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Date
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utils
[ DIR ]
drwxr-xr-x
2024-07-10 10:55
accessor-pairs.js
12.41
KB
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2019-09-14 01:35
array-bracket-newline.js
9.43
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2019-09-14 01:35
array-bracket-spacing.js
8.85
KB
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2019-09-14 01:35
array-callback-return.js
7.98
KB
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2019-09-14 01:35
array-element-newline.js
9.22
KB
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2023-12-15 20:21
arrow-body-style.js
10.27
KB
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2019-09-14 01:35
arrow-parens.js
6.38
KB
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2019-09-14 01:35
arrow-spacing.js
5.08
KB
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2019-09-14 01:35
block-scoped-var.js
3.58
KB
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2019-09-14 01:35
block-spacing.js
4.99
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2019-09-14 01:35
brace-style.js
7.71
KB
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2019-09-14 01:35
callback-return.js
6.33
KB
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2019-09-14 01:35
camelcase.js
8.29
KB
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2019-09-14 01:35
capitalized-comments.js
10.68
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2023-12-15 20:21
class-methods-use-this.js
3.81
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2019-09-14 01:35
comma-dangle.js
11.75
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2019-09-14 01:35
comma-spacing.js
6.53
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2019-09-14 01:35
comma-style.js
11.78
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2019-09-14 01:35
complexity.js
4.94
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2019-09-14 01:35
computed-property-spacing.js
7.17
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2019-09-14 01:35
consistent-return.js
6.59
KB
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2019-09-14 01:35
consistent-this.js
4.86
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2019-09-14 01:35
constructor-super.js
13.49
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2019-09-14 01:35
curly.js
16.24
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2019-09-14 01:35
default-case.js
2.76
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2019-09-14 01:35
default-param-last.js
1.5
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2019-09-14 01:35
dot-location.js
3.34
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2019-09-14 01:35
dot-notation.js
6.47
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2019-09-14 01:35
eol-last.js
3.79
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2019-09-14 01:35
eqeqeq.js
5.55
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2023-12-15 20:21
for-direction.js
4.27
KB
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2019-09-14 01:35
func-call-spacing.js
7.29
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2019-09-14 01:35
func-name-matching.js
9.84
KB
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2023-12-15 20:21
func-names.js
6.09
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2023-12-15 20:21
func-style.js
2.84
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2019-09-14 01:35
function-call-argument-newline.js
4.13
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2019-09-14 01:35
function-paren-newline.js
11.15
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2019-09-14 01:35
generator-star-spacing.js
6.98
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2019-09-14 01:35
getter-return.js
6.02
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2019-09-14 01:35
global-require.js
2.3
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2019-09-14 01:35
guard-for-in.js
2.3
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2019-09-14 01:35
handle-callback-err.js
2.92
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2019-09-14 01:35
id-blacklist.js
4.05
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2019-09-14 01:35
id-length.js
4.12
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2019-09-14 01:35
id-match.js
8.14
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2019-09-14 01:35
implicit-arrow-linebreak.js
2.79
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2019-09-14 01:35
indent-legacy.js
44.45
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2019-09-14 01:35
indent.js
68.68
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2019-09-14 01:35
index.js
16.34
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2019-09-14 01:35
init-declarations.js
4.37
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2019-09-14 01:35
jsx-quotes.js
2.89
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2019-09-14 01:35
key-spacing.js
24.82
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2019-09-14 01:35
keyword-spacing.js
21.2
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2019-09-14 01:35
line-comment-position.js
4.08
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2019-09-14 01:35
linebreak-style.js
3.17
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2019-09-14 01:35
lines-around-comment.js
15.54
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2019-09-14 01:35
lines-around-directive.js
7.58
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2019-09-14 01:35
lines-between-class-members.js
5.05
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2019-09-14 01:35
max-classes-per-file.js
1.73
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2019-09-14 01:35
max-depth.js
4.59
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2019-09-14 01:35
max-len.js
13.8
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2019-09-14 01:35
max-lines-per-function.js
6.89
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2019-09-14 01:35
max-lines.js
4.59
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2019-09-14 01:35
max-nested-callbacks.js
3.47
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2019-09-14 01:35
max-params.js
3.07
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2019-09-14 01:35
max-statements-per-line.js
7.31
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2019-09-14 01:35
max-statements.js
5.4
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2019-09-14 01:35
multiline-comment-style.js
14.42
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2019-09-14 01:35
multiline-ternary.js
3.42
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2019-09-14 01:35
new-cap.js
9.44
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2019-09-14 01:35
new-parens.js
3.14
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2019-09-14 01:35
newline-after-var.js
9.6
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2019-09-14 01:35
newline-before-return.js
7.89
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2019-09-14 01:35
newline-per-chained-call.js
3.56
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2019-09-14 01:35
no-alert.js
3.96
KB
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2019-09-14 01:35
no-array-constructor.js
1.36
KB
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2019-09-14 01:35
no-async-promise-executor.js
1.1
KB
