create-next-flask/dist/templates/default/frontend/node_modules/eslint-plugin-react-hooks/cjs/eslint-plugin-react-hooks.development.js

Create a Next + Flask app

/**
 * @license React
 * eslint-plugin-react-hooks.development.js
 *
 * Copyright (c) Facebook, Inc. and its affiliates.
 *
 * This source code is licensed under the MIT license found in the
 * LICENSE file in the root directory of this source tree.
 */

'use strict';

if (process.env.NODE_ENV !== "production") {
  (function() {
'use strict';

function _unsupportedIterableToArray(o, minLen) {
  if (!o) return;
  if (typeof o === "string") return _arrayLikeToArray(o, minLen);
  var n = Object.prototype.toString.call(o).slice(8, -1);
  if (n === "Object" && o.constructor) n = o.constructor.name;
  if (n === "Map" || n === "Set") return Array.from(o);
  if (n === "Arguments" || /^(?:Ui|I)nt(?:8|16|32)(?:Clamped)?Array$/.test(n)) return _arrayLikeToArray(o, minLen);
}

function _arrayLikeToArray(arr, len) {
  if (len == null || len > arr.length) len = arr.length;

  for (var i = 0, arr2 = new Array(len); i < len; i++) arr2[i] = arr[i];

  return arr2;
}

function _createForOfIteratorHelper(o, allowArrayLike) {
  var it;

  if (typeof Symbol === "undefined" || o[Symbol.iterator] == null) {
    if (Array.isArray(o) || (it = _unsupportedIterableToArray(o)) || allowArrayLike && o && typeof o.length === "number") {
      if (it) o = it;
      var i = 0;

      var F = function () {};

      return {
        s: F,
        n: function () {
          if (i >= o.length) return {
            done: true
          };
          return {
            done: false,
            value: o[i++]
          };
        },
        e: function (e) {
          throw e;
        },
        f: F
      };
    }

    throw new TypeError("Invalid attempt to iterate non-iterable instance.\nIn order to be iterable, non-array objects must have a [Symbol.iterator]() method.");
  }

  var normalCompletion = true,
      didErr = false,
      err;
  return {
    s: function () {
      it = o[Symbol.iterator]();
    },
    n: function () {
      var step = it.next();
      normalCompletion = step.done;
      return step;
    },
    e: function (e) {
      didErr = true;
      err = e;
    },
    f: function () {
      try {
        if (!normalCompletion && it.return != null) it.return();
      } finally {
        if (didErr) throw err;
      }
    }
  };
}

/* global BigInt */

function isHookName(s) {
  return /^use[A-Z0-9].*$/.test(s);
}
/**
 * We consider hooks to be a hook name identifier or a member expression
 * containing a hook name.
 */


function isHook(node) {
  if (node.type === 'Identifier') {
    return isHookName(node.name);
  } else if (node.type === 'MemberExpression' && !node.computed && isHook(node.property)) {
    var obj = node.object;
    var isPascalCaseNameSpace = /^[A-Z].*/;
    return obj.type === 'Identifier' && isPascalCaseNameSpace.test(obj.name);
  } else {
    return false;
  }
}
/**
 * Checks if the node is a React component name. React component names must
 * always start with a non-lowercase letter. So `MyComponent` or `_MyComponent`
 * are valid component names for instance.
 */


function isComponentName(node) {
  if (node.type === 'Identifier') {
    return !/^[a-z]/.test(node.name);
  } else {
    return false;
  }
}

function isReactFunction(node, functionName) {
  return node.name === functionName || node.type === 'MemberExpression' && node.object.name === 'React' && node.property.name === functionName;
}
/**
 * Checks if the node is a callback argument of forwardRef. This render function
 * should follow the rules of hooks.
 */


function isForwardRefCallback(node) {
  return !!(node.parent && node.parent.callee && isReactFunction(node.parent.callee, 'forwardRef'));
}
/**
 * Checks if the node is a callback argument of React.memo. This anonymous
 * functional component should follow the rules of hooks.
 */


function isMemoCallback(node) {
  return !!(node.parent && node.parent.callee && isReactFunction(node.parent.callee, 'memo'));
}

function isInsideComponentOrHook(node) {
  while (node) {
    var functionName = getFunctionName(node);

    if (functionName) {
      if (isComponentName(functionName) || isHook(functionName)) {
        return true;
      }
    }

    if (isForwardRefCallback(node) || isMemoCallback(node)) {
      return true;
    }

    node = node.parent;
  }

  return false;
}

var RulesOfHooks = {
  meta: {
    type: 'problem',
    docs: {
      description: 'enforces the Rules of Hooks',
      recommended: true,
      url: 'https://reactjs.org/docs/hooks-rules.html'
    }
  },
  create: function (context) {
    var codePathReactHooksMapStack = [];
    var codePathSegmentStack = [];
    return {
      // Maintain code segment path stack as we traverse.
      onCodePathSegmentStart: function (segment) {
        return codePathSegmentStack.push(segment);
      },
      onCodePathSegmentEnd: function () {
        return codePathSegmentStack.pop();
      },
      // Maintain code path stack as we traverse.
      onCodePathStart: function () {
        return codePathReactHooksMapStack.push(new Map());
      },
      // Process our code path.
      //
      // Everything is ok if all React Hooks are both reachable from the initial
      // segment and reachable from every final segment.
      onCodePathEnd: function (codePath, codePathNode) {
        var reactHooksMap = codePathReactHooksMapStack.pop();

        if (reactHooksMap.size === 0) {
          return;
        } // All of the segments which are cyclic are recorded in this set.


