@babel/traverse/lib/index.js

The Babel Traverse module maintains the overall tree state, and is responsible for replacing, removing, and adding nodes

import { createDebug } from 'obug';
import { codeFrameColumns } from '@babel/code-frame';
import * as _t from '@babel/types';
import { parse } from '@babel/parser';
import globalsBuiltinLower from '@babel/helper-globals/data/builtin-lower.json' with { type: 'json' };
import globalsBuiltinUpper from '@babel/helper-globals/data/builtin-upper.json' with { type: 'json' };
import generator from '@babel/generator';
import template from '@babel/template';

const ReferencedIdentifier = ["Identifier", "JSXIdentifier"];
const ReferencedMemberExpression = ["MemberExpression"];
const BindingIdentifier = ["Identifier"];
const Statement = ["Statement"];
const Expression = ["Expression"];
const Scope$1 = ["Scopable", "Pattern"];
const Referenced = null;
const BlockScoped = ["FunctionDeclaration", "ClassDeclaration", "VariableDeclaration"];
const Var = ["VariableDeclaration"];
const User = null;
const Generated = null;
const Pure = null;
const Flow = ["Flow", "ImportDeclaration", "ExportDeclaration", "ImportSpecifier"];
const RestProperty = ["RestElement"];
const SpreadProperty = ["RestElement"];
const ExistentialTypeParam = ["ExistsTypeAnnotation"];
const NumericLiteralTypeAnnotation = ["NumberLiteralTypeAnnotation"];
const ForAwaitStatement = ["ForOfStatement"];

const virtualTypes = /*#__PURE__*/Object.defineProperty({
  __proto__: null,
  BindingIdentifier,
  BlockScoped,
  ExistentialTypeParam,
  Expression,
  Flow,
  ForAwaitStatement,
  Generated,
  NumericLiteralTypeAnnotation,
  Pure,
  Referenced,
  ReferencedIdentifier,
  ReferencedMemberExpression,
  RestProperty,
  Scope: Scope$1,
  SpreadProperty,
  Statement,
  User,
  Var
}, Symbol.toStringTag, { value: 'Module' });

class TraversalContext {
  constructor(opts, state) {
    this.state = state;
    this.opts = opts;
  }
  queue = null;
  priorityQueue = null;
  maybeQueue(path, notPriority) {
    if (this.queue) {
      if (notPriority) {
        this.queue.push(path);
      } else {
        this.priorityQueue.push(path);
      }
    }
  }
}

const {
  VISITOR_KEYS: VISITOR_KEYS$4
} = _t;
function _visitPaths(ctx, paths) {
  ctx.queue = paths;
  ctx.priorityQueue = [];
  const visited = new Set();
  let stop = false;
  let visitIndex = 0;
  for (; visitIndex < paths.length;) {
    const path = paths[visitIndex];
    visitIndex++;
    resync.call(path);
    if (path.contexts.length === 0 || path.contexts[path.contexts.length - 1] !== ctx) {
      pushContext.call(path, ctx);
    }
    if (path.key === null) continue;
    const {
      node
    } = path;
    if (visited.has(node)) continue;
    if (node) visited.add(node);
    if (_visit(ctx, path)) {
      stop = true;
      break;
    }
    if (ctx.priorityQueue.length) {
      stop = _visitPaths(ctx, ctx.priorityQueue);
      ctx.priorityQueue = [];
      ctx.queue = paths;
      if (stop) break;
    }
  }
  for (let i = 0; i < visitIndex; i++) {
    popContext.call(paths[i]);
  }
  ctx.queue = null;
  return stop;
}
function _visit(ctx, path) {
  const node = path.node;
  if (!node) {
    return false;
  }
  const opts = ctx.opts;
  const denylist = opts.denylist;
  if (denylist?.includes(node.type)) {
    return false;
  }
  if (opts.shouldSkip?.(path)) {
    return false;
  }
  if (path.shouldSkip) return path.shouldStop;
  if (_call.call(path, opts.enter)) return path.shouldStop;
  if (path.node) {
    if (_call.call(path, opts[node.type]?.enter)) return path.shouldStop;
  }
  path.shouldStop = traverseNode(path.node, opts, path.scope, ctx.state, path, path.skipKeys);
  if (path.node) {
    if (_call.call(path, opts.exit)) return true;
  }
  if (path.node) {
    _call.call(path, opts[node.type]?.exit);
  }
  return path.shouldStop;
}
function traverseNode(node, opts, scope, state, path, skipKeys, visitSelf) {
  const keys = VISITOR_KEYS$4[node.type];
  if (!keys?.length) return false;
  const ctx = new TraversalContext(opts, state);
  if (visitSelf) {
    if (skipKeys?.[path.parentKey]) return false;
    return _visitPaths(ctx, [path]);
  }
  const hub = path == null ? node.type === "Program" || node.type === "File" ? new Hub() : undefined : path.hub;
  for (const key of keys) {
    if (skipKeys?.[key]) continue;
    const prop = node[key];
    if (!prop) continue;
    if (Array.isArray(prop)) {
      if (!prop.length) continue;
      const paths = [];
      for (let i = 0; i < prop.length; i++) {
        const childPath = NodePath_Final.get({
          parentPath: path,
          parent: node,
          container: prop,
          key: i,
          listKey: key,
          hub
        });
        paths.push(childPath);
      }
      if (_visitPaths(ctx, paths)) return true;
    } else {
      if (_visitPaths(ctx, [NodePath_Final.get({
        parentPath: path,
        parent: node,
        container: node,
        key,
        listKey: null,
        hub
      })])) {
        return true;
      }
    }
  }
  return false;
}

