This plugin transforms ES2015 modules to UMD. 

This plugin transforms ES2015 modules to UMD

hzoo

nicolo-ribaudo

jlhwung

existentialism

@babel/plugin-transform-modules-umd

import { declare } from '@babel/helper-plugin-utils';

import { basename, extname } from 'path';

import { isModule, getModuleName, rewriteModuleStatementsAndPrepareHeader, hasExports, isSideEffectImport, wrapInterop, buildNamespaceInitStatements, ensureStatementsHoisted } from '@babel/helper-module-transforms';

import { template, types } from '@babel/core';

const buildPrerequisiteAssignment = template(`

  GLOBAL_REFERENCE = GLOBAL_REFERENCE || {}

    if (typeof define === "function" && define.amd) {

      define(MODULE_NAME, AMD_ARGUMENTS, factory);

    } else if (typeof exports !== "undefined") {

    typeof globalThis !== "undefined" ? globalThis

      : typeof self !== "undefined" ? self

  const constantReexports = api.assumption("constantReexports") ?? options.loose;

  const enumerableModuleMeta = api.assumption("enumerableModuleMeta") ?? options.loose;

  function buildBrowserInit(browserGlobals, exactGlobals, filename, moduleName) {

    const moduleNameOrBasename = moduleName ? moduleName.value : basename(filename, extname(filename));

    let globalToAssign = types.memberExpression(types.identifier("global"), types.identifier(types.toIdentifier(moduleNameOrBasename)));

      const globalName = browserGlobals[moduleNameOrBasename];

        const members = globalName.split(".");

        globalToAssign = members.slice(1).reduce((accum, curr) => {

          initAssignments.push(buildPrerequisiteAssignment({

            GLOBAL_REFERENCE: types.cloneNode(accum)

          return types.memberExpression(accum, types.identifier(curr));

        }, types.memberExpression(types.identifier("global"), types.identifier(members[0])));

    initAssignments.push(types.expressionStatement(types.assignmentExpression("=", globalToAssign, types.memberExpression(types.identifier("mod"), types.identifier("exports")))));

  function buildBrowserArg(browserGlobals, exactGlobals, source) {

      const globalRef = browserGlobals[source];

        memberExpression = globalRef.split(".").reduce((accum, curr) => types.memberExpression(accum, types.identifier(curr)), types.identifier("global"));

        memberExpression = types.memberExpression(types.identifier("global"), types.identifier(types.toIdentifier(source)));

      const requireName = basename(source, extname(source));

      const globalName = browserGlobals[requireName] || requireName;

      memberExpression = types.memberExpression(types.identifier("global"), types.identifier(types.toIdentifier(globalName)));

          const browserGlobals = globals || {};

          const moduleName = getModuleName(this.file.opts, options);

          if (moduleName) moduleNameLiteral = types.stringLiteral(moduleName);

          } = rewriteModuleStatementsAndPrepareHeader(path, {

            filename: this.file.opts.filename

            amdArgs.push(types.stringLiteral("exports"));

            commonjsArgs.push(types.identifier("exports"));

            browserArgs.push(types.memberExpression(types.identifier("mod"), types.identifier("exports")));

            importNames.push(types.identifier(meta.exportName));

          for (const [source, metadata] of meta.source) {

            amdArgs.push(types.stringLiteral(source));

            commonjsArgs.push(types.callExpression(types.identifier("require"), [types.stringLiteral(source)]));

            browserArgs.push(buildBrowserArg(browserGlobals, exactGlobals, source));

            importNames.push(types.identifier(metadata.name));

            if (!isSideEffectImport(metadata)) {

              const interop = wrapInterop(path, types.identifier(metadata.name), metadata.interop);

                const header = types.expressionStatement(types.assignmentExpression("=", types.identifier(metadata.name), interop));

            headers.push(...buildNamespaceInitStatements(meta, metadata, constantReexports));

          ensureStatementsHoisted(headers);

          path.unshiftContainer("body", headers);

  "name": "@babel/plugin-transform-modules-umd",

  "description": "This plugin transforms ES2015 modules to UMD",

    "url": "https://github.com/babel/babel.git",

    "directory": "packages/babel-plugin-transform-modules-umd"

  "homepage": "https://babel.dev/docs/en/next/babel-plugin-transform-modules-umd",

    "@babel/helper-module-transforms": "^8.0.0-alpha.7",

    "@babel/helper-plugin-utils": "^8.0.0-alpha.7"

    "@babel/helper-module-transforms": "^8.0.0-alpha.8",

    "@babel/helper-plugin-utils": "^8.0.0-alpha.8"

    "@babel/helper-plugin-test-runner": "^8.0.0-alpha.7",

    "@babel/plugin-external-helpers": "^8.0.0-alpha.7"

    "@babel/helper-plugin-test-runner": "^8.0.0-alpha.8",

    "@babel/plugin-external-helpers": "^8.0.0-alpha.8"

    "node": "^16.20.0 || ^18.16.0 || >=20.0.0"

  "author": "The Babel Team (https://babel.dev/team)",

		@@ -29,3 +29,3 @@ import { declare } from '@babel/helper-plugin-utils';
		var index = declare((api, options) => {
		api.assertVersion("8.0.0-alpha.7");
		api.assertVersion("8.0.0-alpha.8");
		const {
		@@ -32,0 +32,0 @@ globals,

Worsened metrics

Dependency changes

		{
		"name": "@babel/plugin-transform-modules-umd",
		"version": "8.0.0-alpha.7",
		"version": "8.0.0-alpha.8",
		"description": "This plugin transforms ES2015 modules to UMD",
		@@ -17,4 +17,4 @@ "repository": {
		"dependencies": {
		"@babel/helper-module-transforms": "^8.0.0-alpha.7",
		"@babel/helper-plugin-utils": "^8.0.0-alpha.7"
		"@babel/helper-module-transforms": "^8.0.0-alpha.8",
		"@babel/helper-plugin-utils": "^8.0.0-alpha.8"
		},
		@@ -25,8 +25,8 @@ "keywords": [
		"peerDependencies": {
		"@babel/core": "^8.0.0-alpha.7"
		"@babel/core": "^8.0.0-alpha.8"
		},
		"devDependencies": {
		"@babel/core": "^8.0.0-alpha.7",
		"@babel/helper-plugin-test-runner": "^8.0.0-alpha.7",
		"@babel/plugin-external-helpers": "^8.0.0-alpha.7"
		"@babel/core": "^8.0.0-alpha.8",
		"@babel/helper-plugin-test-runner": "^8.0.0-alpha.8",
		"@babel/plugin-external-helpers": "^8.0.0-alpha.8"
		},
		@@ -33,0 +33,0 @@ "engines": {