Merge pull request #20374 from asgerf/js/typescript-5.9

JS: Support TypeScript 5.9 and support 'import defer' syntax

javascript/ql/lib/semmle/javascript/ES2015Modules.qll

@@ -151,6 +151,14 @@ class ImportDeclaration extends Stmt, Import, @import_declaration {
   /** Holds if this is declared with the `type` keyword, so it only imports types. */
   predicate isTypeOnly() { has_type_keyword(this) }
 
+  /**
+   * Holds if this is declared with the `defer` keyword, for example:
+   * ```ts
+   * import defer * as f from "somewhere";
+   * ```
+   */
+  predicate isDeferredImport() { has_defer_keyword(this) }
+
   override string getAPrimaryQlClass() { result = "ImportDeclaration" }
 }
 

javascript/ql/lib/semmlecode.javascript.dbscheme

@@ -516,6 +516,7 @@ has_private_keyword (int id: @property ref);
 has_protected_keyword (int id: @property ref);
 has_readonly_keyword (int id: @property ref);
 has_type_keyword (int id: @type_keyword_operand ref);
+has_defer_keyword (int id: @import_declaration ref);
 is_optional_member (int id: @property ref);
 has_definite_assignment_assertion (int id: @field_or_vardeclarator ref);
 is_optional_parameter_declaration (unique int parameter: @pattern ref);

javascript/ql/lib/semmlecode.javascript.dbscheme.stats

@@ -4319,6 +4319,17 @@
 <dependencies/>
 </relation>
 <relation>
+<name>has_defer_keyword</name>
+<cardinality>1000</cardinality>
+<columnsizes>
+<e>
+<k>id</k>
+<v>1000</v>
+</e>
+</columnsizes>
+<dependencies/>
+</relation>
+<relation>
 <name>is_optional_member</name>
 <cardinality>3668</cardinality>
 <columnsizes>

javascript/ql/lib/upgrades/76a926a00d5f3bc199c203a1437796fd7b2835ba/upgrade.properties

@@ -0,0 +1,2 @@
+description: add support for deferred imports
+compatibility: backwards