Improves formatting for match cases. (#1994)

Fixes: #1964

Co-authored-by: Andreas Allacher <andreas.allacher@massiveart.com>

Author: AndreasA

src/printer.js

@@ -3047,8 +3047,8 @@ function printNode(path, options, print) {
         const body = armPath.call(print, "body");
         return concat(
           armIdx > 0
-            ? [", ", line, conds, " => ", body]
-            : [line, conds, " => ", body]
+            ? [", ", hardline, conds, " => ", body]
+            : [hardline, conds, " => ", body]
         );
       }, "arms");
       return group(

tests/match/__snapshots__/jsfmt.spec.js.snap

@@ -49,18 +49,34 @@ $really_really_really_long_variable_name = match (getValue()) {
     default => throw new \\InvalidArgumentException("Unknown Value")
 };
 
-$boolStr = match ($v) { true => "true",  false => "false" };
+$boolStr = match ($v) {
+    true => "true",
+    false => "false"
+};
 
 $boolish = match ($v) {
     true, 1 => true,
     false, 0, "", null => false,
     default => null
 };
 
-$a = match (true) { test() => "Good",  test2() => "Two",  default => "fail" };
+$a = match (true) {
+    test() => "Good",
+    test2() => "Two",
+    default => "fail"
+};
 
-$nest = match (match ($a) { true => 1,  false => 2 }) {
-    1 => match ($b) { "ok" => true,  "fail" => false,  default => false },
+$nest = match (
+match ($a) {
+        true => 1,
+        false => 2
+    }
+) {
+    1 => match ($b) {
+        "ok" => true,
+        "fail" => false,
+        default => false
+    },
     2 => "null"
 };
 
@@ -116,18 +132,34 @@ $really_really_really_long_variable_name = match (getValue()) {
     default => throw new \\InvalidArgumentException("Unknown Value"),
 };
 
-$boolStr = match ($v) { true => "true",  false => "false" };
+$boolStr = match ($v) {
+    true => "true",
+    false => "false",
+};
 
 $boolish = match ($v) {
     true, 1 => true,
     false, 0, "", null => false,
     default => null,
 };
 
-$a = match (true) { test() => "Good",  test2() => "Two",  default => "fail" };
+$a = match (true) {
+    test() => "Good",
+    test2() => "Two",
+    default => "fail",
+};
 
-$nest = match (match ($a) { true => 1,  false => 2 }) {
-    1 => match ($b) { "ok" => true,  "fail" => false,  default => false },
+$nest = match (
+match ($a) {
+        true => 1,
+        false => 2,
+    }
+) {
+    1 => match ($b) {
+        "ok" => true,
+        "fail" => false,
+        default => false,
+    },
     2 => "null",
 };