diff --git a/ci/check_all_exposed_funs_tested.roc b/ci/check_all_exposed_funs_tested.roc
index 412c524..704589d 100644
--- a/ci/check_all_exposed_funs_tested.roc
+++ b/ci/check_all_exposed_funs_tested.roc
@@ -22,7 +22,7 @@ main! = |_args|
     # Check if ripgrep is installed
     _ = Cmd.exec!("rg", ["--version"])?
 
-    cwd = Env.cwd!({}) ? |err| FailedToGetCwd(err)
+    cwd = Env.cwd!({}) ? FailedToGetCwd
     Stdout.line!("Current working directory: ${Path.display(cwd)}")?
 
     path_to_platform_main = "platform/main.roc"
@@ -87,7 +87,7 @@ is_function_unused! = |module_name, function_name|
     search_dirs = ["examples", "tests"]
 
     # Check current working directory
-    cwd = Env.cwd!({}) ? |err| FailedToGetCwd2(err)
+    cwd = Env.cwd!({}) ? FailedToGetCwd2
 
     # Check if directories exist
     List.for_each_try!(
diff --git a/examples/todos.roc b/examples/todos.roc
index 4321fcb..583ebcf 100644
--- a/examples/todos.roc
+++ b/examples/todos.roc
@@ -161,7 +161,7 @@ exec_transaction! = |{ begin_stmt, rollback_stmt, end_stmt }, transaction!|
             bindings: [],
         },
     )
-    ? |err| FailedToBeginTransaction(err)
+    ? FailedToBeginTransaction
 
     end_transaction! = |res|
         when res is
@@ -172,7 +172,7 @@ exec_transaction! = |{ begin_stmt, rollback_stmt, end_stmt }, transaction!|
                         bindings: [],
                     },
                 )
-                ? |err| FailedToEndTransaction(err)
+                ? FailedToEndTransaction
 
                 Ok(v)
 
@@ -190,7 +190,7 @@ exec_transaction! = |{ begin_stmt, rollback_stmt, end_stmt }, transaction!|
                     bindings: [],
                 },
             )
-            ? |err| FailedToRollbackTransaction(err)
+            ? FailedToRollbackTransaction
 
             Err(e)
 
diff --git a/tests/dir-test.roc b/tests/dir-test.roc
index 4339b86..59d9d92 100644
--- a/tests/dir-test.roc
+++ b/tests/dir-test.roc
@@ -50,7 +50,7 @@ test_dir_create! = |{}|
 
     # Test creating a single directory
     test_dir_name = "test_dir_create"
-    Dir.create!(test_dir_name) ? |err| DirCreateFailed(err)
+    Dir.create!(test_dir_name) ? DirCreateFailed
     
     # Verify directory exists using ls
     ls_output =
@@ -301,7 +301,7 @@ cleanup_test_dirs! = |dirs_requirement|
 
     when dirs_requirement is
         DirsNeedToExist ->
-            delete_result ? |err| DirDeletionFailed(err)
+            delete_result ? DirDeletionFailed
         DirsMaybeExist ->
             Ok({})?
     
diff --git a/tests/file.roc b/tests/file.roc
index 8e1b308..c7aa19b 100644
--- a/tests/file.roc
+++ b/tests/file.roc
@@ -230,7 +230,7 @@ test_file_exists! = |{}|
     filename = "test_exists.txt"
     File.write_utf8!("", filename)?
 
-    test_file_exists = File.exists!(filename) ? |err| FileExistsCheckFailed(err)
+    test_file_exists = File.exists!(filename) ? FileExistsCheckFailed
 
     if test_file_exists then 
         Stdout.line!("✓ File.exists! returns true for a file that exists")?
@@ -240,7 +240,7 @@ test_file_exists! = |{}|
     # Test that a file that does not exist returns false
     File.delete!(filename)?
 
