@dr.pogodin/babel-plugin-react-css-modules/dist/createSpreadMapper.js

Transforms styleName to className using compile time CSS module resolution.

import { NodePath } from '@babel/traverse';
import { cloneNode,
// type Expression,
memberExpression, binaryExpression, conditionalExpression, stringLiteral, logicalExpression, identifier, isJSXSpreadAttribute } from '@babel/types';
import optionsDefaults from "./schemas/optionsDefaults.js";
const createSpreadMapper = (path, stats) => {
  const result = {};
  let {
    attributeNames
  } = optionsDefaults;
  if (stats.opts && stats.opts.attributeNames) {
    attributeNames = {
      ...attributeNames,
      ...stats.opts.attributeNames
    };
  }
  const attributes = Object.entries(attributeNames).filter(pair => pair[1]);
  const attributeKeys = attributes.map(pair => pair[0]);
  const spreadAttributes = path.node.openingElement.attributes.filter(attribute => isJSXSpreadAttribute(attribute));
  spreadAttributes.forEach(spread => {
    attributeKeys.forEach(attributeKey => {
      const destinationName = attributeNames[attributeKey];
      if (result[destinationName]) {
        result[destinationName] = binaryExpression('+', result[destinationName], conditionalExpression(cloneNode(spread.argument), binaryExpression('+', stringLiteral(' '), logicalExpression('||', memberExpression(cloneNode(spread.argument), identifier(destinationName)), stringLiteral(''))), stringLiteral('')));
      } else {
        result[destinationName] = conditionalExpression(cloneNode(spread.argument), logicalExpression('||', memberExpression(cloneNode(spread.argument), identifier(destinationName)), stringLiteral('')), stringLiteral(''));
      }
    });
  });
  return result;
};
export default createSpreadMapper;
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