eslint-plugin-stylistic-compat/dist/rules/multiline-ternary.js

Compatibility version of @stylistic/eslint-plugin for Node.js >= 12 and ESLint v8

'use strict';

var utils = require('../utils.js');
require('@babel/runtime-corejs3/core-js/object/from-entries');
require('@babel/runtime-corejs3/core-js/instance/map');
require('@babel/runtime-corejs3/core-js/instance/filter');
require('@babel/runtime-corejs3/core-js/object/entries');
require('@babel/runtime-corejs3/core-js/set');
require('@babel/runtime-corejs3/core-js/instance/flags');
require('@babel/runtime-corejs3/core-js/instance/includes');
require('@babel/runtime-corejs3/core-js/instance/starts-with');
require('../vendor.js');
require('@babel/runtime-corejs3/core-js/object/assign');
require('@babel/runtime-corejs3/core-js/object/create');
require('@babel/runtime-corejs3/core-js/object/freeze');
require('@babel/runtime-corejs3/core-js/array/is-array');
require('@babel/runtime-corejs3/core-js/instance/last-index-of');
require('@babel/runtime-corejs3/core-js/instance/slice');
require('@babel/runtime-corejs3/core-js/object/define-properties');
require('@babel/runtime-corejs3/core-js/object/keys');
require('@babel/runtime-corejs3/core-js/instance/index-of');
require('@babel/runtime-corejs3/core-js/instance/at');
require('@babel/runtime-corejs3/core-js/symbol');
require('@babel/runtime-corejs3/core-js/symbol/iterator');
require('@babel/runtime-corejs3/core-js/parse-int');
require('@babel/runtime-corejs3/core-js/parse-float');
require('@babel/runtime-corejs3/core-js/weak-map');
require('@babel/runtime-corejs3/core-js/object/define-property');
require('@babel/runtime-corejs3/core-js/global-this');
require('@babel/runtime-corejs3/core-js/instance/for-each');
require('@babel/runtime-corejs3/core-js/array/from');
require('eslint/use-at-your-own-risk');
require('eslint');
require('@babel/runtime-corejs3/core-js/object/get-own-property-descriptor');
require('@babel/runtime-corejs3/core-js/map');
require('@babel/runtime-corejs3/core-js/instance/some');
require('@babel/runtime-corejs3/core-js/instance/find');
require('@babel/runtime-corejs3/core-js/instance/every');
require('@babel/runtime-corejs3/core-js/instance/sort');
require('@babel/runtime-corejs3/core-js/array/of');
require('@babel/runtime-corejs3/core-js/instance/concat');
require('@babel/runtime-corejs3/core-js/instance/entries');
require('@babel/runtime-corejs3/core-js/instance/find-index');
require('@babel/runtime-corejs3/core-js/instance/flat');
require('@babel/runtime-corejs3/core-js/instance/keys');
require('@babel/runtime-corejs3/core-js/instance/values');
require('@babel/runtime-corejs3/core-js/object/get-own-property-names');
require('@babel/runtime-corejs3/core-js/number/is-finite');
require('@babel/runtime-corejs3/core-js/number/is-nan');
require('@babel/runtime-corejs3/core-js/number/parse-float');
require('@babel/runtime-corejs3/core-js/number/parse-int');
require('@babel/runtime-corejs3/core-js/object/is');
require('@babel/runtime-corejs3/core-js/object/is-extensible');
require('@babel/runtime-corejs3/core-js/object/is-frozen');
require('@babel/runtime-corejs3/core-js/object/is-sealed');
require('@babel/runtime-corejs3/core-js/object/values');
require('@babel/runtime-corejs3/core-js/string/from-code-point');
require('@babel/runtime-corejs3/core-js/string/raw');
require('@babel/runtime-corejs3/core-js/instance/code-point-at');
require('@babel/runtime-corejs3/core-js/instance/ends-with');
require('@babel/runtime-corejs3/core-js/instance/pad-end');
require('@babel/runtime-corejs3/core-js/instance/pad-start');
require('@babel/runtime-corejs3/core-js/instance/trim');
require('@babel/runtime-corejs3/core-js/instance/trim-end');
require('@babel/runtime-corejs3/core-js/instance/trim-left');
require('@babel/runtime-corejs3/core-js/instance/trim-right');
require('@babel/runtime-corejs3/core-js/instance/trim-start');
require('@babel/runtime-corejs3/core-js/symbol/for');
require('@babel/runtime-corejs3/core-js/symbol/key-for');
require('@babel/runtime-corejs3/core-js/object/prevent-extensions');
require('@babel/runtime-corejs3/core-js/object/seal');
require('@babel/runtime-corejs3/core-js/object/get-prototype-of');
require('@babel/runtime-corejs3/core-js/symbol/replace');
require('@babel/runtime-corejs3/core-js/instance/bind');
require('@babel/runtime-corejs3/core-js/instance/splice');
require('@babel/runtime-corejs3/core-js/instance/repeat');
require('@babel/runtime-corejs3/core-js/instance/reduce');
require('@babel/runtime-corejs3/core-js/instance/reverse');

