Gecko [ gandhischool.edu.np ]

Name	Size	Permission
utils	[ DIR ]	dr-xr-xr-x
accessor-pairs.js	11.71 KB	-rw-rw-rw-
array-bracket-newline.js	9.45 KB	-rw-rw-rw-
array-bracket-spacing.js	8.96 KB	-rw-rw-rw-
array-callback-return.js	15.5 KB	-rw-rw-rw-
array-element-newline.js	10.9 KB	-rw-rw-rw-
arrow-body-style.js	12.67 KB	-rw-rw-rw-
arrow-parens.js	7.61 KB	-rw-rw-rw-
arrow-spacing.js	5.17 KB	-rw-rw-rw-
block-scoped-var.js	4.24 KB	-rw-rw-rw-
block-spacing.js	5.8 KB	-rw-rw-rw-
brace-style.js	8.04 KB	-rw-rw-rw-
callback-return.js	6.41 KB	-rw-rw-rw-
camelcase.js	13.66 KB	-rw-rw-rw-
capitalized-comments.js	10.48 KB	-rw-rw-rw-
class-methods-use-this.js	6.02 KB	-rw-rw-rw-
comma-dangle.js	13.53 KB	-rw-rw-rw-
comma-spacing.js	6.87 KB	-rw-rw-rw-
comma-style.js	11.72 KB	-rw-rw-rw-
complexity.js	5.6 KB	-rw-rw-rw-
computed-property-spacing.js	7.45 KB	-rw-rw-rw-
consistent-return.js	6.91 KB	-rw-rw-rw-
consistent-this.js	4.99 KB	-rw-rw-rw-
constructor-super.js	15.19 KB	-rw-rw-rw-
curly.js	18.93 KB	-rw-rw-rw-
default-case-last.js	1.21 KB	-rw-rw-rw-
default-case.js	2.77 KB	-rw-rw-rw-
default-param-last.js	1.55 KB	-rw-rw-rw-
dot-location.js	3.43 KB	-rw-rw-rw-
dot-notation.js	6.6 KB	-rw-rw-rw-
eol-last.js	4.01 KB	-rw-rw-rw-
eqeqeq.js	5.65 KB	-rw-rw-rw-
for-direction.js	5 KB	-rw-rw-rw-
func-call-spacing.js	9.77 KB	-rw-rw-rw-
func-name-matching.js	9.91 KB	-rw-rw-rw-
func-names.js	6.3 KB	-rw-rw-rw-
func-style.js	2.85 KB	-rw-rw-rw-
function-call-argument-newline...	4.31 KB	-rw-rw-rw-
function-paren-newline.js	11.61 KB	-rw-rw-rw-
generator-star-spacing.js	7.01 KB	-rw-rw-rw-
getter-return.js	6.87 KB	-rw-rw-rw-
global-require.js	2.44 KB	-rw-rw-rw-
grouped-accessor-pairs.js	7.46 KB	-rw-rw-rw-
guard-for-in.js	2.31 KB	-rw-rw-rw-
handle-callback-err.js	3.06 KB	-rw-rw-rw-
id-blacklist.js	7.54 KB	-rw-rw-rw-
id-denylist.js	7.04 KB	-rw-rw-rw-
id-length.js	6.51 KB	-rw-rw-rw-
id-match.js	11.04 KB	-rw-rw-rw-
implicit-arrow-linebreak.js	2.88 KB	-rw-rw-rw-
indent-legacy.js	43.59 KB	-rw-rw-rw-
indent.js	76.54 KB	-rw-rw-rw-
index.js	17.89 KB	-rw-rw-rw-
init-declarations.js	4.38 KB	-rw-rw-rw-
jsx-quotes.js	2.98 KB	-rw-rw-rw-
key-spacing.js	26.36 KB	-rw-rw-rw-
keyword-spacing.js	23.7 KB	-rw-rw-rw-
line-comment-position.js	4.09 KB	-rw-rw-rw-
linebreak-style.js	3.48 KB	-rw-rw-rw-
lines-around-comment.js	17.85 KB	-rw-rw-rw-
lines-around-directive.js	7.6 KB	-rw-rw-rw-
lines-between-class-members.js	11.15 KB	-rw-rw-rw-
logical-assignment-operators.j...	21.38 KB	-rw-rw-rw-
max-classes-per-file.js	2.58 KB	-rw-rw-rw-
max-depth.js	4.68 KB	-rw-rw-rw-
max-len.js	15.81 KB	-rw-rw-rw-
max-lines-per-function.js	6.92 KB	-rw-rw-rw-
max-lines.js	5.95 KB	-rw-rw-rw-
max-nested-callbacks.js	3.48 KB	-rw-rw-rw-
max-params.js	3.1 KB	-rw-rw-rw-
max-statements-per-line.js	7.35 KB	-rw-rw-rw-
max-statements.js	5.81 KB	-rw-rw-rw-
multiline-comment-style.js	21.22 KB	-rw-rw-rw-
multiline-ternary.js	7.62 KB	-rw-rw-rw-
