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codeql-action/node_modules/eslint-plugin-import/lib/rules/no-cycle.js

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'use strict';var _slicedToArray = function () {function sliceIterator(arr, i) {var _arr = [];var _n = true;var _d = false;var _e = undefined;try {for (var _i = arr[Symbol.iterator](), _s; !(_n = (_s = _i.next()).done); _n = true) {_arr.push(_s.value);if (i && _arr.length === i) break;}} catch (err) {_d = true;_e = err;} finally {try {if (!_n && _i["return"]) _i["return"]();} finally {if (_d) throw _e;}}return _arr;}return function (arr, i) {if (Array.isArray(arr)) {return arr;} else if (Symbol.iterator in Object(arr)) {return sliceIterator(arr, i);} else {throw new TypeError("Invalid attempt to destructure non-iterable instance");}};}(); /**
* @fileOverview Ensures that no imported module imports the linted module.
* @author Ben Mosher
*/
var _resolve = require('eslint-module-utils/resolve');var _resolve2 = _interopRequireDefault(_resolve);
var _ExportMap = require('../ExportMap');var _ExportMap2 = _interopRequireDefault(_ExportMap);
var _importType = require('../core/importType');
var _moduleVisitor = require('eslint-module-utils/moduleVisitor');var _moduleVisitor2 = _interopRequireDefault(_moduleVisitor);
var _docsUrl = require('../docsUrl');var _docsUrl2 = _interopRequireDefault(_docsUrl);function _interopRequireDefault(obj) {return obj && obj.__esModule ? obj : { 'default': obj };}function _toConsumableArray(arr) {if (Array.isArray(arr)) {for (var i = 0, arr2 = Array(arr.length); i < arr.length; i++) {arr2[i] = arr[i];}return arr2;} else {return Array.from(arr);}}
var traversed = new Set();
module.exports = {
meta: {
type: 'suggestion',
docs: {
category: 'Static analysis',
description: 'Forbid a module from importing a module with a dependency path back to itself.',
url: (0, _docsUrl2['default'])('no-cycle') },
schema: [(0, _moduleVisitor.makeOptionsSchema)({
maxDepth: {
anyOf: [
{
description: 'maximum dependency depth to traverse',
type: 'integer',
minimum: 1 },
{
'enum': ['∞'],
type: 'string' }] },
ignoreExternal: {
description: 'ignore external modules',
type: 'boolean',
'default': false },
allowUnsafeDynamicCyclicDependency: {
description: 'Allow cyclic dependency if there is at least one dynamic import in the chain',
type: 'boolean',
'default': false } })] },
create: function () {function create(context) {
var myPath = context.getPhysicalFilename ? context.getPhysicalFilename() : context.getFilename();
if (myPath === '<text>') {return {};} // can't cycle-check a non-file
var options = context.options[0] || {};
var maxDepth = typeof options.maxDepth === 'number' ? options.maxDepth : Infinity;
var ignoreModule = function () {function ignoreModule(name) {return options.ignoreExternal && (0, _importType.isExternalModule)(
name,
(0, _resolve2['default'])(name, context),
context);}return ignoreModule;}();
function checkSourceValue(sourceNode, importer) {
if (ignoreModule(sourceNode.value)) {
return; // ignore external modules
}
if (
options.allowUnsafeDynamicCyclicDependency && (
// Ignore `import()`
importer.type === 'ImportExpression'
// `require()` calls are always checked (if possible)
|| importer.type === 'CallExpression' && importer.callee.name !== 'require'))
{
return; // cycle via dynamic import allowed by config
}
if (
importer.type === 'ImportDeclaration' && (
// import type { Foo } (TS and Flow)
importer.importKind === 'type'
// import { type Foo } (Flow)
|| importer.specifiers.every(function (_ref) {var importKind = _ref.importKind;return importKind === 'type';})))
{
return; // ignore type imports
}
var imported = _ExportMap2['default'].get(sourceNode.value, context);
if (imported == null) {
return; // no-unresolved territory
}
if (imported.path === myPath) {
return; // no-self-import territory
}
var untraversed = [{ mget: function () {function mget() {return imported;}return mget;}(), route: [] }];
function detectCycle(_ref2) {var mget = _ref2.mget,route = _ref2.route;
