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

'use strict';




var _docsUrl = require('../docsUrl');var _docsUrl2 = _interopRequireDefault(_docsUrl);function _interopRequireDefault(obj) {return obj && obj.__esModule ? obj : { default: obj };}function _toConsumableArray(arr) {if (Array.isArray(arr)) {for (var i = 0, arr2 = Array(arr.length); i < arr.length; i++) arr2[i] = arr[i];return arr2;} else {return Array.from(arr);}} /**
                                                                                                                                                                                                                                                                                                                                                                             * @fileoverview Rule to disallow namespace import
                                                                                                                                                                                                                                                                                                                                                                             * @author Radek Benkel
                                                                                                                                                                                                                                                                                                                                                                             */ //------------------------------------------------------------------------------
// Rule Definition
//------------------------------------------------------------------------------

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

    fixable: 'code',
    schema: [] },


  create: function (context) {
    return {
      'ImportNamespaceSpecifier': function (node) {
        const scopeVariables = context.getScope().variables;
        const namespaceVariable = scopeVariables.find(variable =>
        variable.defs[0].node === node);

        const namespaceReferences = namespaceVariable.references;
        const namespaceIdentifiers = namespaceReferences.map(reference => reference.identifier);
        const canFix = namespaceIdentifiers.length > 0 && !usesNamespaceAsObject(namespaceIdentifiers);

        context.report({
          node,
          message: `Unexpected namespace import.`,
          fix: canFix && (fixer => {
            const scopeManager = context.getSourceCode().scopeManager;
            const fixes = [];

            // Pass 1: Collect variable names that are already in scope for each reference we want
            // to transform, so that we can be sure that we choose non-conflicting import names
            const importNameConflicts = {};
            namespaceIdentifiers.forEach(identifier => {
              const parent = identifier.parent;
              if (parent && parent.type === 'MemberExpression') {
                const importName = getMemberPropertyName(parent);
                const localConflicts = getVariableNamesInScope(scopeManager, parent);
                if (!importNameConflicts[importName]) {
                  importNameConflicts[importName] = localConflicts;
                } else {
                  localConflicts.forEach(c => importNameConflicts[importName].add(c));
                }
              }
            });

            // Choose new names for each import
            const importNames = Object.keys(importNameConflicts);
            const importLocalNames = generateLocalNames(
            importNames,
            importNameConflicts,
            namespaceVariable.name);


            // Replace the ImportNamespaceSpecifier with a list of ImportSpecifiers
            const namedImportSpecifiers = importNames.map(importName =>
            importName === importLocalNames[importName] ?
            importName :
            `${importName} as ${importLocalNames[importName]}`);

            fixes.push(fixer.replaceText(node, `{ ${namedImportSpecifiers.join(', ')} }`));

            // Pass 2: Replace references to the namespace with references to the named imports
            namespaceIdentifiers.forEach(identifier => {
              const parent = identifier.parent;
              if (parent && parent.type === 'MemberExpression') {
                const importName = getMemberPropertyName(parent);
                fixes.push(fixer.replaceText(parent, importLocalNames[importName]));
              }
            });

            return fixes;
          }) });

      } };

  }


  /**
     * @param {Identifier[]} namespaceIdentifiers
     * @returns {boolean} `true` if the namespace variable is more than just a glorified constant
     */ };
function usesNamespaceAsObject(namespaceIdentifiers) {
  return !namespaceIdentifiers.every(identifier => {
    const parent = identifier.parent;

    // `namespace.x` or `namespace['x']`
    return (
      parent && parent.type === 'MemberExpression' && (
      parent.property.type === 'Identifier' || parent.property.type === 'Literal'));

  });
}

/**
   * @param {MemberExpression} memberExpression
   * @returns {string} the name of the member in the object expression, e.g. the `x` in `namespace.x`
   */
function getMemberPropertyName(memberExpression) {
  return memberExpression.property.type === 'Identifier' ?
  memberExpression.property.name :
  memberExpression.property.value;
}

/**
   * @param {ScopeManager} scopeManager
   * @param {ASTNode} node
   * @return {Set<string>}
   */
function getVariableNamesInScope(scopeManager, node) {
  let currentNode = node;
  let scope = scopeManager.acquire(currentNode);
  while (scope == null) {
    currentNode = currentNode.parent;
    scope = scopeManager.acquire(currentNode, true);
  }
  return new Set([].concat(_toConsumableArray(
  scope.variables.map(variable => variable.name)), _toConsumableArray(
  scope.upper.variables.map(variable => variable.name))));

}

/**
   *
   * @param {*} names
   * @param {*} nameConflicts
   * @param {*} namespaceName
   */
function generateLocalNames(names, nameConflicts, namespaceName) {
  const localNames = {};
  names.forEach(name => {
    let localName;
    if (!nameConflicts[name].has(name)) {
      localName = name;
    } else if (!nameConflicts[name].has(`${namespaceName}_${name}`)) {
      localName = `${namespaceName}_${name}`;
    } else {
      for (let i = 1; i < Infinity; i++) {
        if (!nameConflicts[name].has(`${namespaceName}_${name}_${i}`)) {
          localName = `${namespaceName}_${name}_${i}`;
          break;
        }
      }
    }
    localNames[name] = localName;
  });
  return localNames;
}
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