babel-template
Advanced tools
Package description
The babel-template npm package is a utility that allows developers to create reusable AST (Abstract Syntax Tree) templates based on a string input. It simplifies the process of generating AST nodes programmatically, which is particularly useful when working with Babel plugins that manipulate code.
AST Template Creation
This feature allows the creation of AST nodes from a template string. The example shows how to create a variable declaration that requires a module, with placeholders for the module name and source.
const template = require('babel-template');
const buildRequire = template(`
var IMPORT_NAME = require(SOURCE);
`);
const ast = buildRequire({
IMPORT_NAME: 'myModule',
SOURCE: '"my-module"'
});This package is an official part of the Babel ecosystem and serves a similar purpose to babel-template, providing API improvements and better integration with the latest Babel versions. It offers enhanced usability and security features.
Recast is another tool for manipulating ASTs. It focuses on preserving the original formatting as much as possible, which is different from babel-template's approach of creating new AST nodes from templates. Recast is better suited for applications where code formatting needs to be maintained.
Readme
Generate an AST from a string template.
$ npm install babel-template
import template from 'babel-template';
import generate from 'babel-generator';
import * as t from 'babel-types';
const buildRequire = template(`
var IMPORT_NAME = require(SOURCE);
`);
const ast = buildRequire({
IMPORT_NAME: t.identifier('myModule'),
SOURCE: t.stringLiteral('my-module')
});
console.log(generate(ast).code);
var myModule = require('my-module');
FAQs
Generate an AST from a string template.
The npm package babel-template receives a total of 2,287,824 weekly downloads. As such, babel-template popularity was classified as popular.
We found that babel-template demonstrated a not healthy version release cadence and project activity because the last version was released a year ago. It has 5 open source maintainers collaborating on the project.
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