Language server not reacting on didChange events when using psalm.phar

[thbley]

When using psalm language server as phar-file, the didChange event does not produce publishDiagnostics messages.

Tested with Psalm 4.9.2, PHP 7.4.

For analyzing, I changed:

+++ b/src/Psalm/Internal/LanguageServer/LanguageServer.php
@@ -141,9 +141,11 @@ class LanguageServer extends AdvancedJsonRpc\Dispatcher
                         /** @psalm-suppress MixedAssignment */
                         $result = yield $dispatched;
                     } catch (AdvancedJsonRpc\Error $e) {
+                        error_log($e->__toString());
                         // If a ResponseError is thrown, send it back in the Response
                         $error = $e;
                     } catch (Throwable $e) {
+                        error_log($e->__toString());
                         // If an unexpected error occurred, send back an INTERNAL_ERROR error response
                         $error = new AdvancedJsonRpc\Error(
                             (string) $e,

and got:

[14-Aug-2021 04:59:04 Europe/Berlin] ReflectionException: Class \LanguageServerProtocol\TextDocumentContentChangeEvent does not exist in phar:///home/administrator/code/psalm/build/psalm.phar/vendor/netresearch/jsonmapper/src/JsonMapper.php:539
Stack trace:
#0 phar:///home/administrator/code/psalm/build/psalm.phar/vendor/netresearch/jsonmapper/src/JsonMapper.php(539): ReflectionClass->__construct()
#1 phar:///home/administrator/code/psalm/build/psalm.phar/vendor/netresearch/jsonmapper/src/JsonMapper.php(368): _HumbugBoxe13a1d0087b5\JsonMapper->createInstance()
#2 phar:///home/administrator/code/psalm/build/psalm.phar/vendor/felixfbecker/advanced-json-rpc/lib/Dispatcher.php(146): _HumbugBoxe13a1d0087b5\JsonMapper->mapArray()
#3 phar:///home/administrator/code/psalm/build/psalm.phar/src/Psalm/Internal/LanguageServer/LanguageServer.php(118): _HumbugBoxe13a1d0087b5\AdvancedJsonRpc\Dispatcher->dispatch()
#4 [internal function]: Psalm\Internal\LanguageServer\LanguageServer->Psalm\Internal\LanguageServer\{closure}()
#5 phar:///home/administrator/code/psalm/build/psalm.phar/vendor/amphp/amp/lib/Coroutine.php(53): Generator->current()
#6 phar:///home/administrator/code/psalm/build/psalm.phar/vendor/amphp/amp/lib/functions.php(91): _HumbugBoxe13a1d0087b5\Amp\Coroutine->__construct()
#7 phar:///home/administrator/code/psalm/build/psalm.phar/vendor/amphp/amp/lib/functions.php(58): _HumbugBoxe13a1d0087b5\Amp\call()
#8 phar:///home/administrator/code/psalm/build/psalm.phar/src/Psalm/Internal/LanguageServer/EmitterTrait.php(75): _HumbugBoxe13a1d0087b5\Amp\{closure}()
#9 phar:///home/administrator/code/psalm/build/psalm.phar/src/Psalm/Internal/LanguageServer/ProtocolStreamReader.php(106): Psalm\Internal\LanguageServer\ProtocolStreamReader->emit()
#10 phar:///home/administrator/code/psalm/build/psalm.phar/src/Psalm/Internal/LanguageServer/ProtocolStreamReader.php(62): Psalm\Internal\LanguageServer\ProtocolStreamReader->readMessages()
#11 [internal function]: Psalm\Internal\LanguageServer\ProtocolStreamReader->Psalm\Internal\LanguageServer\{closure}()
#12 phar:///home/administrator/code/psalm/build/psalm.phar/vendor/amphp/amp/lib/Coroutine.php(96): Generator->send()
#13 phar:///home/administrator/code/psalm/build/psalm.phar/vendor/amphp/amp/lib/Internal/Placeholder.php(125): _HumbugBoxe13a1d0087b5\Amp\Coroutine->_HumbugBoxe13a1d0087b5\Amp\{closure}()
#14 phar:///home/administrator/code/psalm/build/psalm.phar/vendor/amphp/amp/lib/Deferred.php(49): class@anonymous->resolve()
#15 phar:///home/administrator/code/psalm/build/psalm.phar/vendor/amphp/byte-stream/lib/ResourceInputStream.php(76): _HumbugBoxe13a1d0087b5\Amp\Deferred->resolve()
#16 phar:///home/administrator/code/psalm/build/psalm.phar/vendor/amphp/amp/lib/Loop/NativeDriver.php(265): _HumbugBoxe13a1d0087b5\Amp\ByteStream\ResourceInputStream::_HumbugBoxe13a1d0087b5\Amp\ByteStream\{closure}()
#17 phar:///home/administrator/code/psalm/build/psalm.phar/vendor/amphp/amp/lib/Loop/NativeDriver.php(97): _HumbugBoxe13a1d0087b5\Amp\Loop\NativeDriver->selectStreams()
#18 phar:///home/administrator/code/psalm/build/psalm.phar/vendor/amphp/amp/lib/Loop/Driver.php(117): _HumbugBoxe13a1d0087b5\Amp\Loop\NativeDriver->dispatch()
#19 phar:///home/administrator/code/psalm/build/psalm.phar/vendor/amphp/amp/lib/Loop/Driver.php(61): _HumbugBoxe13a1d0087b5\Amp\Loop\Driver->tick()
#20 phar:///home/administrator/code/psalm/build/psalm.phar/vendor/amphp/amp/lib/Loop.php(87): _HumbugBoxe13a1d0087b5\Amp\Loop\Driver->run()
#21 phar:///home/administrator/code/psalm/build/psalm.phar/src/Psalm/Internal/Analyzer/ProjectAnalyzer.php(382): _HumbugBoxe13a1d0087b5\Amp\Loop::run()
#22 phar:///home/administrator/code/psalm/build/psalm.phar/src/Psalm/Internal/Cli/LanguageServer.php(213): Psalm\Internal\Analyzer\ProjectAnalyzer->server()
#23 phar:///home/administrator/code/psalm/build/psalm.phar/src/Psalm/Internal/Cli/Psalm.php(605): Psalm\Internal\Cli\LanguageServer::run()
#24 phar:///home/administrator/code/psalm/build/psalm.phar/src/Psalm/Internal/Cli/Psalm.php(147): Psalm\Internal\Cli\Psalm::forwardCliCall()
#25 phar:///home/administrator/code/psalm/build/psalm.phar/psalm(6): Psalm\Internal\Cli\Psalm::run()
#26 /home/administrator/code/psalm/build/psalm.phar(14): require('phar:///home/ad...')

Here is the test script I used: https://gist.github.com/thomasbley/a657a1046830a7da5e302675dba4ea70

[tm1000]

Reference PR #6302