6 files changed, 28 insertions, 9 deletions
diff --git a/gen/src/gleam@string.erl b/gen/src/gleam@string.erl
index b8ee4e6..d5488f1 100644
--- a/gen/src/gleam@string.erl
+++ b/gen/src/gleam@string.erl
@@ -1,7 +1,7 @@
 -module(gleam@string).
 -compile(no_auto_import).
 
--export([is_empty/1, length/1, reverse/1, replace/3, lowercase/1, uppercase/1, compare/2, contains/2, split/2, append/2, concat/1, repeat/2, join/2]).
+-export([is_empty/1, length/1, reverse/1, replace/3, lowercase/1, uppercase/1, compare/2, contains/2, split/2, append/2, concat/1, repeat/2, join/2, trim/1]).
 
 is_empty(Str) ->
     Str =:= <<""/utf8>>.
@@ -62,3 +62,6 @@ join(Strings, Separator) ->
     gleam@iodata:to_string(
         gleam@iodata:from_strings(gleam@list:intersperse(Strings, Separator))
     ).
+
+trim(A) ->
+    gleam_stdlib:string_trim(A).
diff --git a/gen/test/gleam@int_test.erl b/gen/test/gleam@int_test.erl
index d1f17b0..a81c427 100644
--- a/gen/test/gleam@int_test.erl
+++ b/gen/test/gleam@int_test.erl
@@ -1,14 +1,14 @@
 -module(gleam@int_test).
 -compile(no_auto_import).
 
--export([to_string/0, parse/0, to_base_string/0, compare_test/0, min_test/0, max_test/0, is_even_test/0, is_odd_test/0]).
+-export([to_string_test/0, parse_test/0, to_base_string_test/0, compare_test/0, min_test/0, max_test/0, is_even_test/0, is_odd_test/0]).
 
-to_string() ->
+to_string_test() ->
     gleam@should:equal(gleam@int:to_string(123), <<"123"/utf8>>),
     gleam@should:equal(gleam@int:to_string(-123), <<"-123"/utf8>>),
     gleam@should:equal(gleam@int:to_string(123), <<"123"/utf8>>).
 
-parse() ->
+parse_test() ->
     gleam@should:equal(gleam@int:parse(<<"123"/utf8>>), {ok, 123}),
     gleam@should:equal(gleam@int:parse(<<"-123"/utf8>>), {ok, -123}),
     gleam@should:equal(gleam@int:parse(<<"0123"/utf8>>), {ok, 123}),
@@ -16,7 +16,7 @@ parse() ->
     gleam@should:equal(gleam@int:parse(<<"what"/utf8>>), {error, nil}),
     gleam@should:equal(gleam@int:parse(<<"1.23"/utf8>>), {error, nil}).
 
-to_base_string() ->
+to_base_string_test() ->
     gleam@should:equal(gleam@int:to_base_string(100, 16), <<"64"/utf8>>),
     gleam@should:equal(gleam@int:to_base_string(-100, 16), <<"-64"/utf8>>).
 
diff --git a/gen/test/gleam@string_test.erl b/gen/test/gleam@string_test.erl
index c6e423e..b1bc7b0 100644
--- a/gen/test/gleam@string_test.erl
+++ b/gen/test/gleam@string_test.erl
@@ -1,7 +1,7 @@
 -module(gleam@string_test).
 -compile(no_auto_import).
 
--export([length_test/0, lowercase_test/0, uppercase_test/0, reverse_test/0, split_test/0, replace_test/0, append_test/0, compare_test/0, contains_test/0, concat_test/0, repeat_test/0, join_test/0]).
+-export([length_test/0, lowercase_test/0, uppercase_test/0, reverse_test/0, split_test/0, replace_test/0, append_test/0, compare_test/0, contains_test/0, concat_test/0, repeat_test/0, join_test/0, trim_test/0]).
 
 length_test() ->
     gleam@should:equal(gleam@string:length(<<"ß↑e̊"/utf8>>), 3),
@@ -98,3 +98,9 @@ join_test() ->
         gleam@string:join([<<"Hello"/utf8>>, <<"world!"/utf8>>], <<"-"/utf8>>),
         <<"Hello-world!"/utf8>>
     ).
+
+trim_test() ->
+    gleam@should:equal(
+        gleam@string:trim(<<"  hats  \n"/utf8>>),
+        <<"hats"/utf8>>
+    ).
diff --git a/src/gleam/string.gleam b/src/gleam/string.gleam
index 8c270bc..bde93e2 100644
--- a/src/gleam/string.gleam
+++ b/src/gleam/string.gleam
@@ -309,7 +309,7 @@ pub fn join(strings: List(String), with separator: String) -> String {
 //
 //
 // pub fn pad_right(string: String, to size: Int, with: String) {}
-// TODO
+
 // Get rid of whitespace on both sides of a String.
 //
 // ## Examples
@@ -317,7 +317,9 @@ pub fn join(strings: List(String), with separator: String) -> String {
 //    "hats"
 //
 //
-// pub fn trim(string: String) -> String {}
+pub external fn trim(String) -> String =
+  "gleam_stdlib" "string_trim"
+
 // TODO
 // Get rid of whitespace on the left of a String.
 //
diff --git a/src/gleam_stdlib.erl b/src/gleam_stdlib.erl
index 49a7e2a..54fcdaa 100644
--- a/src/gleam_stdlib.erl
+++ b/src/gleam_stdlib.erl
@@ -7,7 +7,7 @@
          iodata_append/2, iodata_prepend/2, identity/1, decode_int/1,
          decode_string/1, decode_bool/1, decode_float/1, decode_thunk/1, decode_atom/1,
          decode_list/1, decode_field/2, decode_element/2, parse_int/1, parse_float/1, compare_strings/2,
-         string_contains/2]).
+         string_contains/2, string_trim/1]).
 
 should_equal(Actual, Expected) -> ?assertEqual(Expected, Actual).
 should_not_equal(Actual, Expected) -> ?assertNotEqual(Expected, Actual).
@@ -127,3 +127,5 @@ string_contains(Haystack, Needle) ->
     _ ->
       true
   end.
+
+string_trim(String) -> string:trim(String, both).
diff --git a/test/gleam/string_test.gleam b/test/gleam/string_test.gleam
index 15ace70..9e1b0b1 100644
--- a/test/gleam/string_test.gleam
+++ b/test/gleam/string_test.gleam
@@ -109,3 +109,9 @@ pub fn join_test() {
   |> string.join(with: "-")
   |> should.equal("Hello-world!")
 }
+
+pub fn trim_test() {
+  "  hats  \n"
+  |> string.trim()
+  |> should.equal("hats")
+}