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130 lines
19 KiB
130 lines
19 KiB
2 years ago
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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");}};}(); /**
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* @fileOverview Ensures that no imported module imports the linted module.
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* @author Ben Mosher
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*/
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var _resolve = require('eslint-module-utils/resolve');var _resolve2 = _interopRequireDefault(_resolve);
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var _ExportMap = require('../ExportMap');var _ExportMap2 = _interopRequireDefault(_ExportMap);
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var _importType = require('../core/importType');
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var _moduleVisitor = require('eslint-module-utils/moduleVisitor');var _moduleVisitor2 = _interopRequireDefault(_moduleVisitor);
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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);}}
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// todo: cache cycles / deep relationships for faster repeat evaluation
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module.exports = {
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meta: {
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type: 'suggestion',
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docs: { url: (0, _docsUrl2['default'])('no-cycle') },
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schema: [(0, _moduleVisitor.makeOptionsSchema)({
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maxDepth: {
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oneOf: [
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{
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description: 'maximum dependency depth to traverse',
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type: 'integer',
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minimum: 1 },
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{
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'enum': ['∞'],
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type: 'string' }] },
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ignoreExternal: {
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description: 'ignore external modules',
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type: 'boolean',
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'default': false } })] },
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create: function () {function create(context) {
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var myPath = context.getPhysicalFilename ? context.getPhysicalFilename() : context.getFilename();
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if (myPath === '<text>') return {}; // can't cycle-check a non-file
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var options = context.options[0] || {};
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var maxDepth = typeof options.maxDepth === 'number' ? options.maxDepth : Infinity;
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var ignoreModule = function () {function ignoreModule(name) {return options.ignoreExternal && (0, _importType.isExternalModule)(
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name,
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(0, _resolve2['default'])(name, context),
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context);}return ignoreModule;}();
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function checkSourceValue(sourceNode, importer) {
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if (ignoreModule(sourceNode.value)) {
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return; // ignore external modules
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}
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if (
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importer.type === 'ImportDeclaration' && (
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// import type { Foo } (TS and Flow)
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importer.importKind === 'type' ||
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// import { type Foo } (Flow)
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importer.specifiers.every(function (_ref) {var importKind = _ref.importKind;return importKind === 'type';})))
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{
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return; // ignore type imports
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}
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var imported = _ExportMap2['default'].get(sourceNode.value, context);
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if (imported == null) {
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return; // no-unresolved territory
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}
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if (imported.path === myPath) {
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return; // no-self-import territory
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}
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var untraversed = [{ mget: function () {function mget() {return imported;}return mget;}(), route: [] }];
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var traversed = new Set();
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function detectCycle(_ref2) {var mget = _ref2.mget,route = _ref2.route;
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var m = mget();
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if (m == null) return;
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if (traversed.has(m.path)) return;
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traversed.add(m.path);var _iteratorNormalCompletion = true;var _didIteratorError = false;var _iteratorError = undefined;try {
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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;
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if (traversed.has(path)) continue;
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var toTraverse = [].concat(_toConsumableArray(declarations)).filter(function (_ref5) {var source = _ref5.source,isOnlyImportingTypes = _ref5.isOnlyImportingTypes;return (
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!ignoreModule(source.value) &&
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// Ignore only type imports
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!isOnlyImportingTypes);});
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/*
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Only report as a cycle if there are any import declarations that are considered by
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the rule. For example:
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a.ts:
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import { foo } from './b' // should not be reported as a cycle
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b.ts:
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import type { Bar } from './a'
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*/
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if (path === myPath && toTraverse.length > 0) return true;
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if (route.length + 1 < maxDepth) {var _iteratorNormalCompletion2 = true;var _didIteratorError2 = false;var _iteratorError2 = undefined;try {
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for (var _iterator2 = toTraverse[Symbol.iterator](), _step2; !(_iteratorNormalCompletion2 = (_step2 = _iterator2.next()).done); _iteratorNormalCompletion2 = true) {var _ref6 = _step2.value;var source = _ref6.source;
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untraversed.push({ mget: getter, route: route.concat(source) });
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}} catch (err) {_didIteratorError2 = true;_iteratorError2 = err;} finally {try {if (!_iteratorNormalCompletion2 && _iterator2['return']) {_iterator2['return']();}} finally {if (_didIteratorError2) {throw _iteratorError2;}}}
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}
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}} catch (err) {_didIteratorError = true;_iteratorError = err;} finally {try {if (!_iteratorNormalCompletion && _iterator['return']) {_iterator['return']();}} finally {if (_didIteratorError) {throw _iteratorError;}}}
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}
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while (untraversed.length > 0) {
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var next = untraversed.shift(); // bfs!
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if (detectCycle(next)) {
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var message = next.route.length > 0 ? 'Dependency cycle via ' + String(
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routeString(next.route)) :
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'Dependency cycle detected.';
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context.report(importer, message);
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return;
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}
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}
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}
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return (0, _moduleVisitor2['default'])(checkSourceValue, context.options[0]);
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}return create;}() };
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function routeString(route) {
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return route.map(function (s) {return String(s.value) + ':' + String(s.loc.start.line);}).join('=>');
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}
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