new-cap.js	9.3 KB	-rw-rw-rw-
new-parens.js	3.19 KB	-rw-rw-rw-
newline-after-var.js	9.46 KB	-rw-rw-rw-
newline-before-return.js	7.87 KB	-rw-rw-rw-
newline-per-chained-call.js	4.04 KB	-rw-rw-rw-
no-alert.js	4.25 KB	-rw-rw-rw-
no-array-constructor.js	4.38 KB	-rw-rw-rw-
no-async-promise-executor.js	1.11 KB	-rw-rw-rw-
no-await-in-loop.js	2.73 KB	-rw-rw-rw-
no-bitwise.js	3.5 KB	-rw-rw-rw-
no-buffer-constructor.js	1.4 KB	-rw-rw-rw-
no-caller.js	1.18 KB	-rw-rw-rw-
no-case-declarations.js	1.83 KB	-rw-rw-rw-
no-catch-shadow.js	2.51 KB	-rw-rw-rw-
no-class-assign.js	1.73 KB	-rw-rw-rw-
no-compare-neg-zero.js	1.9 KB	-rw-rw-rw-
no-cond-assign.js	5.52 KB	-rw-rw-rw-
no-confusing-arrow.js	2.9 KB	-rw-rw-rw-
no-console.js	7.17 KB	-rw-rw-rw-
no-const-assign.js	1.52 KB	-rw-rw-rw-
no-constant-binary-expression....	20.41 KB	-rw-rw-rw-
no-constant-condition.js	4.77 KB	-rw-rw-rw-
no-constructor-return.js	1.57 KB	-rw-rw-rw-
no-continue.js	886 B	-rw-rw-rw-
no-control-regex.js	4.58 KB	-rw-rw-rw-
no-debugger.js	959 B	-rw-rw-rw-
no-delete-var.js	983 B	-rw-rw-rw-
no-div-regex.js	1.42 KB	-rw-rw-rw-
no-dupe-args.js	2.36 KB	-rw-rw-rw-
no-dupe-class-members.js	3.29 KB	-rw-rw-rw-
no-dupe-else-if.js	4.51 KB	-rw-rw-rw-
no-dupe-keys.js	3.88 KB	-rw-rw-rw-
no-duplicate-case.js	2.04 KB	-rw-rw-rw-
no-duplicate-imports.js	9.28 KB	-rw-rw-rw-
no-else-return.js	15.71 KB	-rw-rw-rw-
no-empty-character-class.js	2.23 KB	-rw-rw-rw-
no-empty-function.js	4.63 KB	-rw-rw-rw-
no-empty-pattern.js	2.38 KB	-rw-rw-rw-
no-empty-static-block.js	1.22 KB	-rw-rw-rw-
no-empty.js	3.08 KB	-rw-rw-rw-
no-eq-null.js	1.22 KB	-rw-rw-rw-
no-eval.js	9.34 KB	-rw-rw-rw-
no-ex-assign.js	1.43 KB	-rw-rw-rw-
no-extend-native.js	6.5 KB	-rw-rw-rw-
no-extra-bind.js	7.39 KB	-rw-rw-rw-
no-extra-boolean-cast.js	11.7 KB	-rw-rw-rw-
no-extra-label.js	5.04 KB	-rw-rw-rw-
no-extra-parens.js	52.03 KB	-rw-rw-rw-
no-extra-semi.js	4.99 KB	-rw-rw-rw-
no-fallthrough.js	6.89 KB	-rw-rw-rw-
no-floating-decimal.js	2.42 KB	-rw-rw-rw-
no-func-assign.js	2.2 KB	-rw-rw-rw-
no-global-assign.js	2.97 KB	-rw-rw-rw-
no-implicit-coercion.js	12.97 KB	-rw-rw-rw-
no-implicit-globals.js	5.48 KB	-rw-rw-rw-
no-implied-eval.js	4.54 KB	-rw-rw-rw-
no-import-assign.js	7.25 KB	-rw-rw-rw-
no-inline-comments.js	3.29 KB	-rw-rw-rw-
no-inner-declarations.js	2.96 KB	-rw-rw-rw-
no-invalid-regexp.js	6.3 KB	-rw-rw-rw-
no-invalid-this.js	5.01 KB	-rw-rw-rw-
no-irregular-whitespace.js	9.93 KB	-rw-rw-rw-
no-iterator.js	1.28 KB	-rw-rw-rw-
no-label-var.js	2.36 KB	-rw-rw-rw-
no-labels.js	4.38 KB	-rw-rw-rw-
no-lone-blocks.js	4.23 KB	-rw-rw-rw-
no-lonely-if.js	3.65 KB	-rw-rw-rw-
no-loop-func.js	6.16 KB	-rw-rw-rw-
no-loss-of-precision.js	8.07 KB	-rw-rw-rw-
no-magic-numbers.js	9.26 KB	-rw-rw-rw-
no-misleading-character-class....	9.87 KB	-rw-rw-rw-
no-mixed-operators.js	7.58 KB	-rw-rw-rw-
no-mixed-requires.js	7.26 KB	-rw-rw-rw-
no-mixed-spaces-and-tabs.js	3.67 KB	-rw-rw-rw-