var m = mget();
if (m == null) {return;}
if (traversed.has(m.path)) {return;}
traversed.add(m.path);var _iteratorNormalCompletion = true;var _didIteratorError = false;var _iteratorError = undefined;try {
for (var _iterator = m.imports[Symbol.iterator](), _step; !(_iteratorNormalCompletion = (_step = _iterator.next()).done); _iteratorNormalCompletion = true) {var _ref3 = _step.value;var _ref4 = _slicedToArray(_ref3, 2);var path = _ref4[0];var _ref4$ = _ref4[1];var getter = _ref4$.getter;var declarations = _ref4$.declarations;
if (traversed.has(path)) {continue;}
var toTraverse = [].concat(_toConsumableArray(declarations)).filter(function (_ref5) {var source = _ref5.source,isOnlyImportingTypes = _ref5.isOnlyImportingTypes;return !ignoreModule(source.value)
// Ignore only type imports
&& !isOnlyImportingTypes;});
/*
If cyclic dependency is allowed via dynamic import, skip checking if any module is imported dynamically
*/
if (options.allowUnsafeDynamicCyclicDependency && toTraverse.some(function (d) {return d.dynamic;})) {return;}
/*
Only report as a cycle if there are any import declarations that are considered by
the rule. For example:
a.ts:
import { foo } from './b' // should not be reported as a cycle
b.ts:
import type { Bar } from './a'
*/
if (path === myPath && toTraverse.length > 0) {return true;}
if (route.length + 1 < maxDepth) {var _iteratorNormalCompletion2 = true;var _didIteratorError2 = false;var _iteratorError2 = undefined;try {
for (var _iterator2 = toTraverse[Symbol.iterator](), _step2; !(_iteratorNormalCompletion2 = (_step2 = _iterator2.next()).done); _iteratorNormalCompletion2 = true) {var _ref6 = _step2.value;var source = _ref6.source;
untraversed.push({ mget: getter, route: route.concat(source) });
}} catch (err) {_didIteratorError2 = true;_iteratorError2 = err;} finally {try {if (!_iteratorNormalCompletion2 && _iterator2['return']) {_iterator2['return']();}} finally {if (_didIteratorError2) {throw _iteratorError2;}}}
}
}} catch (err) {_didIteratorError = true;_iteratorError = err;} finally {try {if (!_iteratorNormalCompletion && _iterator['return']) {_iterator['return']();}} finally {if (_didIteratorError) {throw _iteratorError;}}}
}
while (untraversed.length > 0) {
var next = untraversed.shift(); // bfs!
if (detectCycle(next)) {
var message = next.route.length > 0 ? 'Dependency cycle via ' + String(
routeString(next.route)) :
'Dependency cycle detected.';
context.report(importer, message);
return;
}
}
}
return Object.assign((0, _moduleVisitor2['default'])(checkSourceValue, context.options[0]), {
'Program:exit': function () {function ProgramExit() {
traversed.clear();
}return ProgramExit;}() });
}return create;}() };
function routeString(route) {
return route.map(function (s) {return String(s.value) + ':' + String(s.loc.start.line);}).join('=>');
}
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* @fileOverview Ensures that no imported module imports the linted module.\n * @author Ben Mosher\n */\n\nimport resolve from 'eslint-module-utils/resolve';\nimport Exports from '../ExportMap';\nimport { isExternalModule } from '../core/importType';\nimport moduleVisitor, { makeOptionsSchema } from 'eslint-module-utils/moduleVisitor';\nimport docsUrl from '../docsUrl';\n\nconst traversed = new Set();\n\nmodule.exports = {\n  meta: {\n    type: 'suggestion',\n    docs: {\n      category: 'Static analysis',\n      description: 'Forbid a module from importing a module with a dependency path back to itself.',\n      url: docsUrl('no-cycle'),\n    },\n    schema: [makeOptionsSchema({\n      maxDepth: {\n        anyOf: [\n          {\n            description: 'maximum dependency depth to traverse',\n            type: 'integer',\n            minimum: 1,\n          },\n          {\n            enum: ['∞'],\n            type: 'string',\n          },\n        ],\n      },\n      ignoreExternal: {\n        description: 'ignore external modules',\n        type: 'boolean',\n        default: