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@babel/plugin-transform-typeof-symbol

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@babel/plugin-transform-typeof-symbol

This transformer wraps all typeof expressions with a method that replicates native behaviour. (ie. returning “symbol” for symbols)

    7.23.3latest
    GitHub
    npm

Version published
Maintainers
4
Weekly downloads
22,165,633
increased by4.6%

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Package description

What is @babel/plugin-transform-typeof-symbol?

The @babel/plugin-transform-typeof-symbol package is a plugin for Babel, a JavaScript compiler, that ensures the behavior of the 'typeof' operator is spec-compliant when used with symbols. In environments that do not fully support symbols, this plugin transforms 'typeof' checks to a method that can correctly identify 'symbol' types.

What are @babel/plugin-transform-typeof-symbol's main functionalities?

Transform typeof checks for symbols

This code represents the transformation that the plugin applies to 'typeof' checks. It defines a function that can correctly identify symbols, even in environments that do not natively support the 'symbol' type.

var _typeof = function(obj) { return obj && typeof Symbol !== 'undefined' && obj.constructor === Symbol ? 'symbol' : typeof obj; };

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Changelog

Source

v7.23.3 (2023-11-09)

:bug: Bug Fix
  • babel-plugin-transform-typescript
    • #16071 Strip type-only TS namespaces (@colinaaa)
  • babel-generator
  • babel-compat-data, babel-plugin-bugfix-v8-static-class-fields-redefine-readonly, babel-preset-env
  • babel-plugin-transform-object-super
  • babel-helper-module-transforms, babel-plugin-transform-modules-amd, babel-plugin-transform-modules-commonjs, babel-plugin-transform-modules-umd
:memo: Documentation
  • #16044 docs: Update links in @babel/eslint-parser README (@aryehb)
:house: Internal
  • babel-core, babel-preset-env
:running_woman: Performance
:microscope: Output optimization
  • babel-plugin-transform-computed-properties

Readme

Source

@babel/plugin-transform-typeof-symbol

This transformer wraps all typeof expressions with a method that replicates native behaviour. (ie. returning “symbol” for symbols)

See our website @babel/plugin-transform-typeof-symbol for more information.

Install

Using npm:

npm install --save-dev @babel/plugin-transform-typeof-symbol

or using yarn:

yarn add @babel/plugin-transform-typeof-symbol --dev

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Last updated on 09 Nov 2023

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