bigint-crypto-utils/node_modules/eslint-plugin-import/lib/rules/first.js

'use strict';

var _docsUrl = require('../docsUrl');

var _docsUrl2 = _interopRequireDefault(_docsUrl);

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

module.exports = {
  meta: {
    type: 'suggestion',
    docs: {
      url: (0, _docsUrl2.default)('first')
    },
    fixable: 'code'
  },

  create: function (context) {
    function isPossibleDirective(node) {
      return node.type === 'ExpressionStatement' && node.expression.type === 'Literal' && typeof node.expression.value === 'string';
    }

    return {
      'Program': function (n) {
        const body = n.body,
              absoluteFirst = context.options[0] === 'absolute-first',
              message = 'Import in body of module; reorder to top.',
              sourceCode = context.getSourceCode(),
              originSourceCode = sourceCode.getText();
        let nonImportCount = 0,
            anyExpressions = false,
            anyRelative = false,
            lastLegalImp = null,
            errorInfos = [],
            shouldSort = true,
            lastSortNodesIndex = 0;
        body.forEach(function (node, index) {
          if (!anyExpressions && isPossibleDirective(node)) {
            return;
          }

          anyExpressions = true;

          if (node.type === 'ImportDeclaration') {
            if (absoluteFirst) {
              if (/^\./.test(node.source.value)) {
                anyRelative = true;
              } else if (anyRelative) {
                context.report({
                  node: node.source,
                  message: 'Absolute imports should come before relative imports.'
                });
              }
            }
            if (nonImportCount > 0) {
              for (let variable of context.getDeclaredVariables(node)) {
                if (!shouldSort) break;
                const references = variable.references;
                if (references.length) {
                  for (let reference of references) {
                    if (reference.identifier.range[0] < node.range[1]) {
                      shouldSort = false;
                      break;
                    }
                  }
                }
              }
              shouldSort && (lastSortNodesIndex = errorInfos.length);
              errorInfos.push({
                node,
                range: [body[index - 1].range[1], node.range[1]]
              });
            } else {
              lastLegalImp = node;
            }
          } else {
            nonImportCount++;
          }
        });
        if (!errorInfos.length) return;
        errorInfos.forEach(function (errorInfo, index) {
          const node = errorInfo.node,
                infos = {
            node,
            message
          };
          if (index < lastSortNodesIndex) {
            infos.fix = function (fixer) {
              return fixer.insertTextAfter(node, '');
            };
          } else if (index === lastSortNodesIndex) {
            const sortNodes = errorInfos.slice(0, lastSortNodesIndex + 1);
            infos.fix = function (fixer) {
              const removeFixers = sortNodes.map(function (_errorInfo) {
                return fixer.removeRange(_errorInfo.range);
              }),
                    range = [0, removeFixers[removeFixers.length - 1].range[1]];
              let insertSourceCode = sortNodes.map(function (_errorInfo) {
                const nodeSourceCode = String.prototype.slice.apply(originSourceCode, _errorInfo.range);
                if (/\S/.test(nodeSourceCode[0])) {
                  return '\n' + nodeSourceCode;
                }
                return nodeSourceCode;
              }).join(''),
                  insertFixer = null,
                  replaceSourceCode = '';
              if (!lastLegalImp) {
                insertSourceCode = insertSourceCode.trim() + insertSourceCode.match(/^(\s+)/)[0];
              }
              insertFixer = lastLegalImp ? fixer.insertTextAfter(lastLegalImp, insertSourceCode) : fixer.insertTextBefore(body[0], insertSourceCode);
              const fixers = [insertFixer].concat(removeFixers);
              fixers.forEach(function (computedFixer, i) {
                replaceSourceCode += originSourceCode.slice(fixers[i - 1] ? fixers[i - 1].range[1] : 0, computedFixer.range[0]) + computedFixer.text;
              });
              return fixer.replaceTextRange(range, replaceSourceCode);
            };
          }
          context.report(infos);
        });
      }
    };
  }
};
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