$

node_modules/eslint-scope/lib/definition.js

@@ -0,0 +1,86 @@
+/*
+  Copyright (C) 2015 Yusuke Suzuki <utatane.tea@gmail.com>
+
+  Redistribution and use in source and binary forms, with or without
+  modification, are permitted provided that the following conditions are met:
+
+    * Redistributions of source code must retain the above copyright
+      notice, this list of conditions and the following disclaimer.
+    * Redistributions in binary form must reproduce the above copyright
+      notice, this list of conditions and the following disclaimer in the
+      documentation and/or other materials provided with the distribution.
+
+  THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
+  AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+  IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+  ARE DISCLAIMED. IN NO EVENT SHALL <COPYRIGHT HOLDER> BE LIABLE FOR ANY
+  DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
+  (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
+  LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
+  ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+  (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
+  THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+*/
+"use strict";
+
+const Variable = require("./variable");
+
+/**
+ * @class Definition
+ */
+class Definition {
+    constructor(type, name, node, parent, index, kind) {
+
+        /**
+         * @member {String} Definition#type - type of the occurrence (e.g. "Parameter", "Variable", ...).
+         */
+        this.type = type;
+
+        /**
+         * @member {espree.Identifier} Definition#name - the identifier AST node of the occurrence.
+         */
+        this.name = name;
+
+        /**
+         * @member {espree.Node} Definition#node - the enclosing node of the identifier.
+         */
+        this.node = node;
+
+        /**
+         * @member {espree.Node?} Definition#parent - the enclosing statement node of the identifier.
+         */
+        this.parent = parent;
+
+        /**
+         * @member {Number?} Definition#index - the index in the declaration statement.
+         */
+        this.index = index;
+
+        /**
+         * @member {String?} Definition#kind - the kind of the declaration statement.
+         */
+        this.kind = kind;
+    }
+}
+
+/**
+ * @class ParameterDefinition
+ */
+class ParameterDefinition extends Definition {
+    constructor(name, node, index, rest) {
+        super(Variable.Parameter, name, node, null, index, null);
+
+        /**
+         * Whether the parameter definition is a part of a rest parameter.
+         * @member {boolean} ParameterDefinition#rest
+         */
+        this.rest = rest;
+    }
+}
+
+module.exports = {
+    ParameterDefinition,
+    Definition
+};
+
+/* vim: set sw=4 ts=4 et tw=80 : */

node_modules/eslint-scope/lib/index.js

@@ -0,0 +1,165 @@
+/*
+  Copyright (C) 2012-2014 Yusuke Suzuki <utatane.tea@gmail.com>
+  Copyright (C) 2013 Alex Seville <hi@alexanderseville.com>
+  Copyright (C) 2014 Thiago de Arruda <tpadilha84@gmail.com>
+
+  Redistribution and use in source and binary forms, with or without
+  modification, are permitted provided that the following conditions are met:
+
+    * Redistributions of source code must retain the above copyright
+      notice, this list of conditions and the following disclaimer.
+    * Redistributions in binary form must reproduce the above copyright
+      notice, this list of conditions and the following disclaimer in the
+      documentation and/or other materials provided with the distribution.
+
+  THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
+  AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+  IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+  ARE DISCLAIMED. IN NO EVENT SHALL <COPYRIGHT HOLDER> BE LIABLE FOR ANY
+  DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
+  (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
+  LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
+  ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+  (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
+  THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+*/
+
+/**
+ * Escope (<a href="http://github.com/estools/escope">escope</a>) is an <a
+ * href="http://www.ecma-international.org/publications/standards/Ecma-262.htm">ECMAScript</a>
+ * scope analyzer extracted from the <a
+ * href="http://github.com/estools/esmangle">esmangle project</a/>.
+ * <p>
+ * <em>escope</em> finds lexical scopes in a source program, i.e. areas of that
+ * program where different occurrences of the same identifier refer to the same
+ * variable. With each scope the contained variables are collected, and each
+ * identifier reference in code is linked to its corresponding variable (if
+ * possible).