no-multi-assign.js	1.76 KB	-rw-rw-rw-
no-multi-spaces.js	5.04 KB	-rw-rw-rw-
no-multi-str.js	1.8 KB	-rw-rw-rw-
no-multiple-empty-lines.js	6.25 KB	-rw-rw-rw-
no-native-reassign.js	2.99 KB	-rw-rw-rw-
no-negated-condition.js	2.9 KB	-rw-rw-rw-
no-negated-in-lhs.js	1.16 KB	-rw-rw-rw-
no-nested-ternary.js	1.12 KB	-rw-rw-rw-
no-new-func.js	2.98 KB	-rw-rw-rw-
no-new-native-nonconstructor.j...	2.11 KB	-rw-rw-rw-
no-new-object.js	1.72 KB	-rw-rw-rw-
no-new-require.js	1.17 KB	-rw-rw-rw-
no-new-symbol.js	1.58 KB	-rw-rw-rw-
no-new-wrappers.js	1.7 KB	-rw-rw-rw-
no-new.js	1.04 KB	-rw-rw-rw-
no-nonoctal-decimal-escape.js	5.47 KB	-rw-rw-rw-
no-obj-calls.js	2.7 KB	-rw-rw-rw-
no-object-constructor.js	3.55 KB	-rw-rw-rw-
no-octal-escape.js	1.44 KB	-rw-rw-rw-
no-octal.js	1.01 KB	-rw-rw-rw-
no-param-reassign.js	8.42 KB	-rw-rw-rw-
no-path-concat.js	1.68 KB	-rw-rw-rw-
no-plusplus.js	3.1 KB	-rw-rw-rw-
no-process-env.js	1.19 KB	-rw-rw-rw-
no-process-exit.js	1.24 KB	-rw-rw-rw-
no-promise-executor-return.js	8.54 KB	-rw-rw-rw-
no-proto.js	1.21 KB	-rw-rw-rw-
no-prototype-builtins.js	5.83 KB	-rw-rw-rw-
no-redeclare.js	5.67 KB	-rw-rw-rw-
no-regex-spaces.js	6.42 KB	-rw-rw-rw-
no-restricted-exports.js	7.1 KB	-rw-rw-rw-
no-restricted-globals.js	3.79 KB	-rw-rw-rw-
no-restricted-imports.js	16.6 KB	-rw-rw-rw-
no-restricted-modules.js	6.9 KB	-rw-rw-rw-
no-restricted-properties.js	6.17 KB	-rw-rw-rw-
no-restricted-syntax.js	2.17 KB	-rw-rw-rw-
no-return-assign.js	2.62 KB	-rw-rw-rw-
no-return-await.js	5.02 KB	-rw-rw-rw-
no-script-url.js	1.72 KB	-rw-rw-rw-
no-self-assign.js	5.5 KB	-rw-rw-rw-
no-self-compare.js	1.81 KB	-rw-rw-rw-
no-sequences.js	4.67 KB	-rw-rw-rw-
no-setter-return.js	7.07 KB	-rw-rw-rw-
no-shadow-restricted-names.js	2.16 KB	-rw-rw-rw-
no-shadow.js	12.31 KB	-rw-rw-rw-
no-spaced-func.js	2.42 KB	-rw-rw-rw-
no-sparse-arrays.js	1.17 KB	-rw-rw-rw-
no-sync.js	1.65 KB	-rw-rw-rw-
no-tabs.js	2.45 KB	-rw-rw-rw-
no-template-curly-in-string.js	1.15 KB	-rw-rw-rw-
no-ternary.js	889 B	-rw-rw-rw-
no-this-before-super.js	10.87 KB	-rw-rw-rw-
no-throw-literal.js	1.28 KB	-rw-rw-rw-
no-trailing-spaces.js	6.72 KB	-rw-rw-rw-
no-undef-init.js	2.35 KB	-rw-rw-rw-
no-undef.js	2.3 KB	-rw-rw-rw-
no-undefined.js	2.24 KB	-rw-rw-rw-
no-underscore-dangle.js	12.79 KB	-rw-rw-rw-
no-unexpected-multiline.js	4.19 KB	-rw-rw-rw-
no-unmodified-loop-condition.j...	11.65 KB	-rw-rw-rw-
no-unneeded-ternary.js	6.79 KB	-rw-rw-rw-
no-unreachable-loop.js	5.94 KB	-rw-rw-rw-
no-unreachable.js	8.9 KB	-rw-rw-rw-
no-unsafe-finally.js	3.91 KB	-rw-rw-rw-
no-unsafe-negation.js	4.63 KB	-rw-rw-rw-
no-unsafe-optional-chaining.js	6.97 KB	-rw-rw-rw-
no-unused-expressions.js	6.08 KB	-rw-rw-rw-
no-unused-labels.js	4.55 KB	-rw-rw-rw-
no-unused-private-class-member...	7.68 KB	-rw-rw-rw-
no-unused-vars.js	27 KB	-rw-rw-rw-
no-use-before-define.js	10.88 KB	-rw-rw-rw-
no-useless-backreference.js	7.57 KB	-rw-rw-rw-
