@babel/helper-builder-binary-assignment-operator-visitor

What is @babel/helper-builder-binary-assignment-operator-visitor?

@babel/helper-builder-binary-assignment-operator-visitor is a Babel helper module that assists in transforming binary assignment operators (like +=, -=, etc.) in JavaScript code. It provides utilities to create visitors for these operators, making it easier to handle and transform them during the Babel plugin development process.

What are @babel/helper-builder-binary-assignment-operator-visitor's main functionalities?

Transforming Binary Assignment Operators

This feature allows you to transform binary assignment operators like += into their expanded form. The code sample demonstrates how to create a visitor that transforms the += operator into a binary expression using the @babel/helper-builder-binary-assignment-operator-visitor package.

const { types: t } = require('@babel/core');
const build = require('@babel/helper-builder-binary-assignment-operator-visitor');

const visitor = build({
  operator: "+=",
  build: (left, right) => t.binaryExpression(
    "+",
    left,
    right
  )
});

const plugin = {
  visitor: {
    AssignmentExpression(path) {
      if (path.node.operator === "+=") {
        visitor(path);
      }
    }
  }
};

0

README

@babel/helper-builder-binary-assignment-operator-visitor

Helper function to build binary assignment operator visitors

See our website @babel/helper-builder-binary-assignment-operator-visitor for more information.

Install

Using npm:

npm install --save @babel/helper-builder-binary-assignment-operator-visitor

or using yarn:

yarn add @babel/helper-builder-binary-assignment-operator-visitor

Changelog

v7.25.9 (2024-10-22)

:bug: Bug Fix

• babel-parser, babel-template, babel-types
  • #16905 fix: Keep type annotations in syntacticPlaceholders mode (@liuxingbaoyu)
• babel-helper-compilation-targets, babel-preset-env
  • #16907 fix: support BROWSERSLIST{,_CONFIG} env (@JLHwung)
• Other
  • #16884 Analyze ClassAccessorProperty to prevent the no-undef rule (@victorenator)

:house: Internal

• babel-helper-transform-fixture-test-runner
  • #16914 remove test options flaky (@JLHwung)

:running_woman: Performance

• babel-parser, babel-types
  • #16918 perf: Make VISITOR_KEYS etc. faster to access (@liuxingbaoyu)