Update npm packages

Author: lydell

babel.config.json

@@ -0,0 +1,3 @@
+{
+  "plugins": ["@babel/plugin-transform-flow-strip-types"]
+}

build.js

@@ -22,7 +22,9 @@ const FILES_TO_COPY = [
     .map((file) => ({ src: path.join(SRC, file), dest: file })),
 ];
 
-if (fs.existsSync(BUILD)) {
+if (fs.rmSync !== undefined) {
+  fs.rmSync(BUILD, { recursive: true, force: true });
+} else if (fs.existsSync(BUILD)) {
   fs.rmdirSync(BUILD, { recursive: true });
 }
 

examples/.eslintrc.js

@@ -235,7 +235,7 @@ module.exports = {
     {
       // These files are used in README.md.
       files: ["readme-*.js"],
-      parser: "babel-eslint",
+      parser: "@babel/eslint-parser",
     },
     {
       // TypeScript.