Use correct types for qlpack file

The qlpack file is allowed to have null values for fields, instead of
them being absent. This adds the correct types to the qlpack file
schema.

extensions/ql-vscode/src/model-editor/extension-pack-metadata.schema.json

@@ -6,16 +6,23 @@
       "type": "object",
       "properties": {
         "name": {
-          "type": "string"
+          "type": ["string", "null"]
         },
         "version": {
-          "type": "string"
+          "type": ["string", "null"]
         },
         "extensionTargets": {
-          "type": "object",
-          "additionalProperties": {
-            "type": "string"
-          }
+          "anyOf": [
+            {
+              "type": "object",
+              "additionalProperties": {
+                "type": "string"
+              }
+            },
+            {
+              "type": "null"
+            }
+          ]
         },
         "dataExtensions": {
           "anyOf": [
@@ -27,29 +34,46 @@
             },
             {
               "type": "string"
+            },
+            {
+              "type": "null"
             }
           ]
         },
         "dependencies": {
-          "type": "object",
-          "additionalProperties": {
-            "type": "string"
-          }
+          "anyOf": [
+            {
+              "type": "object",
+              "additionalProperties": {
+                "type": "string"
+              }
+            },
+            {
+              "type": "null"
+            }
+          ]
         },
         "dbscheme": {
-          "type": "string"
+          "type": ["string", "null"]
         },
         "library": {
-          "type": "boolean"
+          "type": ["boolean", "null"]
         },
         "defaultSuite": {
-          "type": "array",
-          "items": {
-            "$ref": "#/definitions/SuiteInstruction"
-          }
+          "anyOf": [
+            {
+              "type": "array",
+              "items": {
+                "$ref": "#/definitions/SuiteInstruction"
+              }
+            },
+            {
+              "type": "null"
+            }
+          ]
         },
         "defaultSuiteFile": {
-          "type": "string"
+          "type": ["string", "null"]
         }
       },
       "required": ["dataExtensions", "extensionTargets", "name", "version"]

extensions/ql-vscode/src/packaging/qlpack-file.schema.json

@@ -6,37 +6,58 @@
       "type": "object",
       "properties": {
         "name": {
-          "type": "string"
+          "type": ["string", "null"]
         },
         "version": {
-          "type": "string"
+          "type": ["string", "null"]
         },
         "dependencies": {
-          "type": "object",
-          "additionalProperties": {
-            "type": "string"
-          }
+          "anyOf": [
+            {
+              "type": "object",
+              "additionalProperties": {
+                "type": "string"
+              }
+            },
+            {
+              "type": "null"
+            }
+          ]
         },
         "extensionTargets": {
-          "type": "object",
-          "additionalProperties": {
-            "type": "string"
-          }
+          "anyOf": [
+            {
+              "type": "object",
+              "additionalProperties": {
+                "type": "string"
+              }
+            },
+            {
+              "type": "null"
+            }
+          ]
         },
         "dbscheme": {
-          "type": "string"
+          "type": ["string", "null"]
         },
         "library": {
-          "type": "boolean"
+          "type": ["boolean", "null"]
         },
         "defaultSuite": {
-          "type": "array",
-          "items": {
-            "$ref": "#/definitions/SuiteInstruction"
-          }
+          "anyOf": [
+            {
+              "type": "array",
+              "items": {
+                "$ref": "#/definitions/SuiteInstruction"
+              }
+            },
+            {
+              "type": "null"
+            }
+          ]
         },
         "defaultSuiteFile": {
-          "type": "string"
+          "type": ["string", "null"]
         },
         "dataExtensions": {
           "anyOf": [
@@ -48,6 +69,9 @@
             },
             {
               "type": "string"
+            },
+            {
+              "type": "null"
             }
           ]
         }

extensions/ql-vscode/src/packaging/qlpack-file.ts

@@ -4,13 +4,13 @@ import { SuiteInstruction } from "./suite-instruction";
  * The qlpack pack file, either in qlpack.yml or in codeql-pack.yml.
  */
 export interface QlPackFile {
-  name?: string;
-  version?: string;
-  dependencies?: Record<string, string>;
-  extensionTargets?: Record<string, string>;
-  dbscheme?: string;
-  library?: boolean;
-  defaultSuite?: SuiteInstruction[];
-  defaultSuiteFile?: string;
-  dataExtensions?: string[] | string;
+  name?: string | null;
+  version?: string | null;
+  dependencies?: Record<string, string> | null;
+  extensionTargets?: Record<string, string> | null;
+  dbscheme?: string | null;
+  library?: boolean | null;
+  defaultSuite?: SuiteInstruction[] | null;
+  defaultSuiteFile?: string | null;
+  dataExtensions?: string[] | string | null;
 }