eslint-plugin-stylistic-compat/dist/rules/space-unary-ops.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 spaceUnaryOps = utils.createRule({
  name: "space-unary-ops",
  package: "js",
  meta: {
    type: "layout",
    docs: {
      description: "Enforce consistent spacing before or after unary operators"
    },
    fixable: "whitespace",
    schema: [{
      type: "object",
      properties: {
        words: {
          type: "boolean",
          default: true
        },
        nonwords: {
          type: "boolean",
          default: false
        },
        overrides: {
          type: "object",
          additionalProperties: {
            type: "boolean"
          }
        }
      },
      additionalProperties: false
    }],
    messages: {
      unexpectedBefore: "Unexpected space before unary operator '{{operator}}'.",
      unexpectedAfter: "Unexpected space after unary operator '{{operator}}'.",
      unexpectedAfterWord: "Unexpected space after unary word operator '{{word}}'.",
      wordOperator: "Unary word operator '{{word}}' must be followed by whitespace.",
      operator: "Unary operator '{{operator}}' must be followed by whitespace.",
      beforeUnaryExpressions: "Space is required before unary expressions '{{token}}'."
    }
  },
  create(context) {
    const options = context.options[0] || {
      words: true,
      nonwords: false
    };
    const sourceCode = context.sourceCode;
    function isFirstBangInBangBangExpression(node) {
      return node && node.type === "UnaryExpression" && node.argument && node.argument.type === "UnaryExpression" && node.argument.operator === "!";
    }
    function overrideExistsForOperator(operator) {
      return options.overrides && Object.prototype.hasOwnProperty.call(options.overrides, operator);
    }
    function overrideEnforcesSpaces(operator) {
      var _options$overrides;
      return (_options$overrides = options.overrides) == null ? undefined : _options$overrides[operator];
    }
    function verifyWordHasSpaces(node, firstToken, secondToken, word) {
      if (secondToken.range[0] === firstToken.range[1]) {
        context.report({
          node,
          messageId: "wordOperator",
          data: {
            word
          },
          fix(fixer) {
            return fixer.insertTextAfter(firstToken, " ");
          }
        });
      }
    }
    function verifyWordDoesntHaveSpaces(node, firstToken, secondToken, word) {
      if (utils.canTokensBeAdjacent(firstToken, secondToken)) {
        if (secondToken.range[0] > firstToken.range[1]) {
          context.report({
            node,
            messageId: "unexpectedAfterWord",
            data: {
              word
            },
            fix(fixer) {
              return fixer.removeRange([firstToken.range[1], secondToken.range[0]]);
            }
          });
        }
      }
    }
    function checkUnaryWordOperatorForSpaces(node, firstToken, secondToken, word) {
      if (overrideExistsForOperator(word)) {
        if (overrideEnforcesSpaces(word)) verifyWordHasSpaces(node, firstToken, secondToken, word);else verifyWordDoesntHaveSpaces(node, firstToken, secondToken, word);
      } else if (options.words) {
        verifyWordHasSpaces(node, firstToken, secondToken, word);
      } else {
        verifyWordDoesntHaveSpaces(node, firstToken, secondToken, word);
      }
    }
    function checkForSpacesAfterYield(node) {
      const tokens = sourceCode.getFirstTokens(node, 3);
      const word = "yield";
      if (!node.argument || node.delegate) return;
      checkUnaryWordOperatorForSpaces(node, tokens[0], tokens[1], word);
    }
    function checkForSpacesAfterAwait(node) {
      const tokens = sourceCode.getFirstTokens(node, 3);
      checkUnaryWordOperatorForSpaces(node, tokens[0], tokens[1], "await");
    }
    function verifyNonWordsHaveSpaces(node, firstToken, secondToken) {
      if ("prefix" in node && node.prefix) {
        if (isFirstBangInBangBangExpression(node)) return;
        if (firstToken.range[1] === secondToken.range[0]) {
          context.report({
            node,
            messageId: "operator",
            data: {
              operator: firstToken.value
            },
            fix(fixer) {
              return fixer.insertTextAfter(firstToken, " ");
            }
          });
        }
      } else {
        if (firstToken.range[1] === secondToken.range[0]) {
          context.report({
            node,
            messageId: "beforeUnaryExpressions",
            data: {
              token: secondToken.value
            },
            fix(fixer) {
              return fixer.insertTextBefore(secondToken, " ");
            }
          });
        }
      }
    }
    function verifyNonWordsDontHaveSpaces(node, firstToken, secondToken) {
      if ("prefix" in node && node.prefix) {
        if (secondToken.range[0] > firstToken.range[1]) {
          context.report({
            node,
            messageId: "unexpectedAfter",
            data: {
              operator: firstToken.value
            },
            fix(fixer) {
              if (utils.canTokensBeAdjacent(firstToken, secondToken)) return fixer.removeRange([firstToken.range[1], secondToken.range[0]]);
              return null;
            }
          });
        }
      } else {
        if (secondToken.range[0] > firstToken.range[1]) {
          context.report({
            node,
            messageId: "unexpectedBefore",
            data: {
              operator: secondToken.value
            },
            fix(fixer) {
              return fixer.removeRange([firstToken.range[1], secondToken.range[0]]);
            }
          });
        }
      }
    }
    function checkForSpaces(node) {
      const tokens = node.type === "UpdateExpression" && !node.prefix ? sourceCode.getLastTokens(node, 2) : sourceCode.getFirstTokens(node, 2);
      const firstToken = tokens[0];
      const secondToken = tokens[1];
      if ((node.type === "NewExpression" || node.prefix) && firstToken.type === "Keyword") {
        checkUnaryWordOperatorForSpaces(node, firstToken, secondToken, firstToken.value);
        return;
      }
      const operator = "prefix" in node && node.prefix ? tokens[0].value : tokens[1].value;
      if (overrideExistsForOperator(operator)) {
        if (overrideEnforcesSpaces(operator)) verifyNonWordsHaveSpaces(node, firstToken, secondToken);else verifyNonWordsDontHaveSpaces(node, firstToken, secondToken);
      } else if (options.nonwords) {
        verifyNonWordsHaveSpaces(node, firstToken, secondToken);
      } else {
        verifyNonWordsDontHaveSpaces(node, firstToken, secondToken);
      }
    }
    return {
      UnaryExpression: checkForSpaces,
      UpdateExpression: checkForSpaces,
      NewExpression: checkForSpaces,
      YieldExpression: checkForSpacesAfterYield,
      AwaitExpression: checkForSpacesAfterAwait
    };
  }
});

module.exports = spaceUnaryOps;