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maptalks-rollup-plugin-babel

library3.0.2jsnpmunverified

Rollup plugin for seamless integration with Babel. Version 3.0.2 is the latest stable release. It allows transpiling ES6/7 code with Babel while preserving Rollup's tree-shaking and module resolution, avoiding intermediate files and sourcemap issues. Unlike running Babel before Rollup, this plugin handles transpilation per-file, preventing Babel helper duplication. Requires babel-core 6 or 7 as a peer dependency. Key differentiator: integrates directly into Rollup's plugin system, supporting .babelrc configuration and options like include/exclude patterns. Deprecated in favor of @rollup/plugin-babel as of Rollup 1.0.

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npm install maptalks-rollup-plugin-babel

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INSTALL

IMPORT

SIG · MAPTALKS-ROLLUP-PL

maptalks-rollup-plugin-babel

devopsjavascriptv3.0.2

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.

default

✓ import babel from 'rollup-plugin-babel'

✗ import { babel } from 'rollup-plugin-babel'

Default export only; named export not available.

default

✓ const babel = require('rollup-plugin-babel')

✗ const { babel } = require('rollup-plugin-babel')

CommonJS require returns the default export directly.

default

✓ import babel from 'rollup-plugin-babel'

✗ import babel from 'rollup-plugin-babel/default'

No subpath exports; only default import from root.

Shows basic Rollup config with Babel plugin, excluding node_modules and disabling module transformation.

import { rollup } from 'rollup'; import babel from 'rollup-plugin-babel'; rollup({ input: 'src/main.js', plugins: [ babel({ exclude: 'node_modules/**', babelrc: false, presets: [['@babel/preset-env', { modules: false }]], plugins: ['@babel/plugin-external-helpers'] }) ] }).then(bundle => { bundle.write({ file: 'dist/bundle.js', format: 'cjs' }); }).catch(err => console.error(err));

Debug

Known issues

deprecatedrollup-plugin-babel is deprecated; use @rollup/plugin-babel instead.

fix

Replace with @rollup/plugin-babel: npm install @rollup/plugin-babel --save-dev and update import to require('@rollup/plugin-babel')

affects: >=3.0.0

breakingVersion 2 drops support for Babel 5. Use rollup-plugin-babel@1 if still on Babel 5.

fix

Downgrade to version 1: npm install rollup-plugin-babel@1 --save-dev or upgrade to Babel 6+.

affects: >=2.0.0

breakingRequires babel-core 6 or 7 as peer dependency. Installing without matching Babel version will cause runtime errors.

fix

Ensure babel-core (not @babel/core) is installed: npm install babel-core@^7.0.0 --save-dev

affects: >=3.0.0

gotchaBabel presets that include module transformation (e.g., es2015 with modules) break Rollup. Must set modules: false.

fix

In .babelrc or plugin options: set modules: false in preset config, e.g., ["@babel/preset-env", { "modules": false }]

affects: >=2.0.0

gotchaUsing external-helpers plugin is recommended to avoid Babel helper duplication in the bundle.

fix

Add @babel/plugin-external-helpers to Babel plugins and set externalHelpers: true in rollup-plugin-babel options.

affects: >=2.0.0

Errors

Common errors & fixes

Error: Requires Babel "7", but was loaded with "6.26.3"

Mismatch between required babel-core version and installed version.

fix

Install compatible babel-core: npm install babel-core@^7.0.0-bridge

Module parse failed: Unexpected token on import statement

Babel did not transpile the file (e.g., included in node_modules) or modules: false not set.

fix

Add '/node_modules/' to exclude or configure Babel correctly: set modules: false in presets.

Error: Plugin 0 specified in "base" provided an invalid property of type "function"

Using a non-array plugin format in .babelrc.

fix

Ensure Babel plugins are in array format: ["plugin-name", options] or just "plugin-name".

Upgrade

Version history

3.0.2latest on npm

Audit

Dependencies

babel-corerequiredPeer dependency - required for Babel transpilation

Agent activity

2 hits · last 30 days

node

Resources

githubhttps://github.com/rollup/rollup-plugin-babel ↗

packagehttps://www.npmjs.com/package/maptalks-rollup-plugin-babel ↗