object.defineProperty(bar, '__filemeta', {
     enumerable: true,
     configurable: true,
@@ -142,7 +142,7 @@ if (typeof bar !== 'undefined' && bar && bar === Object(bar)) {
   });
 }
 
-if (typeof foo !== 'undefined' && foo && foo === Object(foo)) {
+if (typeof foo !== 'undefined' && foo && foo === Object(foo) && Object.isExtensible(foo)) {
   Object.defineProperty(foo, '__filemeta', {
     enumerable: true,
     configurable: true,
@@ -157,7 +157,7 @@ export let foo1 = 5,
     bar1 = () => {};
 /* ExportNamedDeclaration with Function and Class declarations */
 
-if (typeof bar1 !== 'undefined' && bar1 && bar1 === Object(bar1)) {
+if (typeof bar1 !== 'undefined' && bar1 && bar1 === Object(bar1) && Object.isExtensible(bar1)) {
   Object.defineProperty(bar1, '__filemeta', {
     enumerable: true,
     configurable: true,
@@ -168,7 +168,7 @@ if (typeof bar1 !== 'undefined' && bar1 && bar1 === Object(bar1)) {
   });
 }
 
-if (typeof foo1 !== 'undefined' && foo1 && foo1 === Object(foo1)) {
+if (typeof foo1 !== 'undefined' && foo1 && foo1 === Object(foo1) && Object.isExtensible(foo1)) {
   Object.defineProperty(foo1, '__filemeta', {
     enumerable: true,
     configurable: true,
@@ -181,7 +181,7 @@ if (typeof foo1 !== 'undefined' && foo1 && foo1 === Object(foo1)) {
 
 export function foo2() {}
 
-if (typeof foo2 !== 'undefined' && foo2 && foo2 === Object(foo2)) {
+if (typeof foo2 !== 'undefined' && foo2 && foo2 === Object(foo2) && Object.isExtensible(foo2)) {
   Object.defineProperty(foo2, '__filemeta', {
     enumerable: true,
     configurable: true,
@@ -194,7 +194,7 @@ if (typeof foo2 !== 'undefined' && foo2 && foo2 === Object(foo2)) {
 
 export class Bar2 {}
 
-if (typeof Bar2 !== 'undefined' && Bar2 && Bar2 === Object(Bar2)) {
+if (typeof Bar2 !== 'undefined' && Bar2 && Bar2 === Object(Bar2) && Object.isExtensible(Bar2)) {
   Object.defineProperty(Bar2, '__filemeta', {
     enumerable: true,
     configurable: true,
@@ -205,3 +205,87 @@ if (typeof Bar2 !== 'undefined' && Bar2 && Bar2 === Object(Bar2)) {
   });
 }"
 `;
+
+exports[`export-metadata re-export re export default 1`] = `
+"/* Re-export  */
+import __DOCZ_DUMMY_EXPORT_DEFAULT from \\"../assets/a\\";
+export default __DOCZ_DUMMY_EXPORT_DEFAULT;
+
+if (typeof __DOCZ_DUMMY_EXPORT_DEFAULT !== 'undefined' && __DOCZ_DUMMY_EXPORT_DEFAULT && __DOCZ_DUMMY_EXPORT_DEFAULT === Object(__DOCZ_DUMMY_EXPORT_DEFAULT) && Object.isExtensible(__DOCZ_DUMMY_EXPORT_DEFAULT)) {
+  Object.defineProperty(__DOCZ_DUMMY_EXPORT_DEFAULT, '__filemeta', {
+    enumerable: true,
+    configurable: true,
+    value: {
+      name: \\"__DOCZ_DUMMY_EXPORT_DEFAULT\\",
+      filename: \\"tests/fixtures/re-export/re-export-default.js\\"
+    }
+  });
+}"
+`;
+
+exports[`export-metadata re-export re export default to name 1`] = `
+"/* Re-export  */
+export { default as aDefault } from '../assets/a';
+
+if (typeof aDefault !== 'undefined' && aDefault && aDefault === Object(aDefault) && Object.isExtensible(aDefault)) {
+  Object.defineProperty(aDefault, '__filemeta', {
+    enumerable: true,
+    configurable: true,
+    value: {
+      name: \\"aDefault\\",
+      filename: \\"tests/fixtures/re-export/re-export-rename1.js\\"
+    }
+  });
+}"
+`;
+
+exports[`export-metadata re-export re export name 1`] = `
+"/* Re-export  */
+export { a } from '../assets/a';
+
+if (typeof a !== 'undefined' && a && a === Object(a) && Object.isExtensible(a)) {
+  Object.defineProperty(a, '__filemeta', {
+    enumerable: true,
+    configurable: true,
+    value: {
+      name: \\"a\\",
+      filename: \\"tests/fixtures/re-export/re-export.js\\"
+    }
+  });
+}"
+`;
+
+exports[`export-metadata re-export re export name to default 1`] = `
+"/* Re-export  */
+import a from \\"../assets/a\\";
+export default a;
+
+if (typeof a !== 'undefined' && a && a === Object(a) && Object.isExtensible(a)) {
+  Object.defineProperty(a, '__filemeta', {
+    enumerable: true,
+    configurable: true,
+    value: {
+      name: \\"a\\",
+      filename: \\"tests/fixtures/re-export/re-export-rename2.js\\"
+    }
+  });
+}"
+`;
+
+exports[`export-metadata re-export re export name to name 1`] = `
+"/* Re-export  */
+export { a as aa } from '../assets/a';
+
+if (typeof aa !== 'undefined' && aa && aa === Object(aa) && Object.isExtensible(aa)) {
+  Object.defineProperty(aa, '__filemeta', {
+    enumerable: true,
+    configurable: true,
+    value: {
+      name: \\"aa\\",
+      filename: \\"tests/fixtures/re-export/re-export-rename3.js\\"
+    }
+  });
+}"
+`;
+
+exports[`export-metadata re-export re-export default 1`] = `""`;

other-packages/babel-plugin-export-metadata/tests/fixtures/assets/a.js

@@ -0,0 +1,4 @@
+const a = 1
+const ____a = 2
+export { a }
+export default ____a

other-packages/babel-plugin-export-metadata/tests/fixtures/re-export/re-export-default.js

@@ -0,0 +1,2 @@
+/* Re-export  */
+export { default } from '../assets/a'

other-packages/babel-plugin-export-metadata/tests/fixtures/re-export/re-export-multi.js

@@ -0,0 +1,2 @@
+/* Re-export  */
+export aDefault, { a } from '../assets/a'

other-packages/babel-plugin-export-metadata/tests/fixtures/re-export/re-export-rename1.js

@@ -0,0 +1,2 @@
+/* Re-export  */
+export { default as aDefault } from '../assets/a'

other-packages/babel-plugin-export-metadata/tests/fixtures/re-export/re-export-rename2.js

@@ -0,0 +1,2 @@
+/* Re-export  */
+export { a as default } from '../assets/a'

other-packages/babel-plugin-export-metadata/tests/fixtures/re-export/re-export-rename3.js

@@ -0,0 +1,2 @@
+/* Re-export  */
+export { a as aa } from '../assets/a'

other-packages/babel-plugin-export-metadata/tests/fixtures/re-export/re-export.js

@@ -0,0 +1,2 @@
+/* Re-export  */
+export { a } from '../assets/a'