const {
  isBinding,
  isBlockScoped: nodeIsBlockScoped,
  isExportDeclaration: isExportDeclaration$1,
  isExpression: nodeIsExpression,
  isFlow: nodeIsFlow,
  isForStatement,
  isForXStatement,
  isIdentifier: isIdentifier$5,
  isImportDeclaration: isImportDeclaration$1,
  isImportSpecifier,
  isJSXIdentifier,
  isJSXMemberExpression,
  isMemberExpression: isMemberExpression$1,
  isRestElement: nodeIsRestElement,
  isReferenced: nodeIsReferenced,
  isScope: nodeIsScope,
  isStatement: nodeIsStatement,
  isVar: nodeIsVar,
  isVariableDeclaration: isVariableDeclaration$2,
  react,
  isForOfStatement
} = _t;
const {
  isCompatTag
} = react;
function isReferencedIdentifier(opts) {
  const {
    node,
    parent
  } = this;
  if (isIdentifier$5(node, opts)) {
    return nodeIsReferenced(node, parent, this.parentPath.parent);
  } else if (isJSXIdentifier(node, opts)) {
    if (!isJSXMemberExpression(parent) && isCompatTag(node.name)) return false;
    return nodeIsReferenced(node, parent, this.parentPath.parent);
  } else {
    return false;
  }
}
function isReferencedMemberExpression() {
  const {
    node,
    parent
  } = this;
  return isMemberExpression$1(node) && nodeIsReferenced(node, parent);
}
function isBindingIdentifier() {
  const {
    node,
    parent
  } = this;
  const grandparent = this.parentPath.parent;
  return isIdentifier$5(node) && isBinding(node, parent, grandparent);
}
function isStatement$1() {
  const {
    node,
    parent
  } = this;
  if (nodeIsStatement(node)) {
    if (isVariableDeclaration$2(node)) {
      if (isForXStatement(parent, {
        left: node
      })) return false;
      if (isForStatement(parent, {
        init: node
      })) return false;
    }
    return true;
  } else {
    return false;
  }
}
function isExpression$3() {
  if (this.isIdentifier()) {
    return this.isReferencedIdentifier();
  } else {
    return nodeIsExpression(this.node);
  }
}
function isScope() {
  return nodeIsScope(this.node, this.parent);
}
function isReferenced() {
  return nodeIsReferenced(this.node, this.parent);
}
function isBlockScoped() {
  return nodeIsBlockScoped(this.node);
}
function isVar() {
  return nodeIsVar(this.node);
}
function isUser() {
  return !!this.node?.loc;
}
function isGenerated() {
  return !this.isUser();
}
function isPure(constantsOnly) {
  return this.scope.isPure(this.node, constantsOnly);
}
function isFlow() {
  const {
    node
  } = this;
  if (nodeIsFlow(node)) {
    return true;
  } else if (isImportDeclaration$1(node)) {
    return node.importKind === "type" || node.importKind === "typeof";
  } else if (isExportDeclaration$1(node)) {
    return node.exportKind === "type";
  } else if (isImportSpecifier(node)) {
    return node.importKind === "type" || node.importKind === "typeof";
  } else {
    return false;
  }
}
function isRestProperty() {
  return nodeIsRestElement(this.node) && this.parentPath?.isObjectPattern();
}
function isSpreadProperty() {
  return nodeIsRestElement(this.node) && this.parentPath?.isObjectExpression();
}
function isForAwaitStatement() {
  return isForOfStatement(this.node, {
    await: true
  });
}

const NodePath_virtual_types_validator = /*#__PURE__*/Object.defineProperty({
  __proto__: null,
  isBindingIdentifier,
  isBlockScoped,
  isExpression: isExpression$3,
  isFlow,
  isForAwaitStatement,
  isGenerated,
  isPure,
  isReferenced,
  isReferencedIdentifier,
  isReferencedMemberExpression,
  isRestProperty,
  isScope,
  isSpreadProperty,
  isStatement: isStatement$1,
  isUser,
  isVar
}, Symbol.toStringTag, { value: 'Module' });

