namespace.js 26 KB

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  1. 'use strict';var _declaredScope = require('eslint-module-utils/declaredScope');var _declaredScope2 = _interopRequireDefault(_declaredScope);
  2. var _builder = require('../exportMap/builder');var _builder2 = _interopRequireDefault(_builder);
  3. var _exportMap = require('../exportMap');var _exportMap2 = _interopRequireDefault(_exportMap);
  4. var _importDeclaration = require('../importDeclaration');var _importDeclaration2 = _interopRequireDefault(_importDeclaration);
  5. var _docsUrl = require('../docsUrl');var _docsUrl2 = _interopRequireDefault(_docsUrl);function _interopRequireDefault(obj) {return obj && obj.__esModule ? obj : { 'default': obj };}
  6. function processBodyStatement(context, namespaces, declaration) {
  7. if (declaration.type !== 'ImportDeclaration') {return;}
  8. if (declaration.specifiers.length === 0) {return;}
  9. var imports = _builder2['default'].get(declaration.source.value, context);
  10. if (imports == null) {return null;}
  11. if (imports.errors.length > 0) {
  12. imports.reportErrors(context, declaration);
  13. return;
  14. }
  15. declaration.specifiers.forEach(function (specifier) {
  16. switch (specifier.type) {
  17. case 'ImportNamespaceSpecifier':
  18. if (!imports.size) {
  19. context.report(
  20. specifier, 'No exported names found in module \'' + String(
  21. declaration.source.value) + '\'.');
  22. }
  23. namespaces.set(specifier.local.name, imports);
  24. break;
  25. case 'ImportDefaultSpecifier':
  26. case 'ImportSpecifier':{
  27. var meta = imports.get(
  28. // default to 'default' for default https://i.imgur.com/nj6qAWy.jpg
  29. specifier.imported ? specifier.imported.name || specifier.imported.value : 'default');
  30. if (!meta || !meta.namespace) {break;}
  31. namespaces.set(specifier.local.name, meta.namespace);
  32. break;
  33. }
  34. default:}
  35. });
  36. }
  37. module.exports = {
  38. meta: {
  39. type: 'problem',
  40. docs: {
  41. category: 'Static analysis',
  42. description: 'Ensure imported namespaces contain dereferenced properties as they are dereferenced.',
  43. url: (0, _docsUrl2['default'])('namespace') },
  44. schema: [
  45. {
  46. type: 'object',
  47. properties: {
  48. allowComputed: {
  49. description: 'If `false`, will report computed (and thus, un-lintable) references to namespace members.',
  50. type: 'boolean',
  51. 'default': false } },
  52. additionalProperties: false }] },
  53. create: function () {function namespaceRule(context) {
  54. // read options
  55. var _ref =
  56. context.options[0] || {},_ref$allowComputed = _ref.allowComputed,allowComputed = _ref$allowComputed === undefined ? false : _ref$allowComputed;
  57. var namespaces = new Map();
  58. function makeMessage(last, namepath) {
  59. return '\'' + String(last.name) + '\' not found in ' + (namepath.length > 1 ? 'deeply ' : '') + 'imported namespace \'' + String(namepath.join('.')) + '\'.';
  60. }
  61. return {
  62. // pick up all imports at body entry time, to properly respect hoisting
  63. Program: function () {function Program(_ref2) {var body = _ref2.body;
  64. body.forEach(function (x) {processBodyStatement(context, namespaces, x);});
  65. }return Program;}(),
  66. // same as above, but does not add names to local map
  67. ExportNamespaceSpecifier: function () {function ExportNamespaceSpecifier(namespace) {
  68. var declaration = (0, _importDeclaration2['default'])(context, namespace);
  69. var imports = _builder2['default'].get(declaration.source.value, context);
  70. if (imports == null) {return null;}
  71. if (imports.errors.length) {
  72. imports.reportErrors(context, declaration);
  73. return;
  74. }
  75. if (!imports.size) {
  76. context.report(
  77. namespace, 'No exported names found in module \'' + String(
  78. declaration.source.value) + '\'.');
  79. }
  80. }return ExportNamespaceSpecifier;}(),
  81. // todo: check for possible redefinition
  82. MemberExpression: function () {function MemberExpression(dereference) {
  83. if (dereference.object.type !== 'Identifier') {return;}
  84. if (!namespaces.has(dereference.object.name)) {return;}
  85. if ((0, _declaredScope2['default'])(context, dereference.object.name, dereference) !== 'module') {return;}
  86. if (dereference.parent.type === 'AssignmentExpression' && dereference.parent.left === dereference) {
  87. context.report(
  88. dereference.parent, 'Assignment to member of namespace \'' + String(
  89. dereference.object.name) + '\'.');
  90. }
  91. // go deep
  92. var namespace = namespaces.get(dereference.object.name);
  93. var namepath = [dereference.object.name];
  94. // while property is namespace and parent is member expression, keep validating
  95. while (namespace instanceof _exportMap2['default'] && dereference.type === 'MemberExpression') {
  96. if (dereference.computed) {
  97. if (!allowComputed) {
  98. context.report(
  99. dereference.property, 'Unable to validate computed reference to imported namespace \'' + String(
  100. dereference.object.name) + '\'.');
  101. }
  102. return;
  103. }
  104. if (!namespace.has(dereference.property.name)) {
