import { basename, extname, dirname, relative, resolve, join, sep } from 'path';
import { makeLegalIdentifier, createFilter, attachScopes, extractAssignedNames } from '@rollup/pluginutils';
import { existsSync, readFileSync, statSync } from 'fs';
import getCommonDir from 'commondir';
import glob from 'glob';
import { walk } from 'estree-walker';
import MagicString from 'magic-string';
import isReference from 'is-reference';

var version = "22.0.0-4";
var peerDependencies = {
	rollup: "^2.61.1"
};

function tryParse(parse, code, id) {
  try {
    return parse(code, { allowReturnOutsideFunction: true });
  } catch (err) {
    err.message += ` in ${id}`;
    throw err;
  }
}

const firstpassGlobal = /\b(?:require|module|exports|global)\b/;

const firstpassNoGlobal = /\b(?:require|module|exports)\b/;

function hasCjsKeywords(code, ignoreGlobal) {
  const firstpass = ignoreGlobal ? firstpassNoGlobal : firstpassGlobal;
  return firstpass.test(code);
}

/* eslint-disable no-underscore-dangle */

function analyzeTopLevelStatements(parse, code, id) {
  const ast = tryParse(parse, code, id);

  let isEsModule = false;
  let hasDefaultExport = false;
  let hasNamedExports = false;

  for (const node of ast.body) {
    switch (node.type) {
      case 'ExportDefaultDeclaration':
        isEsModule = true;
        hasDefaultExport = true;
        break;
      case 'ExportNamedDeclaration':
        isEsModule = true;
        if (node.declaration) {
          hasNamedExports = true;
        } else {
          for (const specifier of node.specifiers) {
            if (specifier.exported.name === 'default') {
              hasDefaultExport = true;
            } else {
              hasNamedExports = true;
            }
          }
        }
        break;
      case 'ExportAllDeclaration':
        isEsModule = true;
        if (node.exported && node.exported.name === 'default') {
          hasDefaultExport = true;
        } else {
          hasNamedExports = true;
        }
        break;
      case 'ImportDeclaration':
        isEsModule = true;
        break;
    }
  }

  return { isEsModule, hasDefaultExport, hasNamedExports, ast };
}

/* eslint-disable import/prefer-default-export */

function deconflict(scopes, globals, identifier) {
  let i = 1;
  let deconflicted = makeLegalIdentifier(identifier);
  const hasConflicts = () =>
    scopes.some((scope) => scope.contains(deconflicted)) || globals.has(deconflicted);

  while (hasConflicts()) {
    deconflicted = makeLegalIdentifier(`${identifier}_${i}`);
    i += 1;
  }

  for (const scope of scopes) {
    scope.declarations[deconflicted] = true;
  }

  return deconflicted;
}

function getName(id) {
  const name = makeLegalIdentifier(basename(id, extname(id)));
  if (name !== 'index') {
    return name;
  }
  return makeLegalIdentifier(basename(dirname(id)));
}

function normalizePathSlashes(path) {
  return path.replace(/\\/g, '/');
}

const getVirtualPathForDynamicRequirePath = (path, commonDir) =>
  `/${normalizePathSlashes(relative(commonDir, path))}`;

function capitalize(name) {
  return name[0].toUpperCase() + name.slice(1);
}

function getStrictRequiresFilter({ strictRequires }) {
  switch (strictRequires) {
    case true:
      return { strictRequiresFilter: () => true, detectCyclesAndConditional: false };
    // eslint-disable-next-line no-undefined
    case undefined:
    case 'auto':
    case 'debug':
    case null:
      return { strictRequiresFilter: () => false, detectCyclesAndConditional: true };
    case false:
      return { strictRequiresFilter: () => false, detectCyclesAndConditional: false };
    default:
      if (typeof strictRequires === 'string' || Array.isArray(strictRequires)) {
        return {
          strictRequiresFilter: createFilter(strictRequires),
          detectCyclesAndConditional: false
        };
      }
      throw new Error('Unexpected value for "strictRequires" option.');
  }
}

function getPackageEntryPoint(dirPath) {
  let entryPoint = 'index.js';

  try {
    if (existsSync(join(dirPath, 'package.json'))) {
      entryPoint =
        JSON.parse(readFileSync(join(dirPath, 'package.json'), { encoding: 'utf8' })).main ||
        entryPoint;
    }
  } catch (ignored) {
    // ignored
  }

  return entryPoint;
}

function isDirectory(path) {
  try {
    if (statSync(path).isDirectory()) return true;
  } catch (ignored) {
    // Nothing to do here
  }
  return false;
}

function getDynamicRequireModules(patterns, dynamicRequireRoot) {
  const dynamicRequireModules = new Map();
  const dirNames = new Set();
  for (const pattern of !patterns || Array.isArray(patterns) ? patterns || [] : [patterns]) {
    const isNegated = pattern.startsWith('!');
    const modifyMap = (targetPath, resolvedPath) =>
      isNegated
        ? dynamicRequireModules.delete(targetPath)
        : dynamicRequireModules.set(targetPath, resolvedPath);
    for (const path of glob.sync(isNegated ? pattern.substr(1) : pattern)) {
      const resolvedPath = resolve(path);
      const requirePath = normalizePathSlashes(resolvedPath);
      if (isDirectory(resolvedPath)) {
        dirNames.add(resolvedPath);
        const modulePath = resolve(join(resolvedPath, getPackageEntryPoint(path)));
        modifyMap(requirePath, modulePath);
        modifyMap(normalizePathSlashes(modulePath), modulePath);
      } else {
        dirNames.add(dirname(resolvedPath));
        modifyMap(requirePath, resolvedPath);
      }
    }
  }
  return {
    commonDir: dirNames.size ? getCommonDir([...dirNames, dynamicRequireRoot]) : null,
    dynamicRequireModules
  };
}

const FAILED_REQUIRE_ERROR = `throw new Error('Could not dynamically require "' + path + '". Please configure the dynamicRequireTargets or/and ignoreDynamicRequires option of @rollup/plugin-commonjs appropriately for this require call to work.');`;

const COMMONJS_REQUIRE_EXPORT = 'commonjsRequire';
const CREATE_COMMONJS_REQUIRE_EXPORT = 'createCommonjsRequire';

function getDynamicModuleRegistry(
  isDynamicRequireModulesEnabled,
  dynamicRequireModules,
  commonDir,
  ignoreDynamicRequires
) {
  if (!isDynamicRequireModulesEnabled) {
    return `export function ${COMMONJS_REQUIRE_EXPORT}(path) {
	${FAILED_REQUIRE_ERROR}
}`;
  }
  const dynamicModuleImports = [...dynamicRequireModules.values()]
    .map(
      (id, index) =>
        `import ${
          id.endsWith('.json') ? `json${index}` : `{ __require as require${index} }`
        } from ${JSON.stringify(id)};`
    )
    .join('\n');
  const dynamicModuleProps = [...dynamicRequireModules.keys()]
    .map(
      (id, index) =>
        `\t\t${JSON.stringify(getVirtualPathForDynamicRequirePath(id, commonDir))}: ${
          id.endsWith('.json') ? `function () { return json${index}; }` : `require${index}`
        }`
    )
    .join(',\n');
  return `${dynamicModuleImports}

var dynamicModules;

function getDynamicModules() {
	return dynamicModules || (dynamicModules = {
${dynamicModuleProps}
	});
}

export function ${CREATE_COMMONJS_REQUIRE_EXPORT}(originalModuleDir) {
	function handleRequire(path) {
		var resolvedPath = commonjsResolve(path, originalModuleDir);
		if (resolvedPath !== null) {
			return getDynamicModules()[resolvedPath]();
		}
		${ignoreDynamicRequires ? 'return require(path);' : FAILED_REQUIRE_ERROR}
	}
	handleRequire.resolve = function (path) {
		var resolvedPath = commonjsResolve(path, originalModuleDir);
		if (resolvedPath !== null) {
			return resolvedPath;
		}
		return require.resolve(path);
	}
	return handleRequire;
}

