Security News
NIST Misses 2024 Deadline to Clear NVD Backlog
NIST has failed to meet its self-imposed deadline of clearing the NVD's backlog by the end of the fiscal year. Meanwhile, CVE's awaiting analysis have increased by 33% since June.
@babel/plugin-transform-duplicate-keys
Advanced tools
Compile objects with duplicate keys to valid strict ES5
The @babel/plugin-transform-duplicate-keys npm package is designed to help developers manage object literals in JavaScript that have duplicate keys. When using this plugin, Babel will transform object literals containing duplicate keys by ensuring that the last key-value pair is the one that is ultimately defined, following the standard JavaScript behavior. This can be particularly useful in scenarios where code is being generated or transformed and duplicate keys may be introduced unintentionally.
Transforming Duplicate Keys in Object Literals
This feature allows the transformation of object literals with duplicate keys in JavaScript code. The plugin ensures that if an object literal contains duplicate keys, only the last occurrence of the key is kept, and previous ones are ignored. This aligns with the standard JavaScript behavior where the last property assignment overrides earlier assignments with the same key.
{"type": "object", "properties": {"duplicateKey": {"type": "string"}, "duplicateKey": {"type": "number"}}}
Compile objects with duplicate keys to valid strict ES5
See our website @babel/plugin-transform-duplicate-keys for more information.
Using npm:
npm install --save-dev @babel/plugin-transform-duplicate-keys
or using yarn:
yarn add @babel/plugin-transform-duplicate-keys --dev
v7.16.5 (2021-12-13)
babel-cli
, babel-core
, babel-helpers
, babel-plugin-proposal-class-properties
, babel-plugin-proposal-decorators
, babel-plugin-transform-classes
, babel-plugin-transform-jscript
, babel-plugin-transform-parameters
, babel-plugin-transform-runtime
, babel-plugin-transform-spread
, babel-plugin-transform-typescript
, babel-preset-env
babel-plugin-transform-parameters
babel-plugin-transform-arrow-functions
, babel-traverse
arguments
variables from functions (@The-x-Theorist)babel-parser
babel-traverse
babel-generator
babel-plugin-transform-react-jsx
babel-helper-create-class-features-plugin
, babel-helper-environment-visitor
, babel-helper-member-expression-to-functions
, babel-helper-module-transforms
, babel-helper-replace-supers
, babel-plugin-transform-classes
, babel-traverse
this
&co in computed keys in arrows transform (@nicolo-ribaudo)babel-parser
babel-compat-data
, babel-helper-annotate-as-pure
, babel-helper-builder-binary-assignment-operator-visitor
, babel-helper-builder-react-jsx
, babel-helper-compilation-targets
, babel-helper-create-class-features-plugin
, babel-helper-create-regexp-features-plugin
, babel-helper-define-map
, babel-helper-explode-assignable-expression
, babel-helper-fixtures
, babel-helper-function-name
, babel-helper-get-function-arity
, babel-helper-hoist-variables
, babel-helper-member-expression-to-functions
, babel-helper-module-imports
, babel-helper-module-transforms
, babel-helper-optimise-call-expression
, babel-helper-plugin-test-runner
, babel-helper-plugin-utils
, babel-helper-remap-async-to-generator
, babel-helper-replace-supers
, babel-helper-simple-access
, babel-helper-skip-transparent-expression-wrappers
, babel-helper-split-export-declaration
, babel-helper-transform-fixture-test-runner
, babel-helper-validator-identifier
, babel-helper-validator-option
, babel-helper-wrap-function
, babel-plugin-bugfix-safari-id-destructuring-collision-in-function-expression
, babel-plugin-bugfix-v8-spread-parameters-in-optional-chaining
, babel-plugin-proposal-async-do-expressions
, babel-plugin-proposal-record-and-tuple
, babel-plugin-syntax-async-do-expressions
, babel-plugin-syntax-module-blocks
, babel-plugin-transform-react-jsx-development
, babel-plugin-transform-react-pure-annotations
, babel-runtime-corejs2
, babel-runtime-corejs3
, babel-runtime
babel-cli
, babel-code-frame
, babel-core
, babel-generator
, babel-helper-annotate-as-pure
, babel-helper-compilation-targets
, babel-helper-create-class-features-plugin
, babel-helper-create-regexp-features-plugin
, babel-helper-fixtures
, babel-helper-module-imports
, babel-helper-optimise-call-expression
, babel-helper-plugin-test-runner
, babel-helper-transform-fixture-test-runner
, babel-helper-validator-identifier
, babel-helper-validator-option
, babel-helpers
, babel-highlight
, babel-node
, babel-parser
, babel-plugin-bugfix-safari-id-destructuring-collision-in-function-expression
, babel-plugin-bugfix-v8-spread-parameters-in-optional-chaining
, babel-plugin-external-helpers
, babel-plugin-proposal-async-do-expressions
, babel-plugin-proposal-async-generator-functions
, babel-plugin-proposal-class-properties
, babel-plugin-proposal-class-static-block
, babel-plugin-proposal-decorators
, babel-plugin-proposal-do-expressions
, babel-plugin-proposal-dynamic-import