  105. context.report(
  106. dereference.property,
  107. makeMessage(dereference.property, namepath));
  108. break;
  109. }
  110. var exported = namespace.get(dereference.property.name);
  111. if (exported == null) {return;}
  112. // stash and pop
  113. namepath.push(dereference.property.name);
  114. namespace = exported.namespace;
  115. dereference = dereference.parent;
  116. }
  117. }return MemberExpression;}(),
  118. VariableDeclarator: function () {function VariableDeclarator(_ref3) {var id = _ref3.id,init = _ref3.init;
  119. if (init == null) {return;}
  120. if (init.type !== 'Identifier') {return;}
  121. if (!namespaces.has(init.name)) {return;}
  122. // check for redefinition in intermediate scopes
  123. if ((0, _declaredScope2['default'])(context, init.name, init) !== 'module') {return;}
  124. // DFS traverse child namespaces
  125. function testKey(pattern, namespace) {var path = arguments.length > 2 && arguments[2] !== undefined ? arguments[2] : [init.name];
  126. if (!(namespace instanceof _exportMap2['default'])) {return;}
  127. if (pattern.type !== 'ObjectPattern') {return;}var _iteratorNormalCompletion = true;var _didIteratorError = false;var _iteratorError = undefined;try {
  128. for (var _iterator = pattern.properties[Symbol.iterator](), _step; !(_iteratorNormalCompletion = (_step = _iterator.next()).done); _iteratorNormalCompletion = true) {var property = _step.value;
  129. if (
  130. property.type === 'ExperimentalRestProperty' ||
  131. property.type === 'RestElement' ||
  132. !property.key)
  133. {
  134. continue;
  135. }
  136. if (property.key.type !== 'Identifier') {
  137. context.report({
  138. node: property,
  139. message: 'Only destructure top-level names.' });
  140. continue;
  141. }
  142. if (!namespace.has(property.key.name)) {
  143. context.report({
  144. node: property,
  145. message: makeMessage(property.key, path) });
  146. continue;
  147. }
  148. path.push(property.key.name);
  149. var dependencyExportMap = namespace.get(property.key.name);
  150. // could be null when ignored or ambiguous
  151. if (dependencyExportMap !== null) {
  152. testKey(property.value, dependencyExportMap.namespace, path);
  153. }
  154. path.pop();
  155. }} catch (err) {_didIteratorError = true;_iteratorError = err;} finally {try {if (!_iteratorNormalCompletion && _iterator['return']) {_iterator['return']();}} finally {if (_didIteratorError) {throw _iteratorError;}}}
  156. }
  157. testKey(id, namespaces.get(init.name));
  158. }return VariableDeclarator;}(),
  159. JSXMemberExpression: function () {function JSXMemberExpression(_ref4) {var object = _ref4.object,property = _ref4.property;
  160. if (!namespaces.has(object.name)) {return;}
  161. var namespace = namespaces.get(object.name);
  162. if (!namespace.has(property.name)) {
  163. context.report({
  164. node: property,
  165. message: makeMessage(property, [object.name]) });
  166. }
  167. }return JSXMemberExpression;}() };
  168. }return namespaceRule;}() };
  169. //# 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declaredScope from 'eslint-module-utils/declaredScope';\nimport ExportMapBuilder from '../exportMap/builder';\nimport ExportMap from '../exportMap';\nimport importDeclaration from '../importDeclaration';\nimport docsUrl from '../docsUrl';\n\nfunction processBodyStatement(context, namespaces, declaration) {\n  if (declaration.type !== 'ImportDeclaration') { return; }\n\n  if (declaration.specifiers.length === 0) { return; }\n\n  const imports = ExportMapBuilder.get(declaration.source.value, context);\n  if (imports == null) { return null; }\n\n  if (imports.errors.length > 0) {\n    imports.reportErrors(context, declaration);\n    return;\n  }\n\n  declaration.specifiers.forEach((specifier) => {\n    switch (specifier.type) {\n      case 'ImportNamespaceSpecifier':\n        if (!imports.size) {\n          context.report(\n            specifier,\n            `No exported names found in module '${declaration.source.value}'.`,\n          );\n        }\n        namespaces.set(specifier.local.name, imports);\n        break;\n      case 'ImportDefaultSpecifier':\n      case 'ImportSpecifier': {\n        const meta = imports.get(\n        // default to 'default' for default https://i.imgur.com/nj6qAWy.jpg\n          specifier.imported ? specifier.imported.name || specifier.imported.value : 'default',\n        );\n        if (!meta || !meta.namespace) { break; }\n        namespaces.set(specifier.local.name, meta.namespace);\n        break;\n      }\n      default:\n    }\n  });\n}\n\nmodule.exports = {\n  meta: {\n    type: 'problem',\n    docs: {\n      category: 'Static analysis',\n      description: 'Ensure imported namespaces contain dereferenced properties as they are dereferenced.',\n      url: docsUrl('namespace'),\n    },\n\n    schema: [\n      {\n        type: 'object',\n        properties: {\n          allowComputed: {\n            description: 'If `false`, will report computed (and thus, un-lintable) references to namespace members.',\n            type: 'boolean',\n            default: false,\n          },\n        },\n        additionalProperties: false,\n      },\n    ],\n  },\n\n  create: function namespaceRule(context) {\n    // read options\n    const {\n      allowComputed = false,\n    } = context.options[0] || {};\n\n    const namespaces = new Map();\n\n    function makeMessage(last, namepath) {\n      return `'${last.name}' not found in ${namepath.length > 1 ? 