@fal-works/esbuild-plugin-global-externals/lib/on-load.js

esbuild plugin for replacing imports with global variables.

const createCjsContents = (variableName) => `module.exports = ${variableName};`;
const a = 0;
const createEsmContents = (variableName, namedExports, defaultExport) => {
  const codeElements = defaultExport ? [`export default ${variableName};`] : [];
  if (namedExports && namedExports.length) {
    const exportNames = [...new Set(namedExports)].join(", ");
    codeElements.push(`const { ${exportNames} } = ${variableName};`);
    codeElements.push(`export { ${exportNames} };`);
  }
  return codeElements.join("\n");
};

/**
 * Creates value for `OnLoadResult.contents`.
 */
export const createContents = (moduleInfo) => {
  const { type, varName, namedExports, defaultExport } = moduleInfo;
  switch (type) {
    case "esm":
      return createEsmContents(varName, namedExports, defaultExport);
    case "cjs":
      return createCjsContents(varName);
  }
};