        var cyclic = new Set();
        /**
         * Count the number of code paths from the start of the function to this
         * segment. For example:
         *
         * ```js
         * function MyComponent() {
         *   if (condition) {
         *     // Segment 1
         *   } else {
         *     // Segment 2
         *   }
         *   // Segment 3
         * }
         * ```
         *
         * Segments 1 and 2 have one path to the beginning of `MyComponent` and
         * segment 3 has two paths to the beginning of `MyComponent` since we
         * could have either taken the path of segment 1 or segment 2.
         *
         * Populates `cyclic` with cyclic segments.
         */

        function countPathsFromStart(segment, pathHistory) {
          var cache = countPathsFromStart.cache;
          var paths = cache.get(segment.id);
          var pathList = new Set(pathHistory); // If `pathList` includes the current segment then we've found a cycle!
          // We need to fill `cyclic` with all segments inside cycle

          if (pathList.has(segment.id)) {
            var pathArray = [].concat(pathList);
            var cyclicSegments = pathArray.slice(pathArray.indexOf(segment.id) + 1);

            var _iterator = _createForOfIteratorHelper(cyclicSegments),
                _step;

            try {
              for (_iterator.s(); !(_step = _iterator.n()).done;) {
                var cyclicSegment = _step.value;
                cyclic.add(cyclicSegment);
              }
            } catch (err) {
              _iterator.e(err);
            } finally {
              _iterator.f();
            }

            return BigInt('0');
          } // add the current segment to pathList


          pathList.add(segment.id); // We have a cached `paths`. Return it.

          if (paths !== undefined) {
            return paths;
          }

          if (codePath.thrownSegments.includes(segment)) {
            paths = BigInt('0');
          } else if (segment.prevSegments.length === 0) {
            paths = BigInt('1');
          } else {
            paths = BigInt('0');

            var _iterator2 = _createForOfIteratorHelper(segment.prevSegments),
                _step2;

            try {
              for (_iterator2.s(); !(_step2 = _iterator2.n()).done;) {
                var prevSegment = _step2.value;
                paths += countPathsFromStart(prevSegment, pathList);
              }
            } catch (err) {
              _iterator2.e(err);
            } finally {
              _iterator2.f();
            }
          } // If our segment is reachable then there should be at least one path
          // to it from the start of our code path.


          if (segment.reachable && paths === BigInt('0')) {
            cache.delete(segment.id);
          } else {
            cache.set(segment.id, paths);
          }

          return paths;
        }
        /**
         * Count the number of code paths from this segment to the end of the
         * function. For example:
         *
         * ```js
         * function MyComponent() {
         *   // Segment 1
         *   if (condition) {
         *     // Segment 2
         *   } else {
         *     // Segment 3
         *   }
         * }
         * ```
         *
         * Segments 2 and 3 have one path to the end of `MyComponent` and
         * segment 1 has two paths to the end of `MyComponent` since we could
         * either take the path of segment 1 or segment 2.
         *
         * Populates `cyclic` with cyclic segments.
         */


        function countPathsToEnd(segment, pathHistory) {
          var cache = countPathsToEnd.cache;
          var paths = cache.get(segment.id);
          var pathList = new Set(pathHistory); // If `pathList` includes the current segment then we've found a cycle!
          // We need to fill `cyclic` with all segments inside cycle

          if (pathList.has(segment.id)) {
            var pathArray = Array.from(pathList);
            var cyclicSegments = pathArray.slice(pathArray.indexOf(segment.id) + 1);

            var _iterator3 = _createForOfIteratorHelper(cyclicSegments),
                _step3;

            try {
              for (_iterator3.s(); !(_step3 = _iterator3.n()).done;) {
                var cyclicSegment = _step3.value;
                cyclic.add(cyclicSegment);
              }
            } catch (err) {
              _iterator3.e(err);
            } finally {
              _iterator3.f();
            }

            return BigInt('0');
          } // add the current segment to pathList


          pathList.add(segment.id); // We have a cached `paths`. Return it.

          if (paths !== undefined) {
            return paths;
          }

          if (codePath.thrownSegments.includes(segment)) {
            paths = BigInt('0');
          } else if (segment.nextSegments.length === 0) {
            paths = BigInt('1');
          } else {
            paths = BigInt('0');

            var _iterator4 = _createForOfIteratorHelper(segment.nextSegments),
                _step4;

            try {
              for (_iterator4.s(); !(_step4 = _iterator4.n()).done;) {
                var nextSegment = _step4.value;
                paths += countPathsToEnd(nextSegment, pathList);
              }
            } catch (err) {
              _iterator4.e(err);
            } finally {
              _iterator4.f();
            }
          }

          cache.set(segment.id, paths);
          return paths;
        }
        /**
         * Gets the shortest path length to the start of a code path.
         * For example:
         *
         * ```js
         * function MyComponent() {
         *   if (condition) {
         *     // Segment 1
         *   }
         *   // Segment 2
         * }
         * ```
         *
         * There is only one path from segment 1 to the code path start. Its
         * length is one so that is the shortest path.
         *
         * There are two paths from segment 2 to the code path start. One
         * through segment 1 with a length of two and another directly to the
         * start with a length of one. The shortest path has a length of one
         * so we would return that.
         */


        function shortestPathLengthToStart(segment) {
          var cache = shortestPathLengthToStart.cache;
          var length = cache.get(segment.id); // If `length` is null then we found a cycle! Return infinity since
          // the shortest path is definitely not the one where we looped.

