namespace.js 26 KB

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  1. 'use strict';var _declaredScope = require('eslint-module-utils/declaredScope');var _declaredScope2 = _interopRequireDefault(_declaredScope);
  2. var _ExportMap = require('../ExportMap');var _ExportMap2 = _interopRequireDefault(_ExportMap);
  3. var _importDeclaration = require('../importDeclaration');var _importDeclaration2 = _interopRequireDefault(_importDeclaration);
  4. var _docsUrl = require('../docsUrl');var _docsUrl2 = _interopRequireDefault(_docsUrl);function _interopRequireDefault(obj) {return obj && obj.__esModule ? obj : { 'default': obj };}
  5. module.exports = {
  6. meta: {
  7. type: 'problem',
  8. docs: {
  9. url: (0, _docsUrl2['default'])('namespace') },
  10. schema: [
  11. {
  12. type: 'object',
  13. properties: {
  14. allowComputed: {
  15. description: 'If `false`, will report computed (and thus, un-lintable) references to namespace members.',
  16. type: 'boolean',
  17. 'default': false } },
  18. additionalProperties: false }] },
  19. create: function () {function namespaceRule(context) {
  20. // read options
  21. var _ref =
  22. context.options[0] || {},_ref$allowComputed = _ref.allowComputed,allowComputed = _ref$allowComputed === undefined ? false : _ref$allowComputed;
  23. var namespaces = new Map();
  24. function makeMessage(last, namepath) {
  25. return '\'' + String(last.name) + '\' not found in ' + (namepath.length > 1 ? 'deeply ' : '') + 'imported namespace \'' + String(namepath.join('.')) + '\'.';
  26. }
  27. return {
  28. // pick up all imports at body entry time, to properly respect hoisting
  29. Program: function () {function Program(_ref2) {var body = _ref2.body;
  30. function processBodyStatement(declaration) {
  31. if (declaration.type !== 'ImportDeclaration') return;
  32. if (declaration.specifiers.length === 0) return;
  33. var imports = _ExportMap2['default'].get(declaration.source.value, context);
  34. if (imports == null) return null;
  35. if (imports.errors.length) {
  36. imports.reportErrors(context, declaration);
  37. return;
  38. }var _iteratorNormalCompletion = true;var _didIteratorError = false;var _iteratorError = undefined;try {
  39. for (var _iterator = declaration.specifiers[Symbol.iterator](), _step; !(_iteratorNormalCompletion = (_step = _iterator.next()).done); _iteratorNormalCompletion = true) {var specifier = _step.value;
  40. switch (specifier.type) {
  41. case 'ImportNamespaceSpecifier':
  42. if (!imports.size) {
  43. context.report(
  44. specifier, 'No exported names found in module \'' + String(
  45. declaration.source.value) + '\'.');
  46. }
  47. namespaces.set(specifier.local.name, imports);
  48. break;
  49. case 'ImportDefaultSpecifier':
  50. case 'ImportSpecifier':{
  51. var meta = imports.get(
  52. // default to 'default' for default http://i.imgur.com/nj6qAWy.jpg
  53. specifier.imported ? specifier.imported.name : 'default');
  54. if (!meta || !meta.namespace) {break;}
  55. namespaces.set(specifier.local.name, meta.namespace);
  56. break;
  57. }}
  58. }} catch (err) {_didIteratorError = true;_iteratorError = err;} finally {try {if (!_iteratorNormalCompletion && _iterator['return']) {_iterator['return']();}} finally {if (_didIteratorError) {throw _iteratorError;}}}
  59. }
  60. body.forEach(processBodyStatement);
  61. }return Program;}(),
  62. // same as above, but does not add names to local map
  63. ExportNamespaceSpecifier: function () {function ExportNamespaceSpecifier(namespace) {
  64. var declaration = (0, _importDeclaration2['default'])(context);
  65. var imports = _ExportMap2['default'].get(declaration.source.value, context);
  66. if (imports == null) return null;
  67. if (imports.errors.length) {
  68. imports.reportErrors(context, declaration);
  69. return;
  70. }
  71. if (!imports.size) {
  72. context.report(
  73. namespace, 'No exported names found in module \'' + String(
  74. declaration.source.value) + '\'.');
  75. }
  76. }return ExportNamespaceSpecifier;}(),
  77. // todo: check for possible redefinition
  78. MemberExpression: function () {function MemberExpression(dereference) {
  79. if (dereference.object.type !== 'Identifier') return;
  80. if (!namespaces.has(dereference.object.name)) return;
  81. if ((0, _declaredScope2['default'])(context, dereference.object.name) !== 'module') return;
  82. if (dereference.parent.type === 'AssignmentExpression' && dereference.parent.left === dereference) {
  83. context.report(
  84. dereference.parent, 'Assignment to member of namespace \'' + String(
  85. dereference.object.name) + '\'.');
  86. }
  87. // go deep
  88. var namespace = namespaces.get(dereference.object.name);
  89. var namepath = [dereference.object.name];
  90. // while property is namespace and parent is member expression, keep validating
  91. while (namespace instanceof _ExportMap2['default'] && dereference.type === 'MemberExpression') {
  92. if (dereference.computed) {
  93. if (!allowComputed) {
  94. context.report(
  95. dereference.property, 'Unable to validate computed reference to imported namespace \'' + String(
  96. dereference.object.name) + '\'.');
  97. }
  98. return;
  99. }
  100. if (!namespace.has(dereference.property.name)) {
  101. context.report(
  102. dereference.property,
  103. makeMessage(dereference.property, namepath));
  104. break;
  105. }
  106. var exported = namespace.get(dereference.property.name);
  107. if (exported == null) return;
  108. // stash and pop
  109. namepath.push(dereference.property.name);
  110. namespace = exported.namespace;
  111. dereference = dereference.parent;
  112. }
  113. }return MemberExpression;}(),
  114. VariableDeclarator: function () {function VariableDeclarator(_ref3) {var id = _ref3.id,init = _ref3.init;
