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node_modules/acorn-walk/CHANGELOG.md

@@ -0,0 +1,131 @@
+## 7.2.0 (2020-06-17)
+
+### New features
+
+Support optional chaining and nullish coalescing.
+
+Support `import.meta`.
+
+Add support for `export * as ns from "source"`.
+
+## 7.1.1 (2020-02-13)
+
+### Bug fixes
+
+Clean up the type definitions to actually work well with the main parser.
+
+## 7.1.0 (2020-02-11)
+
+### New features
+
+Add a TypeScript definition file for the library.
+
+## 7.0.0 (2017-08-12)
+
+### New features
+
+Support walking `ImportExpression` nodes.
+
+## 6.2.0 (2017-07-04)
+
+### New features
+
+Add support for `Import` nodes.
+
+## 6.1.0 (2018-09-28)
+
+### New features
+
+The walker now walks `TemplateElement` nodes.
+
+## 6.0.1 (2018-09-14)
+
+### Bug fixes
+
+Fix bad "main" field in package.json.
+
+## 6.0.0 (2018-09-14)
+
+### Breaking changes
+
+This is now a separate package, `acorn-walk`, rather than part of the main `acorn` package.
+
+The `ScopeBody` and `ScopeExpression` meta-node-types are no longer supported.
+
+## 5.7.1 (2018-06-15)
+
+### Bug fixes
+
+Make sure the walker and bin files are rebuilt on release (the previous release didn't get the up-to-date versions).
+
+## 5.7.0 (2018-06-15)
+
+### Bug fixes
+
+Fix crash in walker when walking a binding-less catch node.
+
+## 5.6.2 (2018-06-05)
+
+### Bug fixes
+
+In the walker, go back to allowing the `baseVisitor` argument to be null to default to the default base everywhere.
+
+## 5.6.1 (2018-06-01)
+
+### Bug fixes
+
+Fix regression when passing `null` as fourth argument to `walk.recursive`.
+
+## 5.6.0 (2018-05-31)
+
+### Bug fixes
+
+Fix a bug in the walker that caused a crash when walking an object pattern spread.
+
+## 5.5.1 (2018-03-06)
+
+### Bug fixes
+
+Fix regression in walker causing property values in object patterns to be walked as expressions.
+
+## 5.5.0 (2018-02-27)
+
+### Bug fixes
+
+Support object spread in the AST walker.
+
+## 5.4.1 (2018-02-02)
+
+### Bug fixes
+
+5.4.0 somehow accidentally included an old version of walk.js.
+
+## 5.2.0 (2017-10-30)
+
+### Bug fixes
+
+The `full` and `fullAncestor` walkers no longer visit nodes multiple times.
+
+## 5.1.0 (2017-07-05)
+
+### New features
+
+New walker functions `full` and `fullAncestor`.
+
+## 3.2.0 (2016-06-07)
+
+### New features
+
+Make it possible to use `visit.ancestor` with a walk state.
+
+## 3.1.0 (2016-04-18)
+
+### New features
+
+The walker now allows defining handlers for `CatchClause` nodes.
+
+## 2.5.2 (2015-10-27)
+
+### Fixes
+
+Fix bug where the walker walked an exported `let` statement as an expression.

node_modules/acorn-walk/LICENSE

@@ -0,0 +1,19 @@
+Copyright (C) 2012-2018 by various contributors (see AUTHORS)
+
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in
+all copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+THE SOFTWARE.

node_modules/acorn-walk/README.md

@@ -0,0 +1,126 @@
+# Acorn AST walker
+
+An abstract syntax tree walker for the
+[ESTree](https://github.com/estree/estree) format.
+
+## Community
+
+Acorn is open source software released under an
+[MIT license](https://github.com/acornjs/acorn/blob/master/acorn-walk/LICENSE).
+
+You are welcome to
+[report bugs](https://github.com/acornjs/acorn/issues) or create pull
+requests on [github](https://github.com/acornjs/acorn). For questions
+and discussion, please use the
+[Tern discussion forum](https://discuss.ternjs.net).
+
+## Installation
+
+The easiest way to install acorn is from [`npm`](https://www.npmjs.com/):
+
+```sh
+npm install acorn-walk
+```
+
+Alternately, you can download the source and build acorn yourself:
+
+```sh
+git clone https://github.com/acornjs/acorn.git
+cd acorn
+npm install
+```
+
+## Interface
+
+An algorithm for recursing through a syntax tree is stored as an
+object, with a property for each tree node type holding a function
+that will recurse through such a node. There are several ways to run
+such a walker.
+
+**simple**`(node, visitors, base, state)` does a 'simple' walk over a
+tree. `node` should be the AST node to walk, and `visitors` an object
+with properties whose names correspond to node types in the [ESTree
+spec](https://github.com/estree/estree). The properties should contain
+functions that will be called with the node object and, if applicable
+the state at that point. The last two arguments are optional. `base`
+is a walker algorithm, and `state` is a start state. The default
+walker will simply visit all statements and expressions and not
+produce a meaningful state. (An example of a use of state is to track
+scope at each point in the tree.)
+
+```js
+const acorn = require("acorn")
+const walk = require("acorn-walk")
+
+walk.simple(acorn.parse("let x = 10"), {
+  Literal(node) {
+    console.log(`Found a literal: ${node.value}`)
+  }
+})
+```
+
+**ancestor**`(node, visitors, base, state)` does a 'simple' walk over
+a tree, building up an array of ancestor nodes (including the current node)
+and passing the array to the callbacks as a third parameter.
