Centralize access to the 'current' ts namespace object

Author: jakebailey

src/compiler/_namespaces/ts.ts

@@ -1,6 +1,7 @@
 /* Generated file to emulate the ts namespace. */
 
 export * from "../corePublic";
+export * from "../pluginUtilities";
 export * from "../core";
 export * from "../debug";
 export * from "../semver";

src/compiler/pluginUtilities.ts

@@ -0,0 +1,18 @@
+/** @internal */
+export type Entrypoint = "tsc" | "typescript" | "tsserver" | "tsserverlibrary" | "testRunner";
+
+let currentEntrypoint: Entrypoint | undefined;
+let currentTsNamespace: any;
+
+/** @internal */
+export function setTypeScriptNamespace(entrypoint: Entrypoint, ts: any) {
+    if (currentEntrypoint !== undefined) throw new Error("ts namespace already set");
+    currentEntrypoint = entrypoint;
+    currentTsNamespace = ts;
+}
+
+/** @internal */
+export function getTypeScriptNamespace(): any {
+    if (currentTsNamespace === undefined) throw new Error("ts namespace unset");
+    return currentTsNamespace;
+}

src/server/project.ts

@@ -61,6 +61,7 @@ import {
     getNormalizedAbsolutePath,
     getOrUpdate,
     getStringComparer,
+    getTypeScriptNamespace,
     HasInvalidatedLibResolutions,
     HasInvalidatedResolutions,
     HostCancellationToken,
@@ -2000,7 +2001,7 @@ export abstract class Project implements LanguageServiceHost, ModuleResolutionHo
                 session: this.projectService.session
             };
 
-            const pluginModule = pluginModuleFactory({ typescript: ts });
+            const pluginModule = pluginModuleFactory({ typescript: getTypeScriptNamespace() });
             const newLS = pluginModule.create(info);
             for (const k of Object.keys(this.languageService)) {
                 // eslint-disable-next-line local/no-in-operator

src/testRunner/_namespaces/ts.ts

@@ -11,3 +11,6 @@ export * from "../../harness/_namespaces/ts";
 export * from "../../loggedIO/_namespaces/ts";
 import * as server from "./ts.server";
 export { server };
+
+import * as ts from "./ts";
+ts.setTypeScriptNamespace("testRunner", ts);

src/tsc/_namespaces/ts.ts

@@ -2,3 +2,6 @@
 
 export * from "../../compiler/_namespaces/ts";
 export * from "../../executeCommandLine/_namespaces/ts";
+
+import * as ts from "./ts";
+ts.setTypeScriptNamespace("tsc", ts);

src/tsserver/_namespaces/ts.ts

@@ -6,3 +6,6 @@ export * from "../../jsTyping/_namespaces/ts";
 export * from "../../server/_namespaces/ts";
 import * as server from "./ts.server";
 export { server };
+
+import * as ts from "./ts";
+ts.setTypeScriptNamespace("tsserver", ts);

src/tsserverlibrary/_namespaces/ts.ts

@@ -6,3 +6,6 @@ export * from "../../services/_namespaces/ts";
 export * from "../../server/_namespaces/ts";
 import * as server from "./ts.server";
 export { server };
+
+import * as ts from "./ts";
+ts.setTypeScriptNamespace("tsserverlibrary", ts);

src/typescript/_namespaces/ts.ts

@@ -4,3 +4,6 @@ export * from "../../compiler/_namespaces/ts";
 export * from "../../jsTyping/_namespaces/ts";
 export * from "../../services/_namespaces/ts";
 export * from "../../deprecatedCompat/_namespaces/ts";
+
+import * as ts from "./ts";
+ts.setTypeScriptNamespace("typescript", ts);