config redirect

node_modules/vendor-copy/index.js

@@ -0,0 +1,32 @@
+'use strict';
+
+const path = require('path');
+const fs = require('fs').promises;
+const util = require('util');
+const ncp = util.promisify(require('ncp'));
+
+async function ensureDir(fromTo) {
+  const toPath = path.dirname(fromTo.to);
+
+  await fs.mkdir(toPath, { recursive: true });
+}
+
+async function copyFile(fromTo) {
+  await ncp(fromTo.from, fromTo.to, { dereference: true });
+}
+
+async function ensureDirAndCopy(root, relativeFromTo) {
+  const fromTo = {
+    from: path.join(root, relativeFromTo.from),
+    to: path.join(root, relativeFromTo.to)
+  };
+
+  await ensureDir(fromTo);
+  await copyFile(fromTo);
+
+  return fromTo;
+}
+
+module.exports = function (root, copyItems) {
+  return Promise.all(copyItems.map(relativeFromTo => ensureDirAndCopy(root, relativeFromTo)));
+};