Reduce size of parser-typescript.js (prettier#13431)

medikoo · Jan 4, 2024 · ab24851 · ab24851
1 parent f870706
commit ab24851
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Showing 2 changed files with 486 additions and 55 deletions.
diff --git a/scripts/build/config.mjs b/scripts/build/config.mjs
@@ -2,6 +2,7 @@ import path from "node:path";
 import { createRequire } from "node:module";
 import createEsmUtils from "esm-utils";
 import { PROJECT_ROOT } from "../utils/index.mjs";
+import modifyTypescriptModule from "./modify-typescript-module.mjs";
 
 const { require } = createEsmUtils(import.meta);
 
@@ -101,62 +102,8 @@ const parsers = [
       },
       {
         module: require.resolve("typescript"),
-        process(text) {
-          return text.replace(
-            /(?<=\n)(?<indentString>\s+)function tryGetNodePerformanceHooks\(\) {.*?\n\k<indentString>}(?=\n)/s,
-            "function tryGetNodePerformanceHooks() {}"
-          );
-        },
+        process: modifyTypescriptModule,
       },
-
-      ...Object.entries({
-        // `typescript/lib/typescript.js` expose extra global objects
-        // `TypeScript`, `toolsVersion`, `globalThis`
-        'typeof process === "undefined" || process.browser': "false",
-        'typeof globalThis === "object"': "true",
-
-        "_fs.realpathSync.native":
-          "_fs.realpathSync && _fs.realpathSync.native",
-        // Remove useless `ts.sys`
-        "ts.sys = ": "ts.sys = undefined && ",
-
-        // Remove useless language service
-        "ts.realizeDiagnostics = ": "ts.realizeDiagnostics = undefined && ",
-        "ts.TypeScriptServicesFactory = ":
-          "ts.TypeScriptServicesFactory = undefined && ",
-        "var ShimBase = ": "var ShimBase = undefined && ",
-        "var TypeScriptServicesFactory = ":
-          "var TypeScriptServicesFactory = undefined && ",
-        "var LanguageServiceShimObject = ":
-          "var LanguageServiceShimObject = undefined && ",
-        "var CoreServicesShimHostAdapter = ":
-          "var CoreServicesShimHostAdapter = undefined && ",
-        "var LanguageServiceShimHostAdapter = ":
-          "var LanguageServiceShimHostAdapter = undefined && ",
-        "var ScriptSnapshotShimAdapter = ":
-          "var ScriptSnapshotShimAdapter = undefined && ",
-        "var ClassifierShimObject = ":
-          "var ClassifierShimObject = undefined && ",
-        "var CoreServicesShimObject = ":
-          "var CoreServicesShimObject = undefined && ",
-        "function simpleForwardCall(": "0 && function simpleForwardCall(",
-        "function forwardJSONCall(": "0 && function forwardJSONCall(",
-        "function forwardCall(": "0 && function forwardCall(",
-        "function realizeDiagnostics(": "0 && function realizeDiagnostics(",
-        "function realizeDiagnostic(": "0 && function realizeDiagnostic(",
-        "function convertClassifications(":
-          "0 && function convertClassifications(",
-
-        // Dynamic `require()`s
-        "ts.sys && ts.sys.require": "false",
-        "require(etwModulePath)": "undefined",
-        'require("source-map-support").install()': "",
-        "require(modulePath)": "undefined",
-      }).map(([find, replacement]) => ({
-        module: require.resolve("typescript"),
-        find,
-        replacement,
-      })),
       {
         module: require.resolve("debug/src/browser.js"),
         path: require.resolve("./shims/debug.cjs"),