diff --git a/lib/tsc.js b/lib/tsc.js
index 37e7f28602e..3ea90872025 100644
--- a/lib/tsc.js
+++ b/lib/tsc.js
@@ -18,7 +18,7 @@ and limitations under the License.
 
 // src/compiler/corePublic.ts
 var versionMajorMinor = "5.6";
-var version = "5.6.2";
+var version = "5.6.3";
 
 // src/compiler/core.ts
 var emptyArray = [];
@@ -6885,7 +6885,6 @@ var Diagnostics = {
   Option_0_1_has_been_removed_Please_remove_it_from_your_configuration: diag(5108, 1 /* Error */, "Option_0_1_has_been_removed_Please_remove_it_from_your_configuration_5108", "Option '{0}={1}' has been removed. Please remove it from your configuration."),
   Option_moduleResolution_must_be_set_to_0_or_left_unspecified_when_option_module_is_set_to_1: diag(5109, 1 /* Error */, "Option_moduleResolution_must_be_set_to_0_or_left_unspecified_when_option_module_is_set_to_1_5109", "Option 'moduleResolution' must be set to '{0}' (or left unspecified) when option 'module' is set to '{1}'."),
   Option_module_must_be_set_to_0_when_option_moduleResolution_is_set_to_1: diag(5110, 1 /* Error */, "Option_module_must_be_set_to_0_when_option_moduleResolution_is_set_to_1_5110", "Option 'module' must be set to '{0}' when option 'moduleResolution' is set to '{1}'."),
-  Option_tsBuildInfoFile_cannot_be_specified_without_specifying_option_incremental_or_composite_or_if_not_running_tsc_b: diag(5111, 1 /* Error */, "Option_tsBuildInfoFile_cannot_be_specified_without_specifying_option_incremental_or_composite_or_if__5111", "Option 'tsBuildInfoFile' cannot be specified without specifying option 'incremental' or 'composite' or if not running 'tsc -b'."),
   Generates_a_sourcemap_for_each_corresponding_d_ts_file: diag(6e3, 3 /* Message */, "Generates_a_sourcemap_for_each_corresponding_d_ts_file_6000", "Generates a sourcemap for each corresponding '.d.ts' file."),
   Concatenate_and_emit_output_to_single_file: diag(6001, 3 /* Message */, "Concatenate_and_emit_output_to_single_file_6001", "Concatenate and emit output to single file."),
   Generates_corresponding_d_ts_file: diag(6002, 3 /* Message */, "Generates_corresponding_d_ts_file_6002", "Generates corresponding '.d.ts' file."),
@@ -54960,7 +54959,7 @@ function createTypeChecker(host) {
         /*reportErrors*/
         false
       ) : unknownType;
-      return addOptionality(widenTypeInferredFromInitializer(element, checkDeclarationInitializer(element, 0 /* Normal */, contextualType)));
+      return addOptionality(getWidenedLiteralTypeForInitializer(element, checkDeclarationInitializer(element, 0 /* Normal */, contextualType)));
     }
     if (isBindingPattern(element.name)) {
       return getTypeFromBindingPattern(element.name, includePatternInType, reportErrors2);
@@ -78755,7 +78754,7 @@ function createTypeChecker(host) {
     return createTupleType(elementTypes, elementFlags, type.target.readonly);
   }
   function widenTypeInferredFromInitializer(declaration, type) {
-    const widened = getCombinedNodeFlagsCached(declaration) & 6 /* Constant */ || isDeclarationReadonly(declaration) ? type : getWidenedLiteralType(type);
+    const widened = getWidenedLiteralTypeForInitializer(declaration, type);
     if (isInJSFile(declaration)) {
       if (isEmptyLiteralType(widened)) {
         reportImplicitAny(declaration, anyType);
@@ -78767,6 +78766,9 @@ function createTypeChecker(host) {
     }
     return widened;
   }
+  function getWidenedLiteralTypeForInitializer(declaration, type) {
+    return getCombinedNodeFlagsCached(declaration) & 6 /* Constant */ || isDeclarationReadonly(declaration) ? type : getWidenedLiteralType(type);
+  }
   function isLiteralOfContextualType(candidateType, contextualType) {
     if (contextualType) {
       if (contextualType.flags & 3145728 /* UnionOrIntersection */) {
@@ -122129,11 +122131,7 @@ function createProgram(rootNamesOrOptions, _options, _host, _oldProgram, _config
       }
     }
     const outputFile = options.outFile;
-    if (options.tsBuildInfoFile) {
-      if (!canEmitTsBuildInfo(options)) {
-        createDiagnosticForOptionName(Diagnostics.Option_tsBuildInfoFile_cannot_be_specified_without_specifying_option_incremental_or_composite_or_if_not_running_tsc_b, "tsBuildInfoFile");
-      }