function commonjsResolve (path, originalModuleDir) {
	var shouldTryNodeModules = isPossibleNodeModulesPath(path);
	path = normalize(path);
	var relPath;
	if (path[0] === '/') {
		originalModuleDir = '';
	}
	var modules = getDynamicModules();
	var checkedExtensions = ['', '.js', '.json'];
	while (true) {
		if (!shouldTryNodeModules) {
			relPath = normalize(originalModuleDir + '/' + path);
		} else {
			relPath = normalize(originalModuleDir + '/node_modules/' + path);
		}

		if (relPath.endsWith('/..')) {
			break; // Travelled too far up, avoid infinite loop
		}

		for (var extensionIndex = 0; extensionIndex < checkedExtensions.length; extensionIndex++) {
			var resolvedPath = relPath + checkedExtensions[extensionIndex];
			if (modules[resolvedPath]) {
				return resolvedPath;
			}
		}
		if (!shouldTryNodeModules) break;
		var nextDir = normalize(originalModuleDir + '/..');
		if (nextDir === originalModuleDir) break;
		originalModuleDir = nextDir;
	}
	return null;
}

function isPossibleNodeModulesPath (modulePath) {
	var c0 = modulePath[0];
	if (c0 === '/' || c0 === '\\\\') return false;
	var c1 = modulePath[1], c2 = modulePath[2];
	if ((c0 === '.' && (!c1 || c1 === '/' || c1 === '\\\\')) ||
		(c0 === '.' && c1 === '.' && (!c2 || c2 === '/' || c2 === '\\\\'))) return false;
	if (c1 === ':' && (c2 === '/' || c2 === '\\\\')) return false;
	return true;
}

function normalize (path) {
	path = path.replace(/\\\\/g, '/');
	var parts = path.split('/');
	var slashed = parts[0] === '';
	for (var i = 1; i < parts.length; i++) {
		if (parts[i] === '.' || parts[i] === '') {
			parts.splice(i--, 1);
		}
	}
	for (var i = 1; i < parts.length; i++) {
		if (parts[i] !== '..') continue;
		if (i > 0 && parts[i - 1] !== '..' && parts[i - 1] !== '.') {
			parts.splice(--i, 2);
			i--;
		}
	}
	path = parts.join('/');
	if (slashed && path[0] !== '/') path = '/' + path;
	else if (path.length === 0) path = '.';
	return path;
}`;
}

const isWrappedId = (id, suffix) => id.endsWith(suffix);
const wrapId = (id, suffix) => `\0${id}${suffix}`;
const unwrapId = (wrappedId, suffix) => wrappedId.slice(1, -suffix.length);

const PROXY_SUFFIX = '?commonjs-proxy';
const WRAPPED_SUFFIX = '?commonjs-wrapped';
const EXTERNAL_SUFFIX = '?commonjs-external';
const EXPORTS_SUFFIX = '?commonjs-exports';
const MODULE_SUFFIX = '?commonjs-module';
const ES_IMPORT_SUFFIX = '?es-import';

const DYNAMIC_MODULES_ID = '\0commonjs-dynamic-modules';
const HELPERS_ID = '\0commonjsHelpers.js';

const IS_WRAPPED_COMMONJS = 'withRequireFunction';

// `x['default']` is used instead of `x.default` for backward compatibility with ES3 browsers.
// Minifiers like uglify will usually transpile it back if compatibility with ES3 is not enabled.
// This could be improved by inspecting Rollup's "generatedCode" option

const HELPERS = `
export var commonjsGlobal = typeof globalThis !== 'undefined' ? globalThis : typeof window !== 'undefined' ? window : typeof global !== 'undefined' ? global : typeof self !== 'undefined' ? self : {};

export function getDefaultExportFromCjs (x) {
	return x && x.__esModule && Object.prototype.hasOwnProperty.call(x, 'default') ? x['default'] : x;
}

export function getDefaultExportFromNamespaceIfPresent (n) {
	return n && Object.prototype.hasOwnProperty.call(n, 'default') ? n['default'] : n;
}

export function getDefaultExportFromNamespaceIfNotNamed (n) {
	return n && Object.prototype.hasOwnProperty.call(n, 'default') && Object.keys(n).length === 1 ? n['default'] : n;
}

export function getAugmentedNamespace(n) {
  var f = n.default;
	if (typeof f == "function") {
		var a = function () {
			return f.apply(this, arguments);
		};
		a.prototype = f.prototype;
  } else a = {};
  Object.defineProperty(a, '__esModule', {value: true});
	Object.keys(n).forEach(function (k) {
		var d = Object.getOwnPropertyDescriptor(n, k);
		Object.defineProperty(a, k, d.get ? d : {
			enumerable: true,
			get: function () {
				return n[k];
			}
		});
	});
	return a;
}
`;

function getHelpersModule() {
  return HELPERS;
}

function getUnknownRequireProxy(id, requireReturnsDefault) {
  if (requireReturnsDefault === true || id.endsWith('.json')) {
    return `export { default } from ${JSON.stringify(id)};`;
  }
  const name = getName(id);
  const exported =
    requireReturnsDefault === 'auto'
      ? `import { getDefaultExportFromNamespaceIfNotNamed } from "${HELPERS_ID}"; export default /*@__PURE__*/getDefaultExportFromNamespaceIfNotNamed(${name});`
      : requireReturnsDefault === 'preferred'
      ? `import { getDefaultExportFromNamespaceIfPresent } from "${HELPERS_ID}"; export default /*@__PURE__*/getDefaultExportFromNamespaceIfPresent(${name});`
      : !requireReturnsDefault
      ? `import { getAugmentedNamespace } from "${HELPERS_ID}"; export default /*@__PURE__*/getAugmentedNamespace(${name});`
      : `export default ${name};`;
  return `import * as ${name} from ${JSON.stringify(id)}; ${exported}`;
}

async function getStaticRequireProxy(
  id,
  requireReturnsDefault,
  esModulesWithDefaultExport,
  esModulesWithNamedExports,
  loadModule
) {
  const name = getName(id);
  const {
    meta: { commonjs: commonjsMeta }
  } = await loadModule({ id });
  if (commonjsMeta && commonjsMeta.isCommonJS) {
    return `export { __moduleExports as default } from ${JSON.stringify(id)};`;
  } else if (!commonjsMeta) {
    return getUnknownRequireProxy(id, requireReturnsDefault);
  } else if (!requireReturnsDefault) {
    return `import { getAugmentedNamespace } from "${HELPERS_ID}"; import * as ${name} from ${JSON.stringify(
      id
    )}; export default /*@__PURE__*/getAugmentedNamespace(${name});`;
  } else if (
    requireReturnsDefault !== true &&
    (requireReturnsDefault === 'namespace' ||
      !esModulesWithDefaultExport.has(id) ||
      (requireReturnsDefault === 'auto' && esModulesWithNamedExports.has(id)))
  ) {
    return `import * as ${name} from ${JSON.stringify(id)}; export default ${name};`;
  }
  return `export { default } from ${JSON.stringify(id)};`;
}

function getEsImportProxy(id, defaultIsModuleExports) {
  const name = getName(id);
  const exportsName = `${name}Exports`;
  const requireModule = `require${capitalize(name)}`;
  let code =
    `import { getDefaultExportFromCjs } from "${HELPERS_ID}";\n` +
    `import { __require as ${requireModule} } from ${JSON.stringify(id)};\n` +
    `var ${exportsName} = ${requireModule}();\n` +
    `export { ${exportsName} as __moduleExports };`;
  if (defaultIsModuleExports) {
    code += `\nexport { ${exportsName} as default };`;
  } else {
    code += `export default /*@__PURE__*/getDefaultExportFromCjs(${exportsName});`;
  }
  return {
    code,
    syntheticNamedExports: '__moduleExports',
    meta: { commonjs: { isCommonJS: false } }
  };
}