+
+```js
+const acorn = require("acorn")
+const walk = require("acorn-walk")
+
+walk.ancestor(acorn.parse("foo('hi')"), {
+  Literal(_, ancestors) {
+    console.log("This literal's ancestors are:", ancestors.map(n => n.type))
+  }
+})
+```
+
+**recursive**`(node, state, functions, base)` does a 'recursive'
+walk, where the walker functions are responsible for continuing the
+walk on the child nodes of their target node. `state` is the start
+state, and `functions` should contain an object that maps node types
+to walker functions. Such functions are called with `(node, state, c)`
+arguments, and can cause the walk to continue on a sub-node by calling
+the `c` argument on it with `(node, state)` arguments. The optional
+`base` argument provides the fallback walker functions for node types
+that aren't handled in the `functions` object. If not given, the
+default walkers will be used.
+
+**make**`(functions, base)` builds a new walker object by using the
+walker functions in `functions` and filling in the missing ones by
+taking defaults from `base`.
+
+**full**`(node, callback, base, state)` does a 'full' walk over a
+tree, calling the callback with the arguments (node, state, type) for
+each node
+
+**fullAncestor**`(node, callback, base, state)` does a 'full' walk
+over a tree, building up an array of ancestor nodes (including the
+current node) and passing the array to the callbacks as a third
+parameter.
+
+```js
+const acorn = require("acorn")
+const walk = require("acorn-walk")
+
+walk.full(acorn.parse("1 + 1"), node => {
+  console.log(`There's a ${node.type} node at ${node.ch}`)
+})
+```
+
+**findNodeAt**`(node, start, end, test, base, state)` tries to locate
+a node in a tree at the given start and/or end offsets, which
+satisfies the predicate `test`. `start` and `end` can be either `null`
+(as wildcard) or a number. `test` may be a string (indicating a node
+type) or a function that takes `(nodeType, node)` arguments and
+returns a boolean indicating whether this node is interesting. `base`
+and `state` are optional, and can be used to specify a custom walker.
+Nodes are tested from inner to outer, so if two nodes match the
+boundaries, the inner one will be preferred.
+
+**findNodeAround**`(node, pos, test, base, state)` is a lot like
+`findNodeAt`, but will match any node that exists 'around' (spanning)
+the given position.
+
+**findNodeAfter**`(node, pos, test, base, state)` is similar to
+`findNodeAround`, but will match all nodes *after* the given position
+(testing outer nodes before inner nodes).

node_modules/acorn-walk/dist/walk.d.ts

@@ -0,0 +1,112 @@
+import {Node} from 'acorn';
+
+declare module "acorn-walk" {
+  type FullWalkerCallback<TState> = (
+    node: Node,
+    state: TState,
+    type: string
+  ) => void;
+
+  type FullAncestorWalkerCallback<TState> = (
+    node: Node,
+    state: TState | Node[],
+    ancestors: Node[],
+    type: string
+  ) => void;
+  type WalkerCallback<TState> = (node: Node, state: TState) => void;
+
+  type SimpleWalkerFn<TState> = (
+    node: Node,
+    state: TState
+  ) => void;
+  
+  type AncestorWalkerFn<TState> = (
+    node: Node,
+    state: TState| Node[],
+    ancestors: Node[]
+  ) => void;
+
+  type RecursiveWalkerFn<TState> = (
+    node: Node,
+    state: TState,
+    callback: WalkerCallback<TState>
+  ) => void;
+  
+  type SimpleVisitors<TState> = {
+    [type: string]: SimpleWalkerFn<TState>
+  };
+
+  type AncestorVisitors<TState> = {
+    [type: string]: AncestorWalkerFn<TState>
+  };
+  
+  type RecursiveVisitors<TState> = {
+    [type: string]: RecursiveWalkerFn<TState>
+  };
+
+  type FindPredicate = (type: string, node: Node) => boolean;
+
+  interface Found<TState> {
+    node: Node,
+    state: TState
+  }
+
+  export function simple<TState>(
+    node: Node,
+    visitors: SimpleVisitors<TState>,
+    base?: RecursiveVisitors<TState>,
+    state?: TState
+  ): void;
+
+  export function ancestor<TState>(
+    node: Node,
+    visitors: AncestorVisitors<TState>,
+    base?: RecursiveVisitors<TState>,
+    state?: TState
+  ): void;
+
+  export function recursive<TState>(
+    node: Node,
+    state: TState,
+    functions: RecursiveVisitors<TState>,
+    base?: RecursiveVisitors<TState>
+  ): void;
+
+  export function full<TState>(
+    node: Node,
+    callback: FullWalkerCallback<TState>,
+    base?: RecursiveVisitors<TState>,
+    state?: TState
+  ): void;
+
+  export function fullAncestor<TState>(
+    node: Node,
+    callback: FullAncestorWalkerCallback<TState>,
+    base?: RecursiveVisitors<TState>,
+    state?: TState
+  ): void;
+
+  export function make<TState>(
+    functions: RecursiveVisitors<TState>,
+    base?: RecursiveVisitors<TState>
+  ): RecursiveVisitors<TState>;
+
+  export function findNodeAt<TState>(
+    node: Node,
+    start: number | undefined,
+    end?: number | undefined,
+    type?: FindPredicate | string,
+    base?: RecursiveVisitors<TState>,
+    state?: TState
+  ): Found<TState> | undefined;
+
+  export function findNodeAround<TState>(
+    node: Node,
+    start: number | undefined,
+    type?: FindPredicate | string,
+    base?: RecursiveVisitors<TState>,
+    state?: TState
+  ): Found<TState> | undefined;
+
+  export const findNodeAfter: typeof findNodeAround;
+}

node_modules/acorn-walk/dist/walk.js

@@ -0,0 +1,463 @@
+(function (global, factory) {
+  typeof exports === 'object' && typeof module !== 'undefined' ? factory(exports) :
+  typeof define === 'function' && define.amd ? define(['exports'], factory) :
+  (global = global || self, factory((global.acorn = global.acorn || {}, global.acorn.walk = {})));
+}(this, (function (exports) { 'use strict';
+
+  // AST walker module for Mozilla Parser API compatible trees
+
+  // A simple walk is one where you simply specify callbacks to be
+  // called on specific nodes. The last two arguments are optional. A
+  // simple use would be
+  //
+  //     walk.simple(myTree, {
+  //         Expression: function(node) { ... }
+  //     });
+  //
+  // to do something with all expressions. All Parser API node types
+  // can be used to identify node types, as well as Expression and
+  // Statement, which denote categories of nodes.