+ * <p>
+ * <em>escope</em> works on a syntax tree of the parsed source code which has
+ * to adhere to the <a
+ * href="https://developer.mozilla.org/en-US/docs/SpiderMonkey/Parser_API">
+ * Mozilla Parser API</a>. E.g. <a href="https://github.com/eslint/espree">espree</a> is a parser
+ * that produces such syntax trees.
+ * <p>
+ * The main interface is the {@link analyze} function.
+ * @module escope
+ */
+"use strict";
+
+/* eslint no-underscore-dangle: ["error", { "allow": ["__currentScope"] }] */
+
+const assert = require("assert");
+
+const ScopeManager = require("./scope-manager");
+const Referencer = require("./referencer");
+const Reference = require("./reference");
+const Variable = require("./variable");
+const Scope = require("./scope").Scope;
+const version = require("../package.json").version;
+
+/**
+ * Set the default options
+ * @returns {Object} options
+ */
+function defaultOptions() {
+    return {
+        optimistic: false,
+        directive: false,
+        nodejsScope: false,
+        impliedStrict: false,
+        sourceType: "script", // one of ['script', 'module']
+        ecmaVersion: 5,
+        childVisitorKeys: null,
+        fallback: "iteration"
+    };
+}
+
+/**
+ * Preform deep update on option object
+ * @param {Object} target - Options
+ * @param {Object} override - Updates
+ * @returns {Object} Updated options
+ */
+function updateDeeply(target, override) {
+
+    /**
+     * Is hash object
+     * @param {Object} value - Test value
+     * @returns {boolean} Result
+     */
+    function isHashObject(value) {
+        return typeof value === "object" && value instanceof Object && !(value instanceof Array) && !(value instanceof RegExp);
+    }
+
+    for (const key in override) {
+        if (Object.prototype.hasOwnProperty.call(override, key)) {
+            const val = override[key];
+
+            if (isHashObject(val)) {
+                if (isHashObject(target[key])) {
+                    updateDeeply(target[key], val);
+                } else {
+                    target[key] = updateDeeply({}, val);
+                }
+            } else {
+                target[key] = val;
+            }
+        }
+    }
+    return target;
+}
+
+/**
+ * Main interface function. Takes an Espree syntax tree and returns the
+ * analyzed scopes.
+ * @function analyze
+ * @param {espree.Tree} tree - Abstract Syntax Tree
+ * @param {Object} providedOptions - Options that tailor the scope analysis
+ * @param {boolean} [providedOptions.optimistic=false] - the optimistic flag
+ * @param {boolean} [providedOptions.directive=false]- the directive flag
+ * @param {boolean} [providedOptions.ignoreEval=false]- whether to check 'eval()' calls
+ * @param {boolean} [providedOptions.nodejsScope=false]- whether the whole
+ * script is executed under node.js environment. When enabled, escope adds
+ * a function scope immediately following the global scope.
+ * @param {boolean} [providedOptions.impliedStrict=false]- implied strict mode
+ * (if ecmaVersion >= 5).
+ * @param {string} [providedOptions.sourceType='script']- the source type of the script. one of 'script' and 'module'
+ * @param {number} [providedOptions.ecmaVersion=5]- which ECMAScript version is considered
+ * @param {Object} [providedOptions.childVisitorKeys=null] - Additional known visitor keys. See [esrecurse](https://github.com/estools/esrecurse)'s the `childVisitorKeys` option.
+ * @param {string} [providedOptions.fallback='iteration'] - A kind of the fallback in order to encounter with unknown node. See [esrecurse](https://github.com/estools/esrecurse)'s the `fallback` option.
