Fixed crash when cross-file reusing nodes for class member snippet completions (#58216)

Author: Andarist

src/compiler/emitter.ts

@@ -2088,7 +2088,7 @@ export function createPrinter(printerOptions: PrinterOptions = {}, handlers: Pri
     // SyntaxKind.TemplateMiddle
     // SyntaxKind.TemplateTail
     function emitLiteral(node: LiteralLikeNode, jsxAttributeEscape: boolean) {
-        const text = getLiteralTextOfNode(node, printerOptions.neverAsciiEscape, jsxAttributeEscape);
+        const text = getLiteralTextOfNode(node, /*sourceFile*/ undefined, printerOptions.neverAsciiEscape, jsxAttributeEscape);
         if (
             (printerOptions.sourceMap || printerOptions.inlineSourceMap)
             && (node.kind === SyntaxKind.StringLiteral || isTemplateLiteralKind(node.kind))
@@ -2641,7 +2641,7 @@ export function createPrinter(printerOptions: PrinterOptions = {}, handlers: Pri
         expression = skipPartiallyEmittedExpressions(expression);
         if (isNumericLiteral(expression)) {
             // check if numeric literal is a decimal literal that was originally written with a dot
-            const text = getLiteralTextOfNode(expression as LiteralExpression, /*neverAsciiEscape*/ true, /*jsxAttributeEscape*/ false);
+            const text = getLiteralTextOfNode(expression as LiteralExpression, /*sourceFile*/ undefined, /*neverAsciiEscape*/ true, /*jsxAttributeEscape*/ false);
             // If the number will be printed verbatim and it doesn't already contain a dot or an exponent indicator, add one
             // if the expression doesn't have any comments that will be emitted.
             return !(expression.numericLiteralFlags & TokenFlags.WithSpecifier)
@@ -5169,7 +5169,7 @@ export function createPrinter(printerOptions: PrinterOptions = {}, handlers: Pri
         return getSourceTextOfNodeFromSourceFile(sourceFile, node, includeTrivia);
     }
 
-    function getLiteralTextOfNode(node: LiteralLikeNode, neverAsciiEscape: boolean | undefined, jsxAttributeEscape: boolean): string {
+    function getLiteralTextOfNode(node: LiteralLikeNode, sourceFile = currentSourceFile, neverAsciiEscape: boolean | undefined, jsxAttributeEscape: boolean): string {
         if (node.kind === SyntaxKind.StringLiteral && (node as StringLiteral).textSourceNode) {
             const textSourceNode = (node as StringLiteral).textSourceNode!;
             if (isIdentifier(textSourceNode) || isPrivateIdentifier(textSourceNode) || isNumericLiteral(textSourceNode) || isJsxNamespacedName(textSourceNode)) {
@@ -5179,7 +5179,7 @@ export function createPrinter(printerOptions: PrinterOptions = {}, handlers: Pri
                     `"${escapeNonAsciiString(text)}"`;
             }
             else {
-                return getLiteralTextOfNode(textSourceNode, neverAsciiEscape, jsxAttributeEscape);
+                return getLiteralTextOfNode(textSourceNode, getSourceFileOfNode(textSourceNode), neverAsciiEscape, jsxAttributeEscape);
             }
         }
 
@@ -5188,7 +5188,7 @@ export function createPrinter(printerOptions: PrinterOptions = {}, handlers: Pri
             | (printerOptions.terminateUnterminatedLiterals ? GetLiteralTextFlags.TerminateUnterminatedLiterals : 0)
             | (printerOptions.target && printerOptions.target >= ScriptTarget.ES2021 ? GetLiteralTextFlags.AllowNumericSeparator : 0);
 
-        return getLiteralText(node, currentSourceFile, flags);
+        return getLiteralText(node, sourceFile, flags);
     }
 
     /**

tests/cases/fourslash/completionClassMemberSnippetCrossFileNodeReuse1.ts

@@ -0,0 +1,47 @@
+/// <reference path="fourslash.ts" />
+
+// @strict: true
+
+// @filename: KlassConstructor.ts
+
+//// type GenericConstructor<T> = new (...args: any[]) => T;
+//// export type KlassConstructor<Cls extends GenericConstructor<any>> =
+////   GenericConstructor<InstanceType<Cls>> & { [k in keyof Cls]: Cls[k] };
+
+// @filename: ElementNode.ts
+//// import { KlassConstructor } from "./KlassConstructor";
+////
+//// export type NodeKey = string;
+////
+//// export class ElementNode {
+////   ["constructor"]!: KlassConstructor<typeof ElementNode>;
+//// }
+
+// @filename: CollapsibleContainerNode.ts
+//// import { ElementNode, NodeKey } from "./ElementNode";
+////
+//// export class CollapsibleContainerNode extends ElementNode {
+////   __open: boolean;
+////
+////   /*1*/
+//// }
+
+format.setFormatOptions({
+  insertSpaceAfterConstructor: false,
+});
+
+verify.completions({
+    marker: "1",
+    preferences: {
+        includeCompletionsWithClassMemberSnippets: true,
+        includeCompletionsWithInsertText: true,
+    },
+    includes: [{
+      name: `["constructor"]`,
+      insertText: `["constructor"]: KlassConstructor<typeof ElementNode>;`,
+      filterText: `["constructor"]`,
+      hasAction: true,
+      source: 'ClassMemberSnippet/'
+    }],
+    isNewIdentifierLocation: true,
+});