+  //
+  // The base argument can be used to pass a custom (recursive)
+  // walker, and state can be used to give this walked an initial
+  // state.
+
+  function simple(node, visitors, baseVisitor, state, override) {
+    if (!baseVisitor) { baseVisitor = base
+    ; }(function c(node, st, override) {
+      var type = override || node.type, found = visitors[type];
+      baseVisitor[type](node, st, c);
+      if (found) { found(node, st); }
+    })(node, state, override);
+  }
+
+  // An ancestor walk keeps an array of ancestor nodes (including the
+  // current node) and passes them to the callback as third parameter
+  // (and also as state parameter when no other state is present).
+  function ancestor(node, visitors, baseVisitor, state, override) {
+    var ancestors = [];
+    if (!baseVisitor) { baseVisitor = base
+    ; }(function c(node, st, override) {
+      var type = override || node.type, found = visitors[type];
+      var isNew = node !== ancestors[ancestors.length - 1];
+      if (isNew) { ancestors.push(node); }
+      baseVisitor[type](node, st, c);
+      if (found) { found(node, st || ancestors, ancestors); }
+      if (isNew) { ancestors.pop(); }
+    })(node, state, override);
+  }
+
+  // A recursive walk is one where your functions override the default
+  // walkers. They can modify and replace the state parameter that's
+  // threaded through the walk, and can opt how and whether to walk
+  // their child nodes (by calling their third argument on these
+  // nodes).
+  function recursive(node, state, funcs, baseVisitor, override) {
+    var visitor = funcs ? make(funcs, baseVisitor || undefined) : baseVisitor
+    ;(function c(node, st, override) {
+      visitor[override || node.type](node, st, c);
+    })(node, state, override);
+  }
+
+  function makeTest(test) {
+    if (typeof test === "string")
+      { return function (type) { return type === test; } }
+    else if (!test)
+      { return function () { return true; } }
+    else
+      { return test }
+  }
+
+  var Found = function Found(node, state) { this.node = node; this.state = state; };
+
+  // A full walk triggers the callback on each node
+  function full(node, callback, baseVisitor, state, override) {
+    if (!baseVisitor) { baseVisitor = base
+    ; }(function c(node, st, override) {
+      var type = override || node.type;
+      baseVisitor[type](node, st, c);
+      if (!override) { callback(node, st, type); }
+    })(node, state, override);
+  }
+
+  // An fullAncestor walk is like an ancestor walk, but triggers
+  // the callback on each node
+  function fullAncestor(node, callback, baseVisitor, state) {
+    if (!baseVisitor) { baseVisitor = base; }
+    var ancestors = []
+    ;(function c(node, st, override) {
+      var type = override || node.type;
+      var isNew = node !== ancestors[ancestors.length - 1];
+      if (isNew) { ancestors.push(node); }
+      baseVisitor[type](node, st, c);
+      if (!override) { callback(node, st || ancestors, ancestors, type); }
+      if (isNew) { ancestors.pop(); }
+    })(node, state);
+  }
+
+  // Find a node with a given start, end, and type (all are optional,
+  // null can be used as wildcard). Returns a {node, state} object, or
+  // undefined when it doesn't find a matching node.
+  function findNodeAt(node, start, end, test, baseVisitor, state) {
+    if (!baseVisitor) { baseVisitor = base; }
+    test = makeTest(test);
+    try {
+      (function c(node, st, override) {
+        var type = override || node.type;
+        if ((start == null || node.start <= start) &&
+            (end == null || node.end >= end))
+          { baseVisitor[type](node, st, c); }
+        if ((start == null || node.start === start) &&
+            (end == null || node.end === end) &&
+            test(type, node))
+          { throw new Found(node, st) }
+      })(node, state);
+    } catch (e) {
+      if (e instanceof Found) { return e }
+      throw e
+    }
+  }
+
+  // Find the innermost node of a given type that contains the given
+  // position. Interface similar to findNodeAt.
+  function findNodeAround(node, pos, test, baseVisitor, state) {
+    test = makeTest(test);
+    if (!baseVisitor) { baseVisitor = base; }
+    try {
+      (function c(node, st, override) {
+        var type = override || node.type;
+        if (node.start > pos || node.end < pos) { return }
+        baseVisitor[type](node, st, c);
+        if (test(type, node)) { throw new Found(node, st) }
+      })(node, state);
+    } catch (e) {
+      if (e instanceof Found) { return e }
+      throw e
+    }
+  }
+
+  // Find the outermost matching node after a given position.
+  function findNodeAfter(node, pos, test, baseVisitor, state) {
+    test = makeTest(test);
+    if (!baseVisitor) { baseVisitor = base; }
+    try {
+      (function c(node, st, override) {
+        if (node.end < pos) { return }
+        var type = override || node.type;
+        if (node.start >= pos && test(type, node)) { throw new Found(node, st) }
+        baseVisitor[type](node, st, c);
+      })(node, state);
+    } catch (e) {
+      if (e instanceof Found) { return e }
+      throw e
+    }
+  }
+
+  // Find the outermost matching node before a given position.
+  function findNodeBefore(node, pos, test, baseVisitor, state) {
+    test = makeTest(test);
+    if (!baseVisitor) { baseVisitor = base; }
+    var max
+    ;(function c(node, st, override) {
+      if (node.start > pos) { return }
+      var type = override || node.type;
+      if (node.end <= pos && (!max || max.node.end < node.end) && test(type, node))
+        { max = new Found(node, st); }
+      baseVisitor[type](node, st, c);
+    })(node, state);
+    return max
+  }
+
+  // Fallback to an Object.create polyfill for older environments.