          if (length === null) {
            return Infinity;
          } // We have a cached `length`. Return it.


          if (length !== undefined) {
            return length;
          } // Compute `length` and cache it. Guarding against cycles.


          cache.set(segment.id, null);

          if (segment.prevSegments.length === 0) {
            length = 1;
          } else {
            length = Infinity;

            var _iterator5 = _createForOfIteratorHelper(segment.prevSegments),
                _step5;

            try {
              for (_iterator5.s(); !(_step5 = _iterator5.n()).done;) {
                var prevSegment = _step5.value;
                var prevLength = shortestPathLengthToStart(prevSegment);

                if (prevLength < length) {
                  length = prevLength;
                }
              }
            } catch (err) {
              _iterator5.e(err);
            } finally {
              _iterator5.f();
            }

            length += 1;
          }

          cache.set(segment.id, length);
          return length;
        }

        countPathsFromStart.cache = new Map();
        countPathsToEnd.cache = new Map();
        shortestPathLengthToStart.cache = new Map(); // Count all code paths to the end of our component/hook. Also primes
        // the `countPathsToEnd` cache.

        var allPathsFromStartToEnd = countPathsToEnd(codePath.initialSegment); // Gets the function name for our code path. If the function name is
        // `undefined` then we know either that we have an anonymous function
        // expression or our code path is not in a function. In both cases we
        // will want to error since neither are React function components or
        // hook functions - unless it is an anonymous function argument to
        // forwardRef or memo.

        var codePathFunctionName = getFunctionName(codePathNode); // This is a valid code path for React hooks if we are directly in a React
        // function component or we are in a hook function.

        var isSomewhereInsideComponentOrHook = isInsideComponentOrHook(codePathNode);
        var isDirectlyInsideComponentOrHook = codePathFunctionName ? isComponentName(codePathFunctionName) || isHook(codePathFunctionName) : isForwardRefCallback(codePathNode) || isMemoCallback(codePathNode); // Compute the earliest finalizer level using information from the
        // cache. We expect all reachable final segments to have a cache entry
        // after calling `visitSegment()`.

        var shortestFinalPathLength = Infinity;

        var _iterator6 = _createForOfIteratorHelper(codePath.finalSegments),
            _step6;

        try {
          for (_iterator6.s(); !(_step6 = _iterator6.n()).done;) {
            var finalSegment = _step6.value;

            if (!finalSegment.reachable) {
              continue;
            }

            var length = shortestPathLengthToStart(finalSegment);

            if (length < shortestFinalPathLength) {
              shortestFinalPathLength = length;
            }
          } // Make sure all React Hooks pass our lint invariants. Log warnings
          // if not.

        } catch (err) {
          _iterator6.e(err);
        } finally {
          _iterator6.f();
        }

        var _iterator7 = _createForOfIteratorHelper(reactHooksMap),
            _step7;

        try {
          for (_iterator7.s(); !(_step7 = _iterator7.n()).done;) {
            var _step7$value = _step7.value,
                segment = _step7$value[0],
                reactHooks = _step7$value[1];

            // NOTE: We could report here that the hook is not reachable, but
            // that would be redundant with more general "no unreachable"
            // lint rules.
            if (!segment.reachable) {
              continue;
            } // If there are any final segments with a shorter path to start then
            // we possibly have an early return.
            //
            // If our segment is a final segment itself then siblings could
            // possibly be early returns.


            var possiblyHasEarlyReturn = segment.nextSegments.length === 0 ? shortestFinalPathLength <= shortestPathLengthToStart(segment) : shortestFinalPathLength < shortestPathLengthToStart(segment); // Count all the paths from the start of our code path to the end of
            // our code path that go _through_ this segment. The critical piece
            // of this is _through_. If we just call `countPathsToEnd(segment)`
            // then we neglect that we may have gone through multiple paths to get
            // to this point! Consider:
            //
            // ```js
            // function MyComponent() {
            //   if (a) {
            //     // Segment 1
            //   } else {
            //     // Segment 2
            //   }
            //   // Segment 3
            //   if (b) {
            //     // Segment 4
            //   } else {
            //     // Segment 5
            //   }
            // }
            // ```
            //
            // In this component we have four code paths:
            //
            // 1. `a = true; b = true`
            // 2. `a = true; b = false`
            // 3. `a = false; b = true`
            // 4. `a = false; b = false`
            //
            // From segment 3 there are two code paths to the end through segment
            // 4 and segment 5. However, we took two paths to get here through
            // segment 1 and segment 2.
            //
            // If we multiply the paths from start (two) by the paths to end (two)
            // for segment 3 we get four. Which is our desired count.

            var pathsFromStartToEnd = countPathsFromStart(segment) * countPathsToEnd(segment); // Is this hook a part of a cyclic segment?

            var cycled = cyclic.has(segment.id);

            var _iterator8 = _createForOfIteratorHelper(reactHooks),
                _step8;

            try {
              for (_iterator8.s(); !(_step8 = _iterator8.n()).done;) {
                var hook = _step8.value;

