node_modules/eslint-plugin-import/lib/rules/newline-after-import.js

'use strict';




var _staticRequire = require('../core/staticRequire');var _staticRequire2 = _interopRequireDefault(_staticRequire);
var _docsUrl = require('../docsUrl');var _docsUrl2 = _interopRequireDefault(_docsUrl);

var _debug = require('debug');var _debug2 = _interopRequireDefault(_debug);function _interopRequireDefault(obj) {return obj && obj.__esModule ? obj : { default: obj };}
const log = (0, _debug2.default)('eslint-plugin-import:rules:newline-after-import');

//------------------------------------------------------------------------------
// Rule Definition
//------------------------------------------------------------------------------
/**
 * @fileoverview Rule to enforce new line after import not followed by another import.
 * @author Radek Benkel
 */function containsNodeOrEqual(outerNode, innerNode) {return outerNode.range[0] <= innerNode.range[0] && outerNode.range[1] >= innerNode.range[1];}

function getScopeBody(scope) {
  if (scope.block.type === 'SwitchStatement') {
    log('SwitchStatement scopes not supported');
    return null;
  }const

  body = scope.block.body;
  if (body && body.type === 'BlockStatement') {
    return body.body;
  }

  return body;
}

function findNodeIndexInScopeBody(body, nodeToFind) {
  return body.findIndex(node => containsNodeOrEqual(node, nodeToFind));
}

function getLineDifference(node, nextNode) {
  return nextNode.loc.start.line - node.loc.end.line;
}

function isClassWithDecorator(node) {
  return node.type === 'ClassDeclaration' && node.decorators && node.decorators.length;
}

function isExportDefaultClass(node) {
  return node.type === 'ExportDefaultDeclaration' && node.declaration.type === 'ClassDeclaration';
}

module.exports = {
  meta: {
    type: 'layout',
    docs: {
      url: (0, _docsUrl2.default)('newline-after-import') },

    fixable: 'whitespace',
    schema: [
    {
      'type': 'object',
      'properties': {
        'count': {
          'type': 'integer',
          'minimum': 1 } },


      'additionalProperties': false }] },



  create: function (context) {
    let level = 0;
    const requireCalls = [];

    function checkForNewLine(node, nextNode, type) {
      if (isExportDefaultClass(nextNode)) {
        let classNode = nextNode.declaration;

        if (isClassWithDecorator(classNode)) {
          nextNode = classNode.decorators[0];
        }
      } else if (isClassWithDecorator(nextNode)) {
        nextNode = nextNode.decorators[0];
      }

      const options = context.options[0] || { count: 1 };
      const lineDifference = getLineDifference(node, nextNode);
      const EXPECTED_LINE_DIFFERENCE = options.count + 1;

      if (lineDifference < EXPECTED_LINE_DIFFERENCE) {
        let column = node.loc.start.column;

        if (node.loc.start.line !== node.loc.end.line) {
          column = 0;
        }

        context.report({
          loc: {
            line: node.loc.end.line,
            column },

          message: `Expected ${options.count} empty line${options.count > 1 ? 's' : ''} \
after ${type} statement not followed by another ${type}.`,
          fix: fixer => fixer.insertTextAfter(
          node,
          '\n'.repeat(EXPECTED_LINE_DIFFERENCE - lineDifference)) });


      }
    }

    function incrementLevel() {
      level++;
    }
    function decrementLevel() {
      level--;
    }

    function checkImport(node) {const
      parent = node.parent;
      const nodePosition = parent.body.indexOf(node);
      const nextNode = parent.body[nodePosition + 1];

      // skip "export import"s
      if (node.type === 'TSImportEqualsDeclaration' && node.isExport) {
        return;
      }

      if (nextNode && nextNode.type !== 'ImportDeclaration' && (nextNode.type !== 'TSImportEqualsDeclaration' || nextNode.isExport)) {
        checkForNewLine(node, nextNode, 'import');
      }
    }

    return {
      ImportDeclaration: checkImport,
      TSImportEqualsDeclaration: checkImport,
      CallExpression: function (node) {
        if ((0, _staticRequire2.default)(node) && level === 0) {
          requireCalls.push(node);
        }
      },
      'Program:exit': function () {
        log('exit processing for', context.getFilename());
        const scopeBody = getScopeBody(context.getScope());
        log('got scope:', scopeBody);

        requireCalls.forEach(function (node, index) {
          const nodePosition = findNodeIndexInScopeBody(scopeBody, node);
          log('node position in scope:', nodePosition);

          const statementWithRequireCall = scopeBody[nodePosition];
          const nextStatement = scopeBody[nodePosition + 1];
          const nextRequireCall = requireCalls[index + 1];

          if (nextRequireCall && containsNodeOrEqual(statementWithRequireCall, nextRequireCall)) {
            return;
          }

          if (nextStatement && (
          !nextRequireCall || !containsNodeOrEqual(nextStatement, nextRequireCall))) {

            checkForNewLine(statementWithRequireCall, nextStatement, 'require');
          }
        });
      },
      FunctionDeclaration: incrementLevel,
      FunctionExpression: incrementLevel,
      ArrowFunctionExpression: incrementLevel,
      BlockStatement: incrementLevel,
      ObjectExpression: incrementLevel,
      Decorator: incrementLevel,
      'FunctionDeclaration:exit': decrementLevel,
      'FunctionExpression:exit': decrementLevel,
      'ArrowFunctionExpression:exit': decrementLevel,
      'BlockStatement:exit': decrementLevel,
      'ObjectExpression:exit': decrementLevel,
      'Decorator:exit': decrementLevel };