+  var create = Object.create || function(proto) {
+    function Ctor() {}
+    Ctor.prototype = proto;
+    return new Ctor
+  };
+
+  // Used to create a custom walker. Will fill in all missing node
+  // type properties with the defaults.
+  function make(funcs, baseVisitor) {
+    var visitor = create(baseVisitor || base);
+    for (var type in funcs) { visitor[type] = funcs[type]; }
+    return visitor
+  }
+
+  function skipThrough(node, st, c) { c(node, st); }
+  function ignore(_node, _st, _c) {}
+
+  // Node walkers.
+
+  var base = {};
+
+  base.Program = base.BlockStatement = function (node, st, c) {
+    for (var i = 0, list = node.body; i < list.length; i += 1)
+      {
+      var stmt = list[i];
+
+      c(stmt, st, "Statement");
+    }
+  };
+  base.Statement = skipThrough;
+  base.EmptyStatement = ignore;
+  base.ExpressionStatement = base.ParenthesizedExpression = base.ChainExpression =
+    function (node, st, c) { return c(node.expression, st, "Expression"); };
+  base.IfStatement = function (node, st, c) {
+    c(node.test, st, "Expression");
+    c(node.consequent, st, "Statement");
+    if (node.alternate) { c(node.alternate, st, "Statement"); }
+  };
+  base.LabeledStatement = function (node, st, c) { return c(node.body, st, "Statement"); };
+  base.BreakStatement = base.ContinueStatement = ignore;
+  base.WithStatement = function (node, st, c) {
+    c(node.object, st, "Expression");
+    c(node.body, st, "Statement");
+  };
+  base.SwitchStatement = function (node, st, c) {
+    c(node.discriminant, st, "Expression");
+    for (var i$1 = 0, list$1 = node.cases; i$1 < list$1.length; i$1 += 1) {
+      var cs = list$1[i$1];
+
+      if (cs.test) { c(cs.test, st, "Expression"); }
+      for (var i = 0, list = cs.consequent; i < list.length; i += 1)
+        {
+        var cons = list[i];
+
+        c(cons, st, "Statement");
+      }
+    }
+  };
+  base.SwitchCase = function (node, st, c) {
+    if (node.test) { c(node.test, st, "Expression"); }
+    for (var i = 0, list = node.consequent; i < list.length; i += 1)
+      {
+      var cons = list[i];
+
+      c(cons, st, "Statement");
+    }
+  };
+  base.ReturnStatement = base.YieldExpression = base.AwaitExpression = function (node, st, c) {
+    if (node.argument) { c(node.argument, st, "Expression"); }
+  };
+  base.ThrowStatement = base.SpreadElement =
+    function (node, st, c) { return c(node.argument, st, "Expression"); };
+  base.TryStatement = function (node, st, c) {
+    c(node.block, st, "Statement");
+    if (node.handler) { c(node.handler, st); }
+    if (node.finalizer) { c(node.finalizer, st, "Statement"); }
+  };
+  base.CatchClause = function (node, st, c) {
+    if (node.param) { c(node.param, st, "Pattern"); }
+    c(node.body, st, "Statement");
+  };
+  base.WhileStatement = base.DoWhileStatement = function (node, st, c) {
+    c(node.test, st, "Expression");
+    c(node.body, st, "Statement");
+  };
+  base.ForStatement = function (node, st, c) {
+    if (node.init) { c(node.init, st, "ForInit"); }
+    if (node.test) { c(node.test, st, "Expression"); }
+    if (node.update) { c(node.update, st, "Expression"); }
+    c(node.body, st, "Statement");
+  };
+  base.ForInStatement = base.ForOfStatement = function (node, st, c) {
+    c(node.left, st, "ForInit");
+    c(node.right, st, "Expression");
+    c(node.body, st, "Statement");
+  };
+  base.ForInit = function (node, st, c) {
+    if (node.type === "VariableDeclaration") { c(node, st); }
+    else { c(node, st, "Expression"); }
+  };
+  base.DebuggerStatement = ignore;
+
+  base.FunctionDeclaration = function (node, st, c) { return c(node, st, "Function"); };
+  base.VariableDeclaration = function (node, st, c) {
+    for (var i = 0, list = node.declarations; i < list.length; i += 1)
+      {
+      var decl = list[i];
+
+      c(decl, st);
+    }
+  };
+  base.VariableDeclarator = function (node, st, c) {
+    c(node.id, st, "Pattern");
+    if (node.init) { c(node.init, st, "Expression"); }
+  };
+
+  base.Function = function (node, st, c) {
+    if (node.id) { c(node.id, st, "Pattern"); }
+    for (var i = 0, list = node.params; i < list.length; i += 1)
+      {
+      var param = list[i];
+
+      c(param, st, "Pattern");
+    }
+    c(node.body, st, node.expression ? "Expression" : "Statement");
+  };
+
+  base.Pattern = function (node, st, c) {
+    if (node.type === "Identifier")
+      { c(node, st, "VariablePattern"); }
+    else if (node.type === "MemberExpression")
+      { c(node, st, "MemberPattern"); }
+    else
+      { c(node, st); }
+  };
+  base.VariablePattern = ignore;
+  base.MemberPattern = skipThrough;
+  base.RestElement = function (node, st, c) { return c(node.argument, st, "Pattern"); };
+  base.ArrayPattern = function (node, st, c) {
+    for (var i = 0, list = node.elements; i < list.length; i += 1) {
+      var elt = list[i];
+
+      if (elt) { c(elt, st, "Pattern"); }
+    }
+  };
+  base.ObjectPattern = function (node, st, c) {
+    for (var i = 0, list = node.properties; i < list.length; i += 1) {
+      var prop = list[i];
+
+      if (prop.type === "Property") {
+        if (prop.computed) { c(prop.key, st, "Expression"); }
+        c(prop.value, st, "Pattern");
+      } else if (prop.type === "RestElement") {
+        c(prop.argument, st, "Pattern");
+      }
+    }
+  };
+
+  base.Expression = skipThrough;
+  base.ThisExpression = base.Super = base.MetaProperty = ignore;
+  base.ArrayExpression = function (node, st, c) {