                // Report an error if a hook may be called more then once.
                if (cycled) {
                  context.report({
                    node: hook,
                    message: "React Hook \"" + context.getSource(hook) + "\" may be executed " + 'more than once. Possibly because it is called in a loop. ' + 'React Hooks must be called in the exact same order in ' + 'every component render.'
                  });
                } // If this is not a valid code path for React hooks then we need to
                // log a warning for every hook in this code path.
                //
                // Pick a special message depending on the scope this hook was
                // called in.


                if (isDirectlyInsideComponentOrHook) {
                  // Report an error if a hook does not reach all finalizing code
                  // path segments.
                  //
                  // Special case when we think there might be an early return.
                  if (!cycled && pathsFromStartToEnd !== allPathsFromStartToEnd) {
                    var message = "React Hook \"" + context.getSource(hook) + "\" is called " + 'conditionally. React Hooks must be called in the exact ' + 'same order in every component render.' + (possiblyHasEarlyReturn ? ' Did you accidentally call a React Hook after an' + ' early return?' : '');
                    context.report({
                      node: hook,
                      message: message
                    });
                  }
                } else if (codePathNode.parent && (codePathNode.parent.type === 'MethodDefinition' || codePathNode.parent.type === 'ClassProperty') && codePathNode.parent.value === codePathNode) {
                  // Custom message for hooks inside a class
                  var _message = "React Hook \"" + context.getSource(hook) + "\" cannot be called " + 'in a class component. React Hooks must be called in a ' + 'React function component or a custom React Hook function.';

                  context.report({
                    node: hook,
                    message: _message
                  });
                } else if (codePathFunctionName) {
                  // Custom message if we found an invalid function name.
                  var _message2 = "React Hook \"" + context.getSource(hook) + "\" is called in " + ("function \"" + context.getSource(codePathFunctionName) + "\" ") + 'that is neither a React function component nor a custom ' + 'React Hook function.' + ' React component names must start with an uppercase letter.' + ' React Hook names must start with the word "use".';

                  context.report({
                    node: hook,
                    message: _message2
                  });
                } else if (codePathNode.type === 'Program') {
                  // These are dangerous if you have inline requires enabled.
                  var _message3 = "React Hook \"" + context.getSource(hook) + "\" cannot be called " + 'at the top level. React Hooks must be called in a ' + 'React function component or a custom React Hook function.';

                  context.report({
                    node: hook,
                    message: _message3
                  });
                } else {
                  // Assume in all other cases the user called a hook in some
                  // random function callback. This should usually be true for
                  // anonymous function expressions. Hopefully this is clarifying
                  // enough in the common case that the incorrect message in
                  // uncommon cases doesn't matter.
                  if (isSomewhereInsideComponentOrHook) {
                    var _message4 = "React Hook \"" + context.getSource(hook) + "\" cannot be called " + 'inside a callback. React Hooks must be called in a ' + 'React function component or a custom React Hook function.';

                    context.report({
                      node: hook,
                      message: _message4
                    });
                  }
                }
              }
            } catch (err) {
              _iterator8.e(err);
            } finally {
              _iterator8.f();
            }
          }
        } catch (err) {
          _iterator7.e(err);
        } finally {
          _iterator7.f();
        }
      },
      // Missed opportunity...We could visit all `Identifier`s instead of all
      // `CallExpression`s and check that _every use_ of a hook name is valid.
      // But that gets complicated and enters type-system territory, so we're
      // only being strict about hook calls for now.
      CallExpression: function (node) {
        if (isHook(node.callee)) {
          // Add the hook node to a map keyed by the code path segment. We will
          // do full code path analysis at the end of our code path.
          var reactHooksMap = last(codePathReactHooksMapStack);
          var codePathSegment = last(codePathSegmentStack);
          var reactHooks = reactHooksMap.get(codePathSegment);

          if (!reactHooks) {
            reactHooks = [];
            reactHooksMap.set(codePathSegment, reactHooks);
          }

          reactHooks.push(node.callee);
        }
      }
    };
  }
};
/**
 * Gets the static name of a function AST node. For function declarations it is
 * easy. For anonymous function expressions it is much harder. If you search for
 * `IsAnonymousFunctionDefinition()` in the ECMAScript spec you'll find places
 * where JS gives anonymous function expressions names. We roughly detect the
 * same AST nodes with some exceptions to better fit our use case.
 */

function getFunctionName(node) {
  if (node.type === 'FunctionDeclaration' || node.type === 'FunctionExpression' && node.id) {
    // function useHook() {}
    // const whatever = function useHook() {};
    //
    // Function declaration or function expression names win over any
    // assignment statements or other renames.
    return node.id;
  } else if (node.type === 'FunctionExpression' || node.type === 'ArrowFunctionExpression') {
    if (node.parent.type === 'VariableDeclarator' && node.parent.init === node) {
      // const useHook = () => {};
      return node.parent.id;
    } else if (node.parent.type === 'AssignmentExpression' && node.parent.right === node && node.parent.operator === '=') {
      // useHook = () => {};
      return node.parent.left;
    } else if (node.parent.type === 'Property' && node.parent.value === node && !node.parent.computed) {
      // {useHook: () => {}}
      // {useHook() {}}
      return node.parent.key; // NOTE: We could also support `ClassProperty` and `MethodDefinition`
      // here to be pedantic. However, hooks in a class are an anti-pattern. So
      // we don't allow it to error early.
      //
      // class {useHook = () => {}}
      // class {useHook() {}}
    } else if (node.parent.type === 'AssignmentPattern' && node.parent.right === node && !node.parent.computed) {
      // const {useHook = () => {}} = {};
      // ({useHook = () => {}} = {});
      //
      // Kinda clowny, but we'd said we'd follow spec convention for
      // `IsAnonymousFunctionDefinition()` usage.
      return node.parent.left;
    } else {
      return undefined;
    }
  } else {
    return undefined;
  }
}
/**
 * Convenience function for peeking the last item in a stack.
 */