const {
  DEPRECATED_KEYS,
  DEPRECATED_ALIASES,
  FLIPPED_ALIAS_KEYS,
  TYPES,
  __internal__deprecationWarning: deprecationWarning
} = _t;
function isVirtualType(type) {
  return type in virtualTypes;
}
function isExplodedVisitor(visitor) {
  return visitor?._exploded;
}
function explode$1(visitor) {
  if (isExplodedVisitor(visitor)) return visitor;
  visitor._exploded = true;
  if (Object.hasOwn(visitor, "blacklist")) {
    if (!Object.hasOwn(visitor, "denylist")) {
      throw new Error("The 'blacklist' visitor option has been renamed to 'denylist'. " + "Please update your configuration.");
    }
    delete visitor.blacklist;
  }
  for (const nodeType of Object.keys(visitor)) {
    if (shouldIgnoreKey(nodeType)) continue;
    const parts = nodeType.split("|");
    if (parts.length === 1) continue;
    const fns = visitor[nodeType];
    delete visitor[nodeType];
    for (const part of parts) {
      visitor[part] = fns;
    }
  }
  verify$1(visitor);
  delete visitor.__esModule;
  ensureEntranceObjects(visitor);
  ensureCallbackArrays(visitor);
  const visitorBase = visitor;
  for (const nodeType of Object.keys(visitor)) {
    if (shouldIgnoreKey(nodeType)) continue;
    if (!isVirtualType(nodeType)) continue;
    const fns = visitorBase[nodeType];
    for (const type of Object.keys(fns)) {
      fns[type] = wrapCheck(nodeType, fns[type]);
    }
    delete visitorBase[nodeType];
    const types = virtualTypes[nodeType];
    if (types !== null) {
      for (const type of types) {
        visitorBase[type] ??= {};
        mergePair(visitorBase[type], fns);
      }
    } else {
      mergePair(visitor, fns);
    }
  }
  for (const nodeType of Object.keys(visitor)) {
    if (shouldIgnoreKey(nodeType)) continue;
    let aliases = FLIPPED_ALIAS_KEYS[nodeType];
    if (nodeType in DEPRECATED_KEYS) {
      const deprecatedKey = DEPRECATED_KEYS[nodeType];
      deprecationWarning(nodeType, deprecatedKey, "Visitor ");
      aliases = [deprecatedKey];
    } else if (nodeType in DEPRECATED_ALIASES) {
      const deprecatedAlias = DEPRECATED_ALIASES[nodeType];
      deprecationWarning(nodeType, deprecatedAlias, "Visitor ");
      aliases = FLIPPED_ALIAS_KEYS[deprecatedAlias];
    }
    if (!aliases) continue;
    const fns = visitor[nodeType];
    delete visitor[nodeType];
    for (const alias of aliases) {
      const existing = visitorBase[alias];
      if (existing) {
        mergePair(existing, fns);
      } else {
        visitorBase[alias] = {
          ...fns
        };
      }
    }
  }
  for (const nodeType of Object.keys(visitor)) {
    if (shouldIgnoreKey(nodeType)) continue;
    ensureCallbackArrays(visitor[nodeType]);
  }
  return visitor;
}
function verify$1(visitor) {
  if (visitor._verified) return;
  if (typeof visitor === "function") {
    throw new Error("You passed `traverse()` a function when it expected a visitor object, " + "are you sure you didn't mean `{ enter: Function }`?");
  }
  for (const nodeType of Object.keys(visitor)) {
    if (nodeType === "enter" || nodeType === "exit") {
      validateVisitorMethods(nodeType, visitor[nodeType]);
    }
    if (shouldIgnoreKey(nodeType)) continue;
    if (!TYPES.includes(nodeType)) {
      throw new Error(`You gave us a visitor for the node type ${nodeType} but it's not a valid type in @babel/traverse ${"8.0.0"}`);
    }
    const visitors = visitor[nodeType];
    if (typeof visitors === "object") {
      for (const visitorKey of Object.keys(visitors)) {
        if (visitorKey === "enter" || visitorKey === "exit") {
          validateVisitorMethods(`${nodeType}.${visitorKey}`, visitors[visitorKey]);
        } else {
          throw new Error("You passed `traverse()` a visitor object with the property " + `${nodeType} that has the invalid property ${visitorKey}`);
        }
      }
    }
  }
  visitor._verified = true;
}
function validateVisitorMethods(path, val) {
  const fns = [].concat(val);
  for (const fn of fns) {
    if (typeof fn !== "function") {
      throw new TypeError(`Non-function found defined in ${path} with type ${typeof fn}`);
    }
  }
}
function merge(visitors, states = [], wrapper) {
  const mergedVisitor = {
    _verified: true,
    _exploded: true
  };
  for (let i = 0; i < visitors.length; i++) {
    const visitor = explode$1(visitors[i]);
    const state = states[i];
    let topVisitor = visitor;
    if (state || wrapper) {
      topVisitor = wrapWithStateOrWrapper(topVisitor, state, wrapper);
    }
    mergePair(mergedVisitor, topVisitor);
    for (const key of Object.keys(visitor)) {
      if (shouldIgnoreKey(key)) continue;
      let typeVisitor = visitor[key];
      if (state || wrapper) {
        typeVisitor = wrapWithStateOrWrapper(typeVisitor, state, wrapper);
      }
      const nodeVisitor = mergedVisitor[key] ||= {};
      mergePair(nodeVisitor, typeVisitor);
    }
  }
  return mergedVisitor;
}
function wrapWithStateOrWrapper(oldVisitor, state, wrapper) {
  const newVisitor = {};
  for (const phase of ["enter", "exit"]) {
    let fns = oldVisitor[phase];
    if (!Array.isArray(fns)) continue;
    fns = fns.map(function (fn) {
      let newFn = fn;
      if (state) {
        newFn = function (path) {
          fn.call(state, path, state);
        };
      }
      if (wrapper) {
        newFn = wrapper(state?.key, phase, newFn);
      }
      if (newFn !== fn) {
        newFn.toString = () => fn.toString();
      }
      return newFn;
    });
    newVisitor[phase] = fns;
  }
  return newVisitor;
}
function ensureEntranceObjects(obj) {
  for (const key of Object.keys(obj)) {
    if (shouldIgnoreKey(key)) continue;
    const fns = obj[key];
    if (typeof fns === "function") {
      obj[key] = {
        enter: fns
      };
    }
  }
}
function ensureCallbackArrays(obj) {
  if (obj.enter && !Array.isArray(obj.enter)) obj.enter = [obj.enter];
  if (obj.exit && !Array.isArray(obj.exit)) obj.exit = [obj.exit];
}
function wrapCheck(nodeType, fn) {
  const fnKey = `is${nodeType}`;
  const validator = NodePath_virtual_types_validator[fnKey];
  const newFn = function (path) {
    if (validator.call(path)) {
      return fn.apply(this, arguments);
    }
  };
  newFn.toString = () => fn.toString();
  return newFn;
}
function shouldIgnoreKey(key) {
  if (key.startsWith("_")) return true;
  if (key === "enter" || key === "exit" || key === "shouldSkip") return true;
  if (key === "denylist" || key === "noScope" || key === "skipKeys") {
    return true;
  }
  if (key === "blacklist") {
    throw new Error("The 'blacklist' visitor option has been renamed to 'denylist'. " + "Please update your configuration.");
  }
  return false;
}
function mergePair(dest, src) {
  for (const phase of ["enter", "exit"]) {
    if (!src[phase]) continue;
    dest[phase] = [].concat(dest[phase] || [], src[phase]);
  }
}
const _environmentVisitor = {
  FunctionParent(path) {
    if (path.isArrowFunctionExpression()) return;
    path.skip();
    if (path.isMethod()) {
      path.requeueComputedKeyAndDecorators();
    }
  },
  Property(path) {
    if (path.isObjectProperty()) return;
    path.skip();
    path.requeueComputedKeyAndDecorators();
  }
};
function environmentVisitor(visitor) {
  return merge([_environmentVisitor, visitor]);
}

const visitors = /*#__PURE__*/Object.defineProperty({
  __proto__: null,
  environmentVisitor,
  explode: explode$1,
  isExplodedVisitor,
  merge,
  verify: verify$1
}, Symbol.toStringTag, { value: 'Module' });

const {
  getAssignmentIdentifiers: getAssignmentIdentifiers$1
} = _t;
let renameVisitor;
const getRenameVisitor = () => renameVisitor ??= explode$1({
  ReferencedIdentifier({
    node
  }, state) {
    if (node.name === state.oldName) {
      node.name = state.newName;
    }
  },
  Scope(path, state) {
    if (!path.scope.bindingIdentifierEquals(state.oldName, state.binding.identifier)) {
      path.skip();
      if (path.isMethod()) {
        path.requeueComputedKeyAndDecorators();
      }
      if (path.isSwitchStatement()) {
        path.context.maybeQueue(path.get("discriminant"));
      }
    }
  },
  ObjectProperty({
    node,
    scope
  }, state) {
    const {
      name
    } = node.key;
    if (node.shorthand && (name === state.oldName || name === state.newName) && scope.getBindingIdentifier(name) === state.binding.identifier) {
      node.shorthand = false;
    }
  },
  "AssignmentExpression|Declaration|VariableDeclarator"(path, state) {
    if (path.isVariableDeclaration()) return;
    const ids = path.isAssignmentExpression() ? getAssignmentIdentifiers$1(path.node) : path.getOuterBindingIdentifiers();
    for (const name in ids) {
      if (name === state.oldName) ids[name].name = state.newName;
    }
  }
});
class Renamer {
  constructor(binding, oldName, newName) {
    this.newName = newName;
    this.oldName = oldName;
    this.binding = binding;
  }
  maybeConvertFromExportDeclaration(parentDeclar) {
    const maybeExportDeclar = parentDeclar.parentPath;
    if (!maybeExportDeclar.isExportDeclaration()) {
      return;
    }
    if (maybeExportDeclar.isExportDefaultDeclaration()) {
      const {
        declaration
      } = maybeExportDeclar.node;
      if (_t.isDeclaration(declaration) && !declaration.id) {
        return;
      }
    }
    if (maybeExportDeclar.isExportAllDeclaration()) {
      return;
    }
    maybeExportDeclar.splitExportDeclaration();
  }
  maybeConvertFromClassFunctionDeclaration(path) {
    return path;
  }
  maybeConvertFromClassFunctionExpression(path) {
    return path;
  }
  rename() {
    const {
      binding,
      oldName,
      newName
    } = this;
    const {
      scope,
      path
    } = binding;
    const parentDeclar = path.find(path => path.isDeclaration() || path.isFunctionExpression() || path.isClassExpression());
    if (parentDeclar) {
      const bindingIds = parentDeclar.getOuterBindingIdentifiers();
      if (bindingIds[oldName] === binding.identifier) {
        this.maybeConvertFromExportDeclaration(parentDeclar);
      }
    }
    const blockToTraverse = scope.block;
    const skipKeys = {
      discriminant: true
    };
    if (_t.isMethod(blockToTraverse)) {
      if (blockToTraverse.computed) {
        skipKeys.key = true;
      }
      if (!_t.isObjectMethod(blockToTraverse)) {
        skipKeys.decorators = true;
      }
    }
    traverseNode(blockToTraverse, getRenameVisitor(), scope, this, scope.path, skipKeys);
    scope.removeOwnBinding(oldName);
    scope.bindings[newName] = binding;
    this.binding.identifier.name = newName;
    if (parentDeclar) {
      this.maybeConvertFromClassFunctionDeclaration(path);
      this.maybeConvertFromClassFunctionExpression(path);
    }
  }
}

