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#!/usr/bin/env node
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const path = require('path')
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const fs = require('fs-extra')
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const argv = require('minimist')(process.argv.slice(2))
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async function init() {
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  const targetDir = argv._[0] || '.'
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  const cwd = process.cwd()
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  const root = path.join(cwd, targetDir)
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  const renameFiles = {
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    _gitignore: '.gitignore',
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  }
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  console.log(`Scaffolding project in ${root}...`)
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  await fs.ensureDir(root)
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  const existing = await fs.readdir(root)
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  if (existing.length) {
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    console.error(`Error: target directory is not empty.`)
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    process.exit(1)
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  }
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  const templateDir = path.join(
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    __dirname,
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    `template-${argv.t || argv.template || 'default'}`
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  )
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  const write = async (file, content) => {
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    const targetPath = renameFiles[file]
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      ? path.join(root, renameFiles[file])
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      : path.join(root, file)
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    if (content) {
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      await fs.writeFile(targetPath, content)
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    } else {
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      await fs.copy(path.join(templateDir, file), targetPath)
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    }
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  }
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  const files = await fs.readdir(templateDir)
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  for (const file of files.filter((f) => f !== 'package.json')) {
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    await write(file)
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  }
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  const pkg = require(path.join(templateDir, `package.json`))
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  pkg.name = path.basename(root)
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  await write('package.json', JSON.stringify(pkg, null, 2))
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  console.log(`\nDone. Now run:\n`)
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  if (root !== cwd) {
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    console.log(`  cd ${path.relative(cwd, root)}`)
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  }
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  console.log(`  npm install (or \`yarn\`)`)
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  console.log(`  npm run dev (or \`yarn dev\`)`)
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  console.log()
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}
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init().catch((e) => {
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  console.error(e)
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})