+    for (var i = 0, list = node.elements; i < list.length; i += 1) {
+      var elt = list[i];
+
+      if (elt) { c(elt, st, "Expression"); }
+    }
+  };
+  base.ObjectExpression = function (node, st, c) {
+    for (var i = 0, list = node.properties; i < list.length; i += 1)
+      {
+      var prop = list[i];
+
+      c(prop, st);
+    }
+  };
+  base.FunctionExpression = base.ArrowFunctionExpression = base.FunctionDeclaration;
+  base.SequenceExpression = function (node, st, c) {
+    for (var i = 0, list = node.expressions; i < list.length; i += 1)
+      {
+      var expr = list[i];
+
+      c(expr, st, "Expression");
+    }
+  };
+  base.TemplateLiteral = function (node, st, c) {
+    for (var i = 0, list = node.quasis; i < list.length; i += 1)
+      {
+      var quasi = list[i];
+
+      c(quasi, st);
+    }
+
+    for (var i$1 = 0, list$1 = node.expressions; i$1 < list$1.length; i$1 += 1)
+      {
+      var expr = list$1[i$1];
+
+      c(expr, st, "Expression");
+    }
+  };
+  base.TemplateElement = ignore;
+  base.UnaryExpression = base.UpdateExpression = function (node, st, c) {
+    c(node.argument, st, "Expression");
+  };
+  base.BinaryExpression = base.LogicalExpression = function (node, st, c) {
+    c(node.left, st, "Expression");
+    c(node.right, st, "Expression");
+  };
+  base.AssignmentExpression = base.AssignmentPattern = function (node, st, c) {
+    c(node.left, st, "Pattern");
+    c(node.right, st, "Expression");
+  };
+  base.ConditionalExpression = function (node, st, c) {
+    c(node.test, st, "Expression");
+    c(node.consequent, st, "Expression");
+    c(node.alternate, st, "Expression");
+  };
+  base.NewExpression = base.CallExpression = function (node, st, c) {
+    c(node.callee, st, "Expression");
+    if (node.arguments)
+      { for (var i = 0, list = node.arguments; i < list.length; i += 1)
+        {
+          var arg = list[i];
+
+          c(arg, st, "Expression");
+        } }
+  };
+  base.MemberExpression = function (node, st, c) {
+    c(node.object, st, "Expression");
+    if (node.computed) { c(node.property, st, "Expression"); }
+  };
+  base.ExportNamedDeclaration = base.ExportDefaultDeclaration = function (node, st, c) {
+    if (node.declaration)
+      { c(node.declaration, st, node.type === "ExportNamedDeclaration" || node.declaration.id ? "Statement" : "Expression"); }
+    if (node.source) { c(node.source, st, "Expression"); }
+  };
+  base.ExportAllDeclaration = function (node, st, c) {
+    if (node.exported)
+      { c(node.exported, st); }
+    c(node.source, st, "Expression");
+  };
+  base.ImportDeclaration = function (node, st, c) {
+    for (var i = 0, list = node.specifiers; i < list.length; i += 1)
+      {
+      var spec = list[i];
+
+      c(spec, st);
+    }
+    c(node.source, st, "Expression");
+  };
+  base.ImportExpression = function (node, st, c) {
+    c(node.source, st, "Expression");
+  };
+  base.ImportSpecifier = base.ImportDefaultSpecifier = base.ImportNamespaceSpecifier = base.Identifier = base.Literal = ignore;
+
+  base.TaggedTemplateExpression = function (node, st, c) {
+    c(node.tag, st, "Expression");
+    c(node.quasi, st, "Expression");
+  };
+  base.ClassDeclaration = base.ClassExpression = function (node, st, c) { return c(node, st, "Class"); };
+  base.Class = function (node, st, c) {
+    if (node.id) { c(node.id, st, "Pattern"); }
+    if (node.superClass) { c(node.superClass, st, "Expression"); }
+    c(node.body, st);
+  };
+  base.ClassBody = function (node, st, c) {
+    for (var i = 0, list = node.body; i < list.length; i += 1)
+      {
+      var elt = list[i];
+
+      c(elt, st);
+    }
+  };
+  base.MethodDefinition = base.Property = function (node, st, c) {
+    if (node.computed) { c(node.key, st, "Expression"); }
+    c(node.value, st, "Expression");
+  };
+
+  exports.ancestor = ancestor;
+  exports.base = base;
+  exports.findNodeAfter = findNodeAfter;
+  exports.findNodeAround = findNodeAround;
+  exports.findNodeAt = findNodeAt;
+  exports.findNodeBefore = findNodeBefore;
+  exports.full = full;
+  exports.fullAncestor = fullAncestor;
+  exports.make = make;
+  exports.recursive = recursive;
+  exports.simple = simple;
+
+  Object.defineProperty(exports, '__esModule', { value: true });
+
+})));

node_modules/acorn-walk/dist/walk.mjs

@@ -0,0 +1,443 @@
+// AST walker module for Mozilla Parser API compatible trees
+
+// A simple walk is one where you simply specify callbacks to be
+// called on specific nodes. The last two arguments are optional. A
+// simple use would be
+//
+//     walk.simple(myTree, {
+//         Expression: function(node) { ... }
+//     });
+//
+// to do something with all expressions. All Parser API node types
+// can be used to identify node types, as well as Expression and
+// Statement, which denote categories of nodes.
+//
+// The base argument can be used to pass a custom (recursive)
+// walker, and state can be used to give this walked an initial
+// state.
+
+function simple(node, visitors, baseVisitor, state, override) {
+  if (!baseVisitor) { baseVisitor = base
+  ; }(function c(node, st, override) {
+    var type = override || node.type, found = visitors[type];
+    baseVisitor[type](node, st, c);
+    if (found) { found(node, st); }
+  })(node, state, override);
+}
+
+// An ancestor walk keeps an array of ancestor nodes (including the
+// current node) and passes them to the callback as third parameter
+// (and also as state parameter when no other state is present).