const {
  VISITOR_KEYS: VISITOR_KEYS$3
} = _t;
function traverseForScope(path, visitors, state) {
  const exploded = explode$1(visitors);
  if (exploded.enter || exploded.exit) {
    throw new Error("Should not be used with enter/exit visitors.");
  }
  _traverse(path.parentPath, path.parent, path.node, path.container, path.key, path.listKey, path.hub, path);
  function _traverse(parentPath, parent, node, container, key, listKey, hub, inPath) {
    if (!node) {
      return;
    }
    const path = inPath || NodePath_Final.get({
      hub,
      parentPath,
      parent,
      container,
      listKey,
      key
    });
    _forceSetScope.call(path);
    const visitor = exploded[node.type];
    if (visitor?.enter) {
      for (const visit of visitor.enter) {
        visit.call(state, path, state);
      }
    }
    if (path.shouldSkip) {
      return;
    }
    const keys = VISITOR_KEYS$3[node.type];
    if (!keys?.length) {
      return;
    }
    for (const key of keys) {
      const prop = node[key];
      if (!prop) continue;
      if (Array.isArray(prop)) {
        for (let i = 0; i < prop.length; i++) {
          const value = prop[i];
          _traverse(path, node, value, prop, i, key);
        }
      } else {
        _traverse(path, node, prop, node, key, null);
      }
    }
    if (visitor?.exit) {
      for (const visit of visitor.exit) {
        visit.call(state, path, state);
      }
    }
  }
}

class Binding {
  identifier;
  scope;
  path;
  kind;
  constructor({
    identifier,
    scope,
    path,
    kind
  }) {
    this.identifier = identifier;
    this.scope = scope;
    this.path = path;
    this.kind = kind;
    if ((kind === "var" || kind === "hoisted") && isInitInLoop(path)) {
      this.reassign(path);
    }
    this.clearValue();
  }
  constantViolations = [];
  constant = true;
  referencePaths = [];
  referenced = false;
  references = 0;
  deoptValue() {
    this.clearValue();
    this.hasDeoptedValue = true;
  }
  setValue(value) {
    if (this.hasDeoptedValue) return;
    this.hasValue = true;
    this.value = value;
  }
  clearValue() {
    this.hasDeoptedValue = false;
    this.hasValue = false;
    this.value = null;
  }
  reassign(path) {
    this.constant = false;
    if (this.constantViolations.includes(path)) {
      return;
    }
    this.constantViolations.push(path);
  }
  reference(path) {
    if (this.referencePaths.includes(path)) {
      return;
    }
    this.referenced = true;
    this.references++;
    this.referencePaths.push(path);
  }
  dereference() {
    this.references--;
    this.referenced = !!this.references;
  }
}
function isInitInLoop(path) {
  const isFunctionDeclarationOrHasInit = !path.isVariableDeclarator() || path.node.init;
  for (let {
    parentPath,
    key
  } = path; parentPath; {
    parentPath,
    key
  } = parentPath) {
    if (parentPath.isFunctionParent()) return false;
    if (key === "left" && parentPath.isForXStatement() || isFunctionDeclarationOrHasInit && key === "body" && parentPath.isLoop()) {
      return true;
    }
  }
  return false;
}

let pathsCache = new WeakMap();
let scope = new WeakMap();
function clear() {
  clearPath();
  clearScope();
}
function clearPath() {
  pathsCache = new WeakMap();
}
function clearScope() {
  scope = new WeakMap();
}
function getCachedPaths(path) {
  const {
    parent,
    parentPath
  } = path;
  return parentPath ? parentPath._store : pathsCache.get(parent);
}
function getOrCreateCachedPaths(node, parentPath) {
  if (parentPath) {
    return parentPath._store ||= new Map();
  }
  let paths = pathsCache.get(node);
  if (!paths) pathsCache.set(node, paths = new Map());
  return paths;
}

const cache = /*#__PURE__*/Object.defineProperty({
  __proto__: null,
  clear,
  clearPath,
  clearScope,
  getCachedPaths,
  getOrCreateCachedPaths,
  get path () { return pathsCache; },
  get scope () { return scope; }
}, Symbol.toStringTag, { value: 'Module' });

