diff --git a/Herebyfile.mjs b/Herebyfile.mjs
index 2fb6b02a33ffe..402f7917cf34a 100644
--- a/Herebyfile.mjs
+++ b/Herebyfile.mjs
@@ -303,6 +303,7 @@ let printedWatchWarning = false;
* @param {string} options.srcEntrypoint
* @param {string} options.builtEntrypoint
* @param {string} options.output
+ * @param {boolean} [options.enableCompileCache]
* @param {Task[]} [options.mainDeps]
* @param {BundlerTaskOptions} [options.bundlerOptions]
*/
@@ -313,7 +314,37 @@ function entrypointBuildTask(options) {
run: () => buildProject(options.project),
});
- const bundler = createBundler(options.srcEntrypoint, options.output, options.bundlerOptions);
+ const mainDeps = options.mainDeps?.slice(0) ?? [];
+
+ let output = options.output;
+ if (options.enableCompileCache) {
+ const originalOutput = output;
+ output = path.join(path.dirname(output), "_" + path.basename(output));
+
+ const compileCacheShim = task({
+ name: `shim-compile-cache-${options.name}`,
+ run: async () => {
+ const outDir = path.dirname(originalOutput);
+ await fs.promises.mkdir(outDir, { recursive: true });
+ const moduleSpecifier = path.relative(outDir, output);
+ const lines = [
+ `// This file is a shim which defers loading the real module until the compile cache is enabled.`,
+ `try {`,
+ ` const { enableCompileCache } = require("node:module");`,
+ ` if (enableCompileCache) {`,
+ ` enableCompileCache();`,
+ ` }`,
+ `} catch {}`,
+ `module.exports = require("./${moduleSpecifier.replace(/[\\/]/g, "/")}");`,
+ ];
+ await fs.promises.writeFile(originalOutput, lines.join("\n") + "\n");
+ },
+ });
+
+ mainDeps.push(compileCacheShim);
+ }
+
+ const bundler = createBundler(options.srcEntrypoint, output, options.bundlerOptions);
// If we ever need to bundle our own output, change this to depend on build
// and run esbuild on builtEntrypoint.
@@ -336,14 +367,13 @@ function entrypointBuildTask(options) {
const shim = task({
name: `shim-${options.name}`,
run: async () => {
- const outDir = path.dirname(options.output);
+ const outDir = path.dirname(output);
await fs.promises.mkdir(outDir, { recursive: true });
const moduleSpecifier = path.relative(outDir, options.builtEntrypoint);
- await fs.promises.writeFile(options.output, `module.exports = require("./${moduleSpecifier.replace(/[\\/]/g, "/")}")`);
+ await fs.promises.writeFile(output, `module.exports = require("./${moduleSpecifier.replace(/[\\/]/g, "/")}")`);
},
});
- const mainDeps = options.mainDeps?.slice(0) ?? [];
if (cmdLineOptions.bundle) {
mainDeps.push(bundle);
if (cmdLineOptions.typecheck) {
@@ -392,6 +422,7 @@ const { main: tsc, watch: watchTsc } = entrypointBuildTask({
builtEntrypoint: "./built/local/tsc/tsc.js",
output: "./built/local/tsc.js",
mainDeps: [generateLibs],
+ enableCompileCache: true,
});
export { tsc, watchTsc };
@@ -429,6 +460,7 @@ const { main: tsserver, watch: watchTsserver } = entrypointBuildTask({
output: "./built/local/tsserver.js",
mainDeps: [generateLibs, services],
bundlerOptions: { usePublicAPI: true },
+ enableCompileCache: true,
});
export { tsserver, watchTsserver };
@@ -589,6 +621,7 @@ const { main: typingsInstaller, watch: watchTypingsInstaller } = entrypointBuild
output: "./built/local/typingsInstaller.js",
mainDeps: [services],
bundlerOptions: { usePublicAPI: true },
+ enableCompileCache: true,
});
const { main: watchGuard, watch: watchWatchGuard } = entrypointBuildTask({
@@ -885,12 +918,15 @@ export const produceLKG = task({
const expectedFiles = [
"built/local/cancellationToken.js",
"built/local/tsc.js",
+ "built/local/_tsc.js",
"built/local/tsserver.js",
+ "built/local/_tsserver.js",
"built/local/tsserverlibrary.js",
"built/local/tsserverlibrary.d.ts",
"built/local/typescript.js",
"built/local/typescript.d.ts",
"built/local/typingsInstaller.js",
+ "built/local/_typingsInstaller.js",
"built/local/watchGuard.js",
].concat(libs().map(lib => lib.target));
const missingFiles = expectedFiles
diff --git a/scripts/produceLKG.mjs b/scripts/produceLKG.mjs
index 3a71e99011312..2f654d668a0a5 100644
--- a/scripts/produceLKG.mjs
+++ b/scripts/produceLKG.mjs
@@ -50,10 +50,13 @@ async function copyTypesMap() {
async function copyScriptOutputs() {
await copyFromBuiltLocal("cancellationToken.js");
await copyFromBuiltLocal("tsc.js");
+ await copyFromBuiltLocal("_tsc.js");
await copyFromBuiltLocal("tsserver.js");
+ await copyFromBuiltLocal("_tsserver.js");
await copyFromBuiltLocal("tsserverlibrary.js");
await copyFromBuiltLocal("typescript.js");
await copyFromBuiltLocal("typingsInstaller.js");
+ await copyFromBuiltLocal("_typingsInstaller.js");
await copyFromBuiltLocal("watchGuard.js");
}
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