@babel/plugin-proposal-optional-chaining
Advanced tools
Package description
The @babel/plugin-proposal-optional-chaining package is a Babel plugin that allows developers to use the optional chaining syntax in JavaScript. Optional chaining enables developers to read the value of a property located deep within a chain of connected objects without having to check that each reference in the chain is valid.
Optional Property Access
Safely access a property on an object. If 'obj' is null or undefined, 'value' will be undefined instead of throwing an error.
const value = obj?.prop;Optional Method Calls
Safely call a method on an object. If 'obj' or 'obj.method' is null or undefined, 'result' will be undefined instead of throwing an error.
const result = obj?.method?.();Optional Element Access
Safely access an array element. If 'arr' is null or undefined, 'item' will be undefined instead of throwing an error.
const item = arr?.[index];This package is a predecessor to the official Babel optional chaining plugin. It offers similar functionality but is not maintained as part of the official Babel suite of plugins.
This package allows safe property access on objects but does not use the optional chaining syntax. It's a utility function rather than a Babel plugin and requires manual function calls.
Lodash provides a 'get' function that allows safe access to object properties. It's similar in purpose to optional chaining but uses a different syntax and is a part of the larger Lodash utility library.
Changelog
v7.16.0 (2021-10-30)
babel-helpers, babel-plugin-proposal-async-generator-functions, babel-runtime-corejs2, babel-runtime-corejs3, babel-runtime
for-await (@nicolo-ribaudo)babel-generator, babel-parser, babel-plugin-transform-typescript, babel-types
babel-parser
babel-helper-fixtures, babel-helper-transform-fixture-test-runner, babel-parser, babel-plugin-syntax-typescript, babel-preset-typescript
.mts and .cts files in @babel/preset-typescript (@nicolo-ribaudo)@babel/eslint-parser (@nicolo-ribaudo)babel-generator, babel-parser, babel-plugin-proposal-pipeline-operator, babel-plugin-syntax-pipeline-operator
babel-compat-data, babel-generator, babel-parser, babel-preset-env, babel-types
babel-helper-skip-transparent-expression-wrappers, babel-plugin-proposal-optional-chaining
skipTransparentExprWrapperNodes helper (@lightmare)babel-traverse, babel-types
babel-parser, babel-plugin-transform-typescript
babel-plugin-transform-typescript
babel-core, babel-helper-create-class-features-plugin, babel-plugin-transform-typescript
babel-compat-data, babel-plugin-bugfix-safari-id-destructuring-collision-in-function-expression, babel-plugin-bugfix-v8-spread-parameters-in-optional-chaining, babel-plugin-transform-react-constant-elements, babel-preset-env, babel-traverse
babel-plugin-proposal-async-generator-functions, babel-traverse
babel-traverse, babel-types
babel-generator
workspace:^ to specify @babel/ dependencies (@nicolo-ribaudo)babel-helper-fixtures, babel-plugin-proposal-class-properties, babel-plugin-transform-runtime, babel-preset-react
babel-types
createTypeAnnotationBasedOnTypeof (babel-types) (@lightmare)babel-helpers
babel-core, babel-plugin-transform-react-jsx-development, babel-plugin-transform-react-jsx, babel-types
babel-types
Readme
Transform optional chaining operators into a series of nil checks
See our website @babel/plugin-proposal-optional-chaining for more information.
Using npm:
npm install --save-dev @babel/plugin-proposal-optional-chaining
or using yarn:
yarn add @babel/plugin-proposal-optional-chaining --dev
FAQs
Transform optional chaining operators into a series of nil checks
We found that @babel/plugin-proposal-optional-chaining demonstrated a not healthy version release cadence and project activity because the last version was released a year ago. It has 4 open source maintainers collaborating on the project.
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