const {
  assignmentExpression: assignmentExpression$3,
  cloneNode: cloneNode$3,
  getBindingIdentifiers: getBindingIdentifiers$2,
  identifier: identifier$3,
  isArrayExpression,
  isBinary,
  isCallExpression: isCallExpression$1,
  isClass,
  isClassBody,
  isClassDeclaration,
  isExportAllDeclaration,
  isExportDefaultDeclaration,
  isExportNamedDeclaration: isExportNamedDeclaration$1,
  isFunctionDeclaration,
  isIdentifier: isIdentifier$4,
  isImportDeclaration,
  isLiteral: isLiteral$1,
  isMemberExpression,
  isMethod,
  isModuleSpecifier,
  isNullLiteral,
  isObjectExpression,
  isProperty,
  isPureish,
  isRegExpLiteral,
  isSuper: isSuper$1,
  isTaggedTemplateExpression,
  isTemplateLiteral,
  isThisExpression,
  isUnaryExpression,
  isVariableDeclaration: isVariableDeclaration$1,
  expressionStatement: expressionStatement$3,
  matchesPattern: matchesPattern$1,
  toIdentifier,
  variableDeclaration: variableDeclaration$1,
  variableDeclarator: variableDeclarator$1,
  isObjectProperty,
  isTopicReference,
  isMetaProperty,
  isPrivateName,
  isExportDeclaration,
  sequenceExpression: sequenceExpression$2
} = _t;
function gatherNodeParts(node, parts) {
  switch (node?.type) {
    default:
      if (isImportDeclaration(node) || isExportDeclaration(node)) {
        if ((isExportAllDeclaration(node) || isExportNamedDeclaration$1(node) || isImportDeclaration(node)) && node.source) {
          gatherNodeParts(node.source, parts);
        } else if ((isExportNamedDeclaration$1(node) || isImportDeclaration(node)) && node.specifiers?.length) {
          for (const e of node.specifiers) gatherNodeParts(e, parts);
        } else if ((isExportDefaultDeclaration(node) || isExportNamedDeclaration$1(node)) && node.declaration) {
          gatherNodeParts(node.declaration, parts);
        }
      } else if (isModuleSpecifier(node)) {
        gatherNodeParts(node.local, parts);
      } else if (isLiteral$1(node) && !isNullLiteral(node) && !isRegExpLiteral(node) && !isTemplateLiteral(node)) {
        parts.push(node.value);
      }
      break;
    case "MemberExpression":
    case "OptionalMemberExpression":
    case "JSXMemberExpression":
      gatherNodeParts(node.object, parts);
      gatherNodeParts(node.property, parts);
      break;
    case "Identifier":
    case "JSXIdentifier":
      parts.push(node.name);
      break;
    case "CallExpression":
    case "OptionalCallExpression":
    case "NewExpression":
      gatherNodeParts(node.callee, parts);
      break;
    case "ObjectExpression":
    case "ObjectPattern":
      for (const e of node.properties) {
        gatherNodeParts(e, parts);
      }
      break;
    case "SpreadElement":
    case "RestElement":
      gatherNodeParts(node.argument, parts);
      break;
    case "ObjectProperty":
    case "ObjectMethod":
    case "ClassProperty":
    case "ClassMethod":
    case "ClassPrivateProperty":
    case "ClassPrivateMethod":
      gatherNodeParts(node.key, parts);
      break;
    case "ThisExpression":
      parts.push("this");
      break;
    case "Super":
      parts.push("super");
      break;
    case "Import":
    case "ImportExpression":
      parts.push("import");
      break;
    case "DoExpression":
      parts.push("do");
      break;
    case "YieldExpression":
      parts.push("yield");
      gatherNodeParts(node.argument, parts);
      break;
    case "AwaitExpression":
      parts.push("await");
      gatherNodeParts(node.argument, parts);
      break;
    case "AssignmentExpression":
      gatherNodeParts(node.left, parts);
      break;
    case "VariableDeclarator":
      gatherNodeParts(node.id, parts);
      break;
    case "FunctionExpression":
    case "FunctionDeclaration":
    case "ClassExpression":
    case "ClassDeclaration":
      gatherNodeParts(node.id, parts);
      break;
    case "PrivateName":
      gatherNodeParts(node.id, parts);
      break;
    case "ParenthesizedExpression":
      gatherNodeParts(node.expression, parts);
      break;
    case "UnaryExpression":
    case "UpdateExpression":
      gatherNodeParts(node.argument, parts);
      break;
    case "MetaProperty":
      gatherNodeParts(node.meta, parts);
      gatherNodeParts(node.property, parts);
      break;
    case "JSXElement":
      gatherNodeParts(node.openingElement, parts);
      break;
    case "JSXOpeningElement":
      gatherNodeParts(node.name, parts);
      break;
    case "JSXFragment":
      gatherNodeParts(node.openingFragment, parts);
      break;
    case "JSXOpeningFragment":
      parts.push("Fragment");
      break;
    case "JSXNamespacedName":
      gatherNodeParts(node.namespace, parts);
      gatherNodeParts(node.name, parts);
      break;
  }
}
function resetScope(scope) {
  if (scope.path.type === "Program") {
    scope.referencesSet = new Set();
    scope.uidsSet = new Set();
  }
  scope.bindings = Object.create(null);
  scope.globals = Object.create(null);
}
function isAnonymousFunctionExpression(path) {
  return path.isFunctionExpression() && !path.node.id || path.isArrowFunctionExpression();
}
const collectorVisitor = {
  ForStatement(path) {
    const declar = path.get("init");
    if (declar.isVar()) {
      const {
        scope
      } = path;
      const parentScope = scope.getFunctionParent() || scope.getProgramParent();
      parentScope.registerBinding("var", declar);
    }
  },
  Declaration(path) {
    if (path.isBlockScoped()) return;
    if (path.isImportDeclaration()) return;
    if (path.isExportDeclaration()) return;
    const parent = path.scope.getFunctionParent() || path.scope.getProgramParent();
    parent.registerDeclaration(path);
  },
  ImportDeclaration(path) {
    const parent = path.scope.getBlockParent();
    parent.registerDeclaration(path);
  },
  TSImportEqualsDeclaration(path) {
    const parent = path.scope.getBlockParent();
    parent.registerDeclaration(path);
  },
  ReferencedIdentifier(path, state) {
    if (_t.isTSQualifiedName(path.parent) && path.parent.right === path.node) {
      return;
    }
    if (path.parentPath.isTSImportEqualsDeclaration()) return;
    state.references.push(path);
  },
  ForXStatement(path, state) {
    const left = path.get("left");
    if (left.isPattern() || left.isIdentifier()) {
      state.constantViolations.push(path);
    } else if (left.isVar()) {
      const {
        scope
      } = path;
      const parentScope = scope.getFunctionParent() || scope.getProgramParent();
      parentScope.registerBinding("var", left);
    }
  },
  ExportDeclaration: {
    exit(path) {
      const {
        node,
        scope
      } = path;
      if (isExportAllDeclaration(node)) return;
      const declar = node.declaration;
