feat(json): change default indent from 2 to 4

This is not a breaking change for user code
that follows current type annotations.

Allow boolean `json_indent` in public functions.
Now this default is part of the API.

example.json

@@ -1,57 +1,57 @@
 {
-  "title": "TOML Example",
-  "owner": {
-    "name": "Tom Preston-Werner",
-    "organization": "GitHub",
-    "bio": "GitHub Cofounder & CEO\nLikes tater tots and beer.",
-    "dob": "1979-05-27T07:32:00+00:00"
-  },
-  "database": {
-    "server": "192.168.1.1",
-    "ports": [
-      8001,
-      8001,
-      8002
-    ],
-    "connection_max": 5000,
-    "enabled": true
-  },
-  "servers": {
-    "alpha": {
-      "ip": "10.0.0.1",
-      "dc": "eqdc10"
+    "title": "TOML Example",
+    "owner": {
+        "name": "Tom Preston-Werner",
+        "organization": "GitHub",
+        "bio": "GitHub Cofounder & CEO\nLikes tater tots and beer.",
+        "dob": "1979-05-27T07:32:00+00:00"
     },
-    "beta": {
-      "ip": "10.0.0.2",
-      "dc": "eqdc10",
-      "country": "中国"
-    }
-  },
-  "clients": {
-    "data": [
-      [
-        "gamma",
-        "delta"
-      ],
-      [
-        1,
-        2
-      ]
-    ],
-    "hosts": [
-      "alpha",
-      "omega"
-    ]
-  },
-  "products": [
-    {
-      "name": "Hammer",
-      "sku": 738594937
+    "database": {
+        "server": "192.168.1.1",
+        "ports": [
+            8001,
+            8001,
+            8002
+        ],
+        "connection_max": 5000,
+        "enabled": true
+    },
+    "servers": {
+        "alpha": {
+            "ip": "10.0.0.1",
+            "dc": "eqdc10"
+        },
+        "beta": {
+            "ip": "10.0.0.2",
+            "dc": "eqdc10",
+            "country": "中国"
+        }
     },
-    {
-      "name": "Nail",
-      "sku": 284758393,
-      "color": "gray"
-    }
-  ]
+    "clients": {
+        "data": [
+            [
+                "gamma",
+                "delta"
+            ],
+            [
+                1,
+                2
+            ]
+        ],
+        "hosts": [
+            "alpha",
+            "omega"
+        ]
+    },
+    "products": [
+        {
+            "name": "Hammer",
+            "sku": 738594937
+        },
+        {
+            "name": "Nail",
+            "sku": 284758393,
+            "color": "gray"
+        }
+    ]
 }

src/remarshal/main.py

@@ -56,6 +56,7 @@ class YAMLOptions:
 __all__ = [
     "DEFAULT_MAX_VALUES",
     "FORMATS",
+    "JSON_INDENT_TRUE",
     "RICH_ARGPARSE_STYLES",
     "Document",
     "TooManyValuesError",
@@ -75,6 +76,7 @@ class YAMLOptions:
 }
 DEFAULT_MAX_VALUES = 1000000
 FORMATS = ["cbor", "json", "msgpack", "toml", "yaml"]
+JSON_INDENT_TRUE = 4
 UTF_8 = "utf-8"
 
 RICH_ARGPARSE_STYLES: dict[str, StyleType] = {
@@ -547,7 +549,7 @@ def _encode_json(
     stringify: bool,
 ) -> str:
     if indent is True:
-        indent = 2
+        indent = JSON_INDENT_TRUE
 
     separators = (",", ": " if indent else ":")
 
@@ -668,7 +670,7 @@ def encode(
     output_format: str,
     data: Document,
     *,
-    json_indent: int | None,
+    json_indent: bool | int | None,
     sort_keys: bool,
     stringify: bool,
     yaml_options: YAMLOptions,
@@ -712,7 +714,7 @@ def remarshal(
     input: Path | str,
     output: Path | str,
     *,
-    json_indent: int | None = None,
+    json_indent: bool | int | None = None,
     max_values: int = DEFAULT_MAX_VALUES,
     sort_keys: bool = True,
     stringify: bool = False,

tests/date.json

@@ -1,3 +1,3 @@
 {
-  "foo": "2012-12-12"
+    "foo": "2012-12-12"
 }

tests/datetime-local.json

@@ -1,3 +1,3 @@
 {
-  "foo": "2012-12-12T12:34:56"
+    "foo": "2012-12-12T12:34:56"
 }

tests/datetime-tz.json

@@ -1,3 +1,3 @@
 {
-  "foo": "2012-12-12T12:34:56+00:00"
+    "foo": "2012-12-12T12:34:56+00:00"
 }

tests/long-line.json

@@ -1,6 +1,6 @@
 {
-  "balanceHeld": {
-    "description": "Balance of the account held for transferring to other users (in cents) and then a bunch more text after that",
-    "type": "integer"
-  }
+    "balanceHeld": {
+        "description": "Balance of the account held for transferring to other users (in cents) and then a bunch more text after that",
+        "type": "integer"
+    }
 }

tests/order.json

@@ -1,5 +1,5 @@
 {
-  "foo": 1,
-  "bar": 2,
-  "baz": 3
+    "foo": 1,
+    "bar": 2,
+    "baz": 3
 }

tests/sorted.json

@@ -1,5 +1,5 @@
 {
-  "bar": 2,
-  "baz": 3,
-  "foo": 1
+    "bar": 2,
+    "baz": 3,
+    "foo": 1
 }

tests/test_remarshal.py

@@ -94,7 +94,7 @@ def _convert_and_read(
     output_format: str,
     *,
     output_filename: str,
-    json_indent: int | None = 2,
+    json_indent: bool | int | None = True,
     sort_keys: bool = False,
     stringify: bool = False,
     transform: Callable[[remarshal.Document], remarshal.Document] | None = None,

tests/time.json

@@ -1,3 +1,3 @@
 {
-  "foo": "12:34:56"
+    "foo": "12:34:56"
 }