var multilineTernary = utils.createRule({
  name: "multiline-ternary",
  package: "js",
  meta: {
    type: "layout",
    docs: {
      description: "Enforce newlines between operands of ternary expressions"
    },
    schema: [{
      type: "string",
      enum: ["always", "always-multiline", "never"]
    }, {
      type: "object",
      properties: {
        ignoreJSX: {
          type: "boolean",
          default: false
        }
      }
    }],
    messages: {
      expectedTestCons: "Expected newline between test and consequent of ternary expression.",
      expectedConsAlt: "Expected newline between consequent and alternate of ternary expression.",
      unexpectedTestCons: "Unexpected newline between test and consequent of ternary expression.",
      unexpectedConsAlt: "Unexpected newline between consequent and alternate of ternary expression."
    },
    fixable: "whitespace"
  },
  create(context) {
    const sourceCode = context.sourceCode;
    const multiline = context.options[0] !== "never";
    const allowSingleLine = context.options[0] === "always-multiline";
    const IGNORE_JSX = context.options[1] && context.options[1].ignoreJSX;
    return {
      ConditionalExpression(node) {
        const questionToken = sourceCode.getTokenAfter(node.test, utils.isNotClosingParenToken);
        const colonToken = sourceCode.getTokenAfter(node.consequent, utils.isNotClosingParenToken);
        const firstTokenOfTest = sourceCode.getFirstToken(node);
        const lastTokenOfTest = sourceCode.getTokenBefore(questionToken);
        const firstTokenOfConsequent = sourceCode.getTokenAfter(questionToken);
        const lastTokenOfConsequent = sourceCode.getTokenBefore(colonToken);
        const firstTokenOfAlternate = sourceCode.getTokenAfter(colonToken);
        const areTestAndConsequentOnSameLine = utils.isTokenOnSameLine(lastTokenOfTest, firstTokenOfConsequent);
        const areConsequentAndAlternateOnSameLine = utils.isTokenOnSameLine(lastTokenOfConsequent, firstTokenOfAlternate);
        const hasComments = !!sourceCode.getCommentsInside(node).length;
        if (IGNORE_JSX) {
          if (node.parent.type === "JSXElement" || node.parent.type === "JSXFragment" || node.parent.type === "JSXExpressionContainer") {
            return null;
          }
        }
        if (!multiline) {
          if (!areTestAndConsequentOnSameLine) {
            context.report({
              node: node.test,
              loc: {
                start: firstTokenOfTest.loc.start,
                end: lastTokenOfTest.loc.end
              },
              messageId: "unexpectedTestCons",
              fix(fixer) {
                if (hasComments) return null;
                const fixers = [];
                const areTestAndQuestionOnSameLine = utils.isTokenOnSameLine(lastTokenOfTest, questionToken);
                const areQuestionAndConsOnSameLine = utils.isTokenOnSameLine(questionToken, firstTokenOfConsequent);
                if (!areTestAndQuestionOnSameLine) fixers.push(fixer.removeRange([lastTokenOfTest.range[1], questionToken.range[0]]));
                if (!areQuestionAndConsOnSameLine) fixers.push(fixer.removeRange([questionToken.range[1], firstTokenOfConsequent.range[0]]));
                return fixers;
              }
            });
          }
          if (!areConsequentAndAlternateOnSameLine) {
            context.report({
              node: node.consequent,
              loc: {
                start: firstTokenOfConsequent.loc.start,
                end: lastTokenOfConsequent.loc.end
              },
              messageId: "unexpectedConsAlt",
              fix(fixer) {
                if (hasComments) return null;
                const fixers = [];
                const areConsAndColonOnSameLine = utils.isTokenOnSameLine(lastTokenOfConsequent, colonToken);
                const areColonAndAltOnSameLine = utils.isTokenOnSameLine(colonToken, firstTokenOfAlternate);
                if (!areConsAndColonOnSameLine) fixers.push(fixer.removeRange([lastTokenOfConsequent.range[1], colonToken.range[0]]));
                if (!areColonAndAltOnSameLine) fixers.push(fixer.removeRange([colonToken.range[1], firstTokenOfAlternate.range[0]]));
                return fixers;
              }
            });
          }
        } else {
          if (allowSingleLine && node.loc.start.line === node.loc.end.line) return;
          if (areTestAndConsequentOnSameLine) {
            context.report({
              node: node.test,
              loc: {
                start: firstTokenOfTest.loc.start,
                end: lastTokenOfTest.loc.end
              },
              messageId: "expectedTestCons",
              fix: fixer => hasComments ? null : fixer.replaceTextRange([lastTokenOfTest.range[1], questionToken.range[0]], "\n")
            });
          }
          if (areConsequentAndAlternateOnSameLine) {
            context.report({
              node: node.consequent,
              loc: {
                start: firstTokenOfConsequent.loc.start,
                end: lastTokenOfConsequent.loc.end
              },
              messageId: "expectedConsAlt",
              fix: fixer => hasComments ? null : fixer.replaceTextRange([lastTokenOfConsequent.range[1], colonToken.range[0]], "\n")
            });
          }
        }
      }
    };
  }
});

module.exports = multilineTernary;