      if (isClassDeclaration(declar) || isFunctionDeclaration(declar)) {
        const id = declar.id;
        if (!id) return;
        const binding = scope.getBinding(id.name);
        binding?.reference(path);
      } else if (isVariableDeclaration$1(declar)) {
        for (const decl of declar.declarations) {
          for (const name of Object.keys(getBindingIdentifiers$2(decl))) {
            const binding = scope.getBinding(name);
            binding?.reference(path);
          }
        }
      }
    }
  },
  LabeledStatement(path) {
    path.scope.getBlockParent().registerDeclaration(path);
  },
  AssignmentExpression(path, state) {
    state.assignments.push(path);
  },
  UpdateExpression(path, state) {
    state.constantViolations.push(path);
  },
  UnaryExpression(path, state) {
    if (path.node.operator === "delete") {
      state.constantViolations.push(path);
    }
  },
  BlockScoped(path) {
    let scope = path.scope;
    if (scope.path === path) scope = scope.parent;
    const parent = scope.getBlockParent();
    parent.registerDeclaration(path);
    if (path.isClassDeclaration() && path.node.id) {
      const id = path.node.id;
      const name = id.name;
      path.scope.bindings[name] = path.scope.parent.getBinding(name);
    }
  },
  CatchClause(path) {
    path.scope.registerBinding("let", path);
  },
  Function(path) {
    const params = path.get("params");
    for (const param of params) {
      path.scope.registerBinding("param", param);
    }
    if (path.isFunctionExpression() && path.node.id) {
      path.scope.registerBinding("local", path.get("id"), path);
    }
  },
  ClassExpression(path) {
    if (path.node.id) {
      path.scope.registerBinding("local", path.get("id"), path);
    }
  },
  TSTypeAnnotation(path) {
    path.skip();
  }
};
let scopeVisitor;
let uid = 0;
class Scope {
  uid;
  path;
  block;
  inited;
  labels;
  bindings;
  referencesSet;
  globals;
  uidsSet;
  data;
  crawling;
  constructor(path) {
    const {
      node
    } = path;
    const cached = scope.get(node);
    if (cached?.path === path) {
      return cached;
    }
    scope.set(node, this);
    this.uid = uid++;
    this.block = node;
    this.path = path;
    this.labels = new Map();
    this.inited = false;
  }
  static globals = [...globalsBuiltinLower, ...globalsBuiltinUpper];
  static contextVariables = ["arguments", "undefined", "Infinity", "NaN"];
  get parent() {
    let parent,
      path = this.path;
    do {
      const shouldSkip = path.key === "key" || path.listKey === "decorators";
      path = path.parentPath;
      if (shouldSkip && path.isMethod()) path = path.parentPath;
      if (path?.isScope()) parent = path;
    } while (path && !parent);
    return parent?.scope;
  }
  get references() {
    throw new Error("Scope#references is not available in Babel 8. Use Scope#referencesSet instead.");
  }
  get uids() {
    throw new Error("Scope#uids is not available in Babel 8. Use Scope#uidsSet instead.");
  }
  generateDeclaredUidIdentifier(name) {
    const id = this.generateUidIdentifier(name);
    this.push({
      id
    });
    return cloneNode$3(id);
  }
  generateUidIdentifier(name) {
    return identifier$3(this.generateUid(name));
  }
  generateUid(name = "temp") {
    name = toIdentifier(name).replace(/^_+/, "").replace(/\d+$/g, "");
    let uid;
    let i = 0;
    do {
      uid = `_${name}`;
      if (i >= 11) uid += i - 1;else if (i >= 9) uid += i - 9;else if (i >= 1) uid += i + 1;
      i++;
    } while (this.hasLabel(uid) || this.hasBinding(uid) || this.hasGlobal(uid) || this.hasReference(uid));
    const program = this.getProgramParent();
    program.referencesSet.add(uid);
    program.uidsSet.add(uid);
    return uid;
  }
  generateUidBasedOnNode(node, defaultName) {
    const parts = [];
    gatherNodeParts(node, parts);
    let id = parts.join("$");
    id = id.replace(/^_/, "") || defaultName || "ref";
    return this.generateUid(id.slice(0, 20));
  }
  generateUidIdentifierBasedOnNode(node, defaultName) {
    return identifier$3(this.generateUidBasedOnNode(node, defaultName));
  }
  isStatic(node) {
    if (isThisExpression(node) || isSuper$1(node) || isTopicReference(node)) {
      return true;
    }
    if (isIdentifier$4(node)) {
      const binding = this.getBinding(node.name);
      if (binding) {
        return binding.constant;
      } else {
        return this.hasBinding(node.name);
      }
    }
    return false;
  }
  maybeGenerateMemoised(node, dontPush) {
    if (this.isStatic(node)) {
      return null;
    } else {
      const id = this.generateUidIdentifierBasedOnNode(node);
      if (!dontPush) {
        this.push({
          id
        });
        return cloneNode$3(id);
      }
      return id;
    }
  }
  checkBlockScopedCollisions(local, kind, name, id) {
    if (kind === "param") return;
    if (local.kind === "local") return;
    const duplicate = kind === "let" || local.kind === "let" || local.kind === "const" || local.kind === "module" || local.kind === "param" && kind === "const";
    if (duplicate) {
      throw this.path.hub.buildError(id, `Duplicate declaration "${name}"`, TypeError);
    }
  }
  rename(oldName, newName) {
    const binding = this.getBinding(oldName);
    if (binding) {
      newName ||= this.generateUidIdentifier(oldName).name;
      const renamer = new Renamer(binding, oldName, newName);
      renamer.rename();
    }
  }
  dump() {
    const sep = "-".repeat(60);
    console.log(sep);
    let scope = this;
    do {
      console.log("#", scope.block.type);
      for (const name of Object.keys(scope.bindings)) {
        const binding = scope.bindings[name];
        console.log(" -", name, {
          constant: binding.constant,
          references: binding.references,
          violations: binding.constantViolations.length,
          kind: binding.kind
        });
      }
    } while (scope = scope.parent);
    console.log(sep);
  }
  hasLabel(name) {
    return !!this.getLabel(name);
  }
  getLabel(name) {
    return this.labels.get(name);
  }
  registerLabel(path) {
    this.labels.set(path.node.label.name, path);
  }
  registerDeclaration(path) {
    if (path.isLabeledStatement()) {
      this.registerLabel(path);
    } else if (path.isFunctionDeclaration()) {
      this.registerBinding("hoisted", path.get("id"), path);
    } else if (path.isVariableDeclaration()) {
      const declarations = path.get("declarations");
      const {
        kind
      } = path.node;
      for (const declar of declarations) {
        this.registerBinding(kind === "using" || kind === "await using" ? "const" : kind, declar);
      }
    } else if (path.isClassDeclaration()) {
      if (path.node.declare) return;
      this.registerBinding("let", path);
