fix(purescript-node#81): add copyFile_NO_FLAGS, make it default

Author: srghma

src/Node/FS/Constants.js

@@ -1,17 +1,13 @@
 import { constants } from "node:fs";
 
 export const f_OK = constants.F_OK;
-
 export const r_OK = constants.R_OK;
-
 export const w_OK = constants.W_OK;
-
 export const x_OK = constants.X_OK;
 
+export const copyFile_NO_FLAGS = 0;
 export const copyFile_EXCL = constants.COPYFILE_EXCL;
-
 export const copyFile_FICLONE = constants.COPYFILE_FICLONE;
-
 export const copyFile_FICLONE_FORCE = constants.COPYFILE_FICLONE_FORCE;
 
 export const appendCopyMode = (l, r) => l | r;

src/Node/FS/Constants.purs

@@ -7,7 +7,7 @@ import Data.Function.Uncurried (Fn2, runFn2)
 -- | the mode parameter passed to `access` and `accessSync`.
 foreign import data AccessMode :: Type
 
--- | the file is visible to the calling process. 
+-- | the file is visible to the calling process.
 -- | This is useful for determining if a file exists, but says nothing about rwx permissions. Default if no mode is specified.
 foreign import f_OK :: AccessMode
 
@@ -25,6 +25,9 @@ defaultAccessMode = f_OK :: AccessMode
 -- | A constant used in `copyFile`.
 foreign import data CopyMode :: Type
 
+-- | By default, `dest` is overwritten if it already exists.
+foreign import copyFile_NO_FLAGS :: CopyMode
+
 -- | If present, the copy operation will fail with an error if the destination path already exists.
 foreign import copyFile_EXCL :: CopyMode
 
@@ -34,7 +37,7 @@ foreign import copyFile_FICLONE :: CopyMode
 -- |  	If present, the copy operation will attempt to create a copy-on-write reflink. If the underlying platform does not support copy-on-write, then the operation will fail with an error.
 foreign import copyFile_FICLONE_FORCE :: CopyMode
 
-defaultCopyMode = copyFile_EXCL :: CopyMode
+defaultCopyMode = copyFile_NO_FLAGS :: CopyMode
 
 foreign import appendCopyMode :: Fn2 CopyMode CopyMode CopyMode
 
@@ -88,4 +91,3 @@ fileFlagsToNode ff = case ff of
   AX -> "ax"
   A_PLUS -> "a+"
   AX_PLUS -> "ax+"
-