Linux ubuntu22 5.15.0-133-generic #144-Ubuntu SMP Fri Feb 7 20:47:38 UTC 2025 x86_64
nginx/1.18.0
: 128.199.27.159 | : 216.73.216.1
Cant Read [ /etc/named.conf ]
8.1.31
www-data
www.github.com/MadExploits
Terminal
AUTO ROOT
Adminer
Backdoor Destroyer
Linux Exploit
Lock Shell
Lock File
Create User
CREATE RDP
PHP Mailer
BACKCONNECT
UNLOCK SHELL
HASH IDENTIFIER
CPANEL RESET
CREATE WP USER
README
+ Create Folder
+ Create File
/
var /
www /
html /
quiz1 /
node_modules /
eslint /
lib /
rules /
[ HOME SHELL ]
Name
Size
Permission
Action
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-
Delete
Unzip
Zip
${this.title}
Close
Code Editor : no-else-return.js
/** * @fileoverview Rule to flag `else` after a `return` in `if` * @author Ian Christian Myers */ "use strict"; //------------------------------------------------------------------------------ // Requirements //------------------------------------------------------------------------------ const astUtils = require("./utils/ast-utils"); const FixTracker = require("./utils/fix-tracker"); //------------------------------------------------------------------------------ // Rule Definition //------------------------------------------------------------------------------ /** @type {import('../shared/types').Rule} */ module.exports = { meta: { type: "suggestion", docs: { description: "Disallow `else` blocks after `return` statements in `if` statements", recommended: false, url: "https://eslint.org/docs/latest/rules/no-else-return" }, schema: [{ type: "object", properties: { allowElseIf: { type: "boolean", default: true } }, additionalProperties: false }], fixable: "code", messages: { unexpected: "Unnecessary 'else' after 'return'." } }, create(context) { const sourceCode = context.sourceCode; //-------------------------------------------------------------------------- // Helpers //-------------------------------------------------------------------------- /** * Checks whether the given names can be safely used to declare block-scoped variables * in the given scope. Name collisions can produce redeclaration syntax errors, * or silently change references and modify behavior of the original code. * * This is not a generic function. In particular, it is assumed that the scope is a function scope or * a function's inner scope, and that the names can be valid identifiers in the given scope. * @param {string[]} names Array of variable names. * @param {eslint-scope.Scope} scope Function scope or a function's inner scope. * @returns {boolean} True if all names can be safely declared, false otherwise. */ function isSafeToDeclare(names, scope) { if (names.length === 0) { return true; } const functionScope = scope.variableScope; /* * If this is a function scope, scope.variables will contain parameters, implicit variables such as "arguments", * all function-scoped variables ('var'), and block-scoped variables defined in the scope. * If this is an inner scope, scope.variables will contain block-scoped variables defined in the scope. * * Redeclaring any of these would cause a syntax error, except for the implicit variables. */ const declaredVariables = scope.variables.filter(({ defs }) => defs.length > 0); if (declaredVariables.some(({ name }) => names.includes(name))) { return false; } // Redeclaring a catch variable would also cause a syntax error. if (scope !== functionScope && scope.upper.type === "catch") { if (scope.upper.variables.some(({ name }) => names.includes(name))) { return false; } } /* * Redeclaring an implicit variable, such as "arguments", would not cause a syntax error. * However, if the variable was used, declaring a new one with the same name would change references * and modify behavior. */ const usedImplicitVariables = scope.variables.filter(({ defs, references }) => defs.length === 0 && references.length > 0); if (usedImplicitVariables.some(({ name }) => names.includes(name))) { return false; } /* * Declaring a variable with a name that was already used to reference a variable from an upper scope * would change references and modify behavior. */ if (scope.through.some(t => names.includes(t.identifier.name))) { return false; } /* * If the scope is an inner scope (not the function scope), an uninitialized `var` variable declared inside * the scope node (directly or in one of its descendants) is neither declared nor 'through' in the scope. * * For example, this would be a syntax error "Identifier 'a' has already been declared": * function foo() { if (bar) { let a; if (baz) { var a; } } } */ if (scope !