function last(array) {
  return array[array.length - 1];
}

/* eslint-disable no-for-of-loops/no-for-of-loops */
var ExhaustiveDeps = {
  meta: {
    type: 'suggestion',
    docs: {
      description: 'verifies the list of dependencies for Hooks like useEffect and similar',
      recommended: true,
      url: 'https://github.com/facebook/react/issues/14920'
    },
    fixable: 'code',
    hasSuggestions: true,
    schema: [{
      type: 'object',
      additionalProperties: false,
      enableDangerousAutofixThisMayCauseInfiniteLoops: false,
      properties: {
        additionalHooks: {
          type: 'string'
        },
        enableDangerousAutofixThisMayCauseInfiniteLoops: {
          type: 'boolean'
        }
      }
    }]
  },
  create: function (context) {
    // Parse the `additionalHooks` regex.
    var additionalHooks = context.options && context.options[0] && context.options[0].additionalHooks ? new RegExp(context.options[0].additionalHooks) : undefined;
    var enableDangerousAutofixThisMayCauseInfiniteLoops = context.options && context.options[0] && context.options[0].enableDangerousAutofixThisMayCauseInfiniteLoops || false;
    var options = {
      additionalHooks: additionalHooks,
      enableDangerousAutofixThisMayCauseInfiniteLoops: enableDangerousAutofixThisMayCauseInfiniteLoops
    };

    function reportProblem(problem) {
      if (enableDangerousAutofixThisMayCauseInfiniteLoops) {
        // Used to enable legacy behavior. Dangerous.
        // Keep this as an option until major IDEs upgrade (including VSCode FB ESLint extension).
        if (Array.isArray(problem.suggest) && problem.suggest.length > 0) {
          problem.fix = problem.suggest[0].fix;
        }
      }

      context.report(problem);
    }

    var scopeManager = context.getSourceCode().scopeManager; // Should be shared between visitors.

    var setStateCallSites = new WeakMap();
    var stateVariables = new WeakSet();
    var stableKnownValueCache = new WeakMap();
    var functionWithoutCapturedValueCache = new WeakMap();

    function memoizeWithWeakMap(fn, map) {
      return function (arg) {
        if (map.has(arg)) {
          // to verify cache hits:
          // console.log(arg.name)
          return map.get(arg);
        }

        var result = fn(arg);
        map.set(arg, result);
        return result;
      };
    }
    /**
     * Visitor for both function expressions and arrow function expressions.
     */


    function visitFunctionWithDependencies(node, declaredDependenciesNode, reactiveHook, reactiveHookName, isEffect) {
      if (isEffect && node.async) {
        reportProblem({
          node: node,
          message: "Effect callbacks are synchronous to prevent race conditions. " + "Put the async function inside:\n\n" + 'useEffect(() => {\n' + '  async function fetchData() {\n' + '    // You can await here\n' + '    const response = await MyAPI.getData(someId);\n' + '    // ...\n' + '  }\n' + '  fetchData();\n' + "}, [someId]); // Or [] if effect doesn't need props or state\n\n" + 'Learn more about data fetching with Hooks: https://reactjs.org/link/hooks-data-fetching'
        });
      } // Get the current scope.


      var scope = scopeManager.acquire(node); // Find all our "pure scopes". On every re-render of a component these
      // pure scopes may have changes to the variables declared within. So all
      // variables used in our reactive hook callback but declared in a pure
      // scope need to be listed as dependencies of our reactive hook callback.
      //
      // According to the rules of React you can't read a mutable value in pure
      // scope. We can't enforce this in a lint so we trust that all variables
      // declared outside of pure scope are indeed frozen.

      var pureScopes = new Set();
      var componentScope = null;
      {
        var currentScope = scope.upper;

        while (currentScope) {
          pureScopes.add(currentScope);

          if (currentScope.type === 'function') {
            break;
          }

          currentScope = currentScope.upper;
        } // If there is no parent function scope then there are no pure scopes.
        // The ones we've collected so far are incorrect. So don't continue with
        // the lint.


        if (!currentScope) {
          return;
        }

        componentScope = currentScope;
      }
      var isArray = Array.isArray; // Next we'll define a few helpers that helps us
      // tell if some values don't have to be declared as deps.
      // Some are known to be stable based on Hook calls.
      // const [state, setState] = useState() / React.useState()
      //               ^^^ true for this reference
      // const [state, dispatch] = useReducer() / React.useReducer()
      //               ^^^ true for this reference
      // const ref = useRef()
      //       ^^^ true for this reference
      // False for everything else.

