chore(build): fix errors

package.json

@@ -36,7 +36,7 @@
   "scripts": {
     "lint": "flow check && tslint --type-check --project tsconfig.json -e **/node_modules/** -e **/dist/** -t codeFrame src/**/*.ts",
     "prebuild": "rimraf dist",
-    "copy-flow": "node tools/copy-flow.js",
+    "copy-flow": "ts-node tools/copy-flow.ts",
     "doc": "typedoc --mode modules --theme minimal --listInvalidSymbolLinks --excludeNotExported --excludePrivate --out dist/docs --target es6 --name Funfix --readme rootdoc.md src",
     "build": "tsc && rollup -c && npm run doc && yarn run copy-flow",
     "start": "tsc-watch --onSuccess 'rollup -c'",

rootdoc.md

@@ -63,7 +63,7 @@ const email: string | null =
 ## Features Overview
 
 The code is organized in ES2015 modules, but all types, classes and
-functions are exported by the [root module]{@link "funfix"}.
+functions are exported by the [root module]{@link "index"}.
 
 **["core"]{@link "core/index"}** defines core
 data types and universal interfaces:

tools/copy-flow.js → tools/copy-flow.ts

@@ -1,4 +1,4 @@
-#!/usr/bin/env node
+#!/usr/bin/env ts-node
 /*
  * Copyright (c) 2017 by The Funfix Project Developers.
  * Some rights reserved.
@@ -16,15 +16,15 @@
  * limitations under the License.
  */
 
-const { exec } = require("shelljs")
-const fs = require("fs")
-const path = require("path")
+import { exec } from "shelljs"
+import * as fs from "fs"
+import * as path from "path"
 
 const currentDir = path.resolve(path.join(path.dirname(process.argv[1]), ".."))
 const srcDir = path.join(currentDir, "src")
 const destDir = path.join(currentDir, "dist")
 
-function listDir(dir) {
+function listDir(dir: string): Promise<string[]> {
   return new Promise((resolve, reject) => {
     fs. readdir(dir, function (err, items) {
       if (err) reject(err); else {
@@ -62,7 +62,7 @@ async function main() {
     exec(`cp -f "${file}" "${dPath}"`)
   }
 
-  const pkg = JSON.parse(fs.readFileSync(path.join(currentDir, "package.json")))
+  const pkg = JSON.parse(fs.readFileSync(path.join(currentDir, "package.json")) as any)
   exec(`cp -f "${destDir}/index.js.flow" "${currentDir}/${pkg.main}.flow"`)
 }