+ * @returns {ScopeManager} ScopeManager
+ */
+function analyze(tree, providedOptions) {
+    const options = updateDeeply(defaultOptions(), providedOptions);
+    const scopeManager = new ScopeManager(options);
+    const referencer = new Referencer(options, scopeManager);
+
+    referencer.visit(tree);
+
+    assert(scopeManager.__currentScope === null, "currentScope should be null.");
+
+    return scopeManager;
+}
+
+module.exports = {
+
+    /** @name module:escope.version */
+    version,
+
+    /** @name module:escope.Reference */
+    Reference,
+
+    /** @name module:escope.Variable */
+    Variable,
+
+    /** @name module:escope.Scope */
+    Scope,
+
+    /** @name module:escope.ScopeManager */
+    ScopeManager,
+    analyze
+};
+
+
+/* vim: set sw=4 ts=4 et tw=80 : */

node_modules/eslint-scope/lib/pattern-visitor.js

@@ -0,0 +1,152 @@
+/*
+  Copyright (C) 2015 Yusuke Suzuki <utatane.tea@gmail.com>
+
+  Redistribution and use in source and binary forms, with or without
+  modification, are permitted provided that the following conditions are met:
+
+    * Redistributions of source code must retain the above copyright
+      notice, this list of conditions and the following disclaimer.
+    * Redistributions in binary form must reproduce the above copyright
+      notice, this list of conditions and the following disclaimer in the
+      documentation and/or other materials provided with the distribution.
+
+  THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
+  AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+  IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+  ARE DISCLAIMED. IN NO EVENT SHALL <COPYRIGHT HOLDER> BE LIABLE FOR ANY
+  DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
+  (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
+  LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
+  ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+  (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
+  THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+*/
+"use strict";
+
+/* eslint-disable no-undefined */
+
+const Syntax = require("estraverse").Syntax;
+const esrecurse = require("esrecurse");
+
+/**
+ * Get last array element
+ * @param {array} xs - array
+ * @returns {any} Last elment
+ */
+function getLast(xs) {
+    return xs[xs.length - 1] || null;
+}
+
+class PatternVisitor extends esrecurse.Visitor {
+    static isPattern(node) {
+        const nodeType = node.type;
+
+        return (
+            nodeType === Syntax.Identifier ||
+            nodeType === Syntax.ObjectPattern ||
+            nodeType === Syntax.ArrayPattern ||
+            nodeType === Syntax.SpreadElement ||
+            nodeType === Syntax.RestElement ||
+            nodeType === Syntax.AssignmentPattern
+        );
+    }
+
+    constructor(options, rootPattern, callback) {
+        super(null, options);
+        this.rootPattern = rootPattern;
+        this.callback = callback;
+        this.assignments = [];
+        this.rightHandNodes = [];
+        this.restElements = [];
+    }
+
+    Identifier(pattern) {
+        const lastRestElement = getLast(this.restElements);
+
+        this.callback(pattern, {
+            topLevel: pattern === this.rootPattern,
+            rest: lastRestElement !== null && lastRestElement !== undefined && lastRestElement.argument === pattern,
+            assignments: this.assignments
+        });
+    }
+
+    Property(property) {
+
+        // Computed property's key is a right hand node.
+        if (property.computed) {
+            this.rightHandNodes.push(property.key);
+        }
+
+        // If it's shorthand, its key is same as its value.
+        // If it's shorthand and has its default value, its key is same as its value.left (the value is AssignmentPattern).
+        // If it's not shorthand, the name of new variable is its value's.
+        this.visit(property.value);
+    }
+
+    ArrayPattern(pattern) {
+        for (let i = 0, iz = pattern.elements.length; i < iz; ++i) {
+            const element = pattern.elements[i];
+
+            this.visit(element);
+        }
+    }
+
+    AssignmentPattern(pattern) {
+        this.assignments.push(pattern);
+        this.visit(pattern.left);
+        this.rightHandNodes.push(pattern.right);
+        this.assignments.pop();
+    }
+
+    RestElement(pattern) {
+        this.restElements.push(pattern);
+        this.visit(pattern.argument);
+        this.restElements.pop();
+    }
+
+    MemberExpression(node) {
+
+        // Computed property's key is a right hand node.
