From d31f06a3292584b8e2ff8d6763b2e30b3cb77f7a Mon Sep 17 00:00:00 2001
From: Hexagon <hexagon@56k.guru>
Date: Mon, 8 Apr 2024 19:30:13 +0000
Subject: [PATCH] Add chdir and cwd

---
 README.md             |  2 ++
 deno.json             |  4 ++--
 src/ops/chdir.test.ts | 25 +++++++++++++++++++++++++
 src/ops/chdir.ts      | 30 ++++++++++++++++++++++++++++++
 src/ops/cwd.ts        | 28 ++++++++++++++++++++++++++++
 src/ops/mod.ts        |  2 ++
 6 files changed, 89 insertions(+), 2 deletions(-)
 create mode 100644 src/ops/chdir.test.ts
 create mode 100644 src/ops/chdir.ts
 create mode 100644 src/ops/cwd.ts

diff --git a/README.md b/README.md
index 31c41c0..3b4dfaa 100644
--- a/README.md
+++ b/README.md
@@ -92,6 +92,8 @@ console.log(await dirpath("config"));
 | unlink    | X    | X    | X   | node:fs/promises    |
 | dirpath   | X    | X    | X   | @cross/dir          |
 | mkdir     | X    | X    | X   | node:fs/promises    |
+| cwd       | X    | X    | X   | custom              |
+| chdir     | X    | X    | X   | custom              |
 | mktempdir | X    | X    | X   | custom              |
 | rm        | X    | X    | X   | node:fs/promises    |
 | rmdir     | X    | X    | X   | node:fs/promises    |
diff --git a/deno.json b/deno.json
index 75c8948..6fb272a 100644
--- a/deno.json
+++ b/deno.json
@@ -1,6 +1,6 @@
 {
   "name": "@cross/fs",
-  "version": "0.0.8",
+  "version": "0.0.9",
   "exports": {
     ".": "./mod.ts",
     "./stat": "./src/stat/mod.ts",
@@ -12,7 +12,7 @@
     "@cross/env": "jsr:@cross/env@^1.0.0",
     "@cross/runtime": "jsr:@cross/runtime@^1.0.0",
     "@cross/test": "jsr:@cross/test@^0.0.9",
-    "@cross/utils": "jsr:@cross/utils@^0.9.0",
+    "@cross/utils": "jsr:@cross/utils@^0.10.0",
     "@std/assert": "jsr:@std/assert@^0.221.0",
     "@std/path": "jsr:@std/path@^0.221.0"
   },
diff --git a/src/ops/chdir.test.ts b/src/ops/chdir.test.ts
new file mode 100644
index 0000000..7c5ef6b
--- /dev/null
+++ b/src/ops/chdir.test.ts
@@ -0,0 +1,25 @@
+import { assertEquals } from "@std/assert";
+import { test } from "@cross/test";
+import { chdir, cwd } from "./mod.ts";
+import { mktempdir, rmdir } from "./mod.ts";
+
+test("chdir successfully changes working directory", async () => {
+  // Set up a temporary working directory
+  const tempDir = await mktempdir();
+
+  try {
+    const originalCwd = cwd();
+
+    // Change to the temporary directory
+    chdir(tempDir);
+
+    // Assert that the current working directory has changed
+    assertEquals(cwd(), tempDir);
+
+    // Change back to original working directory for cleanup
+    chdir(originalCwd);
+  } finally {
+    // Clean up temporary directory
+    await rmdir(tempDir);
+  }
+});
diff --git a/src/ops/chdir.ts b/src/ops/chdir.ts
new file mode 100644
index 0000000..6878290
--- /dev/null
+++ b/src/ops/chdir.ts
@@ -0,0 +1,30 @@
+import { CurrentRuntime, Runtime } from "@cross/runtime";
+
+/**
+ * Changes the current working directory in a cross-runtime compatible manner.
+ *
+ * @param {string} path - The new working directory path.
+ * @throws If the directory change fails or unsupported runtime is encountered.
+ * @example
+ * import { chdir } from "@cross/fs"; // Assuming you place it in a cross/fs module
+ *
+ * try {
+ *   chdir("/home/user/projects");
+ *   console.log("Current working directory changed successfully.");
+ * } catch (error) {
+ *   console.error("Failed to change directory:", error);
+ * }
+ */
+export function chdir(path: string): void {
+  if (CurrentRuntime === Runtime.Deno) {
+    //@ts-ignore cross-runtime
+    Deno.chdir(path);
+  } else if (
+    CurrentRuntime === Runtime.Node || CurrentRuntime === Runtime.Bun
+  ) {
+    //@ts-ignore cross-runtime
+    process.chdir(path);
+  } else {
+    throw new Error("Cannot change directory in the current runtime.");
+  }
+}
diff --git a/src/ops/cwd.ts b/src/ops/cwd.ts
new file mode 100644
index 0000000..02199d3
--- /dev/null
+++ b/src/ops/cwd.ts
@@ -0,0 +1,28 @@
+import { CurrentRuntime, Runtime } from "@cross/runtime";
+
+/**
+ * Returns the current working directory in a cross-runtime compatible manner.
+ *
+ * @returns {string} The current working directory path.
+ * @throws
+ * @example
+ * // import { cwd } from "@cross/utils";
+ *
+ * const cwd = cwd();
+ * console.log("The current working directory is:", cwd);
+ */
+export function cwd(): string {
+  if (CurrentRuntime === Runtime.Deno) {
+    //@ts-ignore cross-runtime
+    return Deno.cwd();
+  } else if (
+    CurrentRuntime === Runtime.Node || CurrentRuntime === Runtime.Bun
+  ) {
+    //@ts-ignore cross-runtime
+    return process.cwd();
+  } else {
+    throw new Error(
+      "Cannot determine working directory using current runtime.",
+    );
+  }
+}
diff --git a/src/ops/mod.ts b/src/ops/mod.ts
index f1b6368..3f71eaf 100644
--- a/src/ops/mod.ts
+++ b/src/ops/mod.ts
@@ -15,3 +15,5 @@ export {
 
 export * from "./mktempdir.ts";
 export * from "./tempfile.ts";
+export * from "./chdir.ts";
+export * from "./cwd.ts";