luhn-generator
Version:
A generator of numbers that passes the validation of Luhn algorithm or Luhn formula, also known as the 'modulus 10' or 'mod 10' algorithm
105 lines (82 loc) • 14.1 kB
JavaScript
;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 _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 };}
// todo: cache cycles / deep relationships for faster repeat evaluation
module.exports = {
meta: {
type: 'suggestion',
docs: { url: (0, _docsUrl2.default)('no-cycle') },
schema: [(0, _moduleVisitor.makeOptionsSchema)({
maxDepth: {
oneOf: [
{
description: 'maximum dependency depth to traverse',
type: 'integer',
minimum: 1 },
{
enum: ['∞'],
type: 'string' }] },
ignoreExternal: {
description: 'ignore external modules',
type: 'boolean',
default: false } })] },
create: function (context) {
const myPath = context.getFilename();
if (myPath === '<text>') return {}; // can't cycle-check a non-file
const options = context.options[0] || {};
const maxDepth = typeof options.maxDepth === 'number' ? options.maxDepth : Infinity;
const ignoreModule = name => options.ignoreExternal ? (0, _importType.isExternalModule)(name) : false;
function checkSourceValue(sourceNode, importer) {
if (ignoreModule(sourceNode.value)) {
return; // ignore external modules
}
const imported = _ExportMap2.default.get(sourceNode.value, context);
if (importer.importKind === 'type') {
return; // no Flow import resolution
}
if (imported == null) {
return; // no-unresolved territory
}
if (imported.path === myPath) {
return; // no-self-import territory
}
const untraversed = [{ mget: () => imported, route: [] }];
const traversed = new Set();
function detectCycle(_ref) {let mget = _ref.mget,route = _ref.route;
const m = mget();
if (m == null) return;
if (traversed.has(m.path)) return;
traversed.add(m.path);
for (let _ref2 of m.imports) {var _ref3 = _slicedToArray(_ref2, 2);let path = _ref3[0];var _ref3$ = _ref3[1];let getter = _ref3$.getter;let source = _ref3$.source;
if (path === myPath) return true;
if (traversed.has(path)) continue;
if (ignoreModule(source.value)) continue;
if (route.length + 1 < maxDepth) {
untraversed.push({
mget: getter,
route: route.concat(source) });
}
}
}
while (untraversed.length > 0) {
const next = untraversed.shift(); // bfs!
if (detectCycle(next)) {
const message = next.route.length > 0 ?
`Dependency cycle via ${routeString(next.route)}` :
'Dependency cycle detected.';
context.report(importer, message);
return;
}
}
}
return (0, _moduleVisitor2.default)(checkSourceValue, context.options[0]);
} };
function routeString(route) {
return route.map(s => `${s.value}:${s.loc.start.line}`).join('=>');
}
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options.maxDepth : Infinity\n    const ignoreModule = (name) => options.ignoreExternal ? isExternalModule(name) : false\n\n    function checkSourceValue(sourceNode, importer) {\n      if (ignoreModule(sourceNode.value)) {\n        return // ignore external modules\n      }\n\n      const imported = Exports.get(sourceNode.value, context)\n\n      if (importer.importKind === 'type') {\n        return // no Flow import resolution\n      }\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      const traversed = new Set()\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 (let [path, { getter, source }] of m.imports) {\n          if (path === myPath) return true\n          if (traversed.has(path)) continue\n          if (ignoreModule(source.value)) continue\n          if (route.length + 1 < maxDepth) {\n            untraversed.push({\n              mget: getter,\n              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 ${routeString(next.route)}`\n            : 'Dependency cycle detected.')\n          context.report(importer, message)\n          return\n        }\n      }\n    }\n\n    return moduleVisitor(checkSourceValue, context.options[0])\n  },\n}\n\nfunction routeString(route) {\n  return route.map(s => `${s.value}:${s.loc.start.line}`).join('=>')\n}\n"]}