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@babel/generator
Advanced tools
The @babel/generator package is a part of the Babel toolchain that is responsible for generating code from an Abstract Syntax Tree (AST). It takes an AST as input and turns it into code with source maps, if desired. This is particularly useful when you want to transform code using Babel and then generate the transformed code.
Code Generation from AST
This feature allows you to generate code from an AST. The code sample demonstrates parsing a piece of code into an AST and then generating the code back from the AST.
const { parse } = require('@babel/parser');
const generate = require('@babel/generator').default;
const code = 'let a = 1;';
const ast = parse(code);
const output = generate(ast, {}, code);
console.log(output.code);
Source Map Support
This feature enables the generation of source maps along with the generated code. The code sample shows how to generate a source map for the code that is being generated from an AST.
const { parse } = require('@babel/parser');
const generate = require('@babel/generator').default;
const code = 'let a = 1;';
const ast = parse(code);
const output = generate(ast, { sourceMaps: true }, code);
console.log(output.map);
Escodegen is an ECMAScript code generator that takes an AST and converts it back into code. It is similar to @babel/generator but does not provide the same level of integration with the Babel ecosystem.
Recast is a JavaScript AST tool that allows you to parse, visit, and transform the nodes of your AST, and then regenerate JavaScript code. It preserves the original formatting as much as possible and can be used in conjunction with Babel.
Astring is a tiny and fast JavaScript code generator from an ESTree-compliant AST. It is smaller and may be faster than @babel/generator but lacks the extensive plugin system and integrations that Babel offers.
Turns an AST into code.
See our website @babel/generator for more information or the issues associated with this package.
Using npm:
npm install --save-dev @babel/generator
or using yarn:
yarn add @babel/generator --dev
v7.21.9 (2023-05-22)
babel-parser
babel-generator
retainLines
is true
(@liuxingbaoyu)babel-template
export { x }
stuck in infinite loop (@liuxingbaoyu)babel-compat-data
, babel-preset-env
FAQs
Turns an AST into code.
The npm package @babel/generator receives a total of 45,586,884 weekly downloads. As such, @babel/generator popularity was classified as popular.
We found that @babel/generator 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.
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