yaup

library1.8.0jsnpmunverified

A minimal, unopinionated CLI wrapper around esbuild for building dual CJS/ESM packages with TypeScript declaration files. Current stable version is 1.8.0, maintained by egoist. It offers a simple config file (yaup.config.ts) with defineConfig, supporting multiple output formats (esm, cjs, dts). Unlike opinionated alternatives like tsup or rollup, yaup stays close to raw esbuild, giving users flexible configuration with minimal API surface. Release cadence is irregular; the author is not accepting new features unless critical.

devops

npm install yaup

package ↗

INSTALL

IMPORT

SIG · YAUP

yaup

devopsjavascriptv1.8.0

harness data pending

Install & Compatibility

Where this runs

No compatibility data collected yet for this library.

Code

Verified usage

Verified import paths — ran on the pinned version, not inferred.

defineConfig

✓ import { defineConfig } from 'yaup'

✗ const defineConfig = require('yaup').defineConfig

yaup is ESM-only, use import syntax

startDevServer

✓ import { startDevServer } from 'yaup'

✗ const startDevServer = require('yaup').startDevServer

Export for development server, available since v1.5.0

build

✓ import { build } from 'yaup'

✗ const yaup = require('yaup'); yaup.build()

build is a named export, not a method on default

Basic config to build dual CJS/ESM and Type declarations from a single entry

// yaup.config.ts import { defineConfig } from 'yaup' export default defineConfig({ input: './src/index.ts', output: [ { format: 'esm', dir: 'dist/esm' }, { format: 'cjs', dir: 'dist/cjs' }, { format: 'dts', dir: 'dist/types' }, ], })

yaup --version

Debug

Known issues

breakingDropped Node.js <12 support in v1.6.0

fix

Upgrade yaup to >=1.6.0 or use Node.js >=12

affects: <1.6.0

deprecatedformat: 'types' renamed to 'dts' in v1.3.0

fix

Use 'dts' instead of 'types' in output format

affects: >=1.3.0

gotchaConfig file must be named yaup.config.ts or yaup.config.js; other names are ignored

fix

Rename config file to yaup.config.ts or yaup.config.js

affects: >=1.0.0

gotchaThe input path must be relative to config file location, not cwd

fix

Use paths relative to the config file or absolute paths

affects: >=1.0.0

Errors

Common errors & fixes

Error: Cannot find module 'esbuild'

esbuild is a peer dependency not installed automatically

fix

npm install esbuild --save-dev

Error: Config file not found: yaup.config.ts

Config file must be in the root of the project or specified with --config

fix

Place yaup.config.ts in project root or use `yaup --config /path/to/config`

TypeError: defineConfig is not a function

Using CommonJS require() instead of ESM import

fix

Change to `import { defineConfig } from 'yaup'` and ensure package.json has "type": "module"

Upgrade

Version history

1.8.0latest on npm

Audit

Dependencies

esbuildrequiredyaup wraps esbuild for bundling and/or TypeScript compilation

Agent activity

14 hits · last 30 days

node

Resources

packagehttps://www.npmjs.com/package/yaup ↗