== functionScope) { const scopeNodeRange = scope.block.range; const variablesToCheck = functionScope.variables.filter(({ name }) => names.includes(name)); if (variablesToCheck.some(v => v.defs.some(({ node: { range } }) => scopeNodeRange[0] <= range[0] && range[1] <= scopeNodeRange[1]))) { return false; } } return true; } /** * Checks whether the removal of `else` and its braces is safe from variable name collisions. * @param {Node} node The 'else' node. * @param {eslint-scope.Scope} scope The scope in which the node and the whole 'if' statement is. * @returns {boolean} True if it is safe, false otherwise. */ function isSafeFromNameCollisions(node, scope) { if (node.type === "FunctionDeclaration") { // Conditional function declaration. Scope and hoisting are unpredictable, different engines work differently. return false; } if (node.type !== "BlockStatement") { return true; } const elseBlockScope = scope.childScopes.find(({ block }) => block === node); if (!elseBlockScope) { // ecmaVersion < 6, `else` block statement cannot have its own scope, no possible collisions. return true; } /* * elseBlockScope is supposed to merge into its upper scope. elseBlockScope.variables array contains * only block-scoped variables (such as let and const variables or class and function declarations) * defined directly in the elseBlockScope. These are exactly the only names that could cause collisions. */ const namesToCheck = elseBlockScope.variables.map(({ name }) => name); return isSafeToDeclare(namesToCheck, scope); } /** * Display the context report if rule is violated * @param {Node} elseNode The 'else' node * @returns {void} */ function displayReport(elseNode) { const currentScope = sourceCode.getScope(elseNode.parent); context.report({ node: elseNode, messageId: "unexpected", fix(fixer) { if (!isSafeFromNameCollisions(elseNode, currentScope)) { return null; } const startToken = sourceCode.getFirstToken(elseNode); const elseToken = sourceCode.getTokenBefore(startToken); const source = sourceCode.getText(elseNode); const lastIfToken = sourceCode.getTokenBefore(elseToken); let fixedSource, firstTokenOfElseBlock; if (startToken.type === "Punctuator" && startToken.value === "{") { firstTokenOfElseBlock = sourceCode.getTokenAfter(startToken); } else { firstTokenOfElseBlock = startToken; } /* * If the if block does not have curly braces and does not end in a semicolon * and the else block starts with (, [, /, +, ` or -, then it is not * safe to remove the else keyword, because ASI will not add a semicolon * after the if block */ const ifBlockMaybeUnsafe = elseNode.parent.consequent.type !== "BlockStatement" && lastIfToken.value !== ";"; const elseBlockUnsafe = /^[([/+`-]/u.test(firstTokenOfElseBlock.value); if (ifBlockMaybeUnsafe && elseBlockUnsafe) { return null; } const endToken = sourceCode.getLastToken(elseNode); const lastTokenOfElseBlock = sourceCode.getTokenBefore(endToken); if (lastTokenOfElseBlock.value !== ";") { const nextToken = sourceCode.getTokenAfter(endToken); const nextTokenUnsafe = nextToken && /^[([/+`-]/u.test(nextToken.value); const nextTokenOnSameLine = nextToken && nextToken.loc.start.line === lastTokenOfElseBlock.loc.start.line; /* * If the else block contents does not end in a semicolon, * and the else block starts with (, [, /, +, ` or -, then it is not * safe to remove the else block, because ASI will not add a semicolon * after the remaining else block contents */ if (nextTokenUnsafe || (nextTokenOnSameLine && nextToken.value !