    } else if (path.isImportDeclaration()) {
      const isTypeDeclaration = path.node.importKind === "type" || path.node.importKind === "typeof";
      const specifiers = path.get("specifiers");
      for (const specifier of specifiers) {
        const isTypeSpecifier = isTypeDeclaration || specifier.isImportSpecifier() && (specifier.node.importKind === "type" || specifier.node.importKind === "typeof");
        this.registerBinding(isTypeSpecifier ? "unknown" : "module", specifier);
      }
    } else if (path.isExportDeclaration()) {
      const declar = path.get("declaration");
      if (declar.isClassDeclaration() || declar.isFunctionDeclaration() || declar.isVariableDeclaration()) {
        this.registerDeclaration(declar);
      }
    } else {
      this.registerBinding("unknown", path);
    }
  }
  registerConstantViolation(path) {
    const ids = path.getAssignmentIdentifiers();
    for (const name of Object.keys(ids)) {
      this.getBinding(name)?.reassign(path);
    }
  }
  registerBinding(kind, path, bindingPath = path) {
    if (!kind) throw new ReferenceError("no `kind`");
    if (path.isVariableDeclaration()) {
      const declarators = path.get("declarations");
      for (const declar of declarators) {
        this.registerBinding(kind, declar);
      }
      return;
    }
    const parent = this.getProgramParent();
    const ids = path.getOuterBindingIdentifiers(true);
    for (const name of Object.keys(ids)) {
      parent.referencesSet.add(name);
      for (const id of ids[name]) {
        const local = this.getOwnBinding(name);
        if (local) {
          if (local.identifier === id) continue;
          this.checkBlockScopedCollisions(local, kind, name, id);
        }
        if (local) {
          local.reassign(bindingPath);
        } else {
          this.bindings[name] = new Binding({
            identifier: id,
            scope: this,
            path: bindingPath,
            kind: kind
          });
        }
      }
    }
  }
  addGlobal(node) {
    this.globals[node.name] = node;
  }
  hasUid(name) {
    return this.getProgramParent().uidsSet.has(name);
  }
  hasGlobal(name) {
    let scope = this;
    do {
      if (scope.globals[name]) return true;
    } while (scope = scope.parent);
    return false;
  }
  hasReference(name) {
    return this.getProgramParent().referencesSet.has(name);
  }
  isPure(node, constantsOnly) {
    if (isIdentifier$4(node)) {
      const binding = this.getBinding(node.name);
      if (!binding) return false;
      if (constantsOnly) return binding.constant;
      return true;
    } else if (isThisExpression(node) || isMetaProperty(node) || isTopicReference(node) || isPrivateName(node)) {
      return true;
    } else if (isClass(node)) {
      if (node.superClass && !this.isPure(node.superClass, constantsOnly)) {
        return false;
      }
      if (node.decorators?.length > 0) {
        return false;
      }
      return this.isPure(node.body, constantsOnly);
    } else if (isClassBody(node)) {
      for (const method of node.body) {
        if (!this.isPure(method, constantsOnly)) return false;
      }
      return true;
    } else if (isBinary(node)) {
      return this.isPure(node.left, constantsOnly) && this.isPure(node.right, constantsOnly);
    } else if (isArrayExpression(node)) {
      for (const elem of node.elements) {
        if (elem !== null && !this.isPure(elem, constantsOnly)) return false;
      }
      return true;
    } else if (isObjectExpression(node)) {
      for (const prop of node.properties) {
        if (!this.isPure(prop, constantsOnly)) return false;
      }
      return true;
    } else if (isMethod(node)) {
      if (node.computed && !this.isPure(node.key, constantsOnly)) return false;
      if (node.decorators?.length > 0) {
        return false;
      }
      return true;
    } else if (isProperty(node)) {
      if (node.computed && !this.isPure(node.key, constantsOnly)) return false;
      if (node.decorators?.length > 0) {
        return false;
      }
      if (isObjectProperty(node) || node.static) {
        if (node.value !== null && !this.isPure(node.value, constantsOnly)) {
          return false;
        }
      }
      return true;
    } else if (isUnaryExpression(node)) {
      return this.isPure(node.argument, constantsOnly);
    } else if (isTemplateLiteral(node)) {
      for (const expression of node.expressions) {
        if (!this.isPure(expression, constantsOnly)) return false;
      }
      return true;
    } else if (isTaggedTemplateExpression(node)) {
      return matchesPattern$1(node.tag, "String.raw") && !this.hasBinding("String", {
        noGlobals: true
      }) && this.isPure(node.quasi, constantsOnly);
    } else if (isMemberExpression(node)) {
      return !node.computed && isIdentifier$4(node.object) && node.object.name === "Symbol" && isIdentifier$4(node.property) && node.property.name !== "for" && !this.hasBinding("Symbol", {
        noGlobals: true
      });
    } else if (isCallExpression$1(node)) {
      return matchesPattern$1(node.callee, "Symbol.for") && !this.hasBinding("Symbol", {
        noGlobals: true
      }) && node.arguments.length === 1 && _t.isStringLiteral(node.arguments[0]);
    } else {
      return isPureish(node);
    }
  }
  setData(key, val) {
    return this.data[key] = val;
  }
  getData(key) {
    let scope = this;
    do {
      const data = scope.data[key];
      if (data != null) return data;
    } while (scope = scope.parent);
  }
  removeData(key) {
    let scope = this;
    do {
      const data = scope.data[key];
      if (data != null) scope.data[key] = null;
    } while (scope = scope.parent);
  }
  init() {
    if (!this.inited) {
      this.inited = true;
      this.crawl();
    }
  }
  crawl() {
    const path = this.path;
    resetScope(this);
    this.data = Object.create(null);
    let scope = this;
    do {
      if (scope.crawling) return;
      if (scope.path.isProgram()) {
        break;
      }
    } while (scope = scope.parent);
    const programParent = scope;
    const state = {
      references: [],
      constantViolations: [],
      assignments: []
    };
    this.crawling = true;
    scopeVisitor ||= traverse.visitors.merge([{
      Scope(path) {
        resetScope(path.scope);
      }
    }, collectorVisitor]);
    if (path.type !== "Program") {
      const typeVisitors = scopeVisitor[path.type];
      if (typeVisitors) {
        for (const visit of typeVisitors.enter) {
          visit.call(state, path, state);
        }
      }
    }
    traverseForScope(path, scopeVisitor, state);
    this.crawling = false;
    for (const path of state.assignments) {
      const ids = path.getAssignmentIdentifiers();