no-useless-call.js	2.99 KB	-rw-rw-rw-
no-useless-catch.js	1.71 KB	-rw-rw-rw-
no-useless-computed-key.js	6.3 KB	-rw-rw-rw-
no-useless-concat.js	3.24 KB	-rw-rw-rw-
no-useless-constructor.js	5.75 KB	-rw-rw-rw-
no-useless-escape.js	13.18 KB	-rw-rw-rw-
no-useless-rename.js	5.88 KB	-rw-rw-rw-
no-useless-return.js	14.01 KB	-rw-rw-rw-
no-var.js	12.14 KB	-rw-rw-rw-
no-void.js	1.72 KB	-rw-rw-rw-
no-warning-comments.js	7.12 KB	-rw-rw-rw-
no-whitespace-before-property....	3.92 KB	-rw-rw-rw-
no-with.js	876 B	-rw-rw-rw-
nonblock-statement-body-positi...	4.56 KB	-rw-rw-rw-
object-curly-newline.js	11.53 KB	-rw-rw-rw-
object-curly-spacing.js	11.61 KB	-rw-rw-rw-
object-property-newline.js	3.8 KB	-rw-rw-rw-
object-shorthand.js	21.78 KB	-rw-rw-rw-
one-var-declaration-per-line.j...	2.86 KB	-rw-rw-rw-
one-var.js	22.37 KB	-rw-rw-rw-
operator-assignment.js	8.58 KB	-rw-rw-rw-
operator-linebreak.js	9.88 KB	-rw-rw-rw-
padded-blocks.js	10.79 KB	-rw-rw-rw-
padding-line-between-statement...	18.85 KB	-rw-rw-rw-
prefer-arrow-callback.js	14.33 KB	-rw-rw-rw-
prefer-const.js	18.27 KB	-rw-rw-rw-
prefer-destructuring.js	10.93 KB	-rw-rw-rw-
prefer-exponentiation-operator...	7.58 KB	-rw-rw-rw-
prefer-named-capture-group.js	5.84 KB	-rw-rw-rw-
prefer-numeric-literals.js	5.7 KB	-rw-rw-rw-
prefer-object-has-own.js	4.24 KB	-rw-rw-rw-
prefer-object-spread.js	10.45 KB	-rw-rw-rw-
prefer-promise-reject-errors.j...	5.37 KB	-rw-rw-rw-
prefer-reflect.js	4.59 KB	-rw-rw-rw-
prefer-regex-literals.js	18.06 KB	-rw-rw-rw-
prefer-rest-params.js	3.39 KB	-rw-rw-rw-
prefer-spread.js	2.78 KB	-rw-rw-rw-
prefer-template.js	11.15 KB	-rw-rw-rw-
quote-props.js	11.82 KB	-rw-rw-rw-
quotes.js	12.41 KB	-rw-rw-rw-
radix.js	6.75 KB	-rw-rw-rw-
require-atomic-updates.js	11.1 KB	-rw-rw-rw-
require-await.js	3.27 KB	-rw-rw-rw-
require-jsdoc.js	3.77 KB	-rw-rw-rw-
require-unicode-regexp.js	5.1 KB	-rw-rw-rw-
require-yield.js	2.05 KB	-rw-rw-rw-
rest-spread-spacing.js	4.03 KB	-rw-rw-rw-
semi-spacing.js	8.71 KB	-rw-rw-rw-
semi-style.js	5.24 KB	-rw-rw-rw-
semi.js	15.87 KB	-rw-rw-rw-
sort-imports.js	10.62 KB	-rw-rw-rw-
sort-keys.js	7.16 KB	-rw-rw-rw-
sort-vars.js	4.04 KB	-rw-rw-rw-
space-before-blocks.js	7.14 KB	-rw-rw-rw-
space-before-function-paren.js	5.87 KB	-rw-rw-rw-
space-in-parens.js	10.55 KB	-rw-rw-rw-
space-infix-ops.js	6.42 KB	-rw-rw-rw-
space-unary-ops.js	12.39 KB	-rw-rw-rw-
spaced-comment.js	12.85 KB	-rw-rw-rw-
strict.js	10.37 KB	-rw-rw-rw-
switch-colon-spacing.js	4.9 KB	-rw-rw-rw-
symbol-description.js	2.04 KB	-rw-rw-rw-
template-curly-spacing.js	4.74 KB	-rw-rw-rw-
template-tag-spacing.js	3.08 KB	-rw-rw-rw-
unicode-bom.js	2.15 KB	-rw-rw-rw-
use-isnan.js	4.64 KB	-rw-rw-rw-
valid-jsdoc.js	20.08 KB	-rw-rw-rw-
valid-typeof.js	4.92 KB	-rw-rw-rw-
vars-on-top.js	5.17 KB	-rw-rw-rw-
wrap-iife.js	7.8 KB	-rw-rw-rw-
wrap-regex.js	1.85 KB	-rw-rw-rw-
yield-star-spacing.js	4.31 KB	-rw-rw-rw-
yoda.js	11.89 KB	-rw-rw-rw-

