Add huge maximal length for noTruncation mode

src/compiler/checker.ts

@@ -3972,7 +3972,7 @@ namespace ts {
             printer.writeNode(EmitHint.Unspecified, typeNode, /*sourceFile*/ sourceFile, writer);
             const result = writer.getText();
 
-            const maxLength = noTruncation ? undefined : defaultMaximumTruncationLength * 2;
+            const maxLength = noTruncation ? noTruncationMaximumTruncationLength * 2 : defaultMaximumTruncationLength * 2;
             if (maxLength && result && result.length >= maxLength) {
                 return result.substr(0, maxLength - "...".length) + "...";
             }
@@ -4043,7 +4043,7 @@ namespace ts {
 
             function checkTruncationLength(context: NodeBuilderContext): boolean {
                 if (context.truncating) return context.truncating;
-                return context.truncating = !(context.flags & NodeBuilderFlags.NoTruncation) && context.approximateLength > defaultMaximumTruncationLength;
+                return context.truncating = context.approximateLength > ((context.flags & NodeBuilderFlags.NoTruncation) ? noTruncationMaximumTruncationLength : defaultMaximumTruncationLength);
             }
 
             function typeToTypeNodeHelper(type: Type, context: NodeBuilderContext): TypeNode {

src/compiler/utilities.ts

@@ -7,6 +7,7 @@ namespace ts {
     export const externalHelpersModuleNameText = "tslib";
 
     export const defaultMaximumTruncationLength = 160;
+    export const noTruncationMaximumTruncationLength = 1_000_000;
 
     export function getDeclarationOfKind<T extends Declaration>(symbol: Symbol, kind: T["kind"]): T | undefined {
         const declarations = symbol.declarations;