/* eslint-disable no-param-reassign, no-undefined */

function getCandidatesForExtension(resolved, extension) {
  return [resolved + extension, `${resolved}${sep}index${extension}`];
}

function getCandidates(resolved, extensions) {
  return extensions.reduce(
    (paths, extension) => paths.concat(getCandidatesForExtension(resolved, extension)),
    [resolved]
  );
}

function resolveExtensions(importee, importer, extensions) {
  // not our problem
  if (importee[0] !== '.' || !importer) return undefined;

  const resolved = resolve(dirname(importer), importee);
  const candidates = getCandidates(resolved, extensions);

  for (let i = 0; i < candidates.length; i += 1) {
    try {
      const stats = statSync(candidates[i]);
      if (stats.isFile()) return { id: candidates[i] };
    } catch (err) {
      /* noop */
    }
  }

  return undefined;
}

function getResolveId(extensions) {
  return async function resolveId(importee, importer, resolveOptions) {
    // We assume that all requires are pre-resolved
    if (
      resolveOptions.custom &&
      resolveOptions.custom['node-resolve'] &&
      resolveOptions.custom['node-resolve'].isRequire
    ) {
      return null;
    }
    if (isWrappedId(importee, WRAPPED_SUFFIX)) {
      return unwrapId(importee, WRAPPED_SUFFIX);
    }

    if (
      isWrappedId(importee, MODULE_SUFFIX) ||
      isWrappedId(importee, EXPORTS_SUFFIX) ||
      isWrappedId(importee, PROXY_SUFFIX) ||
      isWrappedId(importee, ES_IMPORT_SUFFIX) ||
      isWrappedId(importee, EXTERNAL_SUFFIX) ||
      importee.startsWith(HELPERS_ID) ||
      importee === DYNAMIC_MODULES_ID
    ) {
      return importee;
    }

    if (importer) {
      if (
        importer === DYNAMIC_MODULES_ID ||
        // Proxies are only importing resolved ids, no need to resolve again
        isWrappedId(importer, PROXY_SUFFIX) ||
        isWrappedId(importer, ES_IMPORT_SUFFIX)
      ) {
        return importee;
      }
      if (isWrappedId(importer, EXTERNAL_SUFFIX)) {
        // We need to return null for unresolved imports so that the proper warning is shown
        if (!(await this.resolve(importee, importer, { skipSelf: true }))) {
          return null;
        }
        // For other external imports, we need to make sure they are handled as external
        return { id: importee, external: true };
      }
    }

    if (importee.startsWith('\0')) {
      return null;
    }

    // If this is an entry point or ESM import, we need to figure out if the importee is wrapped and
    // if that is the case, we need to add a proxy.
    const customOptions = resolveOptions.custom;

    // If this is a require, we do not need a proxy
    if (customOptions && customOptions['node-resolve'] && customOptions['node-resolve'].isRequire) {
      return null;
    }

    const resolved =
      (await this.resolve(importee, importer, Object.assign({ skipSelf: true }, resolveOptions))) ||
      resolveExtensions(importee, importer, extensions);
    if (!resolved || resolved.external) {
      return resolved;
    }
    const {
      meta: { commonjs: commonjsMeta }
    } = await this.load(resolved);
    if (commonjsMeta && commonjsMeta.isCommonJS === IS_WRAPPED_COMMONJS) {
      return wrapId(resolved.id, ES_IMPORT_SUFFIX);
    }
    return resolved;
  };
}

function getResolveRequireSourcesAndGetMeta(extensions, detectCyclesAndConditional) {
  const knownCjsModuleTypes = Object.create(null);
  const requiredIds = Object.create(null);
  const unconditionallyRequiredIds = Object.create(null);
  const dependencies = Object.create(null);
  const getDependencies = (id) => dependencies[id] || (dependencies[id] = new Set());

  const isCyclic = (id) => {
    const dependenciesToCheck = new Set(getDependencies(id));
    for (const dependency of dependenciesToCheck) {
      if (dependency === id) {
        return true;
      }
      for (const childDependency of getDependencies(dependency)) {
        dependenciesToCheck.add(childDependency);
      }
    }
    return false;
  };

  const fullyAnalyzedModules = Object.create(null);

  const getTypeForFullyAnalyzedModule = (id) => {
    const knownType = knownCjsModuleTypes[id];
    if (
      knownType === IS_WRAPPED_COMMONJS ||
      !detectCyclesAndConditional ||
      fullyAnalyzedModules[id]
    ) {
      return knownType;
    }
    fullyAnalyzedModules[id] = true;
    if (isCyclic(id)) {
      return (knownCjsModuleTypes[id] = IS_WRAPPED_COMMONJS);
    }
    return knownType;
  };

  return {
    getWrappedIds: () =>
      Object.keys(knownCjsModuleTypes).filter(
        (id) => knownCjsModuleTypes[id] === IS_WRAPPED_COMMONJS
      ),
    isRequiredId: (id) => requiredIds[id],
    resolveRequireSourcesAndGetMeta: (rollupContext) => async (
      parentId,
      isParentCommonJS,
      sources
    ) => {
      knownCjsModuleTypes[parentId] = isParentCommonJS;
      if (
        detectCyclesAndConditional &&
        knownCjsModuleTypes[parentId] &&
        requiredIds[parentId] &&
        !unconditionallyRequiredIds[parentId]
      ) {
        knownCjsModuleTypes[parentId] = IS_WRAPPED_COMMONJS;
      }
      const requireTargets = await Promise.all(
        sources.map(async ({ source, isConditional }) => {
          // Never analyze or proxy internal modules
          if (source.startsWith('\0')) {
            return { id: source, allowProxy: false };
          }
          const resolved =
            (await rollupContext.resolve(source, parentId, {
              custom: { 'node-resolve': { isRequire: true } }
            })) || resolveExtensions(source, parentId, extensions);
          if (!resolved) {
            return { id: wrapId(source, EXTERNAL_SUFFIX), allowProxy: false };
          }
          const childId = resolved.id;
          if (resolved.external) {
            return { id: wrapId(childId, EXTERNAL_SUFFIX), allowProxy: false };
          }
          requiredIds[childId] = true;
          if (!(isConditional || knownCjsModuleTypes[parentId] === IS_WRAPPED_COMMONJS)) {
            unconditionallyRequiredIds[childId] = true;
          }

          getDependencies(parentId).add(childId);
          if (!isCyclic(childId)) {
            // This makes sure the current transform handler waits for all direct dependencies to be
            // loaded and transformed and therefore for all transitive CommonJS dependencies to be
            // loaded as well so that all cycles have been found and knownCjsModuleTypes is reliable.
            await rollupContext.load(resolved);
          } else if (detectCyclesAndConditional && knownCjsModuleTypes[parentId]) {
            knownCjsModuleTypes[parentId] = IS_WRAPPED_COMMONJS;
          }
          return { id: childId, allowProxy: true };
        })
      );
      return {
        requireTargets: requireTargets.map(({ id: dependencyId, allowProxy }, index) => {
          const isCommonJS = getTypeForFullyAnalyzedModule(dependencyId);
          return {
            source: sources[index].source,
            id: allowProxy
              ? isCommonJS === IS_WRAPPED_COMMONJS
                ? wrapId(dependencyId, WRAPPED_SUFFIX)
                : wrapId(dependencyId, PROXY_SUFFIX)
              : dependencyId,
            isCommonJS
          };
        }),
        usesRequireWrapper: getTypeForFullyAnalyzedModule(parentId) === IS_WRAPPED_COMMONJS
      };
    }
  };
}

function validateVersion(actualVersion, peerDependencyVersion, name) {
  const versionRegexp = /\^(\d+\.\d+\.\d+)/g;
  let minMajor = Infinity;
  let minMinor = Infinity;
  let minPatch = Infinity;
  let foundVersion;
  // eslint-disable-next-line no-cond-assign
  while ((foundVersion = versionRegexp.exec(peerDependencyVersion))) {
    const [foundMajor, foundMinor, foundPatch] = foundVersion[1].split('.').map(Number);
    if (foundMajor < minMajor) {
      minMajor = foundMajor;
      minMinor = foundMinor;
      minPatch = foundPatch;
    }
  }
  if (!actualVersion) {
    throw new Error(
      `Insufficient ${name} version: "@rollup/plugin-commonjs" requires at least ${name}@${minMajor}.${minMinor}.${minPatch}.`
    );
  }
  const [major, minor, patch] = actualVersion.split('.').map(Number);
  if (
    major < minMajor ||
    (major === minMajor && (minor < minMinor || (minor === minMinor && patch < minPatch)))
  ) {
    throw new Error(
      `Insufficient ${name} version: "@rollup/plugin-commonjs" requires at least ${name}@${minMajor}.${minMinor}.${minPatch} but found ${name}@${actualVersion}.`
    );
  }
}