      function isStableKnownHookValue(resolved) {
        if (!isArray(resolved.defs)) {
          return false;
        }

        var def = resolved.defs[0];

        if (def == null) {
          return false;
        } // Look for `let stuff = ...`


        if (def.node.type !== 'VariableDeclarator') {
          return false;
        }

        var init = def.node.init;

        if (init == null) {
          return false;
        }

        while (init.type === 'TSAsExpression') {
          init = init.expression;
        } // Detect primitive constants
        // const foo = 42


        var declaration = def.node.parent;

        if (declaration == null) {
          // This might happen if variable is declared after the callback.
          // In that case ESLint won't set up .parent refs.
          // So we'll set them up manually.
          fastFindReferenceWithParent(componentScope.block, def.node.id);
          declaration = def.node.parent;

          if (declaration == null) {
            return false;
          }
        }

        if (declaration.kind === 'const' && init.type === 'Literal' && (typeof init.value === 'string' || typeof init.value === 'number' || init.value === null)) {
          // Definitely stable
          return true;
        } // Detect known Hook calls
        // const [_, setState] = useState()


        if (init.type !== 'CallExpression') {
          return false;
        }

        var callee = init.callee; // Step into `= React.something` initializer.

        if (callee.type === 'MemberExpression' && callee.object.name === 'React' && callee.property != null && !callee.computed) {
          callee = callee.property;
        }

        if (callee.type !== 'Identifier') {
          return false;
        }

        var id = def.node.id;
        var _callee = callee,
            name = _callee.name;

        if (name === 'useRef' && id.type === 'Identifier') {
          // useRef() return value is stable.
          return true;
        } else if (name === 'useState' || name === 'useReducer') {
          // Only consider second value in initializing tuple stable.
          if (id.type === 'ArrayPattern' && id.elements.length === 2 && isArray(resolved.identifiers)) {
            // Is second tuple value the same reference we're checking?
            if (id.elements[1] === resolved.identifiers[0]) {
              if (name === 'useState') {
                var references = resolved.references;
                var writeCount = 0;

                for (var i = 0; i < references.length; i++) {
                  if (references[i].isWrite()) {
                    writeCount++;
                  }

                  if (writeCount > 1) {
                    return false;
                  }

                  setStateCallSites.set(references[i].identifier, id.elements[0]);
                }
              } // Setter is stable.


              return true;
            } else if (id.elements[0] === resolved.identifiers[0]) {
              if (name === 'useState') {
                var _references = resolved.references;

                for (var _i = 0; _i < _references.length; _i++) {
                  stateVariables.add(_references[_i].identifier);
                }
              } // State variable itself is dynamic.


              return false;
            }
          }
        } else if (name === 'useTransition') {
          // Only consider second value in initializing tuple stable.
          if (id.type === 'ArrayPattern' && id.elements.length === 2 && Array.isArray(resolved.identifiers)) {
            // Is second tuple value the same reference we're checking?
            if (id.elements[1] === resolved.identifiers[0]) {
              // Setter is stable.
              return true;
            }
          }
        } // By default assume it's dynamic.


        return false;
      } // Some are just functions that don't reference anything dynamic.


      function isFunctionWithoutCapturedValues(resolved) {
        if (!isArray(resolved.defs)) {
          return false;
        }

        var def = resolved.defs[0];

        if (def == null) {
          return false;
        }

        if (def.node == null || def.node.id == null) {
          return false;
        } // Search the direct component subscopes for
        // top-level function definitions matching this reference.


        var fnNode = def.node;
        var childScopes = componentScope.childScopes;
        var fnScope = null;
        var i;

        for (i = 0; i < childScopes.length; i++) {
          var childScope = childScopes[i];
          var childScopeBlock = childScope.block;

          if ( // function handleChange() {}
          fnNode.type === 'FunctionDeclaration' && childScopeBlock === fnNode || // const handleChange = () => {}
          // const handleChange = function() {}
          fnNode.type === 'VariableDeclarator' && childScopeBlock.parent === fnNode) {
            // Found it!
            fnScope = childScope;
            break;
          }
        }

        if (fnScope == null) {
          return false;
        } // Does this function capture any values
        // that are in pure scopes (aka render)?


        for (i = 0; i < fnScope.through.length; i++) {
          var ref = fnScope.through[i];

          if (ref.resolved == null) {
            continue;
          }

          if (pureScopes.has(ref.resolved.scope) && // Stable values are fine though,
          // although we won't check functions deeper.
          !memoizedIsStableKnownHookValue(ref.resolved)) {
            return false;
          }
        } // If we got here, this function doesn't capture anything
        // from render--or everything it captures is known stable.


        return true;
      } // Remember such values. Avoid re-running extra checks on them.


      var memoizedIsStableKnownHookValue = memoizeWithWeakMap(isStableKnownHookValue, stableKnownValueCache);
      var memoizedIsFunctionWithoutCapturedValues = memoizeWithWeakMap(isFunctionWithoutCapturedValues, functionWithoutCapturedValueCache); // These are usually mistaken. Collect them.

      var currentRefsInEffectCleanup = new Map(); // Is this reference inside a cleanup function for this effect node?
      // We can check by traversing scopes upwards  from the reference, and checking
      // if the last "return () => " we encounter is located directly inside the effect.