, babel-plugin-proposal-export-default-from
, babel-plugin-proposal-export-namespace-from
, babel-plugin-proposal-function-bind
, babel-plugin-proposal-function-sent
, babel-plugin-proposal-json-strings
, babel-plugin-proposal-logical-assignment-operators
, babel-plugin-proposal-nullish-coalescing-operator
, babel-plugin-proposal-numeric-separator
, babel-plugin-proposal-object-rest-spread
, babel-plugin-proposal-optional-catch-binding
, babel-plugin-proposal-optional-chaining
, babel-plugin-proposal-partial-application
, babel-plugin-proposal-pipeline-operator
, babel-plugin-proposal-private-methods
, babel-plugin-proposal-private-property-in-object
, babel-plugin-proposal-record-and-tuple
, babel-plugin-proposal-throw-expressions
, babel-plugin-proposal-unicode-property-regex
, babel-plugin-syntax-decorators
, babel-plugin-syntax-typescript
, babel-plugin-transform-arrow-functions
, babel-plugin-transform-async-to-generator
, babel-plugin-transform-block-scoped-functions
, babel-plugin-transform-block-scoping
, babel-plugin-transform-classes
, babel-plugin-transform-computed-properties
, babel-plugin-transform-destructuring
, babel-plugin-transform-dotall-regex
, babel-plugin-transform-duplicate-keys
, babel-plugin-transform-exponentiation-operator
, babel-plugin-transform-flow-comments
, babel-plugin-transform-flow-strip-types
, babel-plugin-transform-for-of
, babel-plugin-transform-function-name
, babel-plugin-transform-instanceof
, babel-plugin-transform-jscript
, babel-plugin-transform-member-expression-literals
, babel-plugin-transform-modules-amd
, babel-plugin-transform-modules-commonjs
, babel-plugin-transform-modules-systemjs
, babel-plugin-transform-modules-umd
, babel-plugin-transform-named-capturing-groups-regex
, babel-plugin-transform-new-target
, babel-plugin-transform-object-super
, babel-plugin-transform-parameters
, babel-plugin-transform-property-literals
, babel-plugin-transform-property-mutators
, babel-plugin-transform-proto-to-assign
, babel-plugin-transform-react-constant-elements
, babel-plugin-transform-react-display-name
, babel-plugin-transform-react-inline-elements
, babel-plugin-transform-react-jsx-compat
, babel-plugin-transform-react-jsx-development
, babel-plugin-transform-react-jsx-self
, babel-plugin-transform-react-jsx-source
, babel-plugin-transform-react-jsx
, babel-plugin-transform-react-pure-annotations
, babel-plugin-transform-regenerator
, babel-plugin-transform-reserved-words
, babel-plugin-transform-runtime
, babel-plugin-transform-shorthand-properties
, babel-plugin-transform-spread
, babel-plugin-transform-sticky-regex
, babel-plugin-transform-strict-mode
, babel-plugin-transform-template-literals
, babel-plugin-transform-typeof-symbol
, babel-plugin-transform-typescript
, babel-plugin-transform-unicode-escapes
, babel-plugin-transform-unicode-regex
, babel-preset-env
, babel-preset-flow
, babel-preset-react
, babel-preset-typescript
, babel-register
, babel-standalone
, babel-template
, babel-traverse
, babel-types
babel-parser
babel-helpers
require
d files in @babel/helpers
tests (@nicolo-ribaudo)babel-plugin-proposal-object-rest-spread
, babel-traverse
babel-parser
, babel-plugin-bugfix-safari-id-destructuring-collision-in-function-expression
, babel-plugin-bugfix-v8-spread-parameters-in-optional-chaining
, babel-plugin-proposal-optional-chaining
, babel-preset-react
, babel-preset-typescript
src
in tests (@nicolo-ribaudo)@babel/runtime
ESM tests fail (@nicolo-ribaudo)babel-helpers
, babel-plugin-proposal-async-generator-functions
, babel-plugin-transform-runtime
, babel-preset-env
, babel-runtime-corejs2
, babel-runtime
helpers-generated.ts
(@lightmare)FAQs
Compile objects with duplicate keys to valid strict ES5
The npm package @babel/plugin-transform-duplicate-keys receives a total of 18,285,946 weekly downloads. As such, @babel/plugin-transform-duplicate-keys popularity was classified as popular.
We found that @babel/plugin-transform-duplicate-keys demonstrated a healthy version release cadence and project activity because the last version was released less than a year ago. It has 4 open source maintainers collaborating on the project.
Did you know?
Socket for GitHub automatically highlights issues in each pull request and monitors the health of all your open source dependencies. Discover the contents of your packages and block harmful activity before you install or update your dependencies.
Security News
NIST has failed to meet its self-imposed deadline of clearing the NVD's backlog by the end of the fiscal year. Meanwhile, CVE's awaiting analysis have increased by 33% since June.
Security News
Cloudflare has launched a setup wizard allowing users to easily create and manage a security.txt file for vulnerability disclosure on their websites.
Security News
The Socket Research team breaks down a malicious npm package targeting the legitimate DOMPurify library. It uses obfuscated code to hide that it is exfiltrating browser and crypto wallet data.