  } };
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* @fileoverview Rule to enforce new line after import not followed by another import.\n * @author Radek Benkel\n */\n\nimport isStaticRequire from '../core/staticRequire'\nimport docsUrl from '../docsUrl'\n\nimport debug from 'debug'\nconst log = debug('eslint-plugin-import:rules:newline-after-import')\n\n//------------------------------------------------------------------------------\n// Rule Definition\n//------------------------------------------------------------------------------\n\nfunction containsNodeOrEqual(outerNode, innerNode) {\n    return outerNode.range[0] <= innerNode.range[0] && outerNode.range[1] >= innerNode.range[1]\n}\n\nfunction getScopeBody(scope) {\n    if (scope.block.type === 'SwitchStatement') {\n      log('SwitchStatement scopes not supported')\n      return null\n    }\n\n    const { body } = scope.block\n    if (body && body.type === 'BlockStatement') {\n        return body.body\n    }\n\n    return body\n}\n\nfunction findNodeIndexInScopeBody(body, nodeToFind) {\n    return body.findIndex((node) => containsNodeOrEqual(node, nodeToFind))\n}\n\nfunction getLineDifference(node, nextNode) {\n  return nextNode.loc.start.line - node.loc.end.line\n}\n\nfunction isClassWithDecorator(node) {\n  return node.type === 'ClassDeclaration' && node.decorators && node.decorators.length\n}\n\nfunction isExportDefaultClass(node) {\n  return node.type === 'ExportDefaultDeclaration' && node.declaration.type === 'ClassDeclaration'\n}\n\nmodule.exports = {\n  meta: {\n    type: 'layout',\n    docs: {\n      url: docsUrl('newline-after-import'),\n    },\n    fixable: 'whitespace',\n    schema: [\n      {\n        'type': 'object',\n        'properties': {\n          'count': {\n            'type': 'integer',\n            'minimum': 1,\n          },\n        },\n        'additionalProperties': false,\n      },\n    ],\n  },\n  create: function (context) {\n    let level = 0\n    const requireCalls = []\n\n    function checkForNewLine(node, nextNode, type) {\n      if (isExportDefaultClass(nextNode)) {\n        let classNode = nextNode.declaration\n\n        if (isClassWithDecorator(classNode)) {\n          nextNode = classNode.decorators[0]\n        }\n      } else if (isClassWithDecorator(nextNode)) {\n        nextNode = nextNode.decorators[0]\n      }\n\n      const options = context.options[0] || { count: 1 }\n      const lineDifference = getLineDifference(node, nextNode)\n      const EXPECTED_LINE_DIFFERENCE = options.count + 1\n\n      if (lineDifference < EXPECTED_LINE_DIFFERENCE) {\n        let column = node.loc.start.column\n\n        if (node.loc.start.line !== node.loc.end.line) {\n          column = 0\n        }\n\n        context.report({\n          loc: {\n            line: node.loc.end.line,\n            column,\n          },\n          message: `Expected ${options.count} empty line${options.count > 1 ? 's' : ''} \\\nafter ${type} statement not followed by another ${type}.`,\n          fix: fixer => fixer.insertTextAfter(\n            node,\n            '\\n'.repeat(EXPECTED_LINE_DIFFERENCE - lineDifference)\n          ),\n        })\n      }\n    }\n\n    function incrementLevel() {\n      level++\n    }\n    function decrementLevel() {\n      level--\n    }\n\n    function checkImport(node) {\n        const { parent } = node\n        const nodePosition = parent.body.indexOf(node)\n        const nextNode = parent.body[nodePosition + 1]\n        \n        // skip \"export import\"s\n        if (node.type === 'TSImportEqualsDeclaration' && node.isExport) {\n          return\n        }\n\n        if (nextNode && nextNode.type !== 'ImportDeclaration' && (nextNode.type !== 'TSImportEqualsDeclaration' || nextNode.isExport)) {\n          checkForNewLine(node, nextNode, 'import')\n        }\n    }\n\n    return {\n      ImportDeclaration: checkImport,\n      TSImportEqualsDeclaration: checkImport,\n      CallExpression: function(node) {\n        if (isStaticRequire(node) && level === 0) {\n          requireCalls.push(node)\n        }\n      },\n      'Program:exit': function () {\n        log('exit processing for', context.getFilename())\n        const scopeBody = getScopeBody(context.getScope())\n        log('got scope:', scopeBody)\n\n        requireCalls.forEach(function (node, index) {\n          const nodePosition = findNodeIndexInScopeBody(scopeBody, node)\n          log('node position in scope:', nodePosition)\n\n          const statementWithRequireCall = scopeBody[nodePosition]\n          const nextStatement = scopeBody[nodePosition + 1]\n          const nextRequireCall = requireCalls[index + 1]\n\n          if (nextRequireCall && containsNodeOrEqual(statementWithRequireCall, nextRequireCall)) {\n            return\n          }\n\n          if (nextStatement &&\n             (!nextRequireCall || !containsNodeOrEqual(nextStatement, nextRequireCall))) {\n\n            checkForNewLine(statementWithRequireCall, nextStatement, 'require')\n          }\n        })\n      },\n      FunctionDeclaration: incrementLevel,\n      FunctionExpression: incrementLevel,\n      ArrowFunctionExpression: incrementLevel,\n      BlockStatement: incrementLevel,\n      ObjectExpression: incrementLevel,\n      Decorator: incrementLevel,\n      'FunctionDeclaration:exit': decrementLevel,\n      'FunctionExpression:exit': decrementLevel,\n      'ArrowFunctionExpression:exit': decrementLevel,\n      'BlockStatement:exit': decrementLevel,\n      'ObjectExpression:exit': decrementLevel,\n      'Decorator:exit': decrementLevel,\n    }\n  },\n}\n"]}