+        if (node.computed) {
+            this.rightHandNodes.push(node.property);
+        }
+
+        // the object is only read, write to its property.
+        this.rightHandNodes.push(node.object);
+    }
+
+    //
+    // ForInStatement.left and AssignmentExpression.left are LeftHandSideExpression.
+    // By spec, LeftHandSideExpression is Pattern or MemberExpression.
+    //   (see also: https://github.com/estree/estree/pull/20#issuecomment-74584758)
+    // But espree 2.0 parses to ArrayExpression, ObjectExpression, etc...
+    //
+
+    SpreadElement(node) {
+        this.visit(node.argument);
+    }
+
+    ArrayExpression(node) {
+        node.elements.forEach(this.visit, this);
+    }
+
+    AssignmentExpression(node) {
+        this.assignments.push(node);
+        this.visit(node.left);
+        this.rightHandNodes.push(node.right);
+        this.assignments.pop();
+    }
+
+    CallExpression(node) {
+
+        // arguments are right hand nodes.
+        node.arguments.forEach(a => {
+            this.rightHandNodes.push(a);
+        });
+        this.visit(node.callee);
+    }
+}
+
+module.exports = PatternVisitor;
+
+/* vim: set sw=4 ts=4 et tw=80 : */

node_modules/eslint-scope/lib/reference.js

@@ -0,0 +1,167 @@
+/*
+  Copyright (C) 2015 Yusuke Suzuki <utatane.tea@gmail.com>
+
+  Redistribution and use in source and binary forms, with or without
+  modification, are permitted provided that the following conditions are met:
+
+    * Redistributions of source code must retain the above copyright
+      notice, this list of conditions and the following disclaimer.
+    * Redistributions in binary form must reproduce the above copyright
+      notice, this list of conditions and the following disclaimer in the
+      documentation and/or other materials provided with the distribution.
+
+  THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
+  AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+  IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+  ARE DISCLAIMED. IN NO EVENT SHALL <COPYRIGHT HOLDER> BE LIABLE FOR ANY
+  DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
+  (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
+  LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
+  ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+  (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
+  THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+*/
+"use strict";
+
+const READ = 0x1;
+const WRITE = 0x2;
+const RW = READ | WRITE;
+
+/**
+ * A Reference represents a single occurrence of an identifier in code.
+ * @class Reference
+ */
+class Reference {
+    constructor(ident, scope, flag, writeExpr, maybeImplicitGlobal, partial, init) {
+
+        /**
+         * Identifier syntax node.
+         * @member {espreeIdentifier} Reference#identifier
+         */
+        this.identifier = ident;
+
+        /**
+         * Reference to the enclosing Scope.
+         * @member {Scope} Reference#from
+         */
+        this.from = scope;
+
+        /**
+         * Whether the reference comes from a dynamic scope (such as 'eval',
+         * 'with', etc.), and may be trapped by dynamic scopes.
+         * @member {boolean} Reference#tainted
+         */
+        this.tainted = false;
+
+        /**
+         * The variable this reference is resolved with.
+         * @member {Variable} Reference#resolved
+         */
+        this.resolved = null;
+
+        /**
+         * The read-write mode of the reference. (Value is one of {@link
+         * Reference.READ}, {@link Reference.RW}, {@link Reference.WRITE}).
+         * @member {number} Reference#flag
+         * @private
+         */
+        this.flag = flag;
+        if (this.isWrite()) {
+
+            /**
+             * If reference is writeable, this is the tree being written to it.
+             * @member {espreeNode} Reference#writeExpr
+             */
+            this.writeExpr = writeExpr;
+
+            /**
+             * Whether the Reference might refer to a partial value of writeExpr.
+             * @member {boolean} Reference#partial
+             */
+            this.partial = partial;
+
+            /**
+             * Whether the Reference is to write of initialization.