+function ancestor(node, visitors, baseVisitor, state, override) {
+  var ancestors = [];
+  if (!baseVisitor) { baseVisitor = base
+  ; }(function c(node, st, override) {
+    var type = override || node.type, found = visitors[type];
+    var isNew = node !== ancestors[ancestors.length - 1];
+    if (isNew) { ancestors.push(node); }
+    baseVisitor[type](node, st, c);
+    if (found) { found(node, st || ancestors, ancestors); }
+    if (isNew) { ancestors.pop(); }
+  })(node, state, override);
+}
+
+// A recursive walk is one where your functions override the default
+// walkers. They can modify and replace the state parameter that's
+// threaded through the walk, and can opt how and whether to walk
+// their child nodes (by calling their third argument on these
+// nodes).
+function recursive(node, state, funcs, baseVisitor, override) {
+  var visitor = funcs ? make(funcs, baseVisitor || undefined) : baseVisitor
+  ;(function c(node, st, override) {
+    visitor[override || node.type](node, st, c);
+  })(node, state, override);
+}
+
+function makeTest(test) {
+  if (typeof test === "string")
+    { return function (type) { return type === test; } }
+  else if (!test)
+    { return function () { return true; } }
+  else
+    { return test }
+}
+
+var Found = function Found(node, state) { this.node = node; this.state = state; };
+
+// A full walk triggers the callback on each node
+function full(node, callback, baseVisitor, state, override) {
+  if (!baseVisitor) { baseVisitor = base
+  ; }(function c(node, st, override) {
+    var type = override || node.type;
+    baseVisitor[type](node, st, c);
+    if (!override) { callback(node, st, type); }
+  })(node, state, override);
+}
+
+// An fullAncestor walk is like an ancestor walk, but triggers
+// the callback on each node
+function fullAncestor(node, callback, baseVisitor, state) {
+  if (!baseVisitor) { baseVisitor = base; }
+  var ancestors = []
+  ;(function c(node, st, override) {
+    var type = override || node.type;
+    var isNew = node !== ancestors[ancestors.length - 1];
+    if (isNew) { ancestors.push(node); }
+    baseVisitor[type](node, st, c);
+    if (!override) { callback(node, st || ancestors, ancestors, type); }
+    if (isNew) { ancestors.pop(); }
+  })(node, state);
+}
+
+// Find a node with a given start, end, and type (all are optional,
+// null can be used as wildcard). Returns a {node, state} object, or
+// undefined when it doesn't find a matching node.
+function findNodeAt(node, start, end, test, baseVisitor, state) {
+  if (!baseVisitor) { baseVisitor = base; }
+  test = makeTest(test);
+  try {
+    (function c(node, st, override) {
+      var type = override || node.type;
+      if ((start == null || node.start <= start) &&
+          (end == null || node.end >= end))
+        { baseVisitor[type](node, st, c); }
+      if ((start == null || node.start === start) &&
+          (end == null || node.end === end) &&
+          test(type, node))
+        { throw new Found(node, st) }
+    })(node, state);
+  } catch (e) {
+    if (e instanceof Found) { return e }
+    throw e
+  }
+}
+
+// Find the innermost node of a given type that contains the given
+// position. Interface similar to findNodeAt.
+function findNodeAround(node, pos, test, baseVisitor, state) {
+  test = makeTest(test);
+  if (!baseVisitor) { baseVisitor = base; }
+  try {
+    (function c(node, st, override) {
+      var type = override || node.type;
+      if (node.start > pos || node.end < pos) { return }
+      baseVisitor[type](node, st, c);
+      if (test(type, node)) { throw new Found(node, st) }
+    })(node, state);
+  } catch (e) {
+    if (e instanceof Found) { return e }
+    throw e
+  }
+}
+
+// Find the outermost matching node after a given position.
+function findNodeAfter(node, pos, test, baseVisitor, state) {
+  test = makeTest(test);
+  if (!baseVisitor) { baseVisitor = base; }
+  try {
+    (function c(node, st, override) {
+      if (node.end < pos) { return }
+      var type = override || node.type;
+      if (node.start >= pos && test(type, node)) { throw new Found(node, st) }
+      baseVisitor[type](node, st, c);
+    })(node, state);
+  } catch (e) {
+    if (e instanceof Found) { return e }
+    throw e
+  }
+}
+
+// Find the outermost matching node before a given position.
+function findNodeBefore(node, pos, test, baseVisitor, state) {
+  test = makeTest(test);
+  if (!baseVisitor) { baseVisitor = base; }
+  var max
+  ;(function c(node, st, override) {
+    if (node.start > pos) { return }
+    var type = override || node.type;
+    if (node.end <= pos && (!max || max.node.end < node.end) && test(type, node))
+      { max = new Found(node, st); }
+    baseVisitor[type](node, st, c);
+  })(node, state);
+  return max
+}
+
+// Fallback to an Object.create polyfill for older environments.
+var create = Object.create || function(proto) {
+  function Ctor() {}
+  Ctor.prototype = proto;
+  return new Ctor
+};
+
+// Used to create a custom walker. Will fill in all missing node
+// type properties with the defaults.
+function make(funcs, baseVisitor) {
+  var visitor = create(baseVisitor || base);
+  for (var type in funcs) { visitor[type] = funcs[type]; }
+  return visitor
+}
+
+function skipThrough(node, st, c) { c(node, st); }
+function ignore(_node, _st, _c) {}
+
+// Node walkers.
