'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");}};}();var _resolve = require('eslint-module-utils/resolve');var _resolve2 = _interopRequireDefault(_resolve); 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);}}function _toArray(arr) {return Array.isArray(arr) ? arr : Array.from(arr);} function checkImports(imported, context) { for (const _ref of imported.entries()) {var _ref2 = _slicedToArray(_ref, 2);const module = _ref2[0];const nodes = _ref2[1]; if (nodes.length > 1) { const message = `'${module}' imported multiple times.`;var _nodes = _toArray( nodes);const first = _nodes[0],rest = _nodes.slice(1); const sourceCode = context.getSourceCode(); const fix = getFix(first, rest, sourceCode); context.report({ node: first.source, message, fix // Attach the autofix (if any) to the first import. }); for (const node of rest) { context.report({ node: node.source, message }); } } } } function getFix(first, rest, sourceCode) { // Sorry ESLint <= 3 users, no autofix for you. Autofixing duplicate imports // requires multiple `fixer.whatever()` calls in the `fix`: We both need to // update the first one, and remove the rest. Support for multiple // `fixer.whatever()` in a single `fix` was added in ESLint 4.1. // `sourceCode.getCommentsBefore` was added in 4.0, so that's an easy thing to // check for. if (typeof sourceCode.getCommentsBefore !== 'function') { return undefined; } // Adjusting the first import might make it multiline, which could break // `eslint-disable-next-line` comments and similar, so bail if the first // import has comments. Also, if the first import is `import * as ns from // './foo'` there's nothing we can do. if (hasProblematicComments(first, sourceCode) || hasNamespace(first)) { return undefined; } const defaultImportNames = new Set( [first].concat(_toConsumableArray(rest)).map(getDefaultImportName).filter(Boolean)); // Bail if there are multiple different default import names – it's up to the // user to choose which one to keep. if (defaultImportNames.size > 1) { return undefined; } // Leave it to the user to handle comments. Also skip `import * as ns from // './foo'` imports, since they cannot be merged into another import. const restWithoutComments = rest.filter(node => !( hasProblematicComments(node, sourceCode) || hasNamespace(node))); const specifiers = restWithoutComments. map(node => { const tokens = sourceCode.getTokens(node); const openBrace = tokens.find(token => isPunctuator(token, '{')); const closeBrace = tokens.find(token => isPunctuator(token, '}')); if (openBrace == null || closeBrace == null) { return undefined; } return { importNode: node, text: sourceCode.text.slice(openBrace.range[1], closeBrace.range[0]), hasTrailingComma: isPunctuator(sourceCode.getTokenBefore(closeBrace), ','), isEmpty: !hasSpecifiers(node) }; }). filter(Boolean); const unnecessaryImports = restWithoutComments.filter(node => !hasSpecifiers(node) && !hasNamespace(node) && !specifiers.some(specifier => specifier.importNode === node)); const shouldAddDefault = getDefaultImportName(first) == null && defaultImportNames.size === 1; const shouldAddSpecifiers = specifiers.length > 0; const shouldRemoveUnnecessary = unnecessaryImports.length > 0; if (!(shouldAddDefault || shouldAddSpecifiers || shouldRemoveUnnecessary)) { return undefined; } return fixer => { const tokens = sourceCode.getTokens(first); const openBrace = tokens.find(token => isPunctuator(token, '{')); const closeBrace = tokens.find(token => isPunctuator(token, '}')); const firstToken = sourceCode.getFirstToken(first);var _defaultImportNames = _slicedToArray( defaultImportNames, 1);const defaultImportName = _defaultImportNames[0]; const firstHasTrailingComma = closeBrace != null && isPunctuator(sourceCode.getTokenBefore(closeBrace), ','); const firstIsEmpty = !hasSpecifiers(first);var _specifiers$reduce = specifiers.reduce( (_ref3, specifier) => {var _ref4 = _slicedToArray(_ref3, 2);let result = _ref4[0],needsComma = _ref4[1]; return [ needsComma && !specifier.isEmpty ? `${result},${specifier.text}` : `${result}${specifier.text}`, specifier.isEmpty ? needsComma : true]; }, ['', !firstHasTrailingComma && !firstIsEmpty]),_specifiers$reduce2 = _slicedToArray(_specifiers$reduce, 1);const specifiersText = _specifiers$reduce2[0]; const fixes = []; if (shouldAddDefault && openBrace == null && shouldAddSpecifiers) { // `import './foo'` → `import def, {...