+             * @member {boolean} Reference#init
+             */
+            this.init = init;
+        }
+        this.__maybeImplicitGlobal = maybeImplicitGlobal;
+    }
+
+    /**
+     * Whether the reference is static.
+     * @method Reference#isStatic
+     * @returns {boolean} static
+     */
+    isStatic() {
+        return !this.tainted && this.resolved && this.resolved.scope.isStatic();
+    }
+
+    /**
+     * Whether the reference is writeable.
+     * @method Reference#isWrite
+     * @returns {boolean} write
+     */
+    isWrite() {
+        return !!(this.flag & Reference.WRITE);
+    }
+
+    /**
+     * Whether the reference is readable.
+     * @method Reference#isRead
+     * @returns {boolean} read
+     */
+    isRead() {
+        return !!(this.flag & Reference.READ);
+    }
+
+    /**
+     * Whether the reference is read-only.
+     * @method Reference#isReadOnly
+     * @returns {boolean} read only
+     */
+    isReadOnly() {
+        return this.flag === Reference.READ;
+    }
+
+    /**
+     * Whether the reference is write-only.
+     * @method Reference#isWriteOnly
+     * @returns {boolean} write only
+     */
+    isWriteOnly() {
+        return this.flag === Reference.WRITE;
+    }
+
+    /**
+     * Whether the reference is read-write.
+     * @method Reference#isReadWrite
+     * @returns {boolean} read write
+     */
+    isReadWrite() {
+        return this.flag === Reference.RW;
+    }
+}
+
+/**
+ * @constant Reference.READ
+ * @private
+ */
+Reference.READ = READ;
+
+/**
+ * @constant Reference.WRITE
+ * @private
+ */
+Reference.WRITE = WRITE;
+
+/**
+ * @constant Reference.RW
+ * @private
+ */
+Reference.RW = RW;
+
+module.exports = Reference;
+
+/* vim: set sw=4 ts=4 et tw=80 : */

node_modules/eslint-scope/lib/scope-manager.js

@@ -0,0 +1,247 @@
+/*
+  Copyright (C) 2015 Yusuke Suzuki <utatane.tea@gmail.com>
+
+  Redistribution and use in source and binary forms, with or without
+  modification, are permitted provided that the following conditions are met:
+
+    * Redistributions of source code must retain the above copyright
+      notice, this list of conditions and the following disclaimer.
+    * Redistributions in binary form must reproduce the above copyright
+      notice, this list of conditions and the following disclaimer in the
+      documentation and/or other materials provided with the distribution.
+
+  THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
+  AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+  IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+  ARE DISCLAIMED. IN NO EVENT SHALL <COPYRIGHT HOLDER> BE LIABLE FOR ANY
+  DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
+  (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
+  LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
+  ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+  (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
+  THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+*/
+"use strict";
+
+/* eslint-disable no-underscore-dangle */
+
+const Scope = require("./scope");
+const assert = require("assert");
+
+const GlobalScope = Scope.GlobalScope;
+const CatchScope = Scope.CatchScope;
+const WithScope = Scope.WithScope;
+const ModuleScope = Scope.ModuleScope;
+const ClassScope = Scope.ClassScope;
+const SwitchScope = Scope.SwitchScope;
+const FunctionScope = Scope.FunctionScope;
+const ForScope = Scope.ForScope;
+const FunctionExpressionNameScope = Scope.FunctionExpressionNameScope;
+const BlockScope = Scope.BlockScope;
+
+/**
+ * @class ScopeManager
+ */
+class ScopeManager {
+    constructor(options) {
+        this.scopes = [];
+        this.globalScope = null;
+        this.__nodeToScope = new WeakMap();
+        this.__currentScope = null;
+        this.__options = options;
+        this.__declaredVariables = new WeakMap();
+    }
+
+    __useDirective() {
+        return this.__options.directive;
+    }
+
+    __isOptimistic() {
+        return this.__options.optimistic;
+    }
+
+    __ignoreEval() {
+        return this.__options.ignoreEval;
+    }
+
+    __isNodejsScope() {
+        return this.__options.nodejsScope;
+    }
+
+    isModule() {
+        return this.__options.sourceType === "module";
+    }
+
+    isImpliedStrict() {
+        return this.__options.impliedStrict;
+    }
+
+    isStrictModeSupported() {
+        return this.__options.ecmaVersion >= 5;
+    }
+
+    // Returns appropriate scope for this node.
