add fs/exists (denoland/deno_std#260)

Original: https://github.com/denoland/deno_std/commit/142a1c6cf890e5c7626c4c934496fae1eee01715

1 files changed, 27 insertions, 0 deletions

diff --git a/fs/exists.ts b/fs/exists.ts
new file mode 100644
index 000000000..aa961037d
--- /dev/null
+++ b/fs/exists.ts
@@ -0,0 +1,27 @@
+// Copyright 2018-2019 the Deno authors. All rights reserved. MIT license.
+/**
+ * Test whether or not the given path exists by checking with the file system
+ * @export
+ * @param {string} filePath
+ * @returns {Promise<boolean>}
+ */
+export async function exists(filePath: string): Promise<boolean> {
+  return Deno.stat(filePath)
+    .then(() => true)
+    .catch(() => false);
+}
+
+/**
+ * Test whether or not the given path exists by checking with the file system
+ * @export
+ * @param {string} filePath
+ * @returns {boolean}
+ */
+export function existsSync(filePath: string): boolean {
+  try {
+    Deno.statSync(filePath);
+    return true;
+  } catch {
+    return false;
+  }
+}