bigint-crypto-utils/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 _docsUrl = require('../docsUrl');

var _docsUrl2 = _interopRequireDefault(_docsUrl);

function _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }

const enumValues = { enum: ['always', 'ignorePackages', 'never'] };
const patternProperties = {
  type: 'object',
  patternProperties: { '.*': enumValues }
};
const properties = {
  type: 'object',
  properties: {
    'pattern': patternProperties,
    'ignorePackages': { type: 'boolean' }
  }
};

function buildProperties(context) {

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

  context.options.forEach(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;
    }
  });

  return result;
}

module.exports = {
  meta: {
    type: 'suggestion',
    docs: {
      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 (context) {

    const props = buildProperties(context);

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

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

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

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

      return resolvedFileWithoutExtension === (0, _resolve2.default)(file, context);
    }

    function checkFileExtension(node) {
      const source = node.source;

      // bail if the declaration doesn't have a source, e.g. "export { foo };"

      if (!source) return;

      const importPath = source.value;

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

      const resolvedPath = (0, _resolve2.default)(importPath, context);

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

      // determine if this is a module
      const isPackageMain = (0, _importType.isExternalModuleMain)(importPath, context.settings) || (0, _importType.isScopedMain)(importPath);

      if (!extension || !importPath.endsWith(`.${extension}`)) {
        const extensionRequired = isUseOfExtensionRequired(extension, isPackageMain);
        const extensionForbidden = isUseOfExtensionForbidden(extension);
        if (extensionRequired && !extensionForbidden) {
          context.report({
            node: source,
            message: `Missing file extension ${extension ? `"${extension}" ` : ''}for "${importPath}"`
          });
        }
      } else if (extension) {
        if (isUseOfExtensionForbidden(extension) && isResolvableWithoutExtension(importPath)) {
          context.report({
            node: source,
            message: `Unexpected use of file extension "${extension}" for "${importPath}"`
          });
        }
      }
    }

    return {
      ImportDeclaration: checkFileExtension,
      ExportNamedDeclaration: checkFileExtension
    };
  }
};
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