} from './foo'` fixes.push( fixer.insertTextAfter(firstToken, ` ${defaultImportName}, {${specifiersText}} from`)); } else if (shouldAddDefault && openBrace == null && !shouldAddSpecifiers) { // `import './foo'` → `import def from './foo'` fixes.push(fixer.insertTextAfter(firstToken, ` ${defaultImportName} from`)); } else if (shouldAddDefault && openBrace != null && closeBrace != null) { // `import {...} from './foo'` → `import def, {...} from './foo'` fixes.push(fixer.insertTextAfter(firstToken, ` ${defaultImportName},`)); if (shouldAddSpecifiers) { // `import def, {...} from './foo'` → `import def, {..., ...} from './foo'` fixes.push(fixer.insertTextBefore(closeBrace, specifiersText)); } } else if (!shouldAddDefault && openBrace == null && shouldAddSpecifiers) { if (first.specifiers.length === 0) { // `import './foo'` → `import {...} from './foo'` fixes.push(fixer.insertTextAfter(firstToken, ` {${specifiersText}} from`)); } else { // `import def from './foo'` → `import def, {...} from './foo'` fixes.push(fixer.insertTextAfter(first.specifiers[0], `, {${specifiersText}}`)); } } else if (!shouldAddDefault && openBrace != null && closeBrace != null) { // `import {...} './foo'` → `import {..., ...} from './foo'` fixes.push(fixer.insertTextBefore(closeBrace, specifiersText)); } // Remove imports whose specifiers have been moved into the first import. for (const specifier of specifiers) { fixes.push(fixer.remove(specifier.importNode)); } // Remove imports whose default import has been moved to the first import, // and side-effect-only imports that are unnecessary due to the first // import. for (const node of unnecessaryImports) { fixes.push(fixer.remove(node)); } return fixes; }; } function isPunctuator(node, value) { return node.type === 'Punctuator' && node.value === value; } // Get the name of the default import of `node`, if any. function getDefaultImportName(node) { const defaultSpecifier = node.specifiers. find(specifier => specifier.type === 'ImportDefaultSpecifier'); return defaultSpecifier != null ? defaultSpecifier.local.name : undefined; } // Checks whether `node` has a namespace import. function hasNamespace(node) { const specifiers = node.specifiers. filter(specifier => specifier.type === 'ImportNamespaceSpecifier'); return specifiers.length > 0; } // Checks whether `node` has any non-default specifiers. function hasSpecifiers(node) { const specifiers = node.specifiers. filter(specifier => specifier.type === 'ImportSpecifier'); return specifiers.length > 0; } // It's not obvious what the user wants to do with comments associated with // duplicate imports, so skip imports with comments when autofixing. function hasProblematicComments(node, sourceCode) { return ( hasCommentBefore(node, sourceCode) || hasCommentAfter(node, sourceCode) || hasCommentInsideNonSpecifiers(node, sourceCode)); } // Checks whether `node` has a comment (that ends) on the previous line or on // the same line as `node` (starts). function hasCommentBefore(node, sourceCode) { return sourceCode.getCommentsBefore(node). some(comment => comment.loc.end.line >= node.loc.start.line - 1); } // Checks whether `node` has a comment (that starts) on the same line as `node` // (ends). function hasCommentAfter(node, sourceCode) { return sourceCode.getCommentsAfter(node). some(comment => comment.loc.start.line === node.loc.end.line); } // Checks whether `node` has any comments _inside,_ except inside the `{...}` // part (if any). function hasCommentInsideNonSpecifiers(node, sourceCode) { const tokens = sourceCode.getTokens(node); const openBraceIndex = tokens.findIndex(token => isPunctuator(token, '{')); const closeBraceIndex = tokens.findIndex(token => isPunctuator(token, '}')); // Slice away the first token, since we're no looking for comments _before_ // `node` (only inside). If there's a `{...