-    test_file_exists_after_delete = File.exists!(filename) ? |err| FileExistsCheckAfterDeleteFailed(err)
+    test_file_exists_after_delete = File.exists!(filename) ? FileExistsCheckAfterDeleteFailed
 
     if test_file_exists_after_delete then
         Stderr.line!("✗ File.exists! returned true for a file that does not exist")?
@@ -300,7 +300,7 @@ cleanup_test_files! = |files_requirement|
     
     when files_requirement is
         FilesNeedToExist ->
-            delete_result ? |err| FileDeletionFailed(err)
+            delete_result ? FileDeletionFailed
         FilesMaybeExist ->
             Ok({})?
 
diff --git a/tests/path-test.roc b/tests/path-test.roc
index 7bd980b..40e52ba 100644
--- a/tests/path-test.roc
+++ b/tests/path-test.roc
@@ -160,7 +160,7 @@ test_file_operations! = |{}|
     # Verify file exists before deletion
     _ = Cmd.exec!("test", ["-e", "test_to_delete.txt"])?
 
-    Path.delete!(delete_path) ? |err| DeleteFailed(err)
+    Path.delete!(delete_path) ? DeleteFailed
     
     # Verify file is gone after deletion
     exists_after_res = Cmd.exec!("test", ["-e", "test_to_delete.txt"])
@@ -342,7 +342,7 @@ test_path_rename! = |{}|
     new_path = Path.from_str("test_path_rename_new.txt")
     test_file_content = "Content for rename test."
 
-    Path.write_utf8!(test_file_content, original_path) ? |err| WriteOriginalFailed(err)
+    Path.write_utf8!(test_file_content, original_path) ? WriteOriginalFailed
     
     # Rename the file
     when Path.rename!(original_path, new_path) is
@@ -357,12 +357,12 @@ test_path_rename! = |{}|
             else
                 Stdout.line!("✓ Original file no longer exists")?
             
-            new_file_exists = Path.is_file!(new_path) ? |err| NewIsFileFailed(err)
+            new_file_exists = Path.is_file!(new_path) ? NewIsFileFailed
 
             if new_file_exists then
                 Stdout.line!("✓ Renamed file exists")?
                 
-                content = Path.read_utf8!(new_path) ? |err| NewFileReadFailed(err)
+                content = Path.read_utf8!(new_path) ? NewFileReadFailed
 
                 if content == test_file_content then
                     Stdout.line!("✓ Renamed file has correct content")
@@ -382,7 +382,7 @@ test_path_exists! = |{}|
     filename = Path.from_str("test_path_exists.txt")
     Path.write_utf8!("This file exists", filename)?
 
-    file_exists = Path.exists!(filename) ? |err| PathExistsCheckFailed(err)
+    file_exists = Path.exists!(filename) ? PathExistsCheckFailed
 
     if file_exists then 
         Stdout.line!("✓ Path.exists! returns true for a file that exists")?
@@ -392,7 +392,7 @@ test_path_exists! = |{}|
     # Test that a file that does not exist returns false
     Path.delete!(filename)?
 
-    file_exists_after_delete = Path.exists!(filename) ? |err| PathExistsCheckAfterDeleteFailed(err)
+    file_exists_after_delete = Path.exists!(filename) ? PathExistsCheckAfterDeleteFailed
 
     if file_exists_after_delete then
         Stderr.line!("✗ Path.exists! returned true for a file that does not exist")?
@@ -422,23 +422,23 @@ test_is_sym_link! = |{}|
     ln_dir_result = Cmd.new("ln") |> Cmd.args(["-s", "test_directory", "test_symlink_to_dir"]) |> Cmd.exec_output!()
     
     # Test is_sym_link on regular file
-    regular_is_symlink = Path.is_sym_link!(regular_file) ? |err| RegularFileSymlinkCheckFailed(err)
+    regular_is_symlink = Path.is_sym_link!(regular_file) ? RegularFileSymlinkCheckFailed
     
     # Test is_sym_link on directory
-    dir_is_symlink = Path.is_sym_link!(test_dir) ? |err| DirSymlinkCheckFailed(err)
+    dir_is_symlink = Path.is_sym_link!(test_dir) ? DirSymlinkCheckFailed
     
