webhook/node_modules/eslint-plugin-import/lib/rules/no-commonjs.js

'use strict';




var _docsUrl = require('../docsUrl');var _docsUrl2 = _interopRequireDefault(_docsUrl);function _interopRequireDefault(obj) {return obj && obj.__esModule ? obj : { 'default': obj };}

var EXPORT_MESSAGE = 'Expected "export" or "export default"'; /**
                                                               * @fileoverview Rule to prefer ES6 to CJS
                                                               * @author Jamund Ferguson
                                                               */var IMPORT_MESSAGE = 'Expected "import" instead of "require()"';function normalizeLegacyOptions(options) {
  if (options.indexOf('allow-primitive-modules') >= 0) {
    return { allowPrimitiveModules: true };
  }
  return options[0] || {};
}

function allowPrimitive(node, options) {
  if (!options.allowPrimitiveModules) return false;
  if (node.parent.type !== 'AssignmentExpression') return false;
  return node.parent.right.type !== 'ObjectExpression';
}

function allowRequire(node, options) {
  return options.allowRequire;
}

function allowConditionalRequire(node, options) {
  return options.allowConditionalRequire !== false;
}

function validateScope(scope) {
  return scope.variableScope.type === 'module';
}

// https://github.com/estree/estree/blob/HEAD/es5.md
function isConditional(node) {
  if (
  node.type === 'IfStatement' ||
  node.type === 'TryStatement' ||
  node.type === 'LogicalExpression' ||
  node.type === 'ConditionalExpression')
  return true;
  if (node.parent) return isConditional(node.parent);
  return false;
}

function isLiteralString(node) {
  return node.type === 'Literal' && typeof node.value === 'string' ||
  node.type === 'TemplateLiteral' && node.expressions.length === 0;
}

//------------------------------------------------------------------------------
// Rule Definition
//------------------------------------------------------------------------------

var schemaString = { 'enum': ['allow-primitive-modules'] };
var schemaObject = {
  type: 'object',
  properties: {
    allowPrimitiveModules: { 'type': 'boolean' },
    allowRequire: { 'type': 'boolean' },
    allowConditionalRequire: { 'type': 'boolean' } },

  additionalProperties: false };


module.exports = {
  meta: {
    type: 'suggestion',
    docs: {
      url: (0, _docsUrl2['default'])('no-commonjs') },


    schema: {
      anyOf: [
      {
        type: 'array',
        items: [schemaString],
        additionalItems: false },

      {
        type: 'array',
        items: [schemaObject],
        additionalItems: false }] } },





  create: function () {function create(context) {
      var options = normalizeLegacyOptions(context.options);

      return {

        'MemberExpression': function () {function MemberExpression(node) {

            // module.exports
            if (node.object.name === 'module' && node.property.name === 'exports') {
              if (allowPrimitive(node, options)) return;
              context.report({ node: node, message: EXPORT_MESSAGE });
            }

            // exports.
            if (node.object.name === 'exports') {
              var isInScope = context.getScope().
              variables.
              some(function (variable) {return variable.name === 'exports';});
              if (!isInScope) {
                context.report({ node: node, message: EXPORT_MESSAGE });
              }
            }

          }return MemberExpression;}(),
        'CallExpression': function () {function CallExpression(call) {
            if (!validateScope(context.getScope())) return;

            if (call.callee.type !== 'Identifier') return;
            if (call.callee.name !== 'require') return;

            if (call.arguments.length !== 1) return;
            if (!isLiteralString(call.arguments[0])) return;

            if (allowRequire(call, options)) return;

            if (allowConditionalRequire(call, options) && isConditional(call.parent)) return;

            // keeping it simple: all 1-string-arg `require` calls are reported
            context.report({
              node: call.callee,
              message: IMPORT_MESSAGE });

          }return CallExpression;}() };


    }return create;}() };
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