extensions.js 20 KB

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  1. 'use strict';var _path = require('path');var _path2 = _interopRequireDefault(_path);
  2. var _resolve = require('eslint-module-utils/resolve');var _resolve2 = _interopRequireDefault(_resolve);
  3. var _importType = require('../core/importType');
  4. var _moduleVisitor = require('eslint-module-utils/moduleVisitor');var _moduleVisitor2 = _interopRequireDefault(_moduleVisitor);
  5. var _docsUrl = require('../docsUrl');var _docsUrl2 = _interopRequireDefault(_docsUrl);function _interopRequireDefault(obj) {return obj && obj.__esModule ? obj : { 'default': obj };}
  6. var enumValues = { 'enum': ['always', 'ignorePackages', 'never'] };
  7. var patternProperties = {
  8. type: 'object',
  9. patternProperties: { '.*': enumValues } };
  10. var properties = {
  11. type: 'object',
  12. properties: {
  13. 'pattern': patternProperties,
  14. 'ignorePackages': { type: 'boolean' } } };
  15. function buildProperties(context) {
  16. var result = {
  17. defaultConfig: 'never',
  18. pattern: {},
  19. ignorePackages: false };
  20. context.options.forEach(function (obj) {
  21. // If this is a string, set defaultConfig to its value
  22. if (typeof obj === 'string') {
  23. result.defaultConfig = obj;
  24. return;
  25. }
  26. // If this is not the new structure, transfer all props to result.pattern
  27. if (obj.pattern === undefined && obj.ignorePackages === undefined) {
  28. Object.assign(result.pattern, obj);
  29. return;
  30. }
  31. // If pattern is provided, transfer all props
  32. if (obj.pattern !== undefined) {
  33. Object.assign(result.pattern, obj.pattern);
  34. }
  35. // If ignorePackages is provided, transfer it to result
  36. if (obj.ignorePackages !== undefined) {
  37. result.ignorePackages = obj.ignorePackages;
  38. }
  39. });
  40. if (result.defaultConfig === 'ignorePackages') {
  41. result.defaultConfig = 'always';
  42. result.ignorePackages = true;
  43. }
  44. return result;
  45. }
  46. module.exports = {
  47. meta: {
  48. type: 'suggestion',
  49. docs: {
  50. category: 'Style guide',
  51. description: 'Ensure consistent use of file extension within the import path.',
  52. url: (0, _docsUrl2['default'])('extensions') },
  53. schema: {
  54. anyOf: [
  55. {
  56. type: 'array',
  57. items: [enumValues],
  58. additionalItems: false },
  59. {
  60. type: 'array',
  61. items: [
  62. enumValues,
  63. properties],
  64. additionalItems: false },
  65. {
  66. type: 'array',
  67. items: [properties],
  68. additionalItems: false },
  69. {
  70. type: 'array',
  71. items: [patternProperties],
  72. additionalItems: false },
  73. {
  74. type: 'array',
  75. items: [
  76. enumValues,
  77. patternProperties],
  78. additionalItems: false }] } },
  79. create: function () {function create(context) {
  80. var props = buildProperties(context);
  81. function getModifier(extension) {
  82. return props.pattern[extension] || props.defaultConfig;
  83. }
  84. function isUseOfExtensionRequired(extension, isPackage) {
  85. return getModifier(extension) === 'always' && (!props.ignorePackages || !isPackage);
  86. }
  87. function isUseOfExtensionForbidden(extension) {
  88. return getModifier(extension) === 'never';
  89. }
  90. function isResolvableWithoutExtension(file) {
  91. var extension = _path2['default'].extname(file);
  92. var fileWithoutExtension = file.slice(0, -extension.length);
  93. var resolvedFileWithoutExtension = (0, _resolve2['default'])(fileWithoutExtension, context);
  94. return resolvedFileWithoutExtension === (0, _resolve2['default'])(file, context);
  95. }
  96. function isExternalRootModule(file) {
  97. var slashCount = file.split('/').length - 1;
  98. if (slashCount === 0) return true;
  99. if ((0, _importType.isScoped)(file) && slashCount <= 1) return true;
  100. return false;
  101. }
  102. function checkFileExtension(source, node) {
  103. // bail if the declaration doesn't have a source, e.g. "export { foo };", or if it's only partially typed like in an editor
  104. if (!source || !source.value) return;
  105. var importPathWithQueryString = source.value;
  106. // don't enforce anything on builtins
  107. if ((0, _importType.isBuiltIn)(importPathWithQueryString, context.settings)) return;
  108. var importPath = importPathWithQueryString.replace(/\?(.*)$/, '');
  109. // don't enforce in root external packages as they may have names with `.js`.
