Add support for files with JsDoc type definitions

tsc/src/lsif.ts

@@ -3479,6 +3479,21 @@ class Visitor {
 	}
 
 	private endVisitSourceFile(sourceFile: ts.SourceFile): void {
+		if (sourceFile.endOfFileToken) {
+			// Check if we have some dangling JSDoc comments not attached
+			// to any previous statement
+			const jsDoc = tss.Node.getJsDoc(sourceFile.endOfFileToken);
+			if (jsDoc !== undefined) {
+				for (const doc of jsDoc) {
+					const tags = doc.tags;
+					if (tags !== undefined) {
+						for (const tag of tags) {
+							this.handleSymbol(this.tsProject.getSymbolAtLocation(tag), tag);
+						}
+					}
+				}
+			}
+		}
 		if (this.isFullContentIgnored(sourceFile)) {
 			return;
 		}

tsc/src/typescripts.ts

@@ -272,10 +272,18 @@ interface InternalNode extends ts.Node {
 	symbol?: ts.Symbol;
 }
 
+interface InternalJSDocContainer extends ts.JSDocContainer {
+	jsDoc?: ts.JSDoc[];
+}
+
 export namespace Node {
 	export function getSymbol(node: ts.Node): ts.Symbol | undefined {
 		return (node as InternalNode).symbol;
 	}
+
+	export function getJsDoc(node: ts.Token<ts.SyntaxKind.EndOfFileToken>): ts.JSDoc[] | undefined {
+		return (node as InternalJSDocContainer).jsDoc;
+	}
 }