feat(esbuild-hybrid): provide reexport flow

packages/esbuild/plugin-hybrid-export/src/main/ts/plugin.ts

@@ -10,7 +10,7 @@ type TOpts = {
   to: string
   toExt: string
   entryPoints: string[]
-  loader: string
+  loader: 'import' | 'require' | 'reexport'
 }
 
 type TPluginOpts = Partial<TOpts>
@@ -74,11 +74,16 @@ const onEnd = async (result: OnEndResult, opts: TOpts) => {
 const formatRefs = (link: string, refs: string[], loader = 'require'): string => {
   const hasDefault = refs.includes('default')
   const _refs = refs.filter(r => r !== 'default')
-  const load = loader === 'require' ? 'require' : 'await import'
+  const module = ({
+    'require': `const __module__ = require("${link}")`,
+    'import': `const __module__ = await import("${link}")`,
+    'reexport': `import __module__ from "${link}"`
+  })[loader]
 
-  return `const {
+  return `${module}
+const {
 ${renderList([..._refs, hasDefault ? 'default: __default__' : '',].filter(Boolean))}
-} = ${load}('${link}')
+} = __module__
 export {
 ${renderList(_refs)}
 }

packages/esbuild/plugin-hybrid-export/src/test/lint/.eslintrc.json

@@ -1,4 +1,6 @@
 {
   "extends": ["eslint-config-qiwi"],
-  "rules": {}
+  "rules": {
+    "unicorn/import-style": "off"
+  }
 }

packages/esbuild/plugin-hybrid-export/src/test/ts/plugin.test.ts

@@ -38,12 +38,13 @@ describe('plugin()', () => {
     await build(config)
 
     assert.equal(await fs.readFile(path.resolve(temp, 'mixed/index.mjs'), 'utf8'), `"use strict";
+const __module__ = require("./index.js")
 const {
   bar,
   foo,
   qux,
   default: __default__
-} = require('./index.js')
+} = __module__
 export {
   bar,
   foo,
@@ -54,6 +55,50 @@ export default __default__
 )
   })
 
+  it('generates esm files via reexport', async () => {
+    const cwd = path.resolve(fixtures, 'mixed-exports')
+    const plugin = hybridExportPlugin({
+      to: '../../temp/mixed',
+      toExt: '.mjs',
+      loader: 'reexport'
+    })
+    const config: BuildOptions = {
+      entryPoints: [
+        'index.ts',
+      ],
+      plugins: [plugin],
+      platform: 'node',
+      external: ['node:*'],
+      bundle: true,
+      minify: false,
+      sourcemap: false,
+      format: 'cjs',
+      legalComments: 'none',
+      absWorkingDir: cwd,
+      outdir: path.resolve(temp, 'mixed'),
+      allowOverwrite: true,
+    }
+
+    await build(config)
+
+    assert.equal(await fs.readFile(path.resolve(temp, 'mixed/index.mjs'), 'utf8'), `"use strict";
+import __module__ from "./index.js"
+const {
+  bar,
+  foo,
+  qux,
+  default: __default__
+} = __module__
+export {
+  bar,
+  foo,
+  qux
+}
+export default __default__
+`
+    )
+  })
+
   it('generates esm files (full reexport case)', async () => {
     const cwd = path.resolve(fixtures, 'full-reexport')
     const plugin = hybridExportPlugin({
@@ -83,13 +128,14 @@ export default __default__
 
     assert.equal(await fs.readFile(path.resolve(temp, 'reexport/index.mjs'), 'utf8'), `#!/usr/bin/env node
 "use strict";
+const __module__ = await import("./index.js")
 const {
   a,
   baz,
   bar,
   foo,
   default: __default__
-} = await import('./index.js')
+} = __module__
 export {
   a,
   baz,