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.
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);
}
}
}
};