  110. // Like `import Decimal from decimal.js`)
  111. if (isExternalRootModule(importPath)) return;
  112. var resolvedPath = (0, _resolve2['default'])(importPath, context);
  113. // get extension from resolved path, if possible.
  114. // for unresolved, use source value.
  115. var extension = _path2['default'].extname(resolvedPath || importPath).substring(1);
  116. // determine if this is a module
  117. var isPackage = (0, _importType.isExternalModule)(
  118. importPath,
  119. (0, _resolve2['default'])(importPath, context),
  120. context) ||
  121. (0, _importType.isScoped)(importPath);
  122. if (!extension || !importPath.endsWith('.' + String(extension))) {
  123. // ignore type-only imports and exports
  124. if (node.importKind === 'type' || node.exportKind === 'type') return;
  125. var extensionRequired = isUseOfExtensionRequired(extension, isPackage);
  126. var extensionForbidden = isUseOfExtensionForbidden(extension);
  127. if (extensionRequired && !extensionForbidden) {
  128. context.report({
  129. node: source,
  130. message: 'Missing file extension ' + (
  131. extension ? '"' + String(extension) + '" ' : '') + 'for "' + String(importPathWithQueryString) + '"' });
  132. }
  133. } else if (extension) {
  134. if (isUseOfExtensionForbidden(extension) && isResolvableWithoutExtension(importPath)) {
  135. context.report({
  136. node: source,
  137. message: 'Unexpected use of file extension "' + String(extension) + '" for "' + String(importPathWithQueryString) + '"' });
  138. }
  139. }
  140. }
  141. return (0, _moduleVisitor2['default'])(checkFileExtension, { commonjs: true });
  142. }return create;}() };
  143. //# 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path from 'path';\n\nimport resolve from 'eslint-module-utils/resolve';\nimport { isBuiltIn, isExternalModule, isScoped } from '../core/importType';\nimport moduleVisitor from 'eslint-module-utils/moduleVisitor';\nimport docsUrl from '../docsUrl';\n\nconst enumValues = { enum: [ 'always', 'ignorePackages', 'never' ] };\nconst patternProperties = {\n  type: 'object',\n  patternProperties: { '.*': enumValues },\n};\nconst properties = {\n  type: 'object',\n  properties: {\n    'pattern': patternProperties,\n    'ignorePackages': { type: 'boolean' },\n  },\n};\n\nfunction buildProperties(context) {\n\n  const result = {\n    defaultConfig: 'never',\n    pattern: {},\n    ignorePackages: false,\n  };\n\n  context.options.forEach(obj => {\n\n    // If this is a string, set defaultConfig to its value\n    if (typeof obj === 'string') {\n      result.defaultConfig = obj;\n      return;\n    }\n\n    // If this is not the new structure, transfer all props to result.pattern\n    if (obj.pattern === undefined && obj.ignorePackages === undefined) {\n      Object.assign(result.pattern, obj);\n      return;\n    }\n\n    // If pattern is provided, transfer all props\n    if (obj.pattern !== undefined) {\n      Object.assign(result.pattern, obj.pattern);\n    }\n\n    // If ignorePackages is provided, transfer it to result\n    if (obj.ignorePackages !== undefined) {\n      result.ignorePackages = obj.ignorePackages;\n    }\n  });\n\n  if (result.defaultConfig === 'ignorePackages') {\n    result.defaultConfig = 'always';\n    result.ignorePackages = true;\n  }\n\n  return result;\n}\n\nmodule.exports = {\n  meta: {\n    type: 'suggestion',\n    docs: {\n      category: 'Style guide',\n      description: 'Ensure consistent use of file extension within the import path.',\n      url: docsUrl('extensions'),\n    },\n\n    schema: {\n      anyOf: [\n        {\n          type: 'array',\n          items: [enumValues],\n          additionalItems: false,\n        },\n        {\n          type: 'array',\n          