Code Editor : logical-assignment-operators.js

/**
 * @fileoverview Rule to replace assignment expressions with logical operator assignment
 * @author Daniel Martens
 */
"use strict";

//------------------------------------------------------------------------------
// Requirements
//------------------------------------------------------------------------------
const astUtils = require("./utils/ast-utils.js");

//------------------------------------------------------------------------------
// Helpers
//------------------------------------------------------------------------------

const baseTypes = new Set(["Identifier", "Super", "ThisExpression"]);

/**
 * Returns true iff either "undefined" or a void expression (eg. "void 0")
 * @param {ASTNode} expression Expression to check
 * @param {import('eslint-scope').Scope} scope Scope of the expression
 * @returns {boolean} True iff "undefined" or "void ..."
 */
function isUndefined(expression, scope) {
    if (expression.type === "Identifier" && expression.name === "undefined") {
        return astUtils.isReferenceToGlobalVariable(scope, expression);
    }

return expression.type === "UnaryExpression" &&
           expression.operator === "void" &&
           expression.argument.type === "Literal" &&
           expression.argument.value === 0;
}

/**
 * Returns true iff the reference is either an identifier or member expression
 * @param {ASTNode} expression Expression to check
 * @returns {boolean} True for identifiers and member expressions
 */
function isReference(expression) {
    return (expression.type === "Identifier" && expression.name !== "undefined") ||
           expression.type === "MemberExpression";
}

/**
 * Returns true iff the expression checks for nullish with loose equals.
 * Examples: value == null, value == void 0
 * @param {ASTNode} expression Test condition
 * @param {import('eslint-scope').Scope} scope Scope of the expression
 * @returns {boolean} True iff implicit nullish comparison
 */
function isImplicitNullishComparison(expression, scope) {
    if (expression.type !== "BinaryExpression" || expression.operator !== "==") {
        return false;
    }

const reference = isReference(expression.left) ? "left" : "right";
    const nullish = reference === "left" ? "right" : "left";

return isReference(expression[reference]) &&
           (astUtils.isNullLiteral(expression[nullish]) || isUndefined(expression[nullish], scope));
}

/**
 * Condition with two equal comparisons.
 * @param {ASTNode} expression Condition
 * @returns {boolean} True iff matches ? === ? || ? === ?
 */
function isDoubleComparison(expression) {
    return expression.type === "LogicalExpression" &&
           expression.operator === "||" &&
           expression.left.type === "BinaryExpression" &&
           expression.left.operator === "===" &&
           expression.right.type === "BinaryExpression" &&
           expression.right.operator === "===";
}

/**
 * Returns true iff the expression checks for undefined and null.
 * Example: value === null || value === undefined
 * @param {ASTNode} expression Test condition
 * @param {import('eslint-scope').Scope} scope Scope of the expression
 * @returns {boolean} True iff explicit nullish comparison
 */
function isExplicitNullishComparison(expression, scope) {
    if (!isDoubleComparison(expression)) {
        return false;
    }
    const leftReference = isReference(expression.left.left) ? "left" : "right";
    const leftNullish = leftReference === "left" ? "right" : "left";
    const rightReference = isReference(expression.right.left) ? "left" : "right";
    const rightNullish = rightReference === "left" ? "right" : "left";

return astUtils.isSameReference(expression.left[leftReference], expression.right[rightReference]) &&
           ((astUtils.isNullLiteral(expression.left[leftNullish]) && isUndefined(expression.right[rightNullish], scope)) ||
           (isUndefined(expression.left[leftNullish], scope) && astUtils.isNullLiteral(expression.right[rightNullish])));
}

