The @babel/helper-compilation-targets package is a helper utility used by Babel to determine which JavaScript language features need to be transformed based on the specified compilation targets, such as browsers or Node.js versions. It helps in generating the most efficient and compatible code for the specified environments.

What are @babel/helper-compilation-targets's main functionalities?

Determining necessary plugins/presets

This feature allows you to determine which Babel plugins or presets are necessary to transform your code based on the specified target environments, such as the last two versions of all browsers or Safari versions greater than 7.

const { default: getTargets, filterItems } = require('@babel/helper-compilation-targets');

const targets = getTargets({
  browsers: ['last 2 versions', 'safari > 7']
});

const plugins = filterItems(
  require('@babel/preset-env/data/plugins'),
  targets,
  { ignoreBrowserslistConfig: true }
);

Customizing target environments

This feature enables customization of the target environments for which you are compiling your code. For example, you can specify that you want to target environments that support ES modules or the current version of Node.js.

const { default: getTargets } = require('@babel/helper-compilation-targets');

const targets = getTargets({
  esmodules: true,
  node: 'current'
});

Other packages similar to @babel/helper-compilation-targets

Changelog

Source

v7.23.6 (2023-12-11)

:eyeglasses: Spec Compliance

babel-generator, babel-parser, babel-types
- #16154 Remove TSPropertySignature.initializer (@fisker)
babel-helpers, babel-plugin-proposal-decorators, babel-plugin-transform-class-properties, babel-plugin-transform-class-static-block, babel-plugin-transform-runtime, babel-preset-env, babel-runtime-corejs2, babel-runtime-corejs3, babel-runtime, babel-types
- #16139 Apply toPropertyKey on decorator context name (@JLHwung)

:bug: Bug Fix

babel-generator
- #16166 fix: Correctly indenting when retainLines is enabled (@liuxingbaoyu)
babel-helpers, babel-plugin-proposal-explicit-resource-management
- #16150 using: Allow looking up Symbol.dispose on a function (@odinho)
babel-plugin-proposal-decorators, babel-plugin-transform-class-properties
- #16161 Ensure the [[@@toPrimitive]] call of a decorated class member key is invoked once (@JLHwung)
- #16148 Support named evaluation for decorated anonymous class exp (@JLHwung)
babel-plugin-transform-for-of, babel-preset-env
- #16011 fix: for of with iterableIsArray and shadowing variable (@liuxingbaoyu)
babel-helpers, babel-plugin-proposal-decorators, babel-runtime-corejs2, babel-runtime-corejs3, babel-runtime
- #16144 Set function name for decorated private non-field elements (@JLHwung)
babel-plugin-transform-typescript
- #16137 Fix references to enum values with merging (@nicolo-ribaudo)

:microscope: Output optimization

babel-helper-create-class-features-plugin, babel-plugin-transform-class-properties
- #16159 Reuse computed key memoiser (@JLHwung)
babel-helpers, babel-plugin-proposal-decorators
- #16160 Optimize decorator helper size (@liuxingbaoyu)

Readme

Source