}` part, look for comments before // the `{`, but not before the `}` (hence the `+1`s). const someTokens = openBraceIndex >= 0 && closeBraceIndex >= 0 ? tokens.slice(1, openBraceIndex + 1).concat(tokens.slice(closeBraceIndex + 1)) : tokens.slice(1); return someTokens.some(token => sourceCode.getCommentsBefore(token).length > 0); } module.exports = { meta: { type: 'problem', docs: { url: (0, _docsUrl2.default)('no-duplicates') }, fixable: 'code', schema: [ { type: 'object', properties: { considerQueryString: { type: 'boolean' } }, additionalProperties: false }] }, create: function (context) { // Prepare the resolver from options. const considerQueryStringOption = context.options[0] && context.options[0]['considerQueryString']; const defaultResolver = sourcePath => (0, _resolve2.default)(sourcePath, context) || sourcePath; const resolver = considerQueryStringOption ? sourcePath => { const parts = sourcePath.match(/^([^?]*)\?(.*)$/); if (!parts) { return defaultResolver(sourcePath); } return defaultResolver(parts[1]) + '?' + parts[2]; } : defaultResolver; const imported = new Map(); const nsImported = new Map(); const typesImported = new Map(); return { 'ImportDeclaration': function (n) { // resolved path will cover aliased duplicates const resolvedPath = resolver(n.source.value); const importMap = n.importKind === 'type' ? typesImported : hasNamespace(n) ? nsImported : imported; if (importMap.has(resolvedPath)) { importMap.get(resolvedPath).push(n); } else { importMap.set(resolvedPath, [n]); } }, 'Program:exit': function () { checkImports(imported, context); checkImports(nsImported, context); checkImports(typesImported, context); } }; } }; //# 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resolve from 'eslint-module-utils/resolve';\nimport docsUrl from '../docsUrl';\n\nfunction checkImports(imported, context) {\n  for (const [module, nodes] of imported.entries()) {\n    if (nodes.length > 1) {\n      const message = `'${module}' imported multiple times.`;\n      const [first, ...rest] = nodes;\n      const sourceCode = context.getSourceCode();\n      const fix = getFix(first, rest, sourceCode);\n\n      context.report({\n        node: first.source,\n        message,\n        fix, // Attach the autofix (if any) to the first import.\n      });\n\n      for (const node of rest) {\n        context.report({\n          node: node.source,\n          message,\n        });\n      }\n    }\n  }\n}\n\nfunction getFix(first, rest, sourceCode) {\n  // Sorry ESLint <= 3 users, no autofix for you. Autofixing duplicate imports\n  // requires multiple `fixer.whatever()` calls in the `fix`: We both need to\n  // update the first one, and remove the rest. Support for multiple\n  // `fixer.whatever()` in a single `fix` was added in ESLint 4.1.\n  // `sourceCode.getCommentsBefore` was added in 4.0, so that's an easy thing to\n  // check for.\n  if (typeof sourceCode.getCommentsBefore !== 'function') {\n    return undefined;\n  }\n\n  // Adjusting the first import might make it multiline, which could break\n  // `eslint-disable-next-line` comments and similar, so bail if the first\n  // import has comments. 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Also skip `import * as ns from\n  // './foo'` imports, since they cannot be merged into another import.\n  const restWithoutComments = rest.filter(node => !