== "}")) { return null; } } if (startToken.type === "Punctuator" && startToken.value === "{") { fixedSource = source.slice(1, -1); } else { fixedSource = source; } /* * Extend the replacement range to include the entire * function to avoid conflicting with no-useless-return. * https://github.com/eslint/eslint/issues/8026 * * Also, to avoid name collisions between two else blocks. */ return new FixTracker(fixer, sourceCode) .retainEnclosingFunction(elseNode) .replaceTextRange([elseToken.range[0], elseNode.range[1]], fixedSource); } }); } /** * Check to see if the node is a ReturnStatement * @param {Node} node The node being evaluated * @returns {boolean} True if node is a return */ function checkForReturn(node) { return node.type === "ReturnStatement"; } /** * Naive return checking, does not iterate through the whole * BlockStatement because we make the assumption that the ReturnStatement * will be the last node in the body of the BlockStatement. * @param {Node} node The consequent/alternate node * @returns {boolean} True if it has a return */ function naiveHasReturn(node) { if (node.type === "BlockStatement") { const body = node.body, lastChildNode = body[body.length - 1]; return lastChildNode && checkForReturn(lastChildNode); } return checkForReturn(node); } /** * Check to see if the node is valid for evaluation, * meaning it has an else. * @param {Node} node The node being evaluated * @returns {boolean} True if the node is valid */ function hasElse(node) { return node.alternate && node.consequent; } /** * If the consequent is an IfStatement, check to see if it has an else * and both its consequent and alternate path return, meaning this is * a nested case of rule violation. If-Else not considered currently. * @param {Node} node The consequent node * @returns {boolean} True if this is a nested rule violation */ function checkForIf(node) { return node.type === "IfStatement" && hasElse(node) && naiveHasReturn(node.alternate) && naiveHasReturn(node.consequent); } /** * Check the consequent/body node to make sure it is not * a ReturnStatement or an IfStatement that returns on both * code paths. * @param {Node} node The consequent or body node * @returns {boolean} `true` if it is a Return/If node that always returns. */ function checkForReturnOrIf(node) { return checkForReturn(node) || checkForIf(node); } /** * Check whether a node returns in every codepath. * @param {Node} node The node to be checked * @returns {boolean} `true` if it returns on every codepath. */ function alwaysReturns(node) { if (node.type === "BlockStatement") { // If we have a BlockStatement, check each consequent body node. return node.body.some(checkForReturnOrIf); } /* * If not a block statement, make sure the consequent isn't a * ReturnStatement or an IfStatement with returns on both paths. */ return checkForReturnOrIf(node); } /** * Check the if statement, but don't catch else-if blocks. * @returns {void} * @param {Node} node The node for the if statement to check * @private */ function checkIfWithoutElse(node) { const parent = node.parent; /* * Fixing this would require splitting one statement into two, so no error should * be reported if this node is in a position where only one statement is allowed. */ if (!astUtils.STATEMENT_LIST_PARENTS.has(parent.type)) { return; } const consequents = []; let alternate; for (let currentNode = node; currentNode.type === "IfStatement"; currentNode = currentNode.alternate) { if (!currentNode.alternate) { return; } consequents.push(currentNode.consequent); alternate = currentNode.alternate; } if (consequents.every(alwaysReturns)) { displayReport(alternate); } } /** * Check the if statement * @returns {void} * @param {Node} node The node for the if statement to check * @private */ function checkIfWithElse(node) { const parent = node.parent; /* * Fixing this would require splitting one statement into two, so no error should * be reported if this node is in a position where only one statement is allowed. */ if (!astUtils.STATEMENT_LIST_PARENTS.has(parent.type)) { return; } const alternate = node.alternate; if (alternate && alwaysReturns(node.consequent)) { displayReport(alternate); } } const allowElseIf = !(context.options[0] && context.options[0].allowElseIf === false); //-------------------------------------------------------------------------- // Public API //-------------------------------------------------------------------------- return { "IfStatement:exit": allowElseIf ? checkIfWithoutElse : checkIfWithElse }; } };
Close