+    __get(node) {
+        return this.__nodeToScope.get(node);
+    }
+
+    /**
+     * Get variables that are declared by the node.
+     *
+     * "are declared by the node" means the node is same as `Variable.defs[].node` or `Variable.defs[].parent`.
+     * If the node declares nothing, this method returns an empty array.
+     * CAUTION: This API is experimental. See https://github.com/estools/escope/pull/69 for more details.
+     *
+     * @param {Espree.Node} node - a node to get.
+     * @returns {Variable[]} variables that declared by the node.
+     */
+    getDeclaredVariables(node) {
+        return this.__declaredVariables.get(node) || [];
+    }
+
+    /**
+     * acquire scope from node.
+     * @method ScopeManager#acquire
+     * @param {Espree.Node} node - node for the acquired scope.
+     * @param {boolean=} inner - look up the most inner scope, default value is false.
+     * @returns {Scope?} Scope from node
+     */
+    acquire(node, inner) {
+
+        /**
+         * predicate
+         * @param {Scope} testScope - scope to test
+         * @returns {boolean} predicate
+         */
+        function predicate(testScope) {
+            if (testScope.type === "function" && testScope.functionExpressionScope) {
+                return false;
+            }
+            return true;
+        }
+
+        const scopes = this.__get(node);
+
+        if (!scopes || scopes.length === 0) {
+            return null;
+        }
+
+        // Heuristic selection from all scopes.
+        // If you would like to get all scopes, please use ScopeManager#acquireAll.
+        if (scopes.length === 1) {
+            return scopes[0];
+        }
+
+        if (inner) {
+            for (let i = scopes.length - 1; i >= 0; --i) {
+                const scope = scopes[i];
+
+                if (predicate(scope)) {
+                    return scope;
+                }
+            }
+        } else {
+            for (let i = 0, iz = scopes.length; i < iz; ++i) {
+                const scope = scopes[i];
+
+                if (predicate(scope)) {
+                    return scope;
+                }
+            }
+        }
+
+        return null;
+    }
+
+    /**
+     * acquire all scopes from node.
+     * @method ScopeManager#acquireAll
+     * @param {Espree.Node} node - node for the acquired scope.
+     * @returns {Scopes?} Scope array
+     */
+    acquireAll(node) {
+        return this.__get(node);
+    }
+
+    /**
+     * release the node.
+     * @method ScopeManager#release
+     * @param {Espree.Node} node - releasing node.
+     * @param {boolean=} inner - look up the most inner scope, default value is false.
+     * @returns {Scope?} upper scope for the node.