  115. if (init == null) return;
  116. if (init.type !== 'Identifier') return;
  117. if (!namespaces.has(init.name)) return;
  118. // check for redefinition in intermediate scopes
  119. if ((0, _declaredScope2['default'])(context, init.name) !== 'module') return;
  120. // DFS traverse child namespaces
  121. function testKey(pattern, namespace) {var path = arguments.length > 2 && arguments[2] !== undefined ? arguments[2] : [init.name];
  122. if (!(namespace instanceof _ExportMap2['default'])) return;
  123. if (pattern.type !== 'ObjectPattern') return;var _iteratorNormalCompletion2 = true;var _didIteratorError2 = false;var _iteratorError2 = undefined;try {
  124. for (var _iterator2 = pattern.properties[Symbol.iterator](), _step2; !(_iteratorNormalCompletion2 = (_step2 = _iterator2.next()).done); _iteratorNormalCompletion2 = true) {var property = _step2.value;
  125. if (
  126. property.type === 'ExperimentalRestProperty' ||
  127. property.type === 'RestElement' ||
  128. !property.key)
  129. {
  130. continue;
  131. }
  132. if (property.key.type !== 'Identifier') {
  133. context.report({
  134. node: property,
  135. message: 'Only destructure top-level names.' });
  136. continue;
  137. }
  138. if (!namespace.has(property.key.name)) {
  139. context.report({
  140. node: property,
  141. message: makeMessage(property.key, path) });
  142. continue;
  143. }
  144. path.push(property.key.name);
  145. var dependencyExportMap = namespace.get(property.key.name);
  146. // could be null when ignored or ambiguous
  147. if (dependencyExportMap !== null) {
  148. testKey(property.value, dependencyExportMap.namespace, path);
  149. }
  150. path.pop();
  151. }} catch (err) {_didIteratorError2 = true;_iteratorError2 = err;} finally {try {if (!_iteratorNormalCompletion2 && _iterator2['return']) {_iterator2['return']();}} finally {if (_didIteratorError2) {throw _iteratorError2;}}}
  152. }
  153. testKey(id, namespaces.get(init.name));
  154. }return VariableDeclarator;}(),
  155. JSXMemberExpression: function () {function JSXMemberExpression(_ref4) {var object = _ref4.object,property = _ref4.property;
  156. if (!namespaces.has(object.name)) return;
  157. var namespace = namespaces.get(object.name);
  158. if (!namespace.has(property.name)) {
  159. context.report({
  160. node: property,
  161. message: makeMessage(property, [object.name]) });
  162. }
  163. }return JSXMemberExpression;}() };
  164. }return namespaceRule;}() };
  165. //# 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declaredScope from 'eslint-module-utils/declaredScope';\nimport Exports from '../ExportMap';\nimport importDeclaration from '../importDeclaration';\nimport docsUrl from '../docsUrl';\n\nmodule.exports = {\n  meta: {\n    type: 'problem',\n    docs: {\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\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        function processBodyStatement(declaration) {\n          if (declaration.type !== 'ImportDeclaration') return;\n\n          if (declaration.specifiers.length === 0) return;\n\n          const imports = Exports.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          for (const specifier of declaration.specifiers) {\n            switch (specifier.type) {\n            case 'ImportNamespaceSpecifier':\n              if (!imports.size) {\n                context.report(\n                  specifier,\n                  `No exported names found in module '${declaration.source.value}'.`,\n                );\n              }\n              namespaces.set(specifier.local.name, imports);\n              break;\n            case 'ImportDefaultSpecifier':\n            case 'ImportSpecifier': {\n              const meta = imports.get(\n                // default to 'default' for default http://i.imgur.com/nj6qAWy.jpg\n                specifier.imported ? specifier.imported.name : 'default',\n              );\n              if (!meta || !meta.namespace) { break; }\n              namespaces.set(specifier.local.name, meta.namespace);\n              break;\n            }\n            }\n          }\n        }\n        body.forEach(processBodyStatement);\n      },\n\n      // same as above, but does not add names to local map\n      ExportNamespaceSpecifier(namespace) {\n        const declaration = importDeclaration(context);\n\n        const imports = Exports.get(declaration.source.value, context);\n        if (imports == null) return null;\n\n        if (imports.errors.length) {\n          imports.reportErrors(context, declaration);\n          return;\n        }\n\n        if (!imports.size) {\n          context.report(\n            namespace,\n            `No exported names found in module '${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) !== '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 '${dereference.object.name}'.`,\n          );\n        }\n\n        // go deep\n        let namespace = namespaces.get(dereference.object.name);\n        const namepath = [dereference.object.name];\n        // while property is namespace and parent is member expression, keep validating\n        while (namespace instanceof Exports && dereference.type === 'MemberExpression') {\n\n          if (dereference.computed) {\n            if (!allowComputed) {\n              context.report(\n                dereference.property,\n                `Unable to validate computed reference to imported namespace '${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\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) !== 'module') return;\n\n        // DFS traverse child namespaces\n        function testKey(pattern, namespace, path = [init.name]) {\n          if (!(namespace instanceof Exports)) 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"]}