Move tsserverlibrary.js to typescript.js, make tsserverlibrary.js a shim (#55273)

Herebyfile.mjs

@@ -404,27 +404,50 @@ export const watchMin = task({
 
 
 
-const { main: lssl, build: buildLssl, watch: watchLssl } = entrypointBuildTask({
+// This is technically not enough to make tsserverlibrary loadable in the
+// browser, but it's unlikely that anyone has actually been doing that.
+const lsslJs = `
+if (typeof module !== "undefined" && module.exports) {
+    module.exports = require("./typescript.js");
+}
+else {
+    throw new Error("tsserverlibrary requires CommonJS; use typescript.js instead");
+}
+`;
+
+const lsslDts = `
+import ts = require("./typescript.js");
+export = ts;
+`;
+
+const lsslDtsInternal = `
+import ts = require("./typescript.internal.js");
+export = ts;
+`;
+
+/**
+ * @param {string} contents
+ */
+async function fileContentsWithCopyright(contents) {
+    return await copyright() + contents.trim().replace(/\r\n/g, "\n") + "\n";
+}
+
+const lssl = task({
     name: "lssl",
     description: "Builds language service server library",
-    buildDeps: [generateDiagnostics],
-    project: "src/tsserverlibrary",
-    srcEntrypoint: "./src/tsserverlibrary/tsserverlibrary.ts",
-    builtEntrypoint: "./built/local/tsserverlibrary/tsserverlibrary.js",
-    output: "./built/local/tsserverlibrary.js",
-    mainDeps: [generateLibs],
-    bundlerOptions: { exportIsTsObject: true },
+    dependencies: [services],
+    run: async () => {
+        await fs.promises.writeFile("./built/local/tsserverlibrary.js", await fileContentsWithCopyright(lsslJs));
+    }
 });
-export { lssl, watchLssl };
 
 export const dtsLssl = task({
     name: "dts-lssl",
     description: "Bundles tsserverlibrary.d.ts",
-    dependencies: [buildLssl],
+    dependencies: [dtsServices],
     run: async () => {
-        if (needsUpdate("./built/local/tsserverlibrary/tsconfig.tsbuildinfo", ["./built/local/tsserverlibrary.d.ts", "./built/local/tsserverlibrary.internal.d.ts"])) {
-            await runDtsBundler("./built/local/tsserverlibrary/tsserverlibrary.d.ts", "./built/local/tsserverlibrary.d.ts");
-        }
+        await fs.promises.writeFile("./built/local/tsserverlibrary.d.ts", await fileContentsWithCopyright(lsslDts));
+        await fs.promises.writeFile("./built/local/tsserverlibrary.internal.d.ts", await fileContentsWithCopyright(lsslDtsInternal));
     }
 });
 
@@ -563,7 +586,7 @@ export const watchLocal = task({
     name: "watch-local",
     description: "Watches the full compiler and services",
     hiddenFromTaskList: true,
-    dependencies: [localize, watchTsc, watchTsserver, watchServices, watchLssl, watchOtherOutputs, dts, watchSrc],
+    dependencies: [localize, watchTsc, watchTsserver, watchServices, lssl, watchOtherOutputs, dts, watchSrc],
 });
 
 const runtestsDeps = [tests, generateLibs].concat(cmdLineOptions.typecheck ? [dts] : []);

src/testRunner/unittests/publicApi.ts

@@ -1,4 +1,3 @@
-import * as compiler from "../_namespaces/compiler";
 import * as documents from "../_namespaces/documents";
 import * as fakes from "../_namespaces/fakes";
 import * as Harness from "../_namespaces/Harness";
@@ -19,21 +18,6 @@ describe("unittests:: Public APIs", () => {
         it("should be acknowledged when they change", () => {
             Harness.Baseline.runBaseline(api, fileContent, { PrintDiff: true });
         });
-
-        it("should compile", () => {
-            const fs = vfs.createFromFileSystem(Harness.IO, /*ignoreCase*/ false);
-            fs.linkSync(`${vfs.builtFolder}/${fileName}`, `${vfs.srcFolder}/${fileName}`);
-            const sys = new fakes.System(fs);
-            const options: ts.CompilerOptions = {
-                ...ts.getDefaultCompilerOptions(),
-                strict: true,
-                exactOptionalPropertyTypes: true,
-                lib: ["lib.es2018.d.ts"],
-            };
-            const host = new fakes.CompilerHost(sys, options);
-            const result = compiler.compileFiles(host, [`${vfs.srcFolder}/${fileName}`], options);
-            assert(!result.diagnostics || !result.diagnostics.length, Harness.Compiler.minimalDiagnosticsToString(result.diagnostics, /*pretty*/ true));
-        });
     }
 
     describe("for the language service and compiler", () => {

src/tsconfig.json

@@ -13,7 +13,6 @@
         { "path": "./testRunner" },
         { "path": "./tsc" },
         { "path": "./tsserver" },
-        { "path": "./tsserverlibrary" },
         { "path": "./typescript" },
         { "path": "./typingsInstaller" },
         { "path": "./typingsInstallerCore" },

src/tsserverlibrary/_namespaces/ts.ts

@@ -1,8 +0,0 @@
-/* Generated file to emulate the ts namespace. */
-
-export * from "../../compiler/_namespaces/ts";
-export * from "../../jsTyping/_namespaces/ts";
-export * from "../../services/_namespaces/ts";
-export * from "../../server/_namespaces/ts";
-import * as server from "./ts.server";
-export { server };

src/tsserverlibrary/tsconfig.json

@@ -1,12 +0,0 @@
-{
-    "extends": "../tsconfig-base",
-    "compilerOptions": {
-    },
-    "references": [
-        { "path": "../compiler" },
-        { "path": "../jsTyping" },
-        { "path": "../services" },
-        { "path": "../server" }
-    ],
-    "include": ["**/*"]
-}

src/tsserverlibrary/tsserverlibrary.ts

@@ -1,3 +0,0 @@
-import * as ts from "./_namespaces/ts";
-
-export = ts;

src/typescript/_namespaces/ts.ts

@@ -3,4 +3,6 @@
 export * from "../../compiler/_namespaces/ts";
 export * from "../../jsTyping/_namespaces/ts";
 export * from "../../services/_namespaces/ts";
-export * from "../../deprecatedCompat/_namespaces/ts";
+export * from "../../server/_namespaces/ts";
+import * as server from "./ts.server";
+export { server };

src/typescript/tsconfig.json

@@ -6,7 +6,7 @@
         { "path": "../compiler" },
         { "path": "../jsTyping" },
         { "path": "../services" },
-        { "path": "../deprecatedCompat" }
+        { "path": "../server" }
     ],
     "include": ["**/*"]
 }

tests/baselines/reference/APILibCheck.types

@@ -8,8 +8,8 @@ import tsInternal = require("typescript-internal");
 >tsInternal : typeof tsInternal
 
 import tsserverlibrary = require("tsserverlibrary");
->tsserverlibrary : typeof tsserverlibrary
+>tsserverlibrary : typeof ts
 
 import tsserverlibraryInternal = require("tsserverlibrary-internal");
->tsserverlibraryInternal : typeof tsserverlibraryInternal
+>tsserverlibraryInternal : typeof tsInternal