      function isInsideEffectCleanup(reference) {
        var curScope = reference.from;
        var isInReturnedFunction = false;

        while (curScope.block !== node) {
          if (curScope.type === 'function') {
            isInReturnedFunction = curScope.block.parent != null && curScope.block.parent.type === 'ReturnStatement';
          }

          curScope = curScope.upper;
        }

        return isInReturnedFunction;
      } // Get dependencies from all our resolved references in pure scopes.
      // Key is dependency string, value is whether it's stable.


      var dependencies = new Map();
      var optionalChains = new Map();
      gatherDependenciesRecursively(scope);

      function gatherDependenciesRecursively(currentScope) {
        var _iterator = _createForOfIteratorHelper(currentScope.references),
            _step;

        try {
          for (_iterator.s(); !(_step = _iterator.n()).done;) {
            var reference = _step.value;

            // If this reference is not resolved or it is not declared in a pure
            // scope then we don't care about this reference.
            if (!reference.resolved) {
              continue;
            }

            if (!pureScopes.has(reference.resolved.scope)) {
              continue;
            } // Narrow the scope of a dependency if it is, say, a member expression.
            // Then normalize the narrowed dependency.


            var referenceNode = fastFindReferenceWithParent(node, reference.identifier);
            var dependencyNode = getDependency(referenceNode);
            var dependency = analyzePropertyChain(dependencyNode, optionalChains); // Accessing ref.current inside effect cleanup is bad.

            if ( // We're in an effect...
            isEffect && // ... and this look like accessing .current...
            dependencyNode.type === 'Identifier' && (dependencyNode.parent.type === 'MemberExpression' || dependencyNode.parent.type === 'OptionalMemberExpression') && !dependencyNode.parent.computed && dependencyNode.parent.property.type === 'Identifier' && dependencyNode.parent.property.name === 'current' && // ...in a cleanup function or below...
            isInsideEffectCleanup(reference)) {
              currentRefsInEffectCleanup.set(dependency, {
                reference: reference,
                dependencyNode: dependencyNode
              });
            }

            if (dependencyNode.parent.type === 'TSTypeQuery' || dependencyNode.parent.type === 'TSTypeReference') {
              continue;
            }

            var def = reference.resolved.defs[0];

            if (def == null) {
              continue;
            } // Ignore references to the function itself as it's not defined yet.


            if (def.node != null && def.node.init === node.parent) {
              continue;
            } // Ignore Flow type parameters


            if (def.type === 'TypeParameter') {
              continue;
            } // Add the dependency to a map so we can make sure it is referenced
            // again in our dependencies array. Remember whether it's stable.


            if (!dependencies.has(dependency)) {
              var resolved = reference.resolved;
              var isStable = memoizedIsStableKnownHookValue(resolved) || memoizedIsFunctionWithoutCapturedValues(resolved);
              dependencies.set(dependency, {
                isStable: isStable,
                references: [reference]
              });
            } else {
              dependencies.get(dependency).references.push(reference);
            }
          }
        } catch (err) {
          _iterator.e(err);
        } finally {
          _iterator.f();
        }

        var _iterator2 = _createForOfIteratorHelper(currentScope.childScopes),
            _step2;

        try {
          for (_iterator2.s(); !(_step2 = _iterator2.n()).done;) {
            var childScope = _step2.value;
            gatherDependenciesRecursively(childScope);
          }
        } catch (err) {
          _iterator2.e(err);
        } finally {
          _iterator2.f();
        }
      } // Warn about accessing .current in cleanup effects.


      currentRefsInEffectCleanup.forEach(function (_ref, dependency) {
        var reference = _ref.reference,
            dependencyNode = _ref.dependencyNode;
        var references = reference.resolved.references; // Is React managing this ref or us?
        // Let's see if we can find a .current assignment.

        var foundCurrentAssignment = false;

        for (var i = 0; i < references.length; i++) {
          var identifier = references[i].identifier;
          var parent = identifier.parent;

          if (parent != null && // ref.current
          // Note: no need to handle OptionalMemberExpression because it can't be LHS.
          parent.type === 'MemberExpression' && !parent.computed && parent.property.type === 'Identifier' && parent.property.name === 'current' && // ref.current = <something>
          parent.parent.type === 'AssignmentExpression' && parent.parent.left === parent) {
            foundCurrentAssignment = true;
            break;
          }
        } // We only want to warn about React-managed refs.


        if (foundCurrentAssignment) {
          return;
        }

        reportProblem({
          node: dependencyNode.parent.property,
          message: "The ref value '" + dependency + ".current' will likely have " + "changed by the time this effect cleanup function runs. If " + "this ref points to a node rendered by React, copy " + ("'" + dependency + ".current' to a variable inside the effect, and ") + "use that variable in the cleanup function."
        });
      }); // Warn about assigning to variables in the outer scope.
      // Those are usually bugs.

      var staleAssignments = new Set();

      function reportStaleAssignment(writeExpr, key) {
        if (staleAssignments.has(key)) {
          return;
        }

        staleAssignments.add(key);
        reportProblem({
          node: writeExpr,
          message: "Assignments to the '" + key + "' variable from inside React Hook " + (context.getSource(reactiveHook) + " will be lost after each ") + "render. To preserve the value over time, store it in a useRef " + "Hook and keep the mutable value in the '.current' property. " + "Otherwise, you can move this variable directly inside " + (context.getSource(reactiveHook) + ".")
        });
      } // Remember which deps are stable and report bad usage first.


