@babel/plugin-syntax-do-expressions

What is @babel/plugin-syntax-do-expressions?

@babel/plugin-syntax-do-expressions is a Babel plugin that allows you to use the 'do' expression syntax in your JavaScript code. This syntax enables you to use block statements as expressions, which can be useful for complex logic that needs to return a value.

What are @babel/plugin-syntax-do-expressions's main functionalities?

Basic do expression

This feature allows you to use a block statement as an expression. The block can contain multiple statements, and the value of the last statement is returned as the value of the 'do' expression.

const result = do {
  if (x > 10) {
    'greater';
  } else {
    'lesser';
  }
};

Complex logic in do expression

This feature allows you to include more complex logic within the 'do' expression, such as variable declarations and multiple conditional statements.

const result = do {
  let temp = x * 2;
  if (temp > 20) {
    'large';
  } else {
    'small';
  }
};

Other packages similar to @babel/plugin-syntax-do-expressions

@babel/plugin-proposal-pipeline-operator

This Babel plugin allows you to use the pipeline operator (|>) in your JavaScript code. The pipeline operator enables a more readable and functional approach to chaining functions. Unlike 'do' expressions, which are used for block statements, the pipeline operator is used for function composition.

@babel/plugin-proposal-optional-chaining

This Babel plugin allows you to use optional chaining (?.) in your JavaScript code. Optional chaining provides a way to simplify accessing deeply nested properties without having to explicitly check for the existence of each level. While 'do' expressions are used for block statements, optional chaining is used for safely accessing object properties.

README

@babel/plugin-syntax-do-expressions

Allow parsing of do expressions

See our website @babel/plugin-syntax-do-expressions for more information.

Install

Using npm:

npm install --save-dev @babel/plugin-syntax-do-expressions

or using yarn:

yarn add @babel/plugin-syntax-do-expressions --dev