/**
 * Returns true for Boolean(arg) calls
 * @param {ASTNode} expression Test condition
 * @param {import('eslint-scope').Scope} scope Scope of the expression
 * @returns {boolean} Whether the expression is a boolean cast
 */
function isBooleanCast(expression, scope) {
    return expression.type === "CallExpression" &&
           expression.callee.name === "Boolean" &&
           expression.arguments.length === 1 &&
           astUtils.isReferenceToGlobalVariable(scope, expression.callee);
}

/**
 * Returns true for:
 * truthiness checks:  value, Boolean(value), !!value
 * falsiness checks:   !value, !Boolean(value)
 * nullish checks:     value == null, value === undefined || value === null
 * @param {ASTNode} expression Test condition
 * @param {import('eslint-scope').Scope} scope Scope of the expression
 * @returns {?{ reference: ASTNode, operator: '??'|'||'|'&&'}} Null if not a known existence
 */
function getExistence(expression, scope) {
    const isNegated = expression.type === "UnaryExpression" && expression.operator === "!";
    const base = isNegated ? expression.argument : expression;

switch (true) {
        case isReference(base):
            return { reference: base, operator: isNegated ? "||" : "&&" };
        case base.type === "UnaryExpression" && base.operator === "!" && isReference(base.argument):
            return { reference: base.argument, operator: "&&" };
        case isBooleanCast(base, scope) && isReference(base.arguments[0]):
            return { reference: base.arguments[0], operator: isNegated ? "||" : "&&" };
        case isImplicitNullishComparison(expression, scope):
            return { reference: isReference(expression.left) ? expression.left : expression.right, operator: "??" };
        case isExplicitNullishComparison(expression, scope):
            return { reference: isReference(expression.left.left) ? expression.left.left : expression.left.right, operator: "??" };
        default: return null;
    }
}

/**
 * Returns true iff the node is inside a with block
 * @param {ASTNode} node Node to check
 * @returns {boolean} True iff passed node is inside a with block
 */
function isInsideWithBlock(node) {
    if (node.type === "Program") {
        return false;
    }

return node.parent.type === "WithStatement" && node.parent.body === node ? true : isInsideWithBlock(node.parent);
}

/**
 * Gets the leftmost operand of a consecutive logical expression.
 * @param {SourceCode} sourceCode The ESLint source code object
 * @param {LogicalExpression} node LogicalExpression
 * @returns {Expression} Leftmost operand
 */
function getLeftmostOperand(sourceCode, node) {
    let left = node.left;

while (left.type === "LogicalExpression" && left.operator === node.operator) {

if (astUtils.isParenthesised(sourceCode, left)) {

/*
             * It should have associativity,
             * but ignore it if use parentheses to make the evaluation order clear.
             */
            return left;
        }
        left = left.left;
    }
    return left;

}

//------------------------------------------------------------------------------
// Rule Definition
//------------------------------------------------------------------------------
/** @type {import('../shared/types').Rule} */
module.exports = {
    meta: {
        type: "suggestion",

docs: {
            description: "Require or disallow logical assignment operator shorthand",
            recommended: false,
            url: "https://eslint.org/docs/latest/rules/logical-assignment-operators"
        },

schema: {
            type: "array",
            oneOf: [{
                items: [
                    { const: "always" },
                    {
                        type: "object",
                        properties: {
                            enforceForIfStatements: {
                                type: "boolean"
                            }
                        },
                        additionalProperties: false
                    }
                ],
                minItems: 0, // 0 for allowing passing no options
                maxItems: 2
            }, {
                items: [{ const: "never" }],
                minItems: 1,
                maxItems: 1
            }]
        },
        fixable: "code",
        hasSuggestions: true,
        messages: {
            assignment: "Assignment (=) can be replaced with operator assignment ({{operator}}).",
            useLogicalOperator: "Convert this assignment to use the operator {{ operator }}.",
            logical: "Logical expression can be replaced with an assignment ({{ operator }}).",
            convertLogical: "Replace this logical expression with an assignment with the operator {{ operator }}.",
            if: "'if' statement can be replaced with a logical operator assignment with operator {{ operator }}.",
            convertIf: "Replace this 'if' statement with a logical assignment with operator {{ operator }}.",
            unexpected: "Unexpected logical operator assignment ({{operator}}) shorthand.",
            separate: "Separate the logical assignment into an assignment with a logical operator."
        }
    },

create(context) {
        const mode = context.options[0] === "never" ? "never" : "always";
        const checkIf = mode === "always" && context.options.length > 1 && context.options[1].enforceForIfStatements;
        const sourceCode = context.sourceCode;
        const isStrict = sourceCode.getScope(sourceCode.ast).isStrict;

