feat: add spaceSurroundingProperties config

deployment/schema.json

@@ -82,6 +82,18 @@
     "object.preferSingleLine": {
       "$ref": "#/definitions/preferSingleLine"
     },
+    "spaceSurroundingProperties": {
+      "description": "Whether to add a space surrounding the properties of single line objects.",
+      "type": "boolean",
+      "default": true,
+      "oneOf": [{
+        "const": true,
+        "description": "Ex. `{ \"key\": \"value\" }`"
+      }, {
+        "const": false,
+        "description": "Ex. `{\"key\": \"value\"}`"
+      }]
+    },
     "trailingCommas": {
       "description": "Whether to use trailing commas.",
       "type": "string",

src/configuration/builder.rs

@@ -98,6 +98,12 @@ impl ConfigurationBuilder {
     self.insert("object.preferSingleLine", value.into())
   }
 
+  /// Whether to add a space surrounding the properties of single line objects.
+  /// Default: `true`
+  pub fn space_surrounding_properties(&mut self, value: bool) -> &mut Self {
+    self.insert("spaceSurroundingProperties", value.into())
+  }
+
   /// Whether to use trailing commas.
   ///
   /// Default: `TrailingCommaKind::Jsonc`
@@ -155,12 +161,13 @@ mod tests {
       .prefer_single_line(true)
       .array_prefer_single_line(true)
       .object_prefer_single_line(false)
+      .space_surrounding_properties(false)
       .trailing_commas(TrailingCommaKind::Always)
       .json_trailing_comma_files(vec!["tsconfig.json".to_string(), ".vscode/settings.json".to_string()])
       .ignore_node_comment_text("deno-fmt-ignore");
 
     let inner_config = config.get_inner_config();
-    assert_eq!(inner_config.len(), 11);
+    assert_eq!(inner_config.len(), 12);
     let diagnostics = resolve_config(inner_config, &GlobalConfiguration::default()).diagnostics;
     assert_eq!(diagnostics.len(), 0);
   }

src/configuration/configuration.rs

@@ -17,6 +17,7 @@ pub struct Configuration {
   pub array_prefer_single_line: bool,
   #[serde(rename = "object.preferSingleLine")]
   pub object_prefer_single_line: bool,
+  pub space_surrounding_properties: bool,
   pub trailing_commas: TrailingCommaKind,
   pub json_trailing_comma_files: Vec<String>,
 }

src/configuration/resolve_config.rs

@@ -93,6 +93,7 @@ pub fn resolve_config(
       prefer_single_line,
       &mut diagnostics,
     ),
+    space_surrounding_properties: get_value(&mut config, "spaceSurroundingProperties", true, &mut diagnostics),
     trailing_commas: get_value(
       &mut config,
       "trailingCommas",

src/generation/generate.rs

@@ -176,8 +176,8 @@ fn gen_object<'a>(obj: &'a Object, context: &mut Context<'a, '_>) -> PrintItems
           prefer_hanging: false,
           force_use_new_lines: force_multi_lines,
           allow_blank_lines: true,
-          single_line_space_at_start: true,
-          single_line_space_at_end: true,
+          single_line_space_at_start: context.config.space_surrounding_properties,
+          single_line_space_at_end: context.config.space_surrounding_properties,
           custom_single_line_separator: None,
           multi_line_options: ir_helpers::MultiLineOptions::surround_newlines_indented(),
           force_possible_newline_at_start: false,

tests/specs/object/Object_SpaceSurroundingProperties_False.txt

@@ -0,0 +1,30 @@
+~~ spaceSurroundingProperties: false ~~
+== should not add a space surrounding the properties of single line objects ==
+{ "prop": 5, "prop2": { "prop3": "test" } }
+
+[expect]
+{"prop": 5, "prop2": {"prop3": "test"}}
+
+== should not affect multi-line objects ==
+{
+  "prop": 5,
+  "prop2": { "prop3": "test" }
+}
+
+[expect]
+{
+  "prop": 5,
+  "prop2": {"prop3": "test"}
+}
+
+== should not affect empty objects ==
+{ "prop": {} }
+
+[expect]
+{"prop": {}}
+
+== should handle block comments adjacent to the braces ==
+{ /* a */ "prop": 5 /* b */ }
+
+[expect]
+{/* a */ "prop": 5 /* b */}

tests/specs/object/Object_SpaceSurroundingProperties_False_PreferSingleLine_True.txt

@@ -0,0 +1,10 @@
+~~ spaceSurroundingProperties: false, object.preferSingleLine: true, lineWidth: 40 ~~
+== should not add a space surrounding the properties when collapsing to a single line ==
+{
+  "prop": {
+    "test": 2
+  }
+}
+
+[expect]
+{"prop": {"test": 2}}

tests/specs/object/Object_SpaceSurroundingProperties_True.txt

@@ -0,0 +1,12 @@
+~~ spaceSurroundingProperties: true ~~
+== should add a space surrounding the properties of single line objects ==
+{"prop": 5, "prop2": {"prop3": "test"}}
+
+[expect]
+{ "prop": 5, "prop2": { "prop3": "test" } }
+
+== should handle block comments adjacent to the braces ==
+{/* a */ "prop": 5 /* b */}
+
+[expect]
+{ /* a */ "prop": 5 /* b */ }