items: [\n            enumValues,\n            properties,\n          ],\n          additionalItems: false,\n        },\n        {\n          type: 'array',\n          items: [properties],\n          additionalItems: false,\n        },\n        {\n          type: 'array',\n          items: [patternProperties],\n          additionalItems: false,\n        },\n        {\n          type: 'array',\n          items: [\n            enumValues,\n            patternProperties,\n          ],\n          additionalItems: false,\n        },\n      ],\n    },\n  },\n\n  create(context) {\n\n    const props = buildProperties(context);\n\n    function getModifier(extension) {\n      return props.pattern[extension] || props.defaultConfig;\n    }\n\n    function isUseOfExtensionRequired(extension, isPackage) {\n      return getModifier(extension) === 'always' && (!props.ignorePackages || !isPackage);\n    }\n\n    function isUseOfExtensionForbidden(extension) {\n      return getModifier(extension) === 'never';\n    }\n\n    function isResolvableWithoutExtension(file) {\n      const extension = path.extname(file);\n      const fileWithoutExtension = file.slice(0, -extension.length);\n      const resolvedFileWithoutExtension = resolve(fileWithoutExtension, context);\n\n      return resolvedFileWithoutExtension === resolve(file, context);\n    }\n\n    function isExternalRootModule(file) {\n      const slashCount = file.split('/').length - 1;\n\n      if (slashCount === 0)  return true;\n      if (isScoped(file) && slashCount <= 1) return true;\n      return false;\n    }\n\n    function checkFileExtension(source, node) {\n      // bail if the declaration doesn't have a source, e.g. \"export { foo };\", or if it's only partially typed like in an editor\n      if (!source || !source.value) return;\n\n      const importPathWithQueryString = source.value;\n\n      // don't enforce anything on builtins\n      if (isBuiltIn(importPathWithQueryString, context.settings)) return;\n\n      const importPath = importPathWithQueryString.replace(/\\?(.*)$/, '');\n\n      // don't enforce in root external packages as they may have names with `.js`.\n      // Like `import Decimal from decimal.js`)\n      if (isExternalRootModule(importPath)) return;\n\n      const resolvedPath = resolve(importPath, context);\n\n      // get extension from resolved path, if possible.\n      // for unresolved, use source value.\n      const extension = path.extname(resolvedPath || importPath).substring(1);\n\n      // determine if this is a module\n      const isPackage = isExternalModule(\n        importPath,\n        resolve(importPath, context),\n        context,\n      ) || isScoped(importPath);\n\n      if (!extension || !importPath.endsWith(`.${extension}`)) {\n        // ignore type-only imports and exports\n        if (node.importKind === 'type' || node.exportKind === 'type') return;\n        const extensionRequired = isUseOfExtensionRequired(extension, isPackage);\n        const extensionForbidden = isUseOfExtensionForbidden(extension);\n        if (extensionRequired && !extensionForbidden) {\n          context.report({\n            node: source,\n            message:\n              `Missing file extension ${extension ? `\"${extension}\" ` : ''}for \"${importPathWithQueryString}\"`,\n          });\n        }\n      } else if (extension) {\n        if (isUseOfExtensionForbidden(extension) && isResolvableWithoutExtension(importPath)) {\n          context.report({\n            node: source,\n            message: `Unexpected use of file extension \"${extension}\" for \"${importPathWithQueryString}\"`,\n          });\n        }\n      }\n    }\n\n    return moduleVisitor(checkFileExtension, { commonjs: true });\n  },\n};\n"]}