(\n    hasProblematicComments(node, sourceCode) ||\n    hasNamespace(node)\n  ));\n\n  const specifiers = restWithoutComments\n    .map(node => {\n      const tokens = sourceCode.getTokens(node);\n      const openBrace = tokens.find(token => isPunctuator(token, '{'));\n      const closeBrace = tokens.find(token => isPunctuator(token, '}'));\n\n      if (openBrace == null || closeBrace == null) {\n        return undefined;\n      }\n\n      return {\n        importNode: node,\n        text: sourceCode.text.slice(openBrace.range[1], closeBrace.range[0]),\n        hasTrailingComma: isPunctuator(sourceCode.getTokenBefore(closeBrace), ','),\n        isEmpty: !hasSpecifiers(node),\n      };\n    })\n    .filter(Boolean);\n\n  const unnecessaryImports = restWithoutComments.filter(node =>\n    !hasSpecifiers(node) &&\n    !hasNamespace(node) &&\n    !specifiers.some(specifier => specifier.importNode === node)\n  );\n\n  const shouldAddDefault = getDefaultImportName(first) == null && defaultImportNames.size === 1;\n  const shouldAddSpecifiers = specifiers.length > 0;\n  const shouldRemoveUnnecessary = unnecessaryImports.length > 0;\n\n  if (!(shouldAddDefault || shouldAddSpecifiers || shouldRemoveUnnecessary)) {\n    return undefined;\n  }\n\n  return fixer => {\n    const tokens = sourceCode.getTokens(first);\n    const openBrace = tokens.find(token => isPunctuator(token, '{'));\n    const closeBrace = tokens.find(token => isPunctuator(token, '}'));\n    const firstToken = sourceCode.getFirstToken(first);\n    const [defaultImportName] = defaultImportNames;\n\n    const firstHasTrailingComma =\n      closeBrace != null &&\n      isPunctuator(sourceCode.getTokenBefore(closeBrace), ',');\n    const firstIsEmpty = !hasSpecifiers(first);\n\n    const [specifiersText] = specifiers.reduce(\n      ([result, needsComma], specifier) => {\n        return [\n          needsComma && !specifier.isEmpty\n            ? `${result},${specifier.text}`\n            : `${result}${specifier.text}`,\n          specifier.isEmpty ? needsComma : true,\n        ];\n      },\n      ['', !firstHasTrailingComma && !firstIsEmpty]\n    );\n\n    const fixes = [];\n\n    if (shouldAddDefault && openBrace == null && shouldAddSpecifiers) {\n      // `import './foo'` → `import def, {...} from './foo'`\n      fixes.push(\n        fixer.insertTextAfter(firstToken, ` ${defaultImportName}, {${specifiersText}} from`)\n      );\n    } else if (shouldAddDefault && openBrace == null && !shouldAddSpecifiers) {\n      // `import './foo'` → `import def from './foo'`\n      fixes.push(fixer.insertTextAfter(firstToken, ` ${defaultImportName} from`));\n    } else if (shouldAddDefault && openBrace != null && closeBrace != null) {\n      // `import {...} from './foo'` → `import def, {...} from './foo'`\n      fixes.push(fixer.insertTextAfter(firstToken, ` ${defaultImportName},`));\n      if (shouldAddSpecifiers) {\n        // `import def, {...} from './foo'` → `import def, {..., ...} from './foo'`\n        fixes.push(fixer.insertTextBefore(closeBrace, specifiersText));\n      }\n    } else if (!shouldAddDefault && openBrace == null && shouldAddSpecifiers) {\n      if (first.specifiers.length === 0) {\n        // `import './foo'` → `import {...} from './foo'`\n        fixes.push(fixer.insertTextAfter(firstToken, ` {${specifiersText}} from`));\n      } else {\n        // `import def from './foo'` → `import def, {...} from './foo'`\n        fixes.push(fixer.insertTextAfter(first.specifiers[0], `, {${specifiersText}}`));\n      }\n    } else if (!shouldAddDefault && openBrace != null && closeBrace != null) {\n      // `import {...} './foo'` → `import {..., ...} from './foo'`\n      fixes.push(fixer.insertTextBefore(closeBrace, specifiersText));\n    }\n\n    // Remove imports whose specifiers have been moved into the first import.\n    for (const specifier of specifiers) {\n      fixes.push(fixer.remove(specifier.importNode));\n    }\n\n    // Remove imports whose default import has been moved to the first import,\n    // and side-effect-only imports that are unnecessary due to the first\n    // import.\n    for (const node of unnecessaryImports) {\n      fixes.push(fixer.remove(node));\n    }\n\n    return fixes;\n  };\n}\n\nfunction isPunctuator(node, value) {\n  return node.type === 'Punctuator' && node.value === value;\n}\n\n// Get the name of the default import of `node`, if any.