      for (const name of Object.keys(ids)) {
        if (path.scope.getBinding(name)) continue;
        programParent.addGlobal(ids[name]);
      }
      path.scope.registerConstantViolation(path);
    }
    for (const ref of state.references) {
      const binding = ref.scope.getBinding(ref.node.name);
      if (binding) {
        binding.reference(ref);
      } else {
        programParent.addGlobal(ref.node);
      }
    }
    for (const path of state.constantViolations) {
      path.scope.registerConstantViolation(path);
    }
  }
  push(opts) {
    let path = this.path;
    if (path.isPattern()) {
      path = this.getPatternParent().path;
    } else if (!path.isBlockStatement() && !path.isProgram()) {
      path = this.getBlockParent().path;
    }
    if (path.isSwitchStatement()) {
      path = (this.getFunctionParent() || this.getProgramParent()).path;
    }
    const {
      init,
      unique,
      kind = "var",
      id
    } = opts;
    if (!init && !unique && (kind === "var" || kind === "let") && isAnonymousFunctionExpression(path) && isCallExpression$1(path.parent, {
      callee: path.node
    }) && path.parent.arguments.length <= path.node.params.length && isIdentifier$4(id)) {
      path.pushContainer("params", id);
      path.scope.registerBinding("param", path.get("params")[path.node.params.length - 1]);
      return;
    }
    if (path.isLoop() || path.isCatchClause() || path.isFunction()) {
      path.ensureBlock();
      path = path.get("body");
    }
    const blockHoist = opts._blockHoist == null ? 2 : opts._blockHoist;
    const dataKey = `declaration:${kind}:${blockHoist}`;
    let declarPath = !unique && path.getData(dataKey);
    if (!declarPath) {
      const declar = variableDeclaration$1(kind, []);
      declar._blockHoist = blockHoist;
      [declarPath] = path.unshiftContainer("body", [declar]);
      if (!unique) path.setData(dataKey, declarPath);
    }
    const declarator = variableDeclarator$1(id, init);
    const len = declarPath.node.declarations.push(declarator);
    path.scope.registerBinding(kind, declarPath.get("declarations")[len - 1]);
  }
  getProgramParent() {
    let scope = this;
    do {
      if (scope.path.isProgram()) {
        return scope;
      }
    } while (scope = scope.parent);
    throw new Error("Couldn't find a Program");
  }
  getFunctionParent() {
    let scope = this;
    do {
      if (scope.path.isFunctionParent()) {
        return scope;
      }
    } while (scope = scope.parent);
    return null;
  }
  getBlockParent() {
    let scope = this;
    do {
      if (scope.path.isBlockParent()) {
        return scope;
      }
    } while (scope = scope.parent);
    throw new Error("We couldn't find a BlockStatement, For, Switch, Function, Loop or Program...");
  }
  getPatternParent() {
    let scope = this;
    do {
      if (!scope.path.isPattern()) {
        return scope.getBlockParent();
      }
    } while (scope = scope.parent.parent);
    throw new Error("We couldn't find a BlockStatement, For, Switch, Function, Loop or Program...");
  }
  getAllBindings() {
    const ids = Object.create(null);
    let scope = this;
    do {
      for (const key of Object.keys(scope.bindings)) {
        if (key in ids === false) {
          ids[key] = scope.bindings[key];
        }
      }
      scope = scope.parent;
    } while (scope);
    return ids;
  }
  bindingIdentifierEquals(name, node) {
    return this.getBindingIdentifier(name) === node;
  }
  getBinding(name) {
    let scope = this;
    let previousPath;
    do {
      const binding = scope.getOwnBinding(name);
      if (binding) {
        if (previousPath?.isPattern() && binding.kind !== "param" && binding.kind !== "local") ; else {
          return binding;
        }
      } else if (!binding && name === "arguments" && scope.path.isFunction() && !scope.path.isArrowFunctionExpression()) {
        break;
      }
      previousPath = scope.path;
    } while (scope = scope.parent);
  }
  getOwnBinding(name) {
    return this.bindings[name];
  }
  getBindingIdentifier(name) {
    return this.getBinding(name)?.identifier;
  }
  getOwnBindingIdentifier(name) {
    const binding = this.bindings[name];
    return binding?.identifier;
  }
  hasOwnBinding(name) {
    return !!this.getOwnBinding(name);
  }
  hasBinding(name, opts) {
    if (!name) return false;
    let noGlobals;
    let noUids;
    let upToScope;
    if (typeof opts === "object") {
      noGlobals = opts.noGlobals;
      noUids = opts.noUids;
      upToScope = opts.upToScope;
    } else if (typeof opts === "boolean") {
      noGlobals = opts;
    }
    let scope = this;
    do {
      if (upToScope === scope) {
        break;
      }
      if (scope.hasOwnBinding(name)) {
        return true;
      }
    } while (scope = scope.parent);
    if (!noUids && this.hasUid(name)) return true;
    if (!noGlobals && Scope.globals.includes(name)) return true;
    if (!noGlobals && Scope.contextVariables.includes(name)) return true;
    return false;
  }
  parentHasBinding(name, opts) {
    return this.parent?.hasBinding(name, opts);
  }
  moveBindingTo(name, scope) {
    const info = this.getBinding(name);
    if (info) {
      info.scope.removeOwnBinding(name);
      info.scope = scope;
      scope.bindings[name] = info;
    }
  }
  removeOwnBinding(name) {
    delete this.bindings[name];
  }
  removeBinding(name) {
    this.getBinding(name)?.scope.removeOwnBinding(name);
    this.getProgramParent().uidsSet.delete(name);
  }
  hoistVariables(emit = id => this.push({
    id
  })) {
    this.crawl();
    const seen = new Set();
    for (const name of Object.keys(this.bindings)) {
      const binding = this.bindings[name];
      if (!binding) continue;
      const {
        path
      } = binding;
      if (!path.isVariableDeclarator()) continue;
      const {
        parent,
        parentPath
      } = path;
      if (parent.kind !== "var" || seen.has(parent)) continue;
      seen.add(path.parent);
      let firstId;
      const init = [];
      for (const decl of parent.declarations) {
        firstId ??= decl.id;
        if (decl.init) {
          init.push(assignmentExpression$3("=", decl.id, decl.init));
        }
        const ids = Object.keys(getBindingIdentifiers$2(decl, false, true, true));
        for (const name of ids) {
          emit(identifier$3(name), decl.init != null);
        }
      }
      if (parentPath.parentPath.isForXStatement({
        left: parent
      })) {
        parentPath.replaceWith(firstId);
      } else if (init.length === 0) {
        parentPath.remove();
      } else {
        const expr = init.length === 1 ? init[0] : sequenceExpression$2(init);
        if (parentPath.parentPath.isForStatement({
          init: pa