-    } else if (options.incremental && !outputFile && !options.configFilePath) {
+    if (!options.tsBuildInfoFile && options.incremental && !outputFile && !options.configFilePath) {
       programDiagnostics.add(createCompilerDiagnostic(Diagnostics.Option_incremental_can_only_be_specified_using_tsconfig_emitting_to_single_file_or_when_option_tsBuildInfoFile_is_specified));
     }
     verifyDeprecatedCompilerOptions();
diff --git a/lib/typescript.js b/lib/typescript.js
index 90f3266ee69..0c2c66fb524 100644
--- a/lib/typescript.js
+++ b/lib/typescript.js
@@ -239,7 +239,6 @@ __export(typescript_exports, {
   buildOverload: () => buildOverload,
   bundlerModuleNameResolver: () => bundlerModuleNameResolver,
   canBeConvertedToAsync: () => canBeConvertedToAsync,
-  canEmitTsBuildInfo: () => canEmitTsBuildInfo,
   canHaveDecorators: () => canHaveDecorators,
   canHaveExportModifier: () => canHaveExportModifier,
   canHaveFlowNode: () => canHaveFlowNode,
@@ -2263,7 +2262,7 @@ module.exports = __toCommonJS(typescript_exports);
 
 // src/compiler/corePublic.ts
 var versionMajorMinor = "5.6";
-var version = "5.6.2";
+var version = "5.6.3";
 var Comparison = /* @__PURE__ */ ((Comparison3) => {
   Comparison3[Comparison3["LessThan"] = -1] = "LessThan";
   Comparison3[Comparison3["EqualTo"] = 0] = "EqualTo";
@@ -10283,7 +10282,6 @@ var Diagnostics = {
   Option_0_1_has_been_removed_Please_remove_it_from_your_configuration: diag(5108, 1 /* Error */, "Option_0_1_has_been_removed_Please_remove_it_from_your_configuration_5108", "Option '{0}={1}' has been removed. Please remove it from your configuration."),
   Option_moduleResolution_must_be_set_to_0_or_left_unspecified_when_option_module_is_set_to_1: diag(5109, 1 /* Error */, "Option_moduleResolution_must_be_set_to_0_or_left_unspecified_when_option_module_is_set_to_1_5109", "Option 'moduleResolution' must be set to '{0}' (or left unspecified) when option 'module' is set to '{1}'."),
   Option_module_must_be_set_to_0_when_option_moduleResolution_is_set_to_1: diag(5110, 1 /* Error */, "Option_module_must_be_set_to_0_when_option_moduleResolution_is_set_to_1_5110", "Option 'module' must be set to '{0}' when option 'moduleResolution' is set to '{1}'."),
-  Option_tsBuildInfoFile_cannot_be_specified_without_specifying_option_incremental_or_composite_or_if_not_running_tsc_b: diag(5111, 1 /* Error */, "Option_tsBuildInfoFile_cannot_be_specified_without_specifying_option_incremental_or_composite_or_if__5111", "Option 'tsBuildInfoFile' cannot be specified without specifying option 'incremental' or 'composite' or if not running 'tsc -b'."),
   Generates_a_sourcemap_for_each_corresponding_d_ts_file: diag(6e3, 3 /* Message */, "Generates_a_sourcemap_for_each_corresponding_d_ts_file_6000", "Generates a sourcemap for each corresponding '.d.ts' file."),
   Concatenate_and_emit_output_to_single_file: diag(6001, 3 /* Message */, "Concatenate_and_emit_output_to_single_file_6001", "Concatenate and emit output to single file."),
   Generates_corresponding_d_ts_file: diag(6002, 3 /* Message */, "Generates_corresponding_d_ts_file_6002", "Generates corresponding '.d.ts' file."),
@@ -59580,7 +59578,7 @@ function createTypeChecker(host) {
         /*reportErrors*/
         false
       ) : unknownType;
-      return addOptionality(widenTypeInferredFromInitializer(element, checkDeclarationInitializer(element, 0 /* Normal */, contextualType)));
+      return addOptionality(getWidenedLiteralTypeForInitializer(element, checkDeclarationInitializer(element, 0 /* Normal */, contextualType)));
     }
     if (isBindingPattern(element.name)) {
       return getTypeFromBindingPattern(element.name, includePatternInType, reportErrors2);
@@ -83375,7 +83373,7 @@ function createTypeChecker(host) {
     return createTupleType(elementTypes, elementFlags, type.target.readonly);
   }
   function widenTypeInferredFromInitializer(declaration, type) {
-    const widened = getCombinedNodeFlagsCached(declaration) & 6 /* Constant */ || isDeclarationReadonly(declaration) ? type : getWidenedLiteralType(type);
+    const widened = getWidenedLiteralTypeForInitializer(declaration, type);
     if (isInJSFile(declaration)) {
