[eas-cli] Fix symlink support (#2874)

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# Why

`fs-extra` fails to copy symbolic links as one would expect. jprichardson/node-fs-extra#708

# How

We could:
- copy and dereference symbolic links — make it so that the clone of the original directory has two copies of the files -- original and linked
- copy symbolic links without re-resolving, assuming any links will be relative and should work when unpacked on a different machine.

I think we can count on the latter.

# Test Plan

Created a link in my test repository

```
drwxr-xr-x    7 sjchmiela  staff   224B Jan 28 16:14 assets
lrwxr-xr-x    1 sjchmiela  staff     6B Feb  4 22:12 assets-linked -> assets
```

ran

```
easd build:inspect -p android -s archive -o ~/testtest --force
```

confirmed I see

```
drwxr-xr-x    7 sjchmiela  staff   224B Feb  4 22:20 assets
lrwxr-xr-x    1 sjchmiela  staff     6B Feb  4 22:20 assets-linked -> assets
```
in the result directory.

Author: sjchmiela

CHANGELOG.md

@@ -11,6 +11,7 @@ This is the log of notable changes to EAS CLI and related packages.
 ### 🐛 Bug fixes
 
 - Fixed `GitClient` not respecting `.easignore` file. ([#2873](https://github.com/expo/eas-cli/pull/2873) by [@sjchmiela](https://github.com/sjchmiela))
+- Fix symlink support in `makeShallowCopyAsync`. ([#2874](https://github.com/expo/eas-cli/pull/2874) by [@sjchmiela](https://github.com/sjchmiela))
 
 ### 🧹 Chores
 

packages/eas-cli/src/vcs/local.ts

@@ -1,5 +1,6 @@
 import fg from 'fast-glob';
-import fs from 'fs-extra';
+import fs from 'fs/promises';
+import fsExtra from 'fs-extra';
 import createIgnore, { Ignore as SingleFileIgnore } from 'ignore';
 import path from 'path';
 
@@ -42,10 +43,10 @@ export class Ignore {
 
   public async initIgnoreAsync(): Promise<void> {
     const easIgnorePath = path.join(this.rootDir, EASIGNORE_FILENAME);
-    if (await fs.pathExists(easIgnorePath)) {
+    if (await fsExtra.pathExists(easIgnorePath)) {
       this.ignoreMapping = [
         ['', createIgnore().add(DEFAULT_IGNORE)],
-        ['', createIgnore().add(await fs.readFile(easIgnorePath, 'utf-8'))],
+        ['', createIgnore().add(await fsExtra.readFile(easIgnorePath, 'utf-8'))],
       ];
       return;
     }
@@ -63,7 +64,7 @@ export class Ignore {
       ignoreFilePaths.map(async filePath => {
         return [
           filePath.slice(0, filePath.length - GITIGNORE_FILENAME.length),
-          createIgnore().add(await fs.readFile(path.join(this.rootDir, filePath), 'utf-8')),
+          createIgnore().add(await fsExtra.readFile(path.join(this.rootDir, filePath), 'utf-8')),
         ] as const;
       })
     );
@@ -82,7 +83,10 @@ export class Ignore {
 
 export async function makeShallowCopyAsync(src: string, dst: string): Promise<void> {
   const ignore = await Ignore.createAsync(src);
-  await fs.copy(src, dst, {
+  await fs.cp(src, dst, {
+    recursive: true,
+    // Preserve symlinks without re-resolving them to their original targets
+    verbatimSymlinks: true,
     filter: (srcFilePath: string) => {
       if (srcFilePath === src) {
         return true;