\nfunction getDefaultImportName(node) {\n  const defaultSpecifier = node.specifiers\n    .find(specifier => specifier.type === 'ImportDefaultSpecifier');\n  return defaultSpecifier != null ? defaultSpecifier.local.name : undefined;\n}\n\n// Checks whether `node` has a namespace import.\nfunction hasNamespace(node) {\n  const specifiers = node.specifiers\n    .filter(specifier => specifier.type === 'ImportNamespaceSpecifier');\n  return specifiers.length > 0;\n}\n\n// Checks whether `node` has any non-default specifiers.\nfunction hasSpecifiers(node) {\n  const specifiers = node.specifiers\n    .filter(specifier => specifier.type === 'ImportSpecifier');\n  return specifiers.length > 0;\n}\n\n// It's not obvious what the user wants to do with comments associated with\n// duplicate imports, so skip imports with comments when autofixing.\nfunction hasProblematicComments(node, sourceCode) {\n  return (\n    hasCommentBefore(node, sourceCode) ||\n    hasCommentAfter(node, sourceCode) ||\n    hasCommentInsideNonSpecifiers(node, sourceCode)\n  );\n}\n\n// Checks whether `node` has a comment (that ends) on the previous line or on\n// the same line as `node` (starts).\nfunction hasCommentBefore(node, sourceCode) {\n  return sourceCode.getCommentsBefore(node)\n    .some(comment => comment.loc.end.line >= node.loc.start.line - 1);\n}\n\n// Checks whether `node` has a comment (that starts) on the same line as `node`\n// (ends).\nfunction hasCommentAfter(node, sourceCode) {\n  return sourceCode.getCommentsAfter(node)\n    .some(comment => comment.loc.start.line === node.loc.end.line);\n}\n\n// Checks whether `node` has any comments _inside,_ except inside the `{...}`\n// part (if any).\nfunction hasCommentInsideNonSpecifiers(node, sourceCode) {\n  const tokens = sourceCode.getTokens(node);\n  const openBraceIndex = tokens.findIndex(token => isPunctuator(token, '{'));\n  const closeBraceIndex = tokens.findIndex(token => isPunctuator(token, '}'));\n  // Slice away the first token, since we're no looking for comments _before_\n  // `node` (only inside). If there's a `{...}` part, look for comments before\n  // the `{`, but not before the `}` (hence the `+1`s).\n  const someTokens = openBraceIndex >= 0 && closeBraceIndex >= 0\n    ? tokens.slice(1, openBraceIndex + 1).concat(tokens.slice(closeBraceIndex + 1))\n    : tokens.slice(1);\n  return someTokens.some(token => sourceCode.getCommentsBefore(token).length > 0);\n}\n\nmodule.exports = {\n  meta: {\n    type: 'problem',\n    docs: {\n      url: docsUrl('no-duplicates'),\n    },\n    fixable: 'code',\n    schema: [\n      {\n        type: 'object',\n        properties: {\n          considerQueryString: {\n            type: 'boolean',\n          },\n        },\n        additionalProperties: false,\n      },\n    ],\n  },\n\n  create: function (context) {\n    // Prepare the resolver from options.\n    const considerQueryStringOption = context.options[0] &&\n      context.options[0]['considerQueryString'];\n    const defaultResolver = sourcePath => resolve(sourcePath, context) || sourcePath;\n    const resolver = considerQueryStringOption ? (sourcePath => {\n      const parts = sourcePath.match(/^([^?]*)\\?(.*)$/);\n      if (!parts) {\n        return defaultResolver(sourcePath);\n      }\n      return defaultResolver(parts[1]) + '?' + parts[2];\n    }) : defaultResolver;\n\n    const imported = new Map();\n    const nsImported = new Map();\n    const typesImported = new Map();\n    return {\n      'ImportDeclaration': function (n) {\n        // resolved path will cover aliased duplicates\n        const resolvedPath = resolver(n.source.value);\n        const importMap = n.importKind === 'type' ? typesImported :\n          (hasNamespace(n) ? nsImported : imported);\n\n        if (importMap.has(resolvedPath)) {\n          importMap.get(resolvedPath).push(n);\n        } else {\n          importMap.set(resolvedPath, [n]);\n        }\n      },\n\n      'Program:exit': function () {\n        checkImports(imported, context);\n        checkImports(nsImported, context);\n        checkImports(typesImported, context);\n      },\n    };\n  },\n};\n"]}