@babel/helper-annotate-as-pure

@babel/helper-annotate-as-pure

Helper function to annotate paths and nodes with #PURE comment

See our website @babel/helper-annotate-as-pure for more information.

Install

Using npm:

npm install --save @babel/helper-annotate-as-pure

or using yarn:

yarn add @babel/helper-annotate-as-pure

Changelog

v7.27.3 (2025-05-27)

:bug: Bug Fix

• babel-generator
  • #17324 Improve multiline comments handling in yield/await expression (@JLHwung)
• babel-helpers, babel-plugin-transform-async-generator-functions, babel-plugin-transform-regenerator, babel-preset-env, babel-runtime-corejs3
  • #17328 Correctly set .displayName on GeneratorFunction (@nicolo-ribaudo)
• babel-plugin-proposal-explicit-resource-management
  • #17319 fix: handle shadowed binding in for using of body (@JLHwung)
  • #17317 fix: support named evaluation for using declaration (@JLHwung)
• babel-plugin-proposal-decorators, babel-types
  • #17321 fix(converter): Remove abstract modifiers in class declaration to expression conversion (@magic-akari)
• babel-helper-module-transforms, babel-plugin-proposal-explicit-resource-management, babel-plugin-transform-modules-amd, babel-plugin-transform-modules-commonjs, babel-plugin-transform-modules-umd
  • #17257 Preserve class id when transforming using declarations with exported class (@JLHwung)
• babel-parser
  • #17312 fix(parser): properly handle optional markers in generator class methods (@magic-akari)
  • #17307 fix(parser): Terminate modifier parsing at newline (@magic-akari)
• babel-generator, babel-parser
  • #17308 Improve import phase parsing (@JLHwung)

Similar packages

Other packages similar to @babel/helper-annotate-as-pure

babel-plugin-annotate-pure-calls

Similar to @babel/helper-annotate-as-pure, this package provides a Babel plugin to automatically annotate call expressions and new expressions with /*#__PURE__*/ comments. The key difference is that it operates at the plugin level, automatically applying the annotations across your codebase, rather than requiring manual annotation of each call.

uglifyjs-webpack-plugin

While not a direct alternative, uglifyjs-webpack-plugin interfaces with UglifyJS to minify JavaScript bundles in Webpack projects. It can take advantage of the pure annotations added by @babel/helper-annotate-as-pure to perform tree shaking and dead code elimination, showcasing how such annotations can be utilized in the minification process.