feat: make all backends node streams

this greatly simplifies the code

closes #128

.vscode/launch.json

@@ -4,6 +4,25 @@
   // For more information, visit: https://go.microsoft.com/fwlink/?linkid=830387
   "version": "0.2.0",
   "configurations": [
+    {
+      "name": "Unit test",
+      "args": "./test/unit/backend.test.ts",
+      "request": "launch",
+      "skipFiles": [
+        "<node_internals>/**"
+      ],
+      "type": "node",
+      // "runtimeExecutable": "tsx",
+      "runtimeArgs": [
+        "--import",
+        "tsx",
+        "--import",
+        "./test/unit/automocks.ts",
+        "--test-name-pattern",
+        "parquet-tools backend tests supports cancellation",
+        "--test"
+      ]
+    },
     {
       "name": "Extension Tests",
       "type": "extensionHost",
@@ -45,36 +64,6 @@
       ],
       "trace": true
     },
-    {
-      "type": "node",
-      "name": "vscode-jest-tests.v2",
-      "request": "launch",
-      "args": [
-        "--runInBand",
-        "--watchAll=false",
-        "--config",
-        "test/unit/jest.config.ts",
-        "--testNamePattern",
-        "${jest.testNamePattern}",
-        "--runTestsByPath",
-        "${jest.testFile}"
-      ],
-      "cwd": "${workspaceFolder}",
-      "console": "integratedTerminal",
-      "internalConsoleOptions": "neverOpen",
-      "program": "${workspaceFolder}/node_modules/.bin/jest",
-      "windows": {
-        "program": "${workspaceFolder}/node_modules/jest/bin/jest"
-      },
-      "env": {
-        "DEBUG_MODE": "TRUE"
-      },
-      "outFiles": [
-        "${workspaceFolder}/**/*.js",
-        "!**/node_modules/**",
-        "${workspaceFolder}/node_modules/apache-arrow/**/*.js"
-      ]
-    },
     {
       "name": "vsce",
       "program": "${workspaceFolder}/node_modules/@vscode/vsce/vsce",
@@ -102,33 +91,6 @@
         }
       },
     },
-    {
-      "name": "(Windows) Launch",
-      "type": "cppvsdbg",
-      "request": "launch",
-      "program": "node",
-      "args": [
-        "${workspaceFolder}/node_modules/jest/bin/jest",
-        "test/unit/arrow-backend.test.ts"
-      ],
-      "stopAtEntry": false,
-      "cwd": "${workspaceFolder}",
-      "environment": [
-        {
-          "name": "DEBUG_MODE",
-          "value": "TRUE"
-        }
-      ],
-      "console": "externalTerminal",
-      "presentation": {
-        "hidden": true
-      },
-      "windows": {
-        "presentation": {
-          "hidden": false,
-        }
-      },
-    },
     {
       "name": "Conan Install",
       "type": "debugpy",

.vscode/settings.json

@@ -107,5 +107,11 @@
         "./automocks.ts"
       ]
     }
-  ]
+  ],
+  "[typescript]": {
+    "editor.formatOnSave": true,
+    "editor.codeActionsOnSave": {
+      "source.organizeImports": "always"
+    }
+  }
 }