      var stableDependencies = new Set();
      dependencies.forEach(function (_ref2, key) {
        var isStable = _ref2.isStable,
            references = _ref2.references;

        if (isStable) {
          stableDependencies.add(key);
        }

        references.forEach(function (reference) {
          if (reference.writeExpr) {
            reportStaleAssignment(reference.writeExpr, key);
          }
        });
      });

      if (staleAssignments.size > 0) {
        // The intent isn't clear so we'll wait until you fix those first.
        return;
      }

      if (!declaredDependenciesNode) {
        // Check if there are any top-level setState() calls.
        // Those tend to lead to infinite loops.
        var setStateInsideEffectWithoutDeps = null;
        dependencies.forEach(function (_ref3, key) {
          var isStable = _ref3.isStable,
              references = _ref3.references;

          if (setStateInsideEffectWithoutDeps) {
            return;
          }

          references.forEach(function (reference) {
            if (setStateInsideEffectWithoutDeps) {
              return;
            }

            var id = reference.identifier;
            var isSetState = setStateCallSites.has(id);

            if (!isSetState) {
              return;
            }

            var fnScope = reference.from;

            while (fnScope.type !== 'function') {
              fnScope = fnScope.upper;
            }

            var isDirectlyInsideEffect = fnScope.block === node;

            if (isDirectlyInsideEffect) {
              // TODO: we could potentially ignore early returns.
              setStateInsideEffectWithoutDeps = key;
            }
          });
        });

        if (setStateInsideEffectWithoutDeps) {
          var _collectRecommendatio = collectRecommendations({
            dependencies: dependencies,
            declaredDependencies: [],
            stableDependencies: stableDependencies,
            externalDependencies: new Set(),
            isEffect: true
          }),
              _suggestedDependencies = _collectRecommendatio.suggestedDependencies;

          reportProblem({
            node: reactiveHook,
            message: "React Hook " + reactiveHookName + " contains a call to '" + setStateInsideEffectWithoutDeps + "'. " + "Without a list of dependencies, this can lead to an infinite chain of updates. " + "To fix this, pass [" + _suggestedDependencies.join(', ') + ("] as a second argument to the " + reactiveHookName + " Hook."),
            suggest: [{
              desc: "Add dependencies array: [" + _suggestedDependencies.join(', ') + "]",
              fix: function (fixer) {
                return fixer.insertTextAfter(node, ", [" + _suggestedDependencies.join(', ') + "]");
              }
            }]
          });
        }

        return;
      }

      var declaredDependencies = [];
      var externalDependencies = new Set();

      if (declaredDependenciesNode.type !== 'ArrayExpression') {
        // If the declared dependencies are not an array expression then we
        // can't verify that the user provided the correct dependencies. Tell
        // the user this in an error.
        reportProblem({
          node: declaredDependenciesNode,
          message: "React Hook " + context.getSource(reactiveHook) + " was passed a " + 'dependency list that is not an array literal. This means we ' + "can't statically verify whether you've passed the correct " + 'dependencies.'
        });
      } else {
        declaredDependenciesNode.elements.forEach(function (declaredDependencyNode) {
          // Skip elided elements.
          if (declaredDependencyNode === null) {
            return;
          } // If we see a spread element then add a special warning.


          if (declaredDependencyNode.type === 'SpreadElement') {
            reportProblem({
              node: declaredDependencyNode,
              message: "React Hook " + context.getSource(reactiveHook) + " has a spread " + "element in its dependency array. This means we can't " + "statically verify whether you've passed the " + 'correct dependencies.'
            });
            return;
          } // Try to normalize the declared dependency. If we can't then an error
          // will be thrown. We will catch that error and report an error.


          var declaredDependency;

          try {
            declaredDependency = analyzePropertyChain(declaredDependencyNode, null);
          } catch (error) {
            if (/Unsupported node type/.test(error.message)) {
              if (declaredDependencyNode.type === 'Literal') {
                if (dependencies.has(declaredDependencyNode.value)) {
                  reportProblem({
                    node: declaredDependencyNode,
                    message: "The " + declaredDependencyNode.raw + " literal is not a valid dependency " + "because it never changes. " + ("Did you mean to include " + declaredDependencyNode.value + " in the array instead?")
                  });
                } else {
                  reportProblem({
                    node: declaredDependencyNode,
                    message: "The " + declaredDependencyNode.raw + " literal is not a valid dependency " + 'because it never changes. You can safely remove it.'
                  });
                }
              } else {
                reportProblem({
                  node: declaredDependencyNode,
                  message: "React Hook " + context.getSource(reactiveHook) + " has a " + "complex expression in the dependency array. " + 'Extract it to a separate variable so it can be statically checked.'
                });
              }

              return;
            } else {
              throw error;
            }
          }

          var maybeID = declaredDependencyNode;

          while (maybeID.type === 'MemberExpression' || maybeID.type === 'OptionalMemberExpression' || maybeID.type === 'ChainExpression') {
            maybeID = maybeID.object || maybeID.expression.object;
          }

          var isDeclaredInComponent = !componentScope.through.some(function (ref) {
            return ref.identifier === maybeID;
          }); // Add the dependency to our declared dependency map.

          declaredDependencies.push({
            key: declaredDependency,
            node: declaredDependencyNode
          });

          if (!isDeclaredInComponent) {
            externalDependencies.add(declaredDependency);
          }
        });
      }

      var _collectRecommendatio2 = collectRecommendations({
        d