+
+var base = {};
+
+base.Program = base.BlockStatement = function (node, st, c) {
+  for (var i = 0, list = node.body; i < list.length; i += 1)
+    {
+    var stmt = list[i];
+
+    c(stmt, st, "Statement");
+  }
+};
+base.Statement = skipThrough;
+base.EmptyStatement = ignore;
+base.ExpressionStatement = base.ParenthesizedExpression = base.ChainExpression =
+  function (node, st, c) { return c(node.expression, st, "Expression"); };
+base.IfStatement = function (node, st, c) {
+  c(node.test, st, "Expression");
+  c(node.consequent, st, "Statement");
+  if (node.alternate) { c(node.alternate, st, "Statement"); }
+};
+base.LabeledStatement = function (node, st, c) { return c(node.body, st, "Statement"); };
+base.BreakStatement = base.ContinueStatement = ignore;
+base.WithStatement = function (node, st, c) {
+  c(node.object, st, "Expression");
+  c(node.body, st, "Statement");
+};
+base.SwitchStatement = function (node, st, c) {
+  c(node.discriminant, st, "Expression");
+  for (var i$1 = 0, list$1 = node.cases; i$1 < list$1.length; i$1 += 1) {
+    var cs = list$1[i$1];
+
+    if (cs.test) { c(cs.test, st, "Expression"); }
+    for (var i = 0, list = cs.consequent; i < list.length; i += 1)
+      {
+      var cons = list[i];
+
+      c(cons, st, "Statement");
+    }
+  }
+};
+base.SwitchCase = function (node, st, c) {
+  if (node.test) { c(node.test, st, "Expression"); }
+  for (var i = 0, list = node.consequent; i < list.length; i += 1)
+    {
+    var cons = list[i];
+
+    c(cons, st, "Statement");
+  }
+};
+base.ReturnStatement = base.YieldExpression = base.AwaitExpression = function (node, st, c) {
+  if (node.argument) { c(node.argument, st, "Expression"); }
+};
+base.ThrowStatement = base.SpreadElement =
+  function (node, st, c) { return c(node.argument, st, "Expression"); };
+base.TryStatement = function (node, st, c) {
+  c(node.block, st, "Statement");
+  if (node.handler) { c(node.handler, st); }
+  if (node.finalizer) { c(node.finalizer, st, "Statement"); }
+};
+base.CatchClause = function (node, st, c) {
+  if (node.param) { c(node.param, st, "Pattern"); }
+  c(node.body, st, "Statement");
+};
+base.WhileStatement = base.DoWhileStatement = function (node, st, c) {
+  c(node.test, st, "Expression");
+  c(node.body, st, "Statement");
+};
+base.ForStatement = function (node, st, c) {
+  if (node.init) { c(node.init, st, "ForInit"); }
+  if (node.test) { c(node.test, st, "Expression"); }
+  if (node.update) { c(node.update, st, "Expression"); }
+  c(node.body, st, "Statement");
+};
+base.ForInStatement = base.ForOfStatement = function (node, st, c) {
+  c(node.left, st, "ForInit");
+  c(node.right, st, "Expression");
+  c(node.body, st, "Statement");
+};
+base.ForInit = function (node, st, c) {
+  if (node.type === "VariableDeclaration") { c(node, st); }
+  else { c(node, st, "Expression"); }
+};
+base.DebuggerStatement = ignore;
+
+base.FunctionDeclaration = function (node, st, c) { return c(node, st, "Function"); };
+base.VariableDeclaration = function (node, st, c) {
+  for (var i = 0, list = node.declarations; i < list.length; i += 1)
+    {
+    var decl = list[i];
+
+    c(decl, st);
+  }
+};
+base.VariableDeclarator = function (node, st, c) {
+  c(node.id, st, "Pattern");
+  if (node.init) { c(node.init, st, "Expression"); }
+};
+
+base.Function = function (node, st, c) {
+  if (node.id) { c(node.id, st, "Pattern"); }
+  for (var i = 0, list = node.params; i < list.length; i += 1)
+    {
+    var param = list[i];
+
+    c(param, st, "Pattern");
+  }
+  c(node.body, st, node.expression ? "Expression" : "Statement");
+};
+
+base.Pattern = function (node, st, c) {
+  if (node.type === "Identifier")
+    { c(node, st, "VariablePattern"); }
+  else if (node.type === "MemberExpression")
+    { c(node, st, "MemberPattern"); }
+  else
+    { c(node, st); }
+};
+base.VariablePattern = ignore;
+base.MemberPattern = skipThrough;
+base.RestElement = function (node, st, c) { return c(node.argument, st, "Pattern"); };
+base.ArrayPattern = function (node, st, c) {
+  for (var i = 0, list = node.elements; i < list.length; i += 1) {
+    var elt = list[i];
+
+    if (elt) { c(elt, st, "Pattern"); }
+  }
+};
+base.ObjectPattern = function (node, st, c) {
+  for (var i = 0, list = node.properties; i < list.length; i += 1) {
+    var prop = list[i];
+
+    if (prop.type === "Property") {
+      if (prop.computed) { c(prop.key, st, "Expression"); }
+      c(prop.value, st, "Pattern");
+    } else if (prop.type === "RestElement") {
+      c(prop.argument, st, "Pattern");
+    }
+  }
+};
+
+base.Expression = skipThrough;
+base.ThisExpression = base.Super = base.MetaProperty = ignore;
+base.ArrayExpression = function (node, st, c) {
+  for (var i = 0, list = node.elements; i < list.length; i += 1) {
+    var elt = list[i];
+
+    if (elt) { c(elt, st, "Expression"); }
+  }
+};
+base.ObjectExpression = function (node, st, c) {
+  for (var i = 0, list = node.properties; i < list.length; i += 1)
+    {
+    var prop = list[i];
+
+    c(prop, st);
+  }
+};
+base.FunctionExpression = base.ArrowFunctionExpression = base.FunctionDeclaration;
