make getEffectiveTypeParameterDeclarations public (#25472)

Author: sandersn

src/compiler/utilities.ts

@@ -3351,21 +3351,6 @@ namespace ts {
         return node.type || (isInJavaScriptFile(node) ? getJSDocReturnType(node) : undefined);
     }
 
-    /**
-     * Gets the effective type parameters. If the node was parsed in a
-     * JavaScript file, gets the type parameters from the `@template` tag from JSDoc.
-     */
-    export function getEffectiveTypeParameterDeclarations(node: DeclarationWithTypeParameters): ReadonlyArray<TypeParameterDeclaration> {
-        if (isJSDocSignature(node)) {
-            return emptyArray;
-        }
-        if (isJSDocTypeAlias(node)) {
-            Debug.assert(node.parent.kind === SyntaxKind.JSDocComment);
-            return flatMap(node.parent.tags, tag => isJSDocTemplateTag(tag) ? tag.typeParameters : undefined) as ReadonlyArray<TypeParameterDeclaration>;
-        }
-        return node.typeParameters || (isInJavaScriptFile(node) ? getJSDocTypeParameterDeclarations(node) : emptyArray);
-    }
-
     export function getJSDocTypeParameterDeclarations(node: DeclarationWithTypeParameters): ReadonlyArray<TypeParameterDeclaration> {
         return flatMap(getJSDocTags(node), tag => isNonTypeAliasTemplate(tag) ? tag.typeParameters : undefined);
     }
@@ -5053,6 +5038,21 @@ namespace ts {
     export function getAllJSDocTagsOfKind(node: Node, kind: SyntaxKind): ReadonlyArray<JSDocTag> {
         return getJSDocTags(node).filter(doc => doc.kind === kind);
     }
+
+    /**
+     * Gets the effective type parameters. If the node was parsed in a
+     * JavaScript file, gets the type parameters from the `@template` tag from JSDoc.
+     */
+    export function getEffectiveTypeParameterDeclarations(node: DeclarationWithTypeParameters): ReadonlyArray<TypeParameterDeclaration> {
+        if (isJSDocSignature(node)) {
+            return emptyArray;
+        }
+        if (isJSDocTypeAlias(node)) {
+            Debug.assert(node.parent.kind === SyntaxKind.JSDocComment);
+            return flatMap(node.parent.tags, tag => isJSDocTemplateTag(tag) ? tag.typeParameters : undefined) as ReadonlyArray<TypeParameterDeclaration>;
+        }
+        return node.typeParameters || (isInJavaScriptFile(node) ? getJSDocTypeParameterDeclarations(node) : emptyArray);
+    }
 }
 
 // Simple node tests of the form `node.kind === SyntaxKind.Foo`.

tests/baselines/reference/api/tsserverlibrary.d.ts

@@ -6470,11 +6470,6 @@ declare namespace ts {
      * JavaScript file, gets the return type annotation from JSDoc.
      */
     function getEffectiveReturnTypeNode(node: SignatureDeclaration | JSDocSignature): TypeNode | undefined;
-    /**
-     * Gets the effective type parameters. If the node was parsed in a
-     * JavaScript file, gets the type parameters from the `@template` tag from JSDoc.
-     */
-    function getEffectiveTypeParameterDeclarations(node: DeclarationWithTypeParameters): ReadonlyArray<TypeParameterDeclaration>;
     function getJSDocTypeParameterDeclarations(node: DeclarationWithTypeParameters): ReadonlyArray<TypeParameterDeclaration>;
     /**
      * Gets the effective type annotation of the value parameter of a set accessor. If the node
@@ -6787,6 +6782,11 @@ declare namespace ts {
     function getJSDocTags(node: Node): ReadonlyArray<JSDocTag>;
     /** Gets all JSDoc tags of a specified kind, or undefined if not present. */
     function getAllJSDocTagsOfKind(node: Node, kind: SyntaxKind): ReadonlyArray<JSDocTag>;
+    /**
+     * Gets the effective type parameters. If the node was parsed in a
+     * JavaScript file, gets the type parameters from the `@template` tag from JSDoc.
+     */
+    function getEffectiveTypeParameterDeclarations(node: DeclarationWithTypeParameters): ReadonlyArray<TypeParameterDeclaration>;
 }
 declare namespace ts {
     function isNumericLiteral(node: Node): node is NumericLiteral;

tests/baselines/reference/api/typescript.d.ts

@@ -3237,6 +3237,11 @@ declare namespace ts {
     function getJSDocTags(node: Node): ReadonlyArray<JSDocTag>;
     /** Gets all JSDoc tags of a specified kind, or undefined if not present. */
     function getAllJSDocTagsOfKind(node: Node, kind: SyntaxKind): ReadonlyArray<JSDocTag>;
+    /**
+     * Gets the effective type parameters. If the node was parsed in a
+     * JavaScript file, gets the type parameters from the `@template` tag from JSDoc.
+     */
+    function getEffectiveTypeParameterDeclarations(node: DeclarationWithTypeParameters): ReadonlyArray<TypeParameterDeclaration>;
 }
 declare namespace ts {
     function isNumericLiteral(node: Node): node is NumericLiteral;