Build a project with estrella by convention using the settings in package.json

estrella-utils.cjs

/* eslint-disable @typescript-eslint/no-var-requires */

const { join } = require('path')
const { build, file, cliopts } = require('estrella')

module.exports = {
  buildPackage,
  buildBrowserAndNodeModule,
  buildBrowserModule,
  buildNodeModule
}

async function buildPackage (cwd) {
  const pkg = JSON.parse(await file.read(join(cwd, 'package.json'), { encoding: 'utf8' }))

  if (pkg.exports) {
    if (pkg.exports.module && pkg.exports.require) {
      buildBrowserAndNodeModule(cwd)
    } else if (pkg.exports.module) {
      buildBrowserModule(cwd)
    } else if (pkg.exports.require) {
      buildNodeModule(cwd)
    }
  }
}

async function buildBrowserAndNodeModule (cwd) {
  const pkg = JSON.parse(await file.read(join(cwd, 'package.json'), { encoding: 'utf8' }))

  const common = {
    entry: join(cwd, pkg.source),
    sourcemap: true,
    target: ['esnext'],
    tslint: false,
    incremental: !!cliopts.watch
  }

  build({
    ...common,
    outfile: join(cwd, pkg.exports.module),
    format: 'esm',
    platform: 'browser'
  })

  build({
    ...common,
    outfile: join(cwd, pkg.exports.require),
    format: 'cjs',
    platform: 'node',
    tslint: false
  })
}

async function buildBrowserModule (cwd) {
  const pkg = JSON.parse(await file.read(join(cwd, 'package.json'), { encoding: 'utf8' }))

  build({
    entry: join(cwd, pkg.source),
    sourcemap: true,
    target: ['esnext'],
    outfile: join(cwd, pkg.exports.module),
    format: 'esm',
    platform: 'browser',
    incremental: !!cliopts.watch
  })
}

async function buildNodeModule (cwd) {
  const pkg = JSON.parse(await file.read(join(cwd, 'package.json'), { encoding: 'utf8' }))

  build({
    entry: join(cwd, pkg.source),
    sourcemap: true,
    target: ['esnext'],
    tslint: { format: 'short' },
    outfile: join(cwd, pkg.exports.require),
    format: 'cjs',
    platform: 'node',
    incremental: !!cliopts.watch
  })
}