JS pair module support

1 files changed, 56 insertions, 58 deletions

diff --git a/src/gleam/pair.gleam b/src/gleam/pair.gleam
index 246ce8c..6143ee9 100644
--- a/src/gleam/pair.gleam
+++ b/src/gleam/pair.gleam
@@ -1,63 +1,61 @@
-if erlang {
-  /// Returns the first element in a pair.
-  ///
-  /// ## Examples
-  ///
-  ///    > first(#(1, 2))
-  ///    1
-  ///
-  pub fn first(pair: #(a, b)) -> a {
-    let #(a, _) = pair
-    a
-  }
+/// Returns the first element in a pair.
+///
+/// ## Examples
+///
+///    > first(#(1, 2))
+///    1
+///
+pub fn first(pair: #(a, b)) -> a {
+  let #(a, _) = pair
+  a
+}
 
-  /// Returns the second element in a pair.
-  ///
-  /// ## Examples
-  ///
-  ///    > second(#(1, 2))
-  ///    2
-  ///
-  pub fn second(pair: #(a, b)) -> b {
-    let #(_, a) = pair
-    a
-  }
+/// Returns the second element in a pair.
+///
+/// ## Examples
+///
+///    > second(#(1, 2))
+///    2
+///
+pub fn second(pair: #(a, b)) -> b {
+  let #(_, a) = pair
+  a
+}
 
-  /// Returns a new pair with the elements swapped.
-  ///
-  /// ## Examples
-  ///
-  ///    > swap(#(1, 2))
-  ///    #(2, 1)
-  ///
-  pub fn swap(pair: #(a, b)) -> #(b, a) {
-    let #(a, b) = pair
-    #(b, a)
-  }
+/// Returns a new pair with the elements swapped.
+///
+/// ## Examples
+///
+///    > swap(#(1, 2))
+///    #(2, 1)
+///
+pub fn swap(pair: #(a, b)) -> #(b, a) {
+  let #(a, b) = pair
+  #(b, a)
+}
 
-  /// Returns a new pair with the first element having had `with` applied to
-  /// it.
-  ///
-  /// ## Examples
-  ///
-  ///    > #(1, 2) |> map_first(fn(n) { n * 2 })
-  ///    2
-  ///
-  pub fn map_first(of pair: #(a, b), with fun: fn(a) -> c) -> #(c, b) {
-    let #(a, b) = pair
-    #(fun(a), b)
-  }
+/// Returns a new pair with the first element having had `with` applied to
+/// it.
+///
+/// ## Examples
+///
+///    > #(1, 2) |> map_first(fn(n) { n * 2 })
+///    2
+///
+pub fn map_first(of pair: #(a, b), with fun: fn(a) -> c) -> #(c, b) {
+  let #(a, b) = pair
+  #(fun(a), b)
+}
 
-  /// Returns a new pair with the second element having had `with` applied to
-  /// it.
-  ///
-  /// ## Examples
-  ///
-  ///    > #(1, 2) |> map_second(fn(n) { n * 2 })
-  ///    4
-  ///
-  pub fn map_second(of pair: #(a, b), with fun: fn(b) -> c) -> #(a, c) {
-    let #(a, b) = pair
-    #(a, fun(b))
-  }
+/// Returns a new pair with the second element having had `with` applied to
+/// it.
+///
+/// ## Examples
+///
+///    > #(1, 2) |> map_second(fn(n) { n * 2 })
+///    4
+///
+pub fn map_second(of pair: #(a, b), with fun: fn(b) -> c) -> #(a, c) {
+  let #(a, b) = pair
+  #(a, fun(b))
 }