projen-babel

0.0.27 verified Sat Apr 25 auth: no javascript

A helper library for configuring Babel in Projen-based projects. Current stable version is 0.0.27. This package provides constructs to integrate Babel transpilation into Projen-managed projects, simplifying setup and ensuring compatibility. It is part of a monorepo maintained by dkershner6, with a focus on providing reusable constructs for common tooling. Differentiators include explicit peer dependencies on projen 0.88.0 and constructs 10.3.0, ensuring deterministic behavior. Released on an as-needed cadence.

Common errors

error Cannot find module 'projen-babel' ↓

cause Package not installed or missing peer deps

fix

Run npm install projen-babel projen@0.88.0 constructs@10.3.0

error SyntaxError: Unexpected token 'export' ↓

cause Using CommonJS require with ESM-only package

fix

Use import syntax or set "type": "module" in package.json

Warnings

breaking Requires projen 0.88.0 exactly due to peer dependency strictness. ↓

fix Use projen 0.88.0 and constructs 10.3.0.

deprecated Version 0.0.27 may have unannounced breaking changes in minor releases. ↓

fix Pin exact version in package.json.

Install

npm install projen-babel

yarn add projen-babel

pnpm add projen-babel

Imports

BabelConfig

wrong

const BabelConfig = require('projen-babel').BabelConfig

correct

import { BabelConfig } from 'projen-babel'

ESM-only; types included.

BabelProject

wrong

import BabelProject from 'projen-babel'

correct

import { BabelProject } from 'projen-babel'

Named export, not default.

Quickstart

Creates a Projen project with a BabelConfig construct, adding Babel configuration.

import { Project } from 'projen';
import { BabelConfig, BabelProject } from 'projen-babel';

const project = new Project({
  name: 'my-project',
  defaultReleaseBranch: 'main',
});

new BabelConfig(project, {
  presets: ['@babel/preset-env'],
  plugins: ['@babel/plugin-transform-runtime'],
});

project.synth();