const operators = {
  '==': (x) => equals(x.left, x.right, false),

  '!=': (x) => not(operators['=='](x)),

  '===': (x) => equals(x.left, x.right, true),

  '!==': (x) => not(operators['==='](x)),

  '!': (x) => isFalsy(x.argument),

  '&&': (x) => isTruthy(x.left) && isTruthy(x.right),

  '||': (x) => isTruthy(x.left) || isTruthy(x.right)
};

function not(value) {
  return value === null ? value : !value;
}

function equals(a, b, strict) {
  if (a.type !== b.type) return null;
  // eslint-disable-next-line eqeqeq
  if (a.type === 'Literal') return strict ? a.value === b.value : a.value == b.value;
  return null;
}

function isTruthy(node) {
  if (!node) return false;
  if (node.type === 'Literal') return !!node.value;
  if (node.type === 'ParenthesizedExpression') return isTruthy(node.expression);
  if (node.operator in operators) return operators[node.operator](node);
  return null;
}

function isFalsy(node) {
  return not(isTruthy(node));
}

function getKeypath(node) {
  const parts = [];

  while (node.type === 'MemberExpression') {
    if (node.computed) return null;

    parts.unshift(node.property.name);
    // eslint-disable-next-line no-param-reassign
    node = node.object;
  }

  if (node.type !== 'Identifier') return null;

  const { name } = node;
  parts.unshift(name);

  return { name, keypath: parts.join('.') };
}

const KEY_COMPILED_ESM = '__esModule';

function isDefineCompiledEsm(node) {
  const definedProperty =
    getDefinePropertyCallName(node, 'exports') || getDefinePropertyCallName(node, 'module.exports');
  if (definedProperty && definedProperty.key === KEY_COMPILED_ESM) {
    return isTruthy(definedProperty.value);
  }
  return false;
}

function getDefinePropertyCallName(node, targetName) {
  const {
    callee: { object, property }
  } = node;
  if (!object || object.type !== 'Identifier' || object.name !== 'Object') return;
  if (!property || property.type !== 'Identifier' || property.name !== 'defineProperty') return;
  if (node.arguments.length !== 3) return;

  const targetNames = targetName.split('.');
  const [target, key, value] = node.arguments;
  if (targetNames.length === 1) {
    if (target.type !== 'Identifier' || target.name !== targetNames[0]) {
      return;
    }
  }

  if (targetNames.length === 2) {
    if (
      target.type !== 'MemberExpression' ||
      target.object.name !== targetNames[0] ||
      target.property.name !== targetNames[1]
    ) {
      return;
    }
  }

  if (value.type !== 'ObjectExpression' || !value.properties) return;

  const valueProperty = value.properties.find((p) => p.key && p.key.name === 'value');
  if (!valueProperty || !valueProperty.value) return;

  // eslint-disable-next-line consistent-return
  return { key: key.value, value: valueProperty.value };
}

function isShorthandProperty(parent) {
  return parent && parent.type === 'Property' && parent.shorthand;
}

function hasDefineEsmProperty(node) {
  return node.properties.some((property) => {
    if (
      property.type === 'Property' &&
      property.key.type === 'Identifier' &&
      property.key.name === '__esModule' &&
      isTruthy(property.value)
    ) {
      return true;
    }
    return false;
  });
}

function wrapCode(magicString, uses, moduleName, exportsName) {
  const args = [];
  const passedArgs = [];
  if (uses.module) {
    args.push('module');
    passedArgs.push(moduleName);
  }
  if (uses.exports) {
    args.push('exports');
    passedArgs.push(exportsName);
  }
  magicString
    .trim()
    .indent('\t')
    .prepend(`(function (${args.join(', ')}) {\n`)
    .append(`\n} (${passedArgs.join(', ')}));`);
}

function rewriteExportsAndGetExportsBlock(
  magicString,
  moduleName,
  exportsName,
  wrapped,
  moduleExportsAssignments,
  firstTopLevelModuleExportsAssignment,
  exportsAssignmentsByName,
  topLevelAssignments,
  defineCompiledEsmExpressions,
  deconflictedExportNames,
  code,
  HELPERS_NAME,
  exportMode,
  detectWrappedDefault,
  defaultIsModuleExports,
  usesRequireWrapper,
  requireName
) {
  const exports = [];
  const exportDeclarations = [];

  if (usesRequireWrapper) {
    getExportsWhenUsingRequireWrapper(
      magicString,
      wrapped,
      exportMode,
      exports,
      moduleExportsAssignments,
      exportsAssignmentsByName,
      moduleName,
      exportsName,
      requireName,
      defineCompiledEsmExpressions
    );
  } else if (exportMode === 'replace') {
    getExportsForReplacedModuleExports(
      magicString,
      exports,
      exportDeclarations,
      moduleExportsAssignments,
      firstTopLevelModuleExportsAssignment,
      exportsName
    );
  } else {
    exports.push(`${exportsName} as __moduleExports`);
    if (wrapped) {
      getExportsWhenWrapping(
        exportDeclarations,
        exportsName,
        detectWrappedDefault,
        HELPERS_NAME,
        defaultIsModuleExports
      );
    } else {
      getExports(
        magicString,
        exports,
        exportDeclarations,
        moduleExportsAssignments,
        exportsAssignmentsByName,
        deconflictedExportNames,
        topLevelAssignments,
        moduleName,
        exportsName,
        defineCompiledEsmExpressions,
        HELPERS_NAME,
        defaultIsModuleExports
      );
    }
  }
  if (exports.length) {
    exportDeclarations.push(`export { ${exports.join(', ')} };`);
  }

  return `\n\n${exportDeclarations.join('\n')}`;
}

function getExportsWhenUsingRequireWrapper(
  magicString,
  wrapped,
  exportMode,
  exports,
  moduleExportsAssignments,
  exportsAssignmentsByName,
  moduleName,
  exportsName,
  requireName,
  defineCompiledEsmExpressions
) {
  if (!wrapped) {
    if (exportMode === 'replace') {
      for (const { left } of moduleExportsAssignments) {
        magicString.overwrite(left.start, left.end, exportsName);
      }
    } else {
      // Collect and rewrite module.exports assignments
      for (const { left } of moduleExportsAssignments) {
        magicString.overwrite(left.start, left.end, `${moduleName}.exports`);
      }
      // Collect and rewrite named exports
      for (const [exportName, { nodes }] of exportsAssignmentsByName) {
        for (const node of nodes) {
          magicString.overwrite(node.start, node.left.end, `${exportsName}.${exportName}`);
        }
      }
      // Collect and rewrite exports.__esModule assignments
      for (const expression of defineCompiledEsmExpressions) {
        const moduleExportsExpression =
          expression.type === 'CallExpression' ? expression.arguments[0] : expression.left.object;
        magicString.overwrite(
          moduleExportsExpression.start,
          moduleExportsExpression.end,
          exportsName
        );
      }
    }
  }
  exports.push(`${requireName} as __require`);
}

function getExportsForReplacedModuleExports(
  magicString,
  exports,
  exportDeclarations,
  moduleExportsAssignments,
  firstTopLevelModuleExportsAssignment,
  exportsName
) {
  for (const { left } of moduleExportsAssignments) {
    magicString.overwrite(left.start, left.end, exportsName);
  }
  magicString.prependRight(firstTopLevelModuleExportsAssignment.left.start, 'var ');
  exports.push(`${exportsName} as __moduleExports`);
  exportDeclarations.push(`export default ${exportsName};`);
}

function getExportsWhenWrapping(
  exportDeclarations,
  exportsName,
  detectWrappedDefault,
  HELPERS_NAME,
  defaultIsModuleExports
) {
  exportDeclarations.push(
    `export default ${
      detectWrappedDefault && defaultIsModuleExports === 'auto'
        ? `/*@__PURE__*/${HELPERS_NAME}.getDefaultExportFromCjs(${exportsName})`
        : defaultIsModuleExports === false
        ? `${exportsName}.default`
        : exportsName
    };`
  );
}

function getExports(
  magicString,
  exports,
  exportDeclarations,
  moduleExportsAssignments,
  exportsAssignmentsByName,
  deconflictedExportNames,
  topLevelAssignments,
  moduleName,
  exportsName,
  defineCompiledEsmExpressions,
  HELPERS_NAME,
  defaultIsModuleExports
) {
  let deconflictedDefaultExportName;
  // Collect and rewrite module.exports assignments
  for (const { left } of moduleExportsAssignments) {
    magicString.overwrite(left.start, left.end, `${moduleName}.exports`);
  }