       if (isEmptyLiteralType(widened)) {
         reportImplicitAny(declaration, anyType);
@@ -83387,6 +83385,9 @@ function createTypeChecker(host) {
     }
     return widened;
   }
+  function getWidenedLiteralTypeForInitializer(declaration, type) {
+    return getCombinedNodeFlagsCached(declaration) & 6 /* Constant */ || isDeclarationReadonly(declaration) ? type : getWidenedLiteralType(type);
+  }
   function isLiteralOfContextualType(candidateType, contextualType) {
     if (contextualType) {
       if (contextualType.flags & 3145728 /* UnionOrIntersection */) {
@@ -126988,11 +126989,7 @@ function createProgram(rootNamesOrOptions, _options, _host, _oldProgram, _config
       }
     }
     const outputFile = options.outFile;
-    if (options.tsBuildInfoFile) {
-      if (!canEmitTsBuildInfo(options)) {
-        createDiagnosticForOptionName(Diagnostics.Option_tsBuildInfoFile_cannot_be_specified_without_specifying_option_incremental_or_composite_or_if_not_running_tsc_b, "tsBuildInfoFile");
-      }
-    } else if (options.incremental && !outputFile && !options.configFilePath) {
+    if (!options.tsBuildInfoFile && options.incremental && !outputFile && !options.configFilePath) {
       programDiagnostics.add(createCompilerDiagnostic(Diagnostics.Option_incremental_can_only_be_specified_using_tsconfig_emitting_to_single_file_or_when_option_tsBuildInfoFile_is_specified));
     }
     verifyDeprecatedCompilerOptions();
@@ -179691,7 +179688,6 @@ __export(ts_exports2, {
   buildOverload: () => buildOverload,
   bundlerModuleNameResolver: () => bundlerModuleNameResolver,
   canBeConvertedToAsync: () => canBeConvertedToAsync,
-  canEmitTsBuildInfo: () => canEmitTsBuildInfo,
   canHaveDecorators: () => canHaveDecorators,
   canHaveExportModifier: () => canHaveExportModifier,
   canHaveFlowNode: () => canHaveFlowNode,
@@ -194049,7 +194045,6 @@ if (typeof console !== "undefined") {
   buildOverload,
   bundlerModuleNameResolver,
   canBeConvertedToAsync,
-  canEmitTsBuildInfo,
   canHaveDecorators,
   canHaveExportModifier,
   canHaveFlowNode,
diff --git a/lib/typingsInstaller.js b/lib/typingsInstaller.js
index 64d72785f27..ea1a4686278 100644
--- a/lib/typingsInstaller.js
+++ b/lib/typingsInstaller.js
@@ -182,7 +182,7 @@ var NodeTypingsInstaller = class extends typescript_exports.server.typingsInstal
       this.log.writeLine(`Exec: ${command}`);
     }
     try {
-      const stdout = (0, import_child_process.execFileSync)(command, { ...options, encoding: "utf-8" });
+      const stdout = (0, import_child_process.execSync)(command, { ...options, encoding: "utf-8" });
       if (this.log.isEnabled()) {
         this.log.writeLine(`    Succeeded. stdout:${indent(typescript_exports.sys.newLine, stdout)}`);
       }
diff --git a/package-lock.json b/package-lock.json
index a3c5548a430..254a9502002 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -1,12 +1,12 @@
 {
     "name": "typescript",
-    "version": "5.6.2",
+    "version": "5.6.3",
     "lockfileVersion": 2,
     "requires": true,
     "packages": {
         "": {
             "name": "typescript",
-            "version": "5.6.2",
+            "version": "5.6.3",
             "license": "Apache-2.0",
             "bin": {
                 "tsc": "bin/tsc",
diff --git a/package.json b/package.json
index a72cb3ab769..673cadfb05e 100644
--- a/package.json
+++ b/package.json
@@ -2,7 +2,7 @@
     "name": "typescript",
     "author": "Microsoft Corp.",
     "homepage": "https://www.typescriptlang.org/",
-    "version": "5.6.2",
+    "version": "5.6.3",
     "license": "Apache-2.0",
     "description": "TypeScript is a language for application scale JavaScript development",
     "keywords": [
diff --git a/src/compiler/corePublic.ts b/src/compiler/corePublic.ts
index 2ab04085e83..95072d8c397 100644
--- a/src/compiler/corePublic.ts
+++ b/src/compiler/corePublic.ts
@@ -3,7 +3,7 @@
 export const versionMajorMinor = "5.6";
 // The following is baselined as a literal template type without intervention
 /** The version of the TypeScript compiler release */
-export const version = "5.6.2" as string;
+export const version = "5.6.3" as string;
 
 /**
  * Type of objects whose values are all of the same type.