111 lines
11 KiB
JavaScript
111 lines
11 KiB
JavaScript
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'use strict';
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var _docsUrl = require('../docsUrl');
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var _docsUrl2 = _interopRequireDefault(_docsUrl);
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function _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }
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const EXPORT_MESSAGE = 'Expected "export" or "export default"',
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IMPORT_MESSAGE = 'Expected "import" instead of "require()"'; /**
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* @fileoverview Rule to prefer ES6 to CJS
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* @author Jamund Ferguson
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*/
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function normalizeLegacyOptions(options) {
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if (options.indexOf('allow-primitive-modules') >= 0) {
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return { allowPrimitiveModules: true };
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}
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return options[0] || {};
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}
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function allowPrimitive(node, options) {
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if (!options.allowPrimitiveModules) return false;
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if (node.parent.type !== 'AssignmentExpression') return false;
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return node.parent.right.type !== 'ObjectExpression';
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}
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function allowRequire(node, options) {
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return options.allowRequire;
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}
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//------------------------------------------------------------------------------
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// Rule Definition
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//------------------------------------------------------------------------------
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const schemaString = { enum: ['allow-primitive-modules'] };
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const schemaObject = {
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type: 'object',
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properties: {
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allowPrimitiveModules: { 'type': 'boolean' },
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allowRequire: { 'type': 'boolean' }
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},
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additionalProperties: false
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};
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module.exports = {
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meta: {
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type: 'suggestion',
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docs: {
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url: (0, _docsUrl2.default)('no-commonjs')
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},
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schema: {
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anyOf: [{
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type: 'array',
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items: [schemaString],
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additionalItems: false
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}, {
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type: 'array',
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items: [schemaObject],
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additionalItems: false
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}]
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}
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},
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create: function (context) {
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const options = normalizeLegacyOptions(context.options);
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return {
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'MemberExpression': function (node) {
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// module.exports
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if (node.object.name === 'module' && node.property.name === 'exports') {
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if (allowPrimitive(node, options)) return;
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context.report({ node, message: EXPORT_MESSAGE });
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}
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// exports.
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if (node.object.name === 'exports') {
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const isInScope = context.getScope().variables.some(variable => variable.name === 'exports');
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if (!isInScope) {
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context.report({ node, message: EXPORT_MESSAGE });
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}
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}
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},
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'CallExpression': function (call) {
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if (context.getScope().type !== 'module') return;
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if (call.parent.type !== 'ExpressionStatement' && call.parent.type !== 'VariableDeclarator' && call.parent.type !== 'AssignmentExpression') return;
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if (call.callee.type !== 'Identifier') return;
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if (call.callee.name !== 'require') return;
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if (call.arguments.length !== 1) return;
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var module = call.arguments[0];
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if (module.type !== 'Literal') return;
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if (typeof module.value !== 'string') return;
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if (allowRequire(call, options)) return;
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// keeping it simple: all 1-string-arg `require` calls are reported
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context.report({
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node: call.callee,
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message: IMPORT_MESSAGE
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});
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}
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};
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}
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};
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