141 lines
14 KiB
JavaScript
141 lines
14 KiB
JavaScript
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'use strict';
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var _docsUrl = require('../docsUrl');var _docsUrl2 = _interopRequireDefault(_docsUrl);function _interopRequireDefault(obj) {return obj && obj.__esModule ? obj : { 'default': obj };}
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var EXPORT_MESSAGE = 'Expected "export" or "export default"'; /**
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* @fileoverview Rule to prefer ES6 to CJS
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* @author Jamund Ferguson
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*/var IMPORT_MESSAGE = 'Expected "import" instead of "require()"';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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function allowConditionalRequire(node, options) {
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return options.allowConditionalRequire !== false;
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}
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function validateScope(scope) {
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return scope.variableScope.type === 'module';
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}
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// https://github.com/estree/estree/blob/HEAD/es5.md
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function isConditional(node) {
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if (
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node.type === 'IfStatement' ||
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node.type === 'TryStatement' ||
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node.type === 'LogicalExpression' ||
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node.type === 'ConditionalExpression')
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{
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return true;
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}
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if (node.parent) {return isConditional(node.parent);}
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return false;
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}
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function isLiteralString(node) {
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return node.type === 'Literal' && typeof node.value === 'string' ||
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node.type === 'TemplateLiteral' && node.expressions.length === 0;
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}
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//------------------------------------------------------------------------------
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// Rule Definition
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//------------------------------------------------------------------------------
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var schemaString = { 'enum': ['allow-primitive-modules'] };
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var 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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allowConditionalRequire: { type: 'boolean' } },
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additionalProperties: false };
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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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category: 'Module systems',
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description: 'Forbid CommonJS `require` calls and `module.exports` or `exports.*`.',
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url: (0, _docsUrl2['default'])('no-commonjs') },
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schema: {
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anyOf: [
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{
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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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create: function () {function create(context) {
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var options = normalizeLegacyOptions(context.options);
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return {
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MemberExpression: function () {function MemberExpression(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: 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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var isInScope = context.getScope().
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variables.
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some(function (variable) {return variable.name === 'exports';});
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if (!isInScope) {
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context.report({ node: node, message: EXPORT_MESSAGE });
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}
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}
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}return MemberExpression;}(),
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CallExpression: function () {function CallExpression(call) {
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if (!validateScope(context.getScope())) {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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if (!isLiteralString(call.arguments[0])) {return;}
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if (allowRequire(call, options)) {return;}
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if (allowConditionalRequire(call, options) && isConditional(call.parent)) {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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}return CallExpression;}() };
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}return create;}() };
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