false,\n      },\n      allowUnsafeDynamicCyclicDependency: {\n        description: 'Allow cyclic dependency if there is at least one dynamic import in the chain',\n        type: 'boolean',\n        default: false,\n      },\n    })],\n  },\n\n  create(context) {\n    const myPath = context.getPhysicalFilename ? context.getPhysicalFilename() : context.getFilename();\n    if (myPath === '<text>') { return {}; } // can't cycle-check a non-file\n\n    const options = context.options[0] || {};\n    const maxDepth = typeof options.maxDepth === 'number' ? options.maxDepth : Infinity;\n    const ignoreModule = (name) => options.ignoreExternal && isExternalModule(\n      name,\n      resolve(name, context),\n      context,\n    );\n\n    function checkSourceValue(sourceNode, importer) {\n      if (ignoreModule(sourceNode.value)) {\n        return; // ignore external modules\n      }\n      if (\n        options.allowUnsafeDynamicCyclicDependency && (\n          // Ignore `import()`\n          importer.type === 'ImportExpression'\n          // `require()` calls are always checked (if possible)\n          || importer.type === 'CallExpression' && importer.callee.name !== 'require'\n        )\n      ) {\n        return; // cycle via dynamic import allowed by config\n      }\n\n      if (\n        importer.type === 'ImportDeclaration' && (\n          // import type { Foo } (TS and Flow)\n          importer.importKind === 'type'\n          // import { type Foo } (Flow)\n          || importer.specifiers.every(({ importKind }) => importKind === 'type')\n        )\n      ) {\n        return; // ignore type imports\n      }\n\n      const imported = Exports.get(sourceNode.value, context);\n\n      if (imported == null) {\n        return;  // no-unresolved territory\n      }\n\n      if (imported.path === myPath) {\n        return;  // no-self-import territory\n      }\n\n      const untraversed = [{ mget: () => imported, route: [] }];\n      function detectCycle({ mget, route }) {\n        const m = mget();\n        if (m == null) { return; }\n        if (traversed.has(m.path)) { return; }\n        traversed.add(m.path);\n\n        for (const [path, { getter, declarations }] of m.imports) {\n          if (traversed.has(path)) { continue; }\n          const toTraverse = [...declarations].filter(({ source, isOnlyImportingTypes }) => !ignoreModule(source.value)\n            // Ignore only type imports\n            && !isOnlyImportingTypes,\n          );\n\n          /*\n          If cyclic dependency is allowed via dynamic import, skip checking if any module is imported dynamically\n          */\n          if (options.allowUnsafeDynamicCyclicDependency && toTraverse.some((d) => d.dynamic)) { return; }\n\n          /*\n          Only report as a cycle if there are any import declarations that are considered by\n          the rule. For example:\n\n          a.ts:\n          import { foo } from './b' // should not be reported as a cycle\n\n          b.ts:\n          import type { Bar } from './a'\n          */\n          if (path === myPath && toTraverse.length > 0) { return true; }\n          if (route.length + 1 < maxDepth) {\n            for (const { source } of toTraverse) {\n              untraversed.push({ mget: getter, route: route.concat(source) });\n            }\n          }\n        }\n      }\n\n      while (untraversed.length > 0) {\n        const next = untraversed.shift(); // bfs!\n        if (detectCycle(next)) {\n          const message = next.route.length > 0\n            ? `Dependency cycle via ${routeString(next.route)}`\n            : 'Dependency cycle detected.';\n          context.report(importer, message);\n          return;\n        }\n      }\n    }\n\n    return Object.assign(moduleVisitor(checkSourceValue, context.options[0]), {\n      'Program:exit'() {\n        traversed.clear();\n      },\n    });\n  },\n};\n\nfunction routeString(route) {\n  return route.map((s) => `${s.value}:${s.loc.start.line}`).join('=>');\n}\n"]}