@babel/plugin-proposal-nullish-coalescing-operator
Advanced tools
Remove nullish coalescing operator
The @babel/plugin-proposal-nullish-coalescing-operator package allows developers to use the nullish coalescing operator (??) in their JavaScript code. This operator is a logical operator that returns its right-hand side operand when its left-hand side operand is null or undefined, and otherwise returns its left-hand side operand. This plugin transforms nullish coalescing operator syntax into equivalent JavaScript code that can be understood by JavaScript engines that do not support this feature natively.
Nullish Coalescing for Default Values
Use the nullish coalescing operator to provide a default value for a variable that might be null or undefined. This is useful for handling API responses that might not return data.
const response = apiResponse ?? 'default value';Combining with Logical OR for Fallbacks
Combine the nullish coalescing operator with the logical OR operator to provide a default value that is an object if both user settings and default settings are null or undefined. This showcases how nullish coalescing can be used in conjunction with other logical operators for more complex fallback mechanisms.
const settings = userSettings ?? defaultSettings || {};Similar to the nullish coalescing operator, the optional chaining plugin (@babel/plugin-proposal-optional-chaining) allows developers to safely access deeply nested properties of an object without having to check for the existence of each level in the chain. While nullish coalescing provides a way to handle null or undefined values, optional chaining helps in accessing properties that might not exist. Both enhance code readability and safety.
The lodash.get function from the lodash library allows developers to access properties of an object safely, providing a default value if the property does not exist. While it serves a similar purpose in safely handling data that might be undefined or null, it does so in a different manner compared to the nullish coalescing operator, which is a language feature transformed by the @babel/plugin-proposal-nullish-coalescing-operator.
Remove nullish coalescing operator
See our website @babel/plugin-proposal-nullish-coalescing-operator for more information.
Using npm:
npm install --save-dev @babel/plugin-proposal-nullish-coalescing-operator
or using yarn:
yarn add @babel/plugin-proposal-nullish-coalescing-operator --dev
v7.18.6 (2022-06-27)
babel-parser
...<...> followed by newline or binary operator (@nicolo-ribaudo)babel-generator, babel-parser, babel-preset-env, babel-template
babel-helper-remap-async-to-generator, babel-plugin-proposal-async-generator-functions
await in computed class keys (@Yokubjon-J)babel-plugin-transform-parameters
babel-core
babel-core (@liuxingbaoyu)babel-core, babel-helper-check-duplicate-nodes, babel-plugin-bugfix-safari-id-destructuring-collision-in-function-expression, babel-plugin-bugfix-v8-spread-parameters-in-optional-chaining, babel-plugin-proposal-destructuring-private, babel-plugin-proposal-optional-chaining, babel-plugin-transform-runtime
import { types } from "@babel/core" with native ESM (@nicolo-ribaudo)babel-standalone
proposal-unicode-sets-regex to @babel/standalone (@nicolo-ribaudo)babel-generator, babel-types
babel-code-frame, babel-core, babel-generator, babel-helper-annotate-as-pure, babel-helper-builder-binary-assignment-operator-visitor, babel-helper-builder-react-jsx, babel-helper-check-duplicate-nodes, 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-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-split-export-declaration, babel-helper-transform-fixture-test-runner, babel-helper-validator-option, babel-helper-wrap-function, babel-helpers, babel-highlight, babel-plugin-bugfix-v8-spread-parameters-in-optional-chaining, babel-plugin-external-helpers, babel-plugin-proposal-async-generator-functions, babel-plugin-proposal-class-static-block, babel-plugin-proposal-decorators, babel-plugin-proposal-destructuring-private, babel-plugin-proposal-function-bind, babel-plugin-proposal-function-sent, babel-plugin-proposal-json-strings, babel-plugin-proposal-object-rest-spread, babel-plugin-proposal-optional-chaining, babel-plugin-proposal-partial-application, babel-plugin-proposal-pipeline-operator, babel-plugin-proposal-private-property-in-object, babel-plugin-proposal-record-and-tuple, babel-plugin-syntax-typescript, 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-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-modules-amd, babel-plugin-transform-modules-commonjs, babel-plugin-transform-modules-systemjs, babel-plugin-transform-modules-umd, babel-plugin-transform-object-super, babel-plugin-transform-parameters, 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-source, babel-plugin-transform-react-jsx, babel-plugin-transform-runtime, babel-plugin-transform-typescript, babel-plugin-transform-unicode-escapes, babel-preset-env, babel-preset-typescript, babel-standalone, babel-template, babel-traverse, babel-types
babel-core, babel-helper-transform-fixture-test-runner, babel-plugin-transform-destructuring
FAQs
Remove nullish coalescing operator
We found that @babel/plugin-proposal-nullish-coalescing-operator 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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