65 lines
6.3 KiB
JavaScript
65 lines
6.3 KiB
JavaScript
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'use strict';
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/**
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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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const EXPORT_MESSAGE = 'Expected "export" or "export default"',
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IMPORT_MESSAGE = 'Expected "import" instead of "require()"';
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function allowPrimitive(node, context) {
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if (context.options.indexOf('allow-primitive-modules') < 0) 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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//------------------------------------------------------------------------------
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// Rule Definition
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//------------------------------------------------------------------------------
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module.exports = {
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meta: {
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docs: {}
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},
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create: function (context) {
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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, context)) 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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context.report({ node, message: EXPORT_MESSAGE });
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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.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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// 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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