  // Collect and rewrite named exports
  for (const [exportName, { nodes }] of exportsAssignmentsByName) {
    const deconflicted = deconflictedExportNames[exportName];
    let needsDeclaration = true;
    for (const node of nodes) {
      let replacement = `${deconflicted} = ${exportsName}.${exportName}`;
      if (needsDeclaration && topLevelAssignments.has(node)) {
        replacement = `var ${replacement}`;
        needsDeclaration = false;
      }
      magicString.overwrite(node.start, node.left.end, replacement);
    }
    if (needsDeclaration) {
      magicString.prepend(`var ${deconflicted};\n`);
    }

    if (exportName === 'default') {
      deconflictedDefaultExportName = deconflicted;
    } else {
      exports.push(exportName === deconflicted ? exportName : `${deconflicted} as ${exportName}`);
    }
  }

  // Collect and rewrite exports.__esModule assignments
  let isRestorableCompiledEsm = false;
  for (const expression of defineCompiledEsmExpressions) {
    isRestorableCompiledEsm = true;
    const moduleExportsExpression =
      expression.type === 'CallExpression' ? expression.arguments[0] : expression.left.object;
    magicString.overwrite(moduleExportsExpression.start, moduleExportsExpression.end, exportsName);
  }

  if (!isRestorableCompiledEsm || defaultIsModuleExports === true) {
    exports.push(`${exportsName} as default`);
  } else if (moduleExportsAssignments.length === 0 || defaultIsModuleExports === false) {
    exports.push(`${deconflictedDefaultExportName || exportsName} as default`);
  } else {
    exportDeclarations.push(
      `export default /*@__PURE__*/${HELPERS_NAME}.getDefaultExportFromCjs(${exportsName});`
    );
  }
}

function isRequireExpression(node, scope) {
  if (!node) return false;
  if (node.type !== 'CallExpression') return false;

  // Weird case of `require()` or `module.require()` without arguments
  if (node.arguments.length === 0) return false;

  return isRequire(node.callee, scope);
}

function isRequire(node, scope) {
  return (
    (node.type === 'Identifier' && node.name === 'require' && !scope.contains('require')) ||
    (node.type === 'MemberExpression' && isModuleRequire(node, scope))
  );
}

function isModuleRequire({ object, property }, scope) {
  return (
    object.type === 'Identifier' &&
    object.name === 'module' &&
    property.type === 'Identifier' &&
    property.name === 'require' &&
    !scope.contains('module')
  );
}

function hasDynamicArguments(node) {
  return (
    node.arguments.length > 1 ||
    (node.arguments[0].type !== 'Literal' &&
      (node.arguments[0].type !== 'TemplateLiteral' || node.arguments[0].expressions.length > 0))
  );
}

const reservedMethod = { resolve: true, cache: true, main: true };

function isNodeRequirePropertyAccess(parent) {
  return parent && parent.property && reservedMethod[parent.property.name];
}

function getRequireStringArg(node) {
  return node.arguments[0].type === 'Literal'
    ? node.arguments[0].value
    : node.arguments[0].quasis[0].value.cooked;
}

function getRequireHandlers() {
  const requireExpressions = [];

  function addRequireStatement(
    sourceId,
    node,
    scope,
    usesReturnValue,
    isInsideTryBlock,
    isInsideConditional,
    toBeRemoved
  ) {
    requireExpressions.push({
      sourceId,
      node,
      scope,
      usesReturnValue,
      isInsideTryBlock,
      isInsideConditional,
      toBeRemoved
    });
  }

  async function rewriteRequireExpressionsAndGetImportBlock(
    magicString,
    topLevelDeclarations,
    reassignedNames,
    helpersName,
    dynamicRequireName,
    moduleName,
    exportsName,
    id,
    exportMode,
    resolveRequireSourcesAndGetMeta,
    needsRequireWrapper,
    isEsModule,
    isDynamicRequireModulesEnabled,
    getIgnoreTryCatchRequireStatementMode
  ) {
    const imports = [];
    imports.push(`import * as ${helpersName} from "${HELPERS_ID}";`);
    if (dynamicRequireName) {
      imports.push(
        `import { ${
          isDynamicRequireModulesEnabled ? CREATE_COMMONJS_REQUIRE_EXPORT : COMMONJS_REQUIRE_EXPORT
        } as ${dynamicRequireName} } from "${DYNAMIC_MODULES_ID}";`
      );
    }
    if (exportMode === 'module') {
      imports.push(
        `import { __module as ${moduleName}, exports as ${exportsName} } from ${JSON.stringify(
          wrapId(id, MODULE_SUFFIX)
        )}`
      );
    } else if (exportMode === 'exports') {
      imports.push(
        `import { __exports as ${exportsName} } from ${JSON.stringify(wrapId(id, EXPORTS_SUFFIX))}`
      );
    }
    const requiresBySource = collectSources(requireExpressions);
    const { requireTargets, usesRequireWrapper } = await resolveRequireSourcesAndGetMeta(
      id,
      needsRequireWrapper ? IS_WRAPPED_COMMONJS : !isEsModule,
      Object.keys(requiresBySource).map((source) => {
        return {
          source,
          isConditional: requiresBySource[source].every((require) => require.isInsideConditional)
        };
      })
    );
    processRequireExpressions(
      imports,
      requireTargets,
      requiresBySource,
      getIgnoreTryCatchRequireStatementMode,
      magicString
    );
    return {
      importBlock: imports.length ? `${imports.join('\n')}\n\n` : '',
      usesRequireWrapper
    };
  }

  return {
    addRequireStatement,
    rewriteRequireExpressionsAndGetImportBlock
  };
}

function collectSources(requireExpressions) {
  const requiresBySource = Object.create(null);
  for (const requireExpression of requireExpressions) {
    const { sourceId } = requireExpression;
    if (!requiresBySource[sourceId]) {
      requiresBySource[sourceId] = [];
    }
    const requires = requiresBySource[sourceId];
    requires.push(requireExpression);
  }
  return requiresBySource;
}

function processRequireExpressions(
  imports,
  requireTargets,
  requiresBySource,
  getIgnoreTryCatchRequireStatementMode,
  magicString
) {
  const generateRequireName = getGenerateRequireName();
  for (const { source, id: resolvedId, isCommonJS } of requireTargets) {
    const requires = requiresBySource[source];
    const name = generateRequireName(requires);
    let usesRequired = false;
    let needsImport = false;
    for (const { node, usesReturnValue, toBeRemoved, isInsideTryBlock } of requires) {
      const { canConvertRequire, shouldRemoveRequire } =
        isInsideTryBlock && isWrappedId(resolvedId, EXTERNAL_SUFFIX)
          ? getIgnoreTryCatchRequireStatementMode(source)
          : { canConvertRequire: true, shouldRemoveRequire: false };
      if (shouldRemoveRequire) {
        if (usesReturnValue) {
          magicString.overwrite(node.start, node.end, 'undefined');
        } else {
          magicString.remove(toBeRemoved.start, toBeRemoved.end);
        }
      } else if (canConvertRequire) {
        needsImport = true;
        if (isCommonJS === IS_WRAPPED_COMMONJS) {
          magicString.overwrite(node.start, node.end, `${name}()`);
        } else if (usesReturnValue) {
          usesRequired = true;
          magicString.overwrite(node.start, node.end, name);
        } else {
          magicString.remove(toBeRemoved.start, toBeRemoved.end);
        }
      }
    }
    if (needsImport) {
      if (isCommonJS === IS_WRAPPED_COMMONJS) {
        imports.push(`import { __require as ${name} } from ${JSON.stringify(resolvedId)};`);
      } else {
        imports.push(`import ${usesRequired ? `${name} from ` : ''}${JSON.stringify(resolvedId)};`);
      }
    }
  }
}

function getGenerateRequireName() {
  let uid = 0;
  return (requires) => {
    let name;
    const hasNameConflict = ({ scope }) => scope.contains(name);
    do {
      name = `require$$${uid}`;
      uid += 1;
    } while (requires.some(hasNameConflict));
    return name;
  };
}

