Revert "Disallow numeric literals with negative numbers (#55268)" (#56422)

src/compiler/checker.ts

@@ -8328,7 +8328,7 @@ export function createTypeChecker(host: TypeCheckerHost): TypeChecker {
                         return factory.createStringLiteral(name, !!singleQuote);
                     }
                     if (isNumericLiteralName(name) && startsWith(name, "-")) {
-                        return factory.createComputedPropertyName(factory.createPrefixUnaryExpression(SyntaxKind.MinusToken, factory.createNumericLiteral(Math.abs(+name))));
+                        return factory.createComputedPropertyName(factory.createNumericLiteral(+name));
                     }
                     return createPropertyNameNodeForIdentifierOrLiteral(name, getEmitScriptTarget(compilerOptions), singleQuote, stringNamed, isMethod);
                 }
@@ -39006,14 +39006,9 @@ export function createTypeChecker(host: TypeCheckerHost): TypeChecker {
                 return hasSkipDirectInferenceFlag(node) ?
                     blockedStringType :
                     getFreshTypeOfLiteralType(getStringLiteralType((node as StringLiteralLike).text));
-            case SyntaxKind.NumericLiteral: {
+            case SyntaxKind.NumericLiteral:
                 checkGrammarNumericLiteral(node as NumericLiteral);
-                const value = +(node as NumericLiteral).text;
-                if (!isFinite(value)) {
-                    return numberType;
-                }
-                return getFreshTypeOfLiteralType(getNumberLiteralType(value));
-            }
+                return getFreshTypeOfLiteralType(getNumberLiteralType(+(node as NumericLiteral).text));
             case SyntaxKind.BigIntLiteral:
                 checkGrammarBigIntLiteral(node as BigIntLiteral);
                 return getFreshTypeOfLiteralType(getBigIntLiteralType({
@@ -47949,9 +47944,8 @@ export function createTypeChecker(host: TypeCheckerHost): TypeChecker {
         if (enumResult) return enumResult;
         const literalValue = (type as LiteralType).value;
         return typeof literalValue === "object" ? factory.createBigIntLiteral(literalValue) :
-            typeof literalValue === "string" ? factory.createStringLiteral(literalValue) :
-            literalValue < 0 ? factory.createPrefixUnaryExpression(SyntaxKind.MinusToken, factory.createNumericLiteral(Math.abs(literalValue))) :
-            factory.createNumericLiteral(literalValue);
+            typeof literalValue === "number" ? factory.createNumericLiteral(literalValue) :
+            factory.createStringLiteral(literalValue);
     }
 
     function createLiteralConstValue(node: VariableDeclaration | PropertyDeclaration | PropertySignature | ParameterDeclaration, tracker: SymbolTracker) {

src/compiler/factory/nodeFactory.ts

@@ -44,7 +44,6 @@ import {
     CaseOrDefaultClause,
     cast,
     CatchClause,
-    CharacterCodes,
     ClassDeclaration,
     ClassElement,
     ClassExpression,
@@ -1254,10 +1253,8 @@ export function createNodeFactory(flags: NodeFactoryFlags, baseFactory: BaseNode
 
     // @api
     function createNumericLiteral(value: string | number, numericLiteralFlags: TokenFlags = TokenFlags.None): NumericLiteral {
-        const text = typeof value === "number" ? value + "" : value;
-        Debug.assert(text.charCodeAt(0) !== CharacterCodes.minus, "Negative numbers should be created in combination with createPrefixUnaryExpression");
         const node = createBaseDeclaration<NumericLiteral>(SyntaxKind.NumericLiteral);
-        node.text = text;
+        node.text = typeof value === "number" ? value + "" : value;
         node.numericLiteralFlags = numericLiteralFlags;
         if (numericLiteralFlags & TokenFlags.BinaryOrOctalSpecifier) node.transformFlags |= TransformFlags.ContainsES2015;
         return node;

src/compiler/transformers/declarations.ts

@@ -1798,14 +1798,7 @@ export function transformDeclarations(context: TransformationContext) {
                         if (shouldStripInternal(m)) return;
                         // Rewrite enum values to their constants, if available
                         const constValue = resolver.getConstantValue(m);
-                        const newInitializer = constValue === undefined
-                            ? undefined
-                            : typeof constValue === "string"
-                            ? factory.createStringLiteral(constValue)
-                            : constValue < 0
-                            ? factory.createPrefixUnaryExpression(SyntaxKind.MinusToken, factory.createNumericLiteral(Math.abs(constValue)))
-                            : factory.createNumericLiteral(constValue);
-                        return preserveJsDoc(factory.updateEnumMember(m, m.name, newInitializer), m);
+                        return preserveJsDoc(factory.updateEnumMember(m, m.name, constValue !== undefined ? typeof constValue === "string" ? factory.createStringLiteral(constValue) : factory.createNumericLiteral(constValue) : undefined), m);
                     })),
                 ));
             }

src/compiler/transformers/generators.ts

@@ -2524,7 +2524,7 @@ export function transformGenerators(context: TransformationContext): (x: SourceF
                 labelExpressions = [];
             }
 
-            const expression = factory.createNumericLiteral(Number.MAX_SAFE_INTEGER);
+            const expression = factory.createNumericLiteral(-1);
             if (labelExpressions[label] === undefined) {
                 labelExpressions[label] = [expression];
             }

src/compiler/transformers/ts.ts

@@ -1901,9 +1901,7 @@ export function transformTypeScript(context: TransformationContext) {
     function transformEnumMemberDeclarationValue(member: EnumMember): Expression {
         const value = resolver.getConstantValue(member);
         if (value !== undefined) {
-            return typeof value === "string" ? factory.createStringLiteral(value) :
-                value < 0 ? factory.createPrefixUnaryExpression(SyntaxKind.MinusToken, factory.createNumericLiteral(Math.abs(value))) :
-                factory.createNumericLiteral(value);
+            return typeof value === "string" ? factory.createStringLiteral(value) : factory.createNumericLiteral(value);
         }
         else {
             enableSubstitutionForNonQualifiedEnumMembers();