/**
         * Returns false if the access could be a getter
         * @param {ASTNode} node Assignment expression
         * @returns {boolean} True iff the fix is safe
         */
        function cannotBeGetter(node) {
            return node.type === "Identifier" &&
                   (isStrict || !isInsideWithBlock(node));
        }

/**
         * Check whether only a single property is accessed
         * @param {ASTNode} node reference
         * @returns {boolean} True iff a single property is accessed
         */
        function accessesSingleProperty(node) {
            if (!isStrict && isInsideWithBlock(node)) {
                return node.type === "Identifier";
            }

return node.type === "MemberExpression" &&
                   baseTypes.has(node.object.type) &&
                   (!node.computed || (node.property.type !== "MemberExpression" && node.property.type !== "ChainExpression"));
        }

/**
         * Adds a fixer or suggestion whether on the fix is safe.
         * @param {{ messageId: string, node: ASTNode }} descriptor Report descriptor without fix or suggest
         * @param {{ messageId: string, fix: Function }} suggestion Adds the fix or the whole suggestion as only element in "suggest" to suggestion
         * @param {boolean} shouldBeFixed Fix iff the condition is true
         * @returns {Object} Descriptor with either an added fix or suggestion
         */
        function createConditionalFixer(descriptor, suggestion, shouldBeFixed) {
            if (shouldBeFixed) {
                return {
                    ...descriptor,
                    fix: suggestion.fix
                };
            }

return {
                ...descriptor,
                suggest: [suggestion]
            };
        }

/**
         * Returns the operator token for assignments and binary expressions
         * @param {ASTNode} node AssignmentExpression or BinaryExpression
         * @returns {import('eslint').AST.Token} Operator token between the left and right expression
         */
        function getOperatorToken(node) {
            return sourceCode.getFirstTokenBetween(node.left, node.right, token => token.value === node.operator);
        }

if (mode === "never") {
            return {

// foo ||= bar
                "AssignmentExpression"(assignment) {
                    if (!astUtils.isLogicalAssignmentOperator(assignment.operator)) {
                        return;
                    }

const descriptor = {
                        messageId: "unexpected",
                        node: assignment,
                        data: { operator: assignment.operator }
                    };
                    const suggestion = {
                        messageId: "separate",
                        *fix(ruleFixer) {
                            if (sourceCode.getCommentsInside(assignment).length > 0) {
                                return;
                            }

const operatorToken = getOperatorToken(assignment);

// -> foo = bar
                            yield ruleFixer.replaceText(operatorToken, "=");

const assignmentText = sourceCode.getText(assignment.left);
                            const operator = assignment.operator.slice(0, -1);

// -> foo = foo || bar
                            yield ruleFixer.insertTextAfter(operatorToken, ` ${assignmentText} ${operator}`);

const precedence = astUtils.getPrecedence(assignment.right) <= astUtils.getPrecedence({ type: "LogicalExpression", operator });

// ?? and || / && cannot be mixed but have same precedence
                            const mixed = assignment.operator === "??=" && astUtils.isLogicalExpression(assignment.right);

if (!astUtils.isParenthesised(sourceCode, assignment.right) && (precedence || mixed)) {

// -> foo = foo || (bar)
                                yield ruleFixer.insertTextBefore(assignment.right, "(");
                                yield ruleFixer.insertTextAfter(assignment.right, ")");
                            }
                        }
                    };

context.report(createConditionalFixer(descriptor, suggestion, cannotBeGetter(assignment.left)));
                }
            };
        }

return {

// foo = foo || bar
            "AssignmentExpression[operator='='][right.type='LogicalExpression']"(assignment) {
                const leftOperand = getLeftmostOperand(sourceCode, assignment.right);

if (!astUtils.isSameReference(assignment.left, leftOperand)
                ) {
                    return;
                }

const descriptor = {
                    messageId: "assignment",
                    node: assignment,
                    data: { operator: `${assignment.right.operator}=` }
                };
                const suggestion = {
                    messageId: "useLogicalOperator",
                    data: { operator: `${assignment.right.operator}=` },
                    *fix(ruleFixer) {
                        if (sourceCode.getCommentsInside(assignment).length > 0) {
                            return;
                        }

// No need for parenthesis around the assignment based on precedence as the precedence stays the same even with changed operator
                        const assignmentOperatorToken = getOperatorToken(assignment);

// -> foo ||= foo || bar
                        yield ruleFixer.insertTextBefore(assignmentOperatorToken, assignment.right.operator);