/* eslint-disable no-param-reassign, no-shadow, no-underscore-dangle, no-continue */

const exportsPattern = /^(?:module\.)?exports(?:\.([a-zA-Z_$][a-zA-Z_$0-9]*))?$/;

const functionType = /^(?:FunctionDeclaration|FunctionExpression|ArrowFunctionExpression)$/;

async function transformCommonjs(
  parse,
  code,
  id,
  isEsModule,
  ignoreGlobal,
  ignoreRequire,
  ignoreDynamicRequires,
  getIgnoreTryCatchRequireStatementMode,
  sourceMap,
  isDynamicRequireModulesEnabled,
  dynamicRequireModules,
  commonDir,
  astCache,
  defaultIsModuleExports,
  needsRequireWrapper,
  resolveRequireSourcesAndGetMeta,
  isRequired,
  checkDynamicRequire
) {
  const ast = astCache || tryParse(parse, code, id);
  const magicString = new MagicString(code);
  const uses = {
    module: false,
    exports: false,
    global: false,
    require: false
  };
  const virtualDynamicRequirePath =
    isDynamicRequireModulesEnabled && getVirtualPathForDynamicRequirePath(dirname(id), commonDir);
  let scope = attachScopes(ast, 'scope');
  let lexicalDepth = 0;
  let programDepth = 0;
  let currentTryBlockEnd = null;
  let shouldWrap = false;

  const globals = new Set();
  // A conditionalNode is a node for which execution is not guaranteed. If such a node is a require
  // or contains nested requires, those should be handled as function calls unless there is an
  // unconditional require elsewhere.
  let currentConditionalNodeEnd = null;
  const conditionalNodes = new Set();
  const { addRequireStatement, rewriteRequireExpressionsAndGetImportBlock } = getRequireHandlers();

  // See which names are assigned to. This is necessary to prevent
  // illegally replacing `var foo = require('foo')` with `import foo from 'foo'`,
  // where `foo` is later reassigned. (This happens in the wild. CommonJS, sigh)
  const reassignedNames = new Set();
  const topLevelDeclarations = [];
  const skippedNodes = new Set();
  const moduleAccessScopes = new Set([scope]);
  const exportsAccessScopes = new Set([scope]);
  const moduleExportsAssignments = [];
  let firstTopLevelModuleExportsAssignment = null;
  const exportsAssignmentsByName = new Map();
  const topLevelAssignments = new Set();
  const topLevelDefineCompiledEsmExpressions = [];
  const replacedGlobal = [];
  const replacedDynamicRequires = [];

  walk(ast, {
    enter(node, parent) {
      if (skippedNodes.has(node)) {
        this.skip();
        return;
      }

      if (currentTryBlockEnd !== null && node.start > currentTryBlockEnd) {
        currentTryBlockEnd = null;
      }
      if (currentConditionalNodeEnd !== null && node.start > currentConditionalNodeEnd) {
        currentConditionalNodeEnd = null;
      }
      if (currentConditionalNodeEnd === null && conditionalNodes.has(node)) {
        currentConditionalNodeEnd = node.end;
      }

      programDepth += 1;
      if (node.scope) ({ scope } = node);
      if (functionType.test(node.type)) lexicalDepth += 1;
      if (sourceMap) {
        magicString.addSourcemapLocation(node.start);
        magicString.addSourcemapLocation(node.end);
      }

      // eslint-disable-next-line default-case
      switch (node.type) {
        case 'AssignmentExpression':
          if (node.left.type === 'MemberExpression') {
            const flattened = getKeypath(node.left);
            if (!flattened || scope.contains(flattened.name)) return;

            const exportsPatternMatch = exportsPattern.exec(flattened.keypath);
            if (!exportsPatternMatch || flattened.keypath === 'exports') return;

            const [, exportName] = exportsPatternMatch;
            uses[flattened.name] = true;

            // we're dealing with `module.exports = ...` or `[module.]exports.foo = ...` –
            if (flattened.keypath === 'module.exports') {
              moduleExportsAssignments.push(node);
              if (programDepth > 3) {
                moduleAccessScopes.add(scope);
              } else if (!firstTopLevelModuleExportsAssignment) {
                firstTopLevelModuleExportsAssignment = node;
              }

              if (defaultIsModuleExports === false) {
                shouldWrap = true;
              } else if (defaultIsModuleExports === 'auto') {
                if (node.right.type === 'ObjectExpression') {
                  if (hasDefineEsmProperty(node.right)) {
                    shouldWrap = true;
                  }
                } else if (defaultIsModuleExports === false) {
                  shouldWrap = true;
                }
              }
            } else if (exportName === KEY_COMPILED_ESM) {
              if (programDepth > 3) {
                shouldWrap = true;
              } else {
                topLevelDefineCompiledEsmExpressions.push(node);
              }
            } else {
              const exportsAssignments = exportsAssignmentsByName.get(exportName) || {
                nodes: [],
                scopes: new Set()
              };
              exportsAssignments.nodes.push(node);
              exportsAssignments.scopes.add(scope);
              exportsAccessScopes.add(scope);
              exportsAssignmentsByName.set(exportName, exportsAssignments);
              if (programDepth <= 3) {
                topLevelAssignments.add(node);
              }
            }

            skippedNodes.add(node.left);
          } else {
            for (const name of extractAssignedNames(node.left)) {
              reassignedNames.add(name);
            }
          }
          return;
        case 'CallExpression': {
          if (isDefineCompiledEsm(node)) {
            if (programDepth === 3 && parent.type === 'ExpressionStatement') {
              // skip special handling for [module.]exports until we know we render this
              skippedNodes.add(node.arguments[0]);
              topLevelDefineCompiledEsmExpressions.push(node);
            } else {
              shouldWrap = true;
            }
            return;
          }

          // Transform require.resolve
          if (
            isDynamicRequireModulesEnabled &&
            node.callee.object &&
            isRequire(node.callee.object, scope) &&
            node.callee.property.name === 'resolve'
          ) {
            checkDynamicRequire(node.start);
            uses.require = true;
            const requireNode = node.callee.object;
            replacedDynamicRequires.push(requireNode);
            return;
          }

          if (!isRequireExpression(node, scope)) {
            return;
          }

          skippedNodes.add(node.callee);
          uses.require = true;

          if (hasDynamicArguments(node)) {
            if (isDynamicRequireModulesEnabled) {
              checkDynamicRequire(node.start);
            }
            if (!ignoreDynamicRequires) {
              replacedDynamicRequires.push(node.callee);
            }
            return;
          }