+base.SequenceExpression = function (node, st, c) {
+  for (var i = 0, list = node.expressions; i < list.length; i += 1)
+    {
+    var expr = list[i];
+
+    c(expr, st, "Expression");
+  }
+};
+base.TemplateLiteral = function (node, st, c) {
+  for (var i = 0, list = node.quasis; i < list.length; i += 1)
+    {
+    var quasi = list[i];
+
+    c(quasi, st);
+  }
+
+  for (var i$1 = 0, list$1 = node.expressions; i$1 < list$1.length; i$1 += 1)
+    {
+    var expr = list$1[i$1];
+
+    c(expr, st, "Expression");
+  }
+};
+base.TemplateElement = ignore;
+base.UnaryExpression = base.UpdateExpression = function (node, st, c) {
+  c(node.argument, st, "Expression");
+};
+base.BinaryExpression = base.LogicalExpression = function (node, st, c) {
+  c(node.left, st, "Expression");
+  c(node.right, st, "Expression");
+};
+base.AssignmentExpression = base.AssignmentPattern = function (node, st, c) {
+  c(node.left, st, "Pattern");
+  c(node.right, st, "Expression");
+};
+base.ConditionalExpression = function (node, st, c) {
+  c(node.test, st, "Expression");
+  c(node.consequent, st, "Expression");
+  c(node.alternate, st, "Expression");
+};
+base.NewExpression = base.CallExpression = function (node, st, c) {
+  c(node.callee, st, "Expression");
+  if (node.arguments)
+    { for (var i = 0, list = node.arguments; i < list.length; i += 1)
+      {
+        var arg = list[i];
+
+        c(arg, st, "Expression");
+      } }
+};
+base.MemberExpression = function (node, st, c) {
+  c(node.object, st, "Expression");
+  if (node.computed) { c(node.property, st, "Expression"); }
+};
+base.ExportNamedDeclaration = base.ExportDefaultDeclaration = function (node, st, c) {
+  if (node.declaration)
+    { c(node.declaration, st, node.type === "ExportNamedDeclaration" || node.declaration.id ? "Statement" : "Expression"); }
+  if (node.source) { c(node.source, st, "Expression"); }
+};
+base.ExportAllDeclaration = function (node, st, c) {
+  if (node.exported)
+    { c(node.exported, st); }
+  c(node.source, st, "Expression");
+};
+base.ImportDeclaration = function (node, st, c) {
+  for (var i = 0, list = node.specifiers; i < list.length; i += 1)
+    {
+    var spec = list[i];
+
+    c(spec, st);
+  }
+  c(node.source, st, "Expression");
+};
+base.ImportExpression = function (node, st, c) {
+  c(node.source, st, "Expression");
+};
+base.ImportSpecifier = base.ImportDefaultSpecifier = base.ImportNamespaceSpecifier = base.Identifier = base.Literal = ignore;
+
+base.TaggedTemplateExpression = function (node, st, c) {
+  c(node.tag, st, "Expression");
+  c(node.quasi, st, "Expression");
+};
+base.ClassDeclaration = base.ClassExpression = function (node, st, c) { return c(node, st, "Class"); };
+base.Class = function (node, st, c) {
+  if (node.id) { c(node.id, st, "Pattern"); }
+  if (node.superClass) { c(node.superClass, st, "Expression"); }
+  c(node.body, st);
+};
+base.ClassBody = function (node, st, c) {
+  for (var i = 0, list = node.body; i < list.length; i += 1)
+    {
+    var elt = list[i];
+
+    c(elt, st);
+  }
+};
+base.MethodDefinition = base.Property = function (node, st, c) {
+  if (node.computed) { c(node.key, st, "Expression"); }
+  c(node.value, st, "Expression");
+};
+
+export { ancestor, base, findNodeAfter, findNodeAround, findNodeAt, findNodeBefore, full, fullAncestor, make, recursive, simple };

node_modules/acorn-walk/package.json

@@ -0,0 +1,67 @@
+{
+  "_args": [
+    [
+      "acorn-walk@7.2.0",
+      "/d"
+    ]
+  ],
+  "_from": "acorn-walk@7.2.0",
+  "_id": "acorn-walk@7.2.0",
+  "_inBundle": false,
+  "_integrity": "sha512-OPdCF6GsMIP+Az+aWfAAOEt2/+iVDKE7oy6lJ098aoe59oAmK76qV6Gw60SbZ8jHuG2wH058GF4pLFbYamYrVA==",
+  "_location": "/acorn-walk",
+  "_phantomChildren": {},
+  "_requested": {
+    "type": "version",
+    "registry": true,
+    "raw": "acorn-walk@7.2.0",
+    "name": "acorn-walk",
+    "escapedName": "acorn-walk",
+    "rawSpec": "7.2.0",
+    "saveSpec": null,
+    "fetchSpec": "7.2.0"
+  },
+  "_requiredBy": [
+    "/acorn-node"
+  ],
+  "_resolved": "https://registry.npmjs.org/acorn-walk/-/acorn-walk-7.2.0.tgz",
+  "_spec": "7.2.0",
+  "_where": "/d",
+  "bugs": {
+    "url": "https://github.com/acornjs/acorn/issues"
+  },
+  "description": "ECMAScript (ESTree) AST walker",
+  "engines": {
+    "node": ">=0.4.0"
+  },
+  "homepage": "https://github.com/acornjs/acorn",
+  "license": "MIT",
+  "main": "dist/walk.js",
+  "maintainers": [
+    {
+      "name": "Marijn Haverbeke",
+      "email": "marijnh@gmail.com",
+      "url": "https://marijnhaverbeke.nl"
+    },
+    {
+      "name": "Ingvar Stepanyan",
+      "email": "me@rreverser.com",
+      "url": "https://rreverser.com/"
+    },
+    {
+      "name": "Adrian Heine",
+      "url": "http://adrianheine.de"
+    }
+  ],
+  "module": "dist/walk.mjs",
+  "name": "acorn-walk",
+  "repository": {
+    "type": "git",
+    "url": "git+https://github.com/acornjs/acorn.git"
+  },
+  "scripts": {
+    "prepare": "cd ..; npm run build:walk"
+  },
+  "types": "dist/walk.d.ts",
+  "version": "7.2.0"
+}