// -> foo ||= bar
                        const logicalOperatorToken = getOperatorToken(leftOperand.parent);
                        const firstRightOperandToken = sourceCode.getTokenAfter(logicalOperatorToken);

yield ruleFixer.removeRange([leftOperand.parent.range[0], firstRightOperandToken.range[0]]);
                    }
                };

context.report(createConditionalFixer(descriptor, suggestion, cannotBeGetter(assignment.left)));
            },

// foo || (foo = bar)
            'LogicalExpression[right.type="AssignmentExpression"][right.operator="="]'(logical) {

// Right side has to be parenthesized, otherwise would be parsed as (foo || foo) = bar which is illegal
                if (isReference(logical.left) && astUtils.isSameReference(logical.left, logical.right.left)) {
                    const descriptor = {
                        messageId: "logical",
                        node: logical,
                        data: { operator: `${logical.operator}=` }
                    };
                    const suggestion = {
                        messageId: "convertLogical",
                        data: { operator: `${logical.operator}=` },
                        *fix(ruleFixer) {
                            if (sourceCode.getCommentsInside(logical).length > 0) {
                                return;
                            }

const parentPrecedence = astUtils.getPrecedence(logical.parent);
                            const requiresOuterParenthesis = logical.parent.type !== "ExpressionStatement" && (
                                parentPrecedence === -1 ||
                                astUtils.getPrecedence({ type: "AssignmentExpression" }) < parentPrecedence
                            );

if (!astUtils.isParenthesised(sourceCode, logical) && requiresOuterParenthesis) {
                                yield ruleFixer.insertTextBefore(logical, "(");
                                yield ruleFixer.insertTextAfter(logical, ")");
                            }

// Also removes all opening parenthesis
                            yield ruleFixer.removeRange([logical.range[0], logical.right.range[0]]); // -> foo = bar)

// Also removes all ending parenthesis
                            yield ruleFixer.removeRange([logical.right.range[1], logical.range[1]]); // -> foo = bar

const operatorToken = getOperatorToken(logical.right);

yield ruleFixer.insertTextBefore(operatorToken, logical.operator); // -> foo ||= bar
                        }
                    };
                    const fix = cannotBeGetter(logical.left) || accessesSingleProperty(logical.left);

context.report(createConditionalFixer(descriptor, suggestion, fix));
                }
            },

// if (foo) foo = bar
            "IfStatement[alternate=null]"(ifNode) {
                if (!checkIf) {
                    return;
                }

const hasBody = ifNode.consequent.type === "BlockStatement";

if (hasBody && ifNode.consequent.body.length !== 1) {
                    return;
                }

const body = hasBody ? ifNode.consequent.body[0] : ifNode.consequent;
                const scope = sourceCode.getScope(ifNode);
                const existence = getExistence(ifNode.test, scope);

if (
                    body.type === "ExpressionStatement" &&
                    body.expression.type === "AssignmentExpression" &&
                    body.expression.operator === "=" &&
                    existence !== null &&
                    astUtils.isSameReference(existence.reference, body.expression.left)
                ) {
                    const descriptor = {
                        messageId: "if",
                        node: ifNode,
                        data: { operator: `${existence.operator}=` }
                    };
                    const suggestion = {
                        messageId: "convertIf",
                        data: { operator: `${existence.operator}=` },
                        *fix(ruleFixer) {
                            if (sourceCode.getCommentsInside(ifNode).length > 0) {
                                return;
                            }

const firstBodyToken = sourceCode.getFirstToken(body);
                            const prevToken = sourceCode.getTokenBefore(ifNode);

if (
                                prevToken !== null &&
                                prevToken.value !== ";" &&
                                prevToken.value !== "{" &&
                                firstBodyToken.type !== "Identifier" &&
                                firstBodyToken.type !== "Keyword"
                            ) {

// Do not fix if the fixed statement could be part of the previous statement (eg. fn() if (a == null) (a) = b --> fn()(a) ??= b)
                                return;
                            }

const operatorToken = getOperatorToken(body.expression);

yield ruleFixer.insertTextBefore(operatorToken, existence.operator); // -> if (foo) foo ||= bar

yield ruleFixer.removeRange([ifNode.range[0], body.range[0]]); // -> foo ||= bar

yield ruleFixer.removeRange([body.range[1], ifNode.range[1]]); // -> foo ||= bar, only present if "if" had a body

const nextToken = sourceCode.getTokenAfter(body.expression);

if (hasBody && (nextToken !== null && nextToken.value !== ";")) {
                                yield ruleFixer.insertTextAfter(ifNode, ";");
                            }
                        }
                    };
                    const shouldBeFixed = cannotBeGetter(existence.reference) ||
                                          (ifNode.test.type !== "LogicalExpression" && accessesSingleProperty(existence.reference));

context.report(createConditionalFixer(descriptor, suggestion, shouldBeFixed));
                }
            }
        };
    }
};

${this.title}

Code Editor : logical-assignment-operators.js