          const requireStringArg = getRequireStringArg(node);
          if (!ignoreRequire(requireStringArg)) {
            const usesReturnValue = parent.type !== 'ExpressionStatement';
            addRequireStatement(
              requireStringArg,
              node,
              scope,
              usesReturnValue,
              currentTryBlockEnd !== null,
              currentConditionalNodeEnd !== null,
              parent.type === 'ExpressionStatement' ? parent : node
            );
          }
          return;
        }
        case 'ConditionalExpression':
        case 'IfStatement':
          // skip dead branches
          if (isFalsy(node.test)) {
            skippedNodes.add(node.consequent);
          } else if (isTruthy(node.test)) {
            if (node.alternate) {
              skippedNodes.add(node.alternate);
            }
          } else {
            conditionalNodes.add(node.consequent);
            if (node.alternate) {
              conditionalNodes.add(node.alternate);
            }
          }
          return;
        case 'ArrowFunctionExpression':
        case 'FunctionDeclaration':
        case 'FunctionExpression':
          // requires in functions should be conditional unless it is an IIFE
          if (
            currentConditionalNodeEnd === null &&
            !(parent.type === 'CallExpression' && parent.callee === node)
          ) {
            currentConditionalNodeEnd = node.end;
          }
          return;
        case 'Identifier': {
          const { name } = node;
          if (!isReference(node, parent) || scope.contains(name)) return;
          switch (name) {
            case 'require':
              uses.require = true;
              if (isNodeRequirePropertyAccess(parent)) {
                return;
              }
              if (!ignoreDynamicRequires) {
                if (isShorthandProperty(parent)) {
                  magicString.prependRight(node.start, 'require: ');
                }
                replacedDynamicRequires.push(node);
              }
              return;
            case 'module':
            case 'exports':
              shouldWrap = true;
              uses[name] = true;
              return;
            case 'global':
              uses.global = true;
              if (!ignoreGlobal) {
                replacedGlobal.push(node);
              }
              return;
            case 'define':
              magicString.overwrite(node.start, node.end, 'undefined', {
                storeName: true
              });
              return;
            default:
              globals.add(name);
              return;
          }
        }
        case 'LogicalExpression':
          // skip dead branches
          if (node.operator === '&&') {
            if (isFalsy(node.left)) {
              skippedNodes.add(node.right);
            } else if (!isTruthy(node.left)) {
              conditionalNodes.add(node.right);
            }
          } else if (node.operator === '||') {
            if (isTruthy(node.left)) {
              skippedNodes.add(node.right);
            } else if (!isFalsy(node.left)) {
              conditionalNodes.add(node.right);
            }
          }
          return;
        case 'MemberExpression':
          if (!isDynamicRequireModulesEnabled && isModuleRequire(node, scope)) {
            uses.require = true;
            replacedDynamicRequires.push(node);
            skippedNodes.add(node.object);
            skippedNodes.add(node.property);
          }
          return;
        case 'ReturnStatement':
          // if top-level return, we need to wrap it
          if (lexicalDepth === 0) {
            shouldWrap = true;
          }
          return;
        case 'ThisExpression':
          // rewrite top-level `this` as `commonjsHelpers.commonjsGlobal`
          if (lexicalDepth === 0) {
            uses.global = true;
            if (!ignoreGlobal) {
              replacedGlobal.push(node);
            }
          }
          return;
        case 'TryStatement':
          if (currentTryBlockEnd === null) {
            currentTryBlockEnd = node.block.end;
          }
          if (currentConditionalNodeEnd === null) {
            currentConditionalNodeEnd = node.end;
          }
          return;
        case 'UnaryExpression':
          // rewrite `typeof module`, `typeof module.exports` and `typeof exports` (https://github.com/rollup/rollup-plugin-commonjs/issues/151)
          if (node.operator === 'typeof') {
            const flattened = getKeypath(node.argument);
            if (!flattened) return;

            if (scope.contains(flattened.name)) return;

            if (
              !isEsModule &&
              (flattened.keypath === 'module.exports' ||
                flattened.keypath === 'module' ||
                flattened.keypath === 'exports')
            ) {
              magicString.overwrite(node.start, node.end, `'object'`, {
                storeName: false
              });
            }
          }
          return;
        case 'VariableDeclaration':
          if (!scope.parent) {
            topLevelDeclarations.push(node);
          }
      }
    },

    leave(node) {
      programDepth -= 1;
      if (node.scope) scope = scope.parent;
      if (functionType.test(node.type)) lexicalDepth -= 1;
    }
  });

  const nameBase = getName(id);
  const exportsName = deconflict([...exportsAccessScopes], globals, nameBase);
  const moduleName = deconflict([...moduleAccessScopes], globals, `${nameBase}Module`);
  const requireName = deconflict([scope], globals, `require${capitalize(nameBase)}`);
  const isRequiredName = deconflict([scope], globals, `hasRequired${capitalize(nameBase)}`);
  const helpersName = deconflict([scope], globals, 'commonjsHelpers');
  const dynamicRequireName =
    replacedDynamicRequires.length > 0 &&
    deconflict(
      [scope],
      globals,
      isDynamicRequireModulesEnabled ? CREATE_COMMONJS_REQUIRE_EXPORT : COMMONJS_REQUIRE_EXPORT
    );
  const deconflictedExportNames = Object.create(null);
  for (const [exportName, { scopes }] of exportsAssignmentsByName) {
    deconflictedExportNames[exportName] = deconflict([...scopes], globals, exportName);
  }

  for (const node of replacedGlobal) {
    magicString.overwrite(node.start, node.end, `${helpersName}.commonjsGlobal`, {
      storeName: true
    });
  }
  for (const node of replacedDynamicRequires) {
    magicString.overwrite(
      node.start,
      node.end,
      isDynamicRequireModulesEnabled
        ? `${dynamicRequireName}(${JSON.stringify(virtualDynamicRequirePath)})`
        : dynamicRequireName,
      {
        contentOnly: true,
        storeName: true
      }
    );
  }

  // We cannot wrap ES/mixed modules
  shouldWrap = !isEsModule && (shouldWrap || (uses.exports && moduleExportsAssignments.length > 0));
  const detectWrappedDefault =
    shouldWrap &&
    (topLevelDefineCompiledEsmExpressions.length > 0 || code.indexOf('__esModule') >= 0);

  if (
    !(
      shouldWrap ||
      isRequired ||
      uses.module ||
      uses.exports ||
      uses.require ||
      topLevelDefineCompiledEsmExpressions.length > 0
    ) &&
    (ignoreGlobal || !uses.global)
  ) {
    return { meta: { commonjs: { isCommonJS: false, isMixedModule: false } } };
  }

  let leadingComment = '';
  if (code.startsWith('/*')) {
    const commentEnd = code.indexOf('*/', 2) + 2;
    leadingComment = `${code.slice(0, commentEnd)}\n`;
    magicString.remove(0, commentEnd).trim();
  }

  const exportMode = shouldWrap
    ? uses.module
      ? 'module'
      : 'exports'
    : firstTopLevelModuleExportsAssignment
    ? exportsAssignmentsByName.size === 0 && topLevelDefineCompiledEsmExpressions.length === 0
      ? 'replace'
      : 'module'
    : moduleExportsAssignments.length === 0
    ? 'exports'
    : 'module';

  const { importBlock, usesRequireWrapper } = await rewriteRequireExpressionsAndGetImportBlock(
    magicString,
    topLevelDeclarations,
    reassignedNames,
    helpersName,
    dynamicRequireName,
    moduleName,
    exportsName,
    id,
    exportMode,
    resolveRequireSourcesAndGetMeta,
    needsRequireWrapper,
    isEsModule,
    isDynamicRequireModulesEnabled,
    getIgnoreTryCatchRequireStatementMode
  );
  const exportBlock = isEsModule
    ? ''
    : rewriteExportsAndGetExportsBlock(
        magicString,
        moduleName,
        exportsName,
        shouldWrap,
        moduleExportsAssignments,
        firstTopLevelModuleExportsAssignment,
        exportsAssignmentsByName,
        topLevelAssignments,
        topLevelDefineCompiledEsmExpressions,
        deconflictedExportNames,
        code,
        helpersName,
        exportMode,
        detectWrappedDefault,
        defaultIsModuleExports,
        usesRequireWrapper,
        requireName
      );

  if (shouldWrap) {
    wrapCode(magicString, uses, moduleName, exportsName);
  }

  if (usesRequireWrapper) {
    magicString.trim().indent('\t');
    magicString.prepend(
      `var ${isRequiredName};

function ${requireName} () {
\tif (${isRequiredName}) return ${exportsName};
\t${isRequiredName} = 1;
`
    ).append(`
\treturn ${exportsName};
}`);
    if (exportMode === 'replace') {
      magicString.prepend(`var ${exportsName};\n`);
    }
  }

  magicString
    .trim()
    .prepend(leadingComment + importBlock)
    .append(exportBlock);

  return {
    code: magicString.toString(),
    map: sourceMap ? magicString.generateMap() : null,
    syntheticNamedExports: isEsModule || usesRequireWrapper ? false : '__moduleExports',
    meta: {
      commonjs: {
        isCommonJS: !isEsModule && (usesRequireWrapper ? IS_WRAPPED_COMMONJS : true),
        isMixedModule: isEsModule
      }
    }
  };
}

