migrate to "export default"

also, set no-use-before-define in linter

src/storage/filesystem.js

@@ -2,42 +2,18 @@ import assert from 'node:assert';
 import BoxError from '../boxerror.js';
 import crypto from 'crypto';
 import debugModule from 'debug';
-import * as df from '../df.js';
+import df from '../df.js';
 import fs from 'node:fs';
 import mounts from '../mounts.js';
 import path from 'node:path';
 import paths from '../paths.js';
 import safe from 'safetydance';
 import shellModule from '../shell.js';
-import * as _ from '../underscore.js';
+import _ from '../underscore.js';
 
 const debug = debugModule('box:storage/filesystem');
 const shell = shellModule('filesystem');
 
-export {
-    setup,
-    teardown,
-    cleanup,
-
-    verifyConfig,
-    removePrivateFields,
-    injectPrivateFields,
-
-    getAvailableSize,
-    getStatus,
-
-    upload,
-    download,
-
-    copy,
-    copyDir,
-
-    exists,
-    listDir,
-
-    remove,
-    removeDir,
-};
 
 function getRootPath(config) {
     assert.strictEqual(typeof config, 'object');
@@ -442,3 +418,27 @@ function injectPrivateFields(newConfig, currentConfig) {
     if (currentConfig._managedMountPath) newConfig._managedMountPath = currentConfig._managedMountPath;
 }
 
+export default {
+    setup,
+    teardown,
+    cleanup,
+
+    verifyConfig,
+    removePrivateFields,
+    injectPrivateFields,
+
+    getAvailableSize,
+    getStatus,
+
+    upload,
+    download,
+
+    copy,
+    copyDir,
+
+    exists,
+    listDir,
+
+    remove,
+    removeDir,
+};

src/storage/gcs.js

@@ -6,34 +6,10 @@ import debugModule from 'debug';
 import { Storage as GCS } from '@google-cloud/storage';
 import path from 'node:path';
 import safe from 'safetydance';
-import * as _ from '../underscore.js';
+import _ from '../underscore.js';
 
 const debug = debugModule('box:storage/gcs');
 
-export {
-    getAvailableSize,
-    getStatus,
-
-    upload,
-    exists,
-    download,
-
-    copy,
-    copyDir,
-
-    listDir,
-
-    remove,
-    removeDir,
-
-    setup,
-    teardown,
-    cleanup,
-
-    verifyConfig,
-    removePrivateFields,
-    injectPrivateFields,
-};
 
 function getBucket(config) {
     assert.strictEqual(typeof config, 'object');
@@ -284,3 +260,27 @@ function injectPrivateFields(newConfig, currentConfig) {
     if (!Object.hasOwn(newConfig.credentials, 'private_key') && currentConfig.credentials) newConfig.credentials.private_key = currentConfig.credentials.private_key;
 }
 
+export default {
+    getAvailableSize,
+    getStatus,
+
+    upload,
+    exists,
+    download,
+
+    copy,
+    copyDir,
+
+    listDir,
+
+    remove,
+    removeDir,
+
+    setup,
+    teardown,
+    cleanup,
+
+    verifyConfig,
+    removePrivateFields,
+    injectPrivateFields,
+};

src/storage/interface.js

@@ -11,31 +11,6 @@ import BoxError from '../boxerror.js';
 //     retry logic for upload() comes from the syncer since it is stream based
 //     for the other API calls we leave it to the backend to retry. this allows
 //     them to tune the concurrency based on failures/rate limits accordingly
-export {
-    getAvailableSize,
-    getStatus,
-
-    upload,
-
-    exists,
-
-    download,
-    copy,
-    copyDir,
-
-    listDir,
-
-    remove,
-    removeDir,
-
-    setup,
-    teardown,
-    cleanup,
-
-    verifyConfig,
-    removePrivateFields,
-    injectPrivateFields
-};
 
 function removePrivateFields(config) {
     // in-place removal of tokens and api keys
@@ -166,3 +141,29 @@ async function teardown(config) {
 
     throw new BoxError(BoxError.NOT_IMPLEMENTED, 'teardown is not implemented');
 }
+
+export default {
+    getAvailableSize,
+    getStatus,
+
+    upload,
+
+    exists,
+
+    download,
+    copy,
+    copyDir,
+
+    listDir,
+
+    remove,
+    removeDir,
+
+    setup,
+    teardown,
+    cleanup,
+
+    verifyConfig,
+    removePrivateFields,
+    injectPrivateFields
+};

src/storage/s3.js

@@ -15,31 +15,12 @@ import { Readable } from 'node:stream';
 import { S3, NoSuchKey, NoSuchBucket } from '@aws-sdk/client-s3';
 import safe from 'safetydance';
 import { Upload } from '@aws-sdk/lib-storage';
-import * as _ from '../underscore.js';
+import _ from '../underscore.js';
 
 const debug = debugModule('box:storage/s3');
 
 const _chunk = chunk;
 
-export {
-    setup,
-    teardown,
-    cleanup,
-    verifyConfig,
-    removePrivateFields,
-    injectPrivateFields,
-    getAvailableSize,
-    getStatus,
-    upload,
-    exists,
-    download,
-    copy,
-    copyDir,
-    listDir,
-    remove,
-    removeDir,
-    _chunk,
-};
 
 function S3_NOT_FOUND(error) {
     return error instanceof NoSuchKey || error instanceof NoSuchBucket;
@@ -691,3 +672,22 @@ function injectPrivateFields(newConfig, currentConfig) {
     newConfig._provider = currentConfig._provider;
 }
 
+export default {
+    setup,
+    teardown,
+    cleanup,
+    verifyConfig,
+    removePrivateFields,
+    injectPrivateFields,
+    getAvailableSize,
+    getStatus,
+    upload,
+    exists,
+    download,
+    copy,
+    copyDir,
+    listDir,
+    remove,
+    removeDir,
+    _chunk,
+};