diff --git a/src/compiler/_namespaces/ts.ts b/src/compiler/_namespaces/ts.ts
index 1ce7091080e7a..e5c3db7415dd4 100644
--- a/src/compiler/_namespaces/ts.ts
+++ b/src/compiler/_namespaces/ts.ts
@@ -70,6 +70,7 @@ export * from "../watch";
 export * from "../watchPublic";
 export * from "../tsbuild";
 export * from "../tsbuildPublic";
+export * from "../executeCommandLine";
 import * as moduleSpecifiers from "./ts.moduleSpecifiers";
 export { moduleSpecifiers };
 import * as performance from "./ts.performance";
diff --git a/src/executeCommandLine/executeCommandLine.ts b/src/compiler/executeCommandLine.ts
similarity index 97%
rename from src/executeCommandLine/executeCommandLine.ts
rename to src/compiler/executeCommandLine.ts
index 16d02310b5eb7..ed5c1836c9bbb 100644
--- a/src/executeCommandLine/executeCommandLine.ts
+++ b/src/compiler/executeCommandLine.ts
@@ -1,4 +1,3 @@
-import * as performance from "../compiler/performance";
 import {
     arrayFrom,
     BuilderProgram,
@@ -85,8 +84,10 @@ import {
     validateLocaleAndSetLanguage,
     version,
     WatchCompilerHost,
+    WatchOfConfigFile,
     WatchOptions,
 } from "./_namespaces/ts";
+import * as performance from "./performance";
 
 interface Statistic {
     name: string;
@@ -94,6 +95,7 @@ interface Statistic {
     type: StatisticType;
 }
 
+/** @internal */
 export enum StatisticType {
     time,
     count,
@@ -730,6 +732,7 @@ function executeCommandLineWorker(
     }
 }
 
+/** @internal */
 export function isBuild(commandLineArgs: readonly string[]) {
     if (commandLineArgs.length > 0 && commandLineArgs[0].charCodeAt(0) === CharacterCodes.minus) {
         const firstOption = commandLineArgs[0].slice(commandLineArgs[0].charCodeAt(1) === CharacterCodes.minus ? 2 : 1).toLowerCase();
@@ -738,12 +741,14 @@ export function isBuild(commandLineArgs: readonly string[]) {
     return false;
 }
 
+/** @internal */
 export type ExecuteCommandLineCallbacks = (program: Program | BuilderProgram | ParsedCommandLine) => void;
+/** @internal */
 export function executeCommandLine(
     system: System,
     cb: ExecuteCommandLineCallbacks,
     commandLineArgs: readonly string[],
-) {
+): void | SolutionBuilder<EmitAndSemanticDiagnosticsBuilderProgram> | WatchOfConfigFile<EmitAndSemanticDiagnosticsBuilderProgram> {
     if (isBuild(commandLineArgs)) {
         const { buildOptions, watchOptions, projects, errors } = parseBuildCommand(commandLineArgs.slice(1));
         if (buildOptions.generateCpuProfile && system.enableCPUProfiler) {
diff --git a/src/executeCommandLine/_namespaces/ts.ts b/src/executeCommandLine/_namespaces/ts.ts
deleted file mode 100644
index 488d183df4a38..0000000000000
--- a/src/executeCommandLine/_namespaces/ts.ts
+++ /dev/null
@@ -1,4 +0,0 @@
-/* Generated file to emulate the ts namespace. */
-
-export * from "../../compiler/_namespaces/ts";
-export * from "../executeCommandLine";
diff --git a/src/executeCommandLine/tsconfig.json b/src/executeCommandLine/tsconfig.json
deleted file mode 100644
index c988aed5d19c3..0000000000000
--- a/src/executeCommandLine/tsconfig.json
+++ /dev/null
@@ -1,11 +0,0 @@
-{
-    "extends": "../tsconfig-base",
-    "compilerOptions": {
-    },
-
-    "references": [
-        { "path": "../compiler" }
-    ],
-
-    "include": ["**/*"]
-}
diff --git a/src/testRunner/_namespaces/ts.ts b/src/testRunner/_namespaces/ts.ts
index 18d1bb33fc953..27efc73b10f55 100644
--- a/src/testRunner/_namespaces/ts.ts
+++ b/src/testRunner/_namespaces/ts.ts
@@ -1,7 +1,6 @@
 /* Generated file to emulate the ts namespace. */
 
 export * from "../../compiler/_namespaces/ts";
-export * from "../../executeCommandLine/_namespaces/ts";
 export * from "../../services/_namespaces/ts";
 export * from "../../jsTyping/_namespaces/ts";
 export * from "../../server/_namespaces/ts";
diff --git a/src/testRunner/tsconfig.json b/src/testRunner/tsconfig.json
index 29d2f351b62cf..10bd1d9ef6807 100644
--- a/src/testRunner/tsconfig.json
+++ b/src/testRunner/tsconfig.json
@@ -9,7 +9,6 @@
     },
     "references": [
         { "path": "../compiler" },
-        { "path": "../executeCommandLine" },
         { "path": "../services" },
         { "path": "../jsTyping" },
         { "path": "../server" },
diff --git a/src/tsc/_namespaces/ts.ts b/src/tsc/_namespaces/ts.ts
index 8e361ae718461..b9fd7c710ab69 100644
--- a/src/tsc/_namespaces/ts.ts
+++ b/src/tsc/_namespaces/ts.ts
@@ -1,4 +1,3 @@
 /* Generated file to emulate the ts namespace. */
 
 export * from "../../compiler/_namespaces/ts";
-export * from "../../executeCommandLine/_namespaces/ts";
diff --git a/src/tsc/tsconfig.json b/src/tsc/tsconfig.json
index 21e193ad5d70c..e0e98fac65db6 100644
--- a/src/tsc/tsconfig.json
+++ b/src/tsc/tsconfig.json
@@ -3,8 +3,7 @@
     "compilerOptions": {
     },
     "references": [
-        { "path": "../compiler" },
-        { "path": "../executeCommandLine" }
+        { "path": "../compiler" }
     ],
     "include": ["**/*"]
 }
diff --git a/src/tsconfig.json b/src/tsconfig.json
index c585d3480f266..0e422305f9d4d 100644
--- a/src/tsconfig.json
+++ b/src/tsconfig.json
@@ -5,7 +5,6 @@
         { "path": "./cancellationToken" },
         { "path": "./compiler" },
         { "path": "./deprecatedCompat" },
-        { "path": "./executeCommandLine" },
         { "path": "./harness" },
         { "path": "./jsTyping" },
         { "path": "./server" },