CHANGELOG.md

@@ -2,6 +2,18 @@
 
 All notable changes to this project will be documented in this file. See [standard-version](https://github.com/conventional-changelog/standard-version) for commit guidelines.
 
+### [0.5.8](https://github.com/unjs/mlly/compare/v0.5.7...v0.5.8) (2022-08-10)
+
+
+### Features
+
+* **resolveModuleExportNames:** resolve recursive star exports ([50991e4](https://github.com/unjs/mlly/commit/50991e491efba146dc3385da2b13a44eb3c13374))
+
+
+### Bug Fixes
+
+* **resolveModuleExportNames:** filter out star exports ([dd63a31](https://github.com/unjs/mlly/commit/dd63a31010d8b55d2fbdf4f910afda9b629b2bbb))
+
 ### [0.5.7](https://github.com/unjs/mlly/compare/v0.5.6...v0.5.7) (2022-08-03)
 
 

package.json

@@ -1,6 +1,6 @@
 {
   "name": "mlly",
-  "version": "0.5.7",
+  "version": "0.5.8",
   "description": "Missing ECMAScript module utils for Node.js",
   "repository": "unjs/mlly",
   "license": "MIT",

src/analyze.ts

@@ -147,14 +147,28 @@ export function findExports (code: string): ESMExport[] {
 }
 
 export function findExportNames (code: string): string[] {
-  return findExports(code).flatMap(exp => exp.names)
+  return findExports(code).flatMap(exp => exp.names).filter(Boolean)
 }
 
 export async function resolveModuleExportNames (id: string, opts?: ResolveOptions): Promise<string[]> {
   const url = await resolvePath(id, opts)
   const code = await loadURL(url)
   const exports = findExports(code)
-  return exports.flatMap(exp => exp.names)
+
+  // Explicit named exports
+  const exportNames = new Set(exports.flatMap(exp => exp.names).filter(Boolean))
+
+  // Recursive * exports
+  for (const exp of exports) {
+    if (exp.type === 'star') {
+      const subExports = await resolveModuleExportNames(exp.specifier, { ...opts, url })
+      for (const subExport of subExports) {
+        exportNames.add(subExport)
+      }
+    }
+  }
+
+  return Array.from(exportNames)
 }
 
 // --- Internal ---

test/exports.test.ts

@@ -1,3 +1,4 @@
+import { join } from 'path'
 import { describe, it, expect } from 'vitest'
 import { ESMExport, findExports, findExportNames, resolveModuleExportNames } from '../src'
 
@@ -136,7 +137,7 @@ describe('fineExportNames', () => {
 })
 
 describe('resolveModuleExportNames', () => {
-  it('resolveModuleExportNames', async () => {
+  it('direct exports', async () => {
     expect(await resolveModuleExportNames('pathe')).toMatchInlineSnapshot(`
       [
         "basename",
@@ -156,4 +157,27 @@ describe('resolveModuleExportNames', () => {
       ]
     `)
   })
+
+  it('star exports', async () => {
+    expect(await resolveModuleExportNames(new URL('./fixture/exports.mjs', import.meta.url).toString())).toMatchInlineSnapshot(`
+      [
+        "foo",
+        "_resolve",
+        "basename",
+        "delimiter",
+        "dirname",
+        "extname",
+        "format",
+        "isAbsolute",
+        "join",
+        "normalize",
+        "normalizeString",
+        "parse",
+        "relative",
+        "resolve",
+        "sep",
+        "toNamespacedPath",
+      ]
+    `)
+  })
 })

test/fixture/exports.mjs

@@ -0,0 +1,5 @@
+export * from 'pathe'
+
+export { resolve as _resolve } from 'pathe'
+
+export const foo = 'bar'