odin-js-fundamentals-part-5/node_modules/eslint-plugin-import/lib/rules/extensions.js

'use strict';var _path = require('path');var _path2 = _interopRequireDefault(_path);

var _resolve = require('eslint-module-utils/resolve');var _resolve2 = _interopRequireDefault(_resolve);
var _importType = require('../core/importType');
var _moduleVisitor = require('eslint-module-utils/moduleVisitor');var _moduleVisitor2 = _interopRequireDefault(_moduleVisitor);
var _docsUrl = require('../docsUrl');var _docsUrl2 = _interopRequireDefault(_docsUrl);function _interopRequireDefault(obj) {return obj && obj.__esModule ? obj : { 'default': obj };}

var enumValues = { 'enum': ['always', 'ignorePackages', 'never'] };
var patternProperties = {
  type: 'object',
  patternProperties: { '.*': enumValues } };

var properties = {
  type: 'object',
  properties: {
    pattern: patternProperties,
    ignorePackages: { type: 'boolean' } } };



function buildProperties(context) {

  var result = {
    defaultConfig: 'never',
    pattern: {},
    ignorePackages: false };


  context.options.forEach(function (obj) {

    // If this is a string, set defaultConfig to its value
    if (typeof obj === 'string') {
      result.defaultConfig = obj;
      return;
    }

    // If this is not the new structure, transfer all props to result.pattern
    if (obj.pattern === undefined && obj.ignorePackages === undefined) {
      Object.assign(result.pattern, obj);
      return;
    }

    // If pattern is provided, transfer all props
    if (obj.pattern !== undefined) {
      Object.assign(result.pattern, obj.pattern);
    }

    // If ignorePackages is provided, transfer it to result
    if (obj.ignorePackages !== undefined) {
      result.ignorePackages = obj.ignorePackages;
    }
  });

  if (result.defaultConfig === 'ignorePackages') {
    result.defaultConfig = 'always';
    result.ignorePackages = true;
  }

  return result;
}

module.exports = {
  meta: {
    type: 'suggestion',
    docs: {
      category: 'Style guide',
      description: 'Ensure consistent use of file extension within the import path.',
      url: (0, _docsUrl2['default'])('extensions') },


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

      {
        type: 'array',
        items: [
        enumValues,
        properties],

        additionalItems: false },

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

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

      {
        type: 'array',
        items: [
        enumValues,
        patternProperties],

        additionalItems: false }] } },





  create: function () {function create(context) {

      var props = buildProperties(context);

      function getModifier(extension) {
        return props.pattern[extension] || props.defaultConfig;
      }

      function isUseOfExtensionRequired(extension, isPackage) {
        return getModifier(extension) === 'always' && (!props.ignorePackages || !isPackage);
      }

      function isUseOfExtensionForbidden(extension) {
        return getModifier(extension) === 'never';
      }

      function isResolvableWithoutExtension(file) {
        var extension = _path2['default'].extname(file);
        var fileWithoutExtension = file.slice(0, -extension.length);
        var resolvedFileWithoutExtension = (0, _resolve2['default'])(fileWithoutExtension, context);

        return resolvedFileWithoutExtension === (0, _resolve2['default'])(file, context);
      }

      function isExternalRootModule(file) {
        if (file === '.' || file === '..') {return false;}
        var slashCount = file.split('/').length - 1;

        if (slashCount === 0) {return true;}
        if ((0, _importType.isScoped)(file) && slashCount <= 1) {return true;}
        return false;
      }

      function checkFileExtension(source, node) {
        // bail if the declaration doesn't have a source, e.g. "export { foo };", or if it's only partially typed like in an editor
        if (!source || !source.value) {return;}

        var importPathWithQueryString = source.value;

        // don't enforce anything on builtins
        if ((0, _importType.isBuiltIn)(importPathWithQueryString, context.settings)) {return;}

        var importPath = importPathWithQueryString.replace(/\?(.*)$/, '');

        // don't enforce in root external packages as they may have names with `.js`.
        // Like `import Decimal from decimal.js`)
        if (isExternalRootModule(importPath)) {return;}

        var resolvedPath = (0, _resolve2['default'])(importPath, context);

        // get extension from resolved path, if possible.
        // for unresolved, use source value.
        var extension = _path2['default'].extname(resolvedPath || importPath).substring(1);

        // determine if this is a module
        var isPackage = (0, _importType.isExternalModule)(
        importPath,
        (0, _resolve2['default'])(importPath, context),
        context) ||
        (0, _importType.isScoped)(importPath);

        if (!extension || !importPath.endsWith('.' + String(extension))) {
          // ignore type-only imports and exports
          if (node.importKind === 'type' || node.exportKind === 'type') {return;}
          var extensionRequired = isUseOfExtensionRequired(extension, isPackage);
          var extensionForbidden = isUseOfExtensionForbidden(extension);
          if (extensionRequired && !extensionForbidden) {
            context.report({
              node: source,
              message: 'Missing file extension ' + (
              extension ? '"' + String(extension) + '" ' : '') + 'for "' + String(importPathWithQueryString) + '"' });

          }
        } else if (extension) {
          if (isUseOfExtensionForbidden(extension) && isResolvableWithoutExtension(importPath)) {
            context.report({
              node: source,
              message: 'Unexpected use of file extension "' + String(extension) + '" for "' + String(importPathWithQueryString) + '"' });

          }
        }
      }

      return (0, _moduleVisitor2['default'])(checkFileExtension, { commonjs: true });
    }return create;}() };
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