     # Test is_sym_link on symbolic links (if creation succeeded)
     file_link_is_symlink = 
         when ln_file_result is
             Ok(_) ->
-                Path.is_sym_link!(link_to_file) ? |err| FileLinkSymlinkCheckFailed(err)
+                Path.is_sym_link!(link_to_file) ? FileLinkSymlinkCheckFailed
             Err(_) ->
                 Bool.false
     
     dir_link_is_symlink = 
         when ln_dir_result is
             Ok(_) ->
-                Path.is_sym_link!(link_to_dir) ? |err| DirLinkSymlinkCheckFailed(err)
+                Path.is_sym_link!(link_to_dir) ? DirLinkSymlinkCheckFailed
             Err(_) ->
                 Bool.false
     
@@ -480,16 +480,16 @@ test_path_type! = |{}|
     ln_result = Cmd.new("ln") |> Cmd.args(["-s", "test_type_file.txt", "test_type_symlink.txt"]) |> Cmd.exec_output!()
     
     # Test type on regular file
-    file_type = Path.type!(regular_file) ? |err| FileTypeCheckFailed(err)
+    file_type = Path.type!(regular_file) ? FileTypeCheckFailed
     
     # Test type on directory
-    dir_type = Path.type!(test_dir) ? |err| DirTypeCheckFailed(err)
+    dir_type = Path.type!(test_dir) ? DirTypeCheckFailed
     
     # Test type on symbolic link (if creation succeeded)
     symlink_type = 
         when ln_result is
             Ok(_) ->
-                Path.type!(symlink_path) ? |err| SymlinkTypeCheckFailed(err)
+                Path.type!(symlink_path) ? SymlinkTypeCheckFailed
             Err(_) ->
                 IsFile
     
@@ -542,7 +542,7 @@ cleanup_test_files! = |files_requirement|
 
     when files_requirement is
         FilesNeedToExist ->
-            delete_result ? |err| PathDeletionFailed(err)
+            delete_result ? PathDeletionFailed
         FilesMaybeExist ->
             Ok({})?
     
diff --git a/tests/sqlite-test.roc b/tests/sqlite-test.roc
index b43c891..27907c3 100644
--- a/tests/sqlite-test.roc
+++ b/tests/sqlite-test.roc
@@ -52,7 +52,7 @@ run_tests! = |{}|
             col_nullable_f64: Sqlite.nullable_f64("col_nullable_f64"),
             col_nullable_f32: Sqlite.nullable_f32("col_nullable_f32"),
         },
-    }) ? |err| QuerManyFailed(err)
+    }) ? QuerManyFailed
 
     rows_texts_str =
         all_rows
@@ -68,7 +68,7 @@ run_tests! = |{}|
         query: "SELECT COUNT(*) as \"count\" FROM test;",
         bindings: [],
         row: Sqlite.u64("count"),
-    }) ? |err| QueryCountFailed(err)
+    }) ? QueryCountFailed
 
 
     Stdout.line!("Row count: ${Num.to_str(count)}")?
@@ -78,13 +78,13 @@ run_tests! = |{}|
     prepared_count_query = Sqlite.prepare!({
         path: db_path,
         query: "SELECT COUNT(*) as \"count\" FROM test;",
-    }) ? |err| PrepareFailed(err)
+    }) ? PrepareFailed
 
     count_prepared = Sqlite.query_prepared!({
         stmt: prepared_count_query,
         bindings: [],
         row: Sqlite.u64("count"),
-    }) ? |err| QueryPreparedFailed(err)
+    }) ? QueryPreparedFailed
 
 
     Stdout.line!("Row count (prepared): ${Num.to_str(count_prepared)}")?
@@ -94,7 +94,7 @@ run_tests! = |{}|
     prepared_update = Sqlite.prepare!({
         path: db_path,
         query: "UPDATE test SET col_text = :col_text WHERE id = :id;",
-    }) ? |err| PreparedUpdateFailed(err)
+    }) ? PreparedUpdateFailed
 
     Sqlite.execute_prepared!({
         stmt: prepared_update,
@@ -102,7 +102,7 @@ run_tests! = |{}|
             { name: ":id", value: Integer(1) },
             { name: ":col_text", value: String("Updated text 1") },
         ],
-    }) ? |err| ExecutePreparedFailed(err)
+    }) ? ExecutePreparedFailed
 
     Sqlite.execute_prepared!({
         stmt: prepared_update,
@@ -110,7 +110,7 @@ run_tests! = |{}|
             { name: ":id", value: Integer(2) },
             { name: ":col_text", value: String("Updated text 2") },
         ],
-    }) ? |err| ExecutePrepared2Failed(err)
+    }) ? ExecutePrepared2Failed
 