+     */
+    release(node, inner) {
+        const scopes = this.__get(node);
+
+        if (scopes && scopes.length) {
+            const scope = scopes[0].upper;
+
+            if (!scope) {
+                return null;
+            }
+            return this.acquire(scope.block, inner);
+        }
+        return null;
+    }
+
+    attach() { } // eslint-disable-line class-methods-use-this
+
+    detach() { } // eslint-disable-line class-methods-use-this
+
+    __nestScope(scope) {
+        if (scope instanceof GlobalScope) {
+            assert(this.__currentScope === null);
+            this.globalScope = scope;
+        }
+        this.__currentScope = scope;
+        return scope;
+    }
+
+    __nestGlobalScope(node) {
+        return this.__nestScope(new GlobalScope(this, node));
+    }
+
+    __nestBlockScope(node) {
+        return this.__nestScope(new BlockScope(this, this.__currentScope, node));
+    }
+
+    __nestFunctionScope(node, isMethodDefinition) {
+        return this.__nestScope(new FunctionScope(this, this.__currentScope, node, isMethodDefinition));
+    }
+
+    __nestForScope(node) {
+        return this.__nestScope(new ForScope(this, this.__currentScope, node));
+    }
+
+    __nestCatchScope(node) {
+        return this.__nestScope(new CatchScope(this, this.__currentScope, node));
+    }
+
+    __nestWithScope(node) {
+        return this.__nestScope(new WithScope(this, this.__currentScope, node));
+    }
+
+    __nestClassScope(node) {
+        return this.__nestScope(new ClassScope(this, this.__currentScope, node));
+    }
+
+    __nestSwitchScope(node) {
+        return this.__nestScope(new SwitchScope(this, this.__currentScope, node));
+    }
+
+    __nestModuleScope(node) {
+        return this.__nestScope(new ModuleScope(this, this.__currentScope, node));
+    }
+
+    __nestFunctionExpressionNameScope(node) {
+        return this.__nestScope(new FunctionExpressionNameScope(this, this.__currentScope, node));
+    }
+
+    __isES6() {
+        return this.__options.ecmaVersion >= 6;
+    }
+}
+
+module.exports = ScopeManager;
+
+/* vim: set sw=4 ts=4 et tw=80 : */

node_modules/eslint-scope/lib/variable.js

@@ -0,0 +1,88 @@
+/*
+  Copyright (C) 2015 Yusuke Suzuki <utatane.tea@gmail.com>
+
+  Redistribution and use in source and binary forms, with or without
+  modification, are permitted provided that the following conditions are met:
+
+    * Redistributions of source code must retain the above copyright
+      notice, this list of conditions and the following disclaimer.
+    * Redistributions in binary form must reproduce the above copyright
+      notice, this list of conditions and the following disclaimer in the
+      documentation and/or other materials provided with the distribution.
+
+  THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
+  AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+  IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+  ARE DISCLAIMED. IN NO EVENT SHALL <COPYRIGHT HOLDER> BE LIABLE FOR ANY
+  DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
+  (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
+  LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
+  ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+  (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
+  THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+*/
+"use strict";
+
+/**
+ * A Variable represents a locally scoped identifier. These include arguments to
+ * functions.
+ * @class Variable
+ */
+class Variable {
+    constructor(name, scope) {
+
+        /**
+         * The variable name, as given in the source code.
+         * @member {String} Variable#name
+         */
+        this.name = name;
+
+        /**
+         * List of defining occurrences of this variable (like in 'var ...'
+         * statements or as parameter), as AST nodes.
+         * @member {espree.Identifier[]} Variable#identifiers
+         */
+        this.identifiers = [];
+
+        /**
+         * List of {@link Reference|references} of this variable (excluding parameter entries)
+         * in its defining scope and all nested scopes. For defining
+         * occurrences only see {@link Variable#defs}.
+         * @member {Reference[]} Variable#references
+         */
+        this.references = [];
+
+        /**
+         * List of defining occurrences of this variable (like in 'var ...'
+         * statements or as parameter), as custom objects.
+         * @member {Definition[]} Variable#defs
+         */
+        this.defs = [];
+
+        this.tainted = false;
+
+        /**
+         * Whether this is a stack variable.
+         * @member {boolean} Variable#stack
+         */
+        this.stack = true;
+
+        /**
+         * Reference to the enclosing Scope.
+         * @member {Scope} Variable#scope
+         */
+        this.scope = scope;
+    }
+}
+
+Variable.CatchClause = "CatchClause";
+Variable.Parameter = "Parameter";
+Variable.FunctionName = "FunctionName";
+Variable.ClassName = "ClassName";
+Variable.Variable = "Variable";
+Variable.ImportBinding = "ImportBinding";
+Variable.ImplicitGlobalVariable = "ImplicitGlobalVariable";
+
+module.exports = Variable;
+
+/* vim: set sw=4 ts=4 et tw=80 : */