Add script to create new package from template

packages/argparse/src/argparse.ts

@@ -106,6 +106,10 @@ function getValue(
   return isPositional ? argument : it.next()
 }
 
+export function isHelp(argv: string[]) {
+  return argv.some(a => /^(-h|--help)$/.test(a))
+}
+
 function checkChoice<T>(argument: string, choice: T, choices?: T[]) {
   if (choices) {
     assert(

packages/scripts/src/commands/index.ts

@@ -1,2 +1,3 @@
 export * from './help'
 export * from './build'
+export * from './newlib'

packages/scripts/src/commands/newlib.ts

@@ -0,0 +1,64 @@
+import {argparse, arg, isHelp} from '@rondo/argparse'
+import {run} from '../run'
+import * as fs from 'fs'
+import * as path from 'path'
+
+export async function newlib(...argv: string[]) {
+  const {parse, help} = argparse({
+    name: arg('string', {positional: true, required: true}),
+    namespace: arg('string', {default: '@rondo'}),
+    help: arg('boolean', {
+      alias: 'h',
+      description: 'Print help message',
+    }),
+    // frontend: arg('boolean', {alias: 'f'}),
+  })
+  if (isHelp(argv)) {
+    console.log('Usage: rondo newlib ' + help())
+    return
+  }
+  const args = parse(argv)
+
+  const destDir = path.join('./packages', args.name)
+
+  console.log('mkdir %s', destDir)
+  fs.mkdirSync(destDir)
+
+  const libraryName = `${args.namespace}/${args.name}`
+
+  const templateDir = path.join('.', 'template')
+  for (const file of await walk(templateDir)) {
+    const src = file
+    const dest = path.join(destDir, path.relative(templateDir, file))
+    if (dest === path.join(destDir, 'package.json')) {
+      console.log('Add %s', dest)
+      const libPkg = JSON.parse(fs.readFileSync(src, 'utf8'))
+      libPkg.name = libraryName
+      fs.writeFileSync(dest, JSON.stringify(libPkg, null, '  '))
+    } else {
+      console.log('Copy %s', src)
+      fs.copyFileSync(src, dest)
+    }
+  }
+
+  console.log('Update main package.json')
+  const pkgFile = path.join(process.cwd(), 'package.json')
+  const pkg = require(pkgFile)
+  pkg.dependencies = pkg.dependencies || {}
+  pkg.dependencies[libraryName] = `file:packages/${args.name}`
+  fs.writeFileSync(pkgFile, JSON.stringify(pkg, null, '  '))
+}
+
+export async function walk(
+  file: string,
+  files: string[] = [],
+): Promise<string[]> {
+  files.push(file)
+  const stat = fs.statSync(file)
+  if (stat.isDirectory()) {
+    for (const f of fs.readdirSync(file)) {
+      walk(path.join(file, f), files)
+    }
+  }
+  return files
+}