Drop ujson and switch to orjson

Implemented as requested in this comment:
python-lsp/python-lsp-server#579 (review)

Author: rumpelsepp

Diff for: examples/langserver.py

@@ -5,8 +5,8 @@
 from pylsp_jsonrpc import dispatchers, endpoint
 
 try:
-    import ujson as json
-except Exception:  # pylint: disable=broad-except
+    import orjson as json
+except ImportError:
     import json
 
 log = logging.getLogger(__name__)

Diff for: examples/langserver_ext.py

@@ -7,8 +7,8 @@
 from pylsp_jsonrpc import streams
 
 try:
-    import ujson as json
-except Exception:  # pylint: disable=broad-except
+    import orjson as json
+except ImportError:
     import json
 
 log = logging.getLogger(__name__)

Diff for: pylsp_jsonrpc/streams.py

@@ -5,8 +5,8 @@
 import threading
 
 try:
-    import ujson as json
-except Exception:  # pylint: disable=broad-except
+    import orjson as json
+except ImportError:
     import json
 
 log = logging.getLogger(__name__)

Diff for: pyproject.toml

@@ -11,7 +11,7 @@ authors = [{name = "Python Language Server Contributors"}]
 description = "JSON RPC 2.0 server library"
 license = {text = "MIT"}
 requires-python = ">=3.8"
-dependencies = ["ujson>=3.0.0"]
+dependencies = ["orjson>=3.10.0"]
 dynamic = ["version"]
 classifiers = [
     "License :: OSI Approved :: MIT License",

Diff for: test/test_streams.py

@@ -77,25 +77,20 @@ def test_reader_bad_json(rfile, reader):
 
 
 def test_writer(wfile, writer):
-    writer.write({
+    data = {
         'id': 'hello',
         'method': 'method',
         'params': {}
-    })
-    if 'ujson' in sys.modules:
-        assert wfile.getvalue() == (
-            b'Content-Length: 44\r\n'
-            b'Content-Type: application/vscode-jsonrpc; charset=utf8\r\n'
-            b'\r\n'
-            b'{"id":"hello","method":"method","params":{}}'
-        )
-    else:
-        assert wfile.getvalue() == (
-            b'Content-Length: 49\r\n'
-            b'Content-Type: application/vscode-jsonrpc; charset=utf8\r\n'
-            b'\r\n'
-            b'{"id": "hello", "method": "method", "params": {}}'
-        )
+    }
+    writer.write(data)
+
+    raw_result = wfile.getvalue().decode()
+    raw_result_lines = raw_result.split()
+
+    assert raw_result_lines[0].split(":") == "Content-Length"
+    assert raw_result_lines[1] == 'Content-Type: application/vscode-jsonrpc; charset=utf8'
+    assert raw_result_lines[2] == ''
+    assert json.loads(raw_result_lines[3]) == data
 
 
 class JsonDatetime(datetime.datetime):