feat: 🎸 implement exists() method

streamich · Jun 17, 2023 · 0753937 · 0753937
1 parent c72390b
commit 0753937
Show file tree

Hide file tree

Showing 2 changed files with 15 additions and 12 deletions.
diff --git a/src/fsa-to-node/FsaNodeFs.ts b/src/fsa-to-node/FsaNodeFs.ts
@@ -308,10 +308,7 @@ export class FsaNodeFs implements FsCallbackApi {
   public readonly exists: FsCallbackApi['exists'] = (path: misc.PathLike, callback: (exists: boolean) => void): void => {
     const filename = pathToFilename(path);
     if (typeof callback !== 'function') throw Error(ERRSTR.CB);
-    const [folder, name] = pathToLocation(filename);
-    (async () => {
-      // const stats = await new Promise();
-    })().then(() => callback(true), () => callback(false));
+    this.access(path, AMODE.F_OK, (error) => callback(!error));
   };
 
   public readonly access: FsCallbackApi['access'] = (path: misc.PathLike, a: misc.TCallback<void> | number, b?: misc.TCallback<void>) => {

diff --git a/src/fsa-to-node/__tests__/FsaNodeFs.test.ts b/src/fsa-to-node/__tests__/FsaNodeFs.test.ts
@@ -355,14 +355,20 @@ describe('.write()', () => {
 
 describe('.exists()', () => {
   test('can works for folders and files', async () => {
-    // const { fs, mfs } = setup({ folder: { file: 'test' }, 'empty-folder': null, 'f.html': 'test' });
-    // const exists = async (path: string): Promise<boolean> => {
-    //   return new Promise((resolve) => {
-    //     fs.exists(path, (exists) => resolve(exists));
-    //   });
-    // };
-    // expect(await exists('/folder')).toBe(true);
-
+    const { fs, mfs } = setup({ folder: { file: 'test' }, 'empty-folder': null, 'f.html': 'test' });
+    const exists = async (path: string): Promise<boolean> => {
+      return new Promise((resolve) => {
+        fs.exists(path, (exists) => resolve(exists));
+      });
+    };
+    expect(await exists('/folder')).toBe(true);
+    expect(await exists('/folder/file')).toBe(true);
+    expect(await exists('/folder/not-a-file')).toBe(false);
+    expect(await exists('/f.html')).toBe(true);
+    expect(await exists('/empty-folder')).toBe(true);
+    expect(await exists('/')).toBe(true);
+    expect(await exists('/asdf')).toBe(false);
+    expect(await exists('asdf')).toBe(false);
   });
 });