@onflow/flow-js-testing/src/cli/commands/init.js

This package will expose a set of utility methods, to allow Cadence code testing with libraries like Jest

/*
 * Flow JS Testing
 *
 * Copyright 2021 Dapper Labs, Inc.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *   http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

import {execSync} from "child_process"

import {writeFile} from "../utils"
import babelConfig from "../templates/babel-config"
import jestConfig from "../templates/jest-config"

const command = {
  command: "init",
  describe: "Install dependencies and prepare config files",
  handler: () => {
    console.log("\n🔧 Installing dependencies")
    execSync("npm init --yes", {stdio: [0, 1, 2]})
    execSync(
      "npm install --save-dev @babel/core @babel/preset-env babel-jest jest jest-environment-node @onflow/flow-js-testing",
      {
        stdio: [0, 1, 2],
      }
    )

    console.log("🏄 Generating Flow config")
    execSync("flow init --reset")

    console.log("🧪 Creating Babel and Jest config files")
    writeFile("./babel.config.json", babelConfig)
    writeFile("./jest.config.json", jestConfig)

    console.log("👍 Done! \n")
    console.log(
      "\n 👉 You can create new test file with 'npx @onflow/flow-js-testing make' command \n"
    )
  },
}

export default command