function commonjs(options = {}) {
  const {
    ignoreGlobal,
    ignoreDynamicRequires,
    requireReturnsDefault: requireReturnsDefaultOption,
    esmExternals
  } = options;
  const extensions = options.extensions || ['.js'];
  const filter = createFilter(options.include, options.exclude);
  const { strictRequiresFilter, detectCyclesAndConditional } = getStrictRequiresFilter(options);

  const getRequireReturnsDefault =
    typeof requireReturnsDefaultOption === 'function'
      ? requireReturnsDefaultOption
      : () => requireReturnsDefaultOption;

  let esmExternalIds;
  const isEsmExternal =
    typeof esmExternals === 'function'
      ? esmExternals
      : Array.isArray(esmExternals)
      ? ((esmExternalIds = new Set(esmExternals)), (id) => esmExternalIds.has(id))
      : () => esmExternals;

  const defaultIsModuleExports =
    typeof options.defaultIsModuleExports === 'boolean' ? options.defaultIsModuleExports : 'auto';

  const {
    resolveRequireSourcesAndGetMeta,
    getWrappedIds,
    isRequiredId
  } = getResolveRequireSourcesAndGetMeta(extensions, detectCyclesAndConditional);
  const dynamicRequireRoot =
    typeof options.dynamicRequireRoot === 'string'
      ? resolve(options.dynamicRequireRoot)
      : process.cwd();
  const { commonDir, dynamicRequireModules } = getDynamicRequireModules(
    options.dynamicRequireTargets,
    dynamicRequireRoot
  );
  const isDynamicRequireModulesEnabled = dynamicRequireModules.size > 0;

  const esModulesWithDefaultExport = new Set();
  const esModulesWithNamedExports = new Set();

  const ignoreRequire =
    typeof options.ignore === 'function'
      ? options.ignore
      : Array.isArray(options.ignore)
      ? (id) => options.ignore.includes(id)
      : () => false;

  const getIgnoreTryCatchRequireStatementMode = (id) => {
    const mode =
      typeof options.ignoreTryCatch === 'function'
        ? options.ignoreTryCatch(id)
        : Array.isArray(options.ignoreTryCatch)
        ? options.ignoreTryCatch.includes(id)
        : typeof options.ignoreTryCatch !== 'undefined'
        ? options.ignoreTryCatch
        : true;

    return {
      canConvertRequire: mode !== 'remove' && mode !== true,
      shouldRemoveRequire: mode === 'remove'
    };
  };

  const resolveId = getResolveId(extensions);

  const sourceMap = options.sourceMap !== false;

  function transformAndCheckExports(code, id) {
    const { isEsModule, hasDefaultExport, hasNamedExports, ast } = analyzeTopLevelStatements(
      this.parse,
      code,
      id
    );
    if (hasDefaultExport) {
      esModulesWithDefaultExport.add(id);
    }
    if (hasNamedExports) {
      esModulesWithNamedExports.add(id);
    }

    if (
      !dynamicRequireModules.has(normalizePathSlashes(id)) &&
      (!(hasCjsKeywords(code, ignoreGlobal) || isRequiredId(id)) ||
        (isEsModule && !options.transformMixedEsModules))
    ) {
      return { meta: { commonjs: { isCommonJS: false } } };
    }

    const needsRequireWrapper =
      !isEsModule &&
      (dynamicRequireModules.has(normalizePathSlashes(id)) || strictRequiresFilter(id));

    const checkDynamicRequire = (position) => {
      if (id.indexOf(dynamicRequireRoot) !== 0) {
        this.error(
          {
            code: 'DYNAMIC_REQUIRE_OUTSIDE_ROOT',
            id,
            dynamicRequireRoot,
            message: `"${id}" contains dynamic require statements but it is not within the current dynamicRequireRoot "${dynamicRequireRoot}". You should set dynamicRequireRoot to "${dirname(
              id
            )}" or one of its parent directories.`
          },
          position
        );
      }
    };

    return transformCommonjs(
      this.parse,
      code,
      id,
      isEsModule,
      ignoreGlobal || isEsModule,
      ignoreRequire,
      ignoreDynamicRequires && !isDynamicRequireModulesEnabled,
      getIgnoreTryCatchRequireStatementMode,
      sourceMap,
      isDynamicRequireModulesEnabled,
      dynamicRequireModules,
      commonDir,
      ast,
      defaultIsModuleExports,
      needsRequireWrapper,
      resolveRequireSourcesAndGetMeta(this),
      isRequiredId(id),
      checkDynamicRequire
    );
  }

  return {
    name: 'commonjs',

    version,

    options(rawOptions) {
      // We inject the resolver in the beginning so that "catch-all-resolver" like node-resolver
      // do not prevent our plugin from resolving entry points ot proxies.
      const plugins = Array.isArray(rawOptions.plugins)
        ? rawOptions.plugins
        : rawOptions.plugins
        ? [rawOptions.plugins]
        : [];
      plugins.unshift({
        name: 'commonjs--resolver',
        resolveId
      });
      return { ...rawOptions, plugins };
    },

    buildStart({ plugins }) {
      validateVersion(this.meta.rollupVersion, peerDependencies.rollup, 'rollup');
      const nodeResolve = plugins.find(({ name }) => name === 'node-resolve');
      if (nodeResolve) {
        validateVersion(nodeResolve.version, '^13.0.6', '@rollup/plugin-node-resolve');
      }
      if (options.namedExports != null) {
        this.warn(
          'The namedExports option from "@rollup/plugin-commonjs" is deprecated. Named exports are now handled automatically.'
        );
      }
    },

    buildEnd() {
      if (options.strictRequires === 'debug') {
        const wrappedIds = getWrappedIds();
        if (wrappedIds.length) {
          this.warn({
            code: 'WRAPPED_IDS',
            ids: wrappedIds,
            message: `The commonjs plugin automatically wrapped the following files:\n[\n${wrappedIds
              .map((id) => `\t${JSON.stringify(relative(process.cwd(), id))}`)
              .join(',\n')}\n]`
          });
        } else {
          this.warn({
            code: 'WRAPPED_IDS',
            ids: wrappedIds,
            message: 'The commonjs plugin did not wrap any files.'
          });
        }
      }
    },

    load(id) {
      if (id === HELPERS_ID) {
        return getHelpersModule();
      }

      if (isWrappedId(id, MODULE_SUFFIX)) {
        const name = getName(unwrapId(id, MODULE_SUFFIX));
        return {
          code: `var ${name} = {exports: {}}; export {${name} as __module}`,
          syntheticNamedExports: '__module',
          meta: { commonjs: { isCommonJS: false } }
        };
      }

      if (isWrappedId(id, EXPORTS_SUFFIX)) {
        const name = getName(unwrapId(id, EXPORTS_SUFFIX));
        return {
          code: `var ${name} = {}; export {${name} as __exports}`,
          meta: { commonjs: { isCommonJS: false } }
        };
      }

      if (isWrappedId(id, EXTERNAL_SUFFIX)) {
        const actualId = unwrapId(id, EXTERNAL_SUFFIX);
        return getUnknownRequireProxy(
          actualId,
          isEsmExternal(actualId) ? getRequireReturnsDefault(actualId) : true
        );
      }

      if (isWrappedId(id, ES_IMPORT_SUFFIX)) {
        return getEsImportProxy(unwrapId(id, ES_IMPORT_SUFFIX), defaultIsModuleExports);
      }

      if (id === DYNAMIC_MODULES_ID) {
        return getDynamicModuleRegistry(
          isDynamicRequireModulesEnabled,
          dynamicRequireModules,
          commonDir,
          ignoreDynamicRequires
        );
      }

      if (isWrappedId(id, PROXY_SUFFIX)) {
        const actualId = unwrapId(id, PROXY_SUFFIX);
        return getStaticRequireProxy(
          actualId,
          getRequireReturnsDefault(actualId),
          esModulesWithDefaultExport,
          esModulesWithNamedExports,
          this.load
        );
      }

      return null;
    },

    transform(code, id) {
      const extName = extname(id);
      if (extName !== '.cjs' && (!filter(id) || !extensions.includes(extName))) {
        return null;
      }

      try {
        return transformAndCheckExports.call(this, code, id);
      } catch (err) {
        return this.error(err, err.loc);
      }
    }
  };
}

export { commonjs as default };
//# sourceMappingURL=index.es.js.map