Drop support for Node.js 10 (#11830)

scripts/build/build.mjs

@@ -126,7 +126,7 @@ function handleError(error) {
 async function preparePackage() {
   const packageJson = await readJson(path.join(PROJECT_ROOT, "package.json"));
   packageJson.bin = "./bin-prettier.js";
-  packageJson.engines.node = ">=10.13.0";
+  // packageJson.engines.node = ">=10.13.0";
   delete packageJson.dependencies;
   delete packageJson.devDependencies;
   delete packageJson.browserslist;

scripts/build/bundler.mjs

@@ -84,7 +84,7 @@ function getBabelConfig(bundle) {
     compact: bundle.type === "plugin" ? false : "auto",
     exclude: [/\/core-js\//],
   };
-  const targets = { node: "10" };
+  const targets = { node: "12" };
   if (bundle.target === "universal") {
     targets.browsers = packageJson.browserslist;
   }