     # Check if the updates were successful
     updated_rows = Sqlite.query_many!({
@@ -118,7 +118,7 @@ run_tests! = |{}|
         query: "SELECT COL_TEXT FROM test;",
         bindings: [],
         rows: Sqlite.str("col_text"),
-    }) ? |err| QueryUpdatedRowsFailed(err)
+    }) ? QueryUpdatedRowsFailed
 
     Stdout.line!("Updated rows: ${Inspect.to_str(updated_rows)}")?
 
@@ -129,7 +129,7 @@ run_tests! = |{}|
             { name: ":id", value: Integer(1) },
             { name: ":col_text", value: String("example text") },
         ],
-    }) ? |err| ExecutePrepared3Failed(err)
+    }) ? ExecutePrepared3Failed
 
     Sqlite.execute_prepared!({
         stmt: prepared_update,
@@ -137,7 +137,7 @@ run_tests! = |{}|
             { name: ":id", value: Integer(2) },
             { name: ":col_text", value: String("sample text") },
         ],
-    }) ? |err| ExecutePrepared4Failed(err)
+    }) ? ExecutePrepared4Failed
 
     # Test tagged_value
     tagged_value_test = Sqlite.query_many!({
@@ -146,7 +146,7 @@ run_tests! = |{}|
         bindings: [],
         # This uses the record builder syntax: https://www.roc-lang.org/examples/RecordBuilder/README.html
         rows: Sqlite.tagged_value("col_text"),
-    }) ? |err| QueryMany2Failed(err)
+    }) ? QueryMany2Failed
 
     Stdout.line!("Tagged value test: ${Inspect.to_str(tagged_value_test)}")?
 
diff --git a/tests/tcp.roc b/tests/tcp.roc
index 18950e6..a8eefd2 100644
--- a/tests/tcp.roc
+++ b/tests/tcp.roc
@@ -64,8 +64,8 @@ test_tcp_functions! = |stream|
     do_not_read_bytes = [100, 111, 32, 110, 111, 116, 32, 114, 101, 97, 100, 32, 112, 97, 115, 116, 32, 109, 101, 65] # "do not read past meA" in bytes
     Tcp.write!(stream, do_not_read_bytes)?
 
-    nineteen_bytes = Tcp.read_up_to!(stream, 19) ? |err| FailedReadUpTo(err)
-    nineteen_bytes_as_str = Str.from_utf8(nineteen_bytes) ? |err| ReadUpToFromUtf8(err)
+    nineteen_bytes = Tcp.read_up_to!(stream, 19) ? FailedReadUpTo
+    nineteen_bytes_as_str = Str.from_utf8(nineteen_bytes) ? ReadUpToFromUtf8
 
     Stdout.line!(
         """
@@ -77,8 +77,8 @@ test_tcp_functions! = |stream|
     )?
     Tcp.write_utf8!(stream, "BC")?
 
-    three_bytes = Tcp.read_exactly!(stream, 3) ? |err| FailedReadExactly(err)
-    three_bytes_as_str = Str.from_utf8(three_bytes) ? |err| ReadExactlyFromUtf8(err)
+    three_bytes = Tcp.read_exactly!(stream, 3) ? FailedReadExactly
+    three_bytes_as_str = Str.from_utf8(three_bytes) ? ReadExactlyFromUtf8
 
     Stdout.line!(
         """
@@ -90,8 +90,8 @@ test_tcp_functions! = |stream|
     )?
     Tcp.write_utf8!(stream, "Line1\nLine2\n")?
 
-    bytes_until = Tcp.read_until!(stream, '\n') ? |err| FailedReadUntil(err)
-    bytes_until_as_str = Str.from_utf8(bytes_until) ? |err| ReadUntilFromUtf8(err)
+    bytes_until = Tcp.read_until!(stream, '\n') ? FailedReadUntil
+    bytes_until_as_str = Str.from_utf8(bytes_until) ? ReadUntilFromUtf8
 
     Stdout.line!("Tcp.read_until yielded: '${bytes_until_as_str}'\n")?