'deeply ' : ''}imported namespace '${namepath.join('.')}'.`;\n    }\n\n    return {\n      // pick up all imports at body entry time, to properly respect hoisting\n      Program({ body }) {\n        body.forEach((x) => { processBodyStatement(context, namespaces, x); });\n      },\n\n      // same as above, but does not add names to local map\n      ExportNamespaceSpecifier(namespace) {\n        const declaration = importDeclaration(context, namespace);\n\n        const imports = ExportMapBuilder.get(declaration.source.value, context);\n        if (imports == null) { return null; }\n\n        if (imports.errors.length) {\n          imports.reportErrors(context, declaration);\n          return;\n        }\n\n        if (!imports.size) {\n          context.report(\n            namespace,\n            `No exported names found in module '${declaration.source.value}'.`,\n          );\n        }\n      },\n\n      // todo: check for possible redefinition\n\n      MemberExpression(dereference) {\n        if (dereference.object.type !== 'Identifier') { return; }\n        if (!namespaces.has(dereference.object.name)) { return; }\n        if (declaredScope(context, dereference.object.name, dereference) !== 'module') { return; }\n\n        if (dereference.parent.type === 'AssignmentExpression' && dereference.parent.left === dereference) {\n          context.report(\n            dereference.parent,\n            `Assignment to member of namespace '${dereference.object.name}'.`,\n          );\n        }\n\n        // go deep\n        let namespace = namespaces.get(dereference.object.name);\n        const namepath = [dereference.object.name];\n        // while property is namespace and parent is member expression, keep validating\n        while (namespace instanceof ExportMap && dereference.type === 'MemberExpression') {\n          if (dereference.computed) {\n            if (!allowComputed) {\n              context.report(\n                dereference.property,\n                `Unable to validate computed reference to imported namespace '${dereference.object.name}'.`,\n              );\n            }\n            return;\n          }\n\n          if (!namespace.has(dereference.property.name)) {\n            context.report(\n              dereference.property,\n              makeMessage(dereference.property, namepath),\n            );\n            break;\n          }\n\n          const exported = namespace.get(dereference.property.name);\n          if (exported == null) { return; }\n\n          // stash and pop\n          namepath.push(dereference.property.name);\n          namespace = exported.namespace;\n          dereference = dereference.parent;\n        }\n      },\n\n      VariableDeclarator({ id, init }) {\n        if (init == null) { return; }\n        if (init.type !== 'Identifier') { return; }\n        if (!namespaces.has(init.name)) { return; }\n\n        // check for redefinition in intermediate scopes\n        if (declaredScope(context, init.name, init) !== 'module') { return; }\n\n        // DFS traverse child namespaces\n        function testKey(pattern, namespace, path = [init.name]) {\n          if (!(namespace instanceof ExportMap)) { return; }\n\n          if (pattern.type !== 'ObjectPattern') { return; }\n\n          for (const property of pattern.properties) {\n            if (\n              property.type === 'ExperimentalRestProperty'\n              || property.type === 'RestElement'\n              || !property.key\n            ) {\n              continue;\n            }\n\n            if (property.key.type !== 'Identifier') {\n              context.report({\n                node: property,\n                message: 'Only destructure top-level names.',\n              });\n              continue;\n            }\n\n            if (!namespace.has(property.key.name)) {\n              context.report({\n                node: property,\n                message: makeMessage(property.key, path),\n              });\n              continue;\n            }\n\n            path.push(property.key.name);\n            const dependencyExportMap = namespace.get(property.key.name);\n            // could be null when ignored or ambiguous\n            if (dependencyExportMap !== null) {\n              testKey(property.value, dependencyExportMap.namespace, path);\n            }\n            path.pop();\n          }\n        }\n\n        testKey(id, namespaces.get(init.name));\n      },\n\n      JSXMemberExpression({ object, property }) {\n        if (!namespaces.has(object.name)) { return; }\n        const namespace = namespaces.get(object.name);\n        if (!namespace.has(property.name)) {\n          context.report({\n            node: property,\n            message: makeMessage(property, [object.name]),\n          });\n        }\n      },\n    };\n  },\n};\n"]}