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2019-09-14 01:35
no-await-in-loop.js
2.72
KB
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2019-09-14 01:35
no-bitwise.js
3.51
KB
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2019-09-14 01:35
no-buffer-constructor.js
1.31
KB
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2019-09-14 01:35
no-caller.js
1.17
KB
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2019-09-14 01:35
no-case-declarations.js
1.82
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2019-09-14 01:35
no-catch-shadow.js
2.44
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2019-09-14 01:35
no-class-assign.js
1.67
KB
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2019-09-14 01:35
no-compare-neg-zero.js
1.9
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2019-09-14 01:35
no-cond-assign.js
5.04
KB
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2019-09-14 01:35
no-confusing-arrow.js
2.55
KB
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2019-09-14 01:35
no-console.js
4.21
KB
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2019-09-14 01:35
no-const-assign.js
1.46
KB
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2019-09-14 01:35
no-constant-condition.js
8.48
KB
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2019-09-14 01:35
no-continue.js
875
B
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2019-09-14 01:35
no-control-regex.js
3.14
KB
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2019-09-14 01:35
no-debugger.js
947
B
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2019-09-14 01:35
no-delete-var.js
965
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2019-09-14 01:35
no-div-regex.js
1.42
KB
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2019-09-14 01:35
no-dupe-args.js
2.3
KB
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2019-09-14 01:35
no-dupe-class-members.js
3.58
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2019-09-14 01:35
no-dupe-keys.js
3.87
KB
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2019-09-14 01:35
no-duplicate-case.js
1.36
KB
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2019-09-14 01:35
no-duplicate-imports.js
4.43
KB
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2019-09-14 01:35
no-else-return.js
15.74
KB
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2019-09-14 01:35
no-empty-character-class.js
1.91
KB
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2019-09-14 01:35
no-empty-function.js
4.61
KB
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2019-09-14 01:35
no-empty-pattern.js
1.15
KB
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2019-09-14 01:35
no-empty.js
2.44
KB
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2019-09-14 01:35
no-eq-null.js
1.21
KB
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2019-09-14 01:35
no-eval.js
9.31
KB
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2019-09-14 01:35
no-ex-assign.js
1.37
KB
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2019-09-14 01:35
no-extend-native.js
6.95
KB
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2019-09-14 01:35
no-extra-bind.js
5.71
KB
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2019-09-14 01:35
no-extra-boolean-cast.js
6.52
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2019-09-14 01:35
no-extra-label.js
4.76
KB
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2019-09-14 01:35
no-extra-parens.js
39.11
KB
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2019-09-14 01:35
no-extra-semi.js
4.11
KB
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2019-09-14 01:35
no-fallthrough.js
4.78
KB
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2019-09-14 01:35
no-floating-decimal.js
2.33
KB
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2019-09-14 01:35
no-func-assign.js
1.96
KB
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2019-09-14 01:35
no-global-assign.js
2.76
KB
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2019-09-14 01:35
no-implicit-coercion.js
10.06
KB
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2019-09-14 01:35
no-implicit-globals.js
1.78
KB
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2019-09-14 01:35
no-implied-eval.js
5.99
KB
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2019-09-14 01:35
no-import-assign.js
6.92
KB
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2019-09-14 01:35
no-inline-comments.js
2.19
KB
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2019-09-14 01:35
no-inner-declarations.js
2.59
KB
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2019-09-14 01:35
no-invalid-regexp.js
4.01
KB
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2019-09-14 01:35
no-invalid-this.js
3.74
KB
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2019-09-14 01:35
no-irregular-whitespace.js
8.72
KB
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2019-09-14 01:35
no-iterator.js
1.08
KB
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2019-09-14 01:35
no-label-var.js
2.13
KB
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2019-09-14 01:35
no-labels.js
4.22
KB
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2019-09-14 01:35
no-lone-blocks.js
3.68
KB
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2019-09-14 01:35
no-lonely-if.js
3.62
KB
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2019-09-14 01:35
no-loop-func.js
6.16
KB
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2019-09-14 01:35
no-magic-numbers.js
5.8
KB
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2019-09-14 01:35
no-misleading-character-class.js
6.05
KB
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2019-09-14 01:35
no-mixed-operators.js
8.21
KB
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2019-09-14 01:35
no-mixed-requires.js
6.91
KB
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2019-09-14 01:35
no-mixed-spaces-and-tabs.js
4.54
KB
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2019-09-14 01:35
no-multi-assign.js
1.18
KB
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2019-09-14 01:35
no-multi-spaces.js
4.85
KB
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2019-09-14 01:35
no-multi-str.js
1.64
KB
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2019-09-14 01:35
no-multiple-empty-lines.js
5.75
KB
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2019-09-14 01:35
no-native-reassign.js
2.86
KB
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2019-09-14 01:35
no-negated-condition.js
2.68
KB
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2019-09-14 01:35
no-negated-in-lhs.js
1.08
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2019-09-14 01:35
no-nested-ternary.js
986
B
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2019-09-14 01:35
no-new-func.js
1.24
KB
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2019-09-14 01:35
no-new-object.js
923
B
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2019-09-14 01:35
no-new-require.js
960
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2019-09-14 01:35
no-new-symbol.js
1.27
KB
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2019-09-14 01:35
no-new-wrappers.js
1.05
KB
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2019-09-14 01:35
no-new.js
913
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2019-09-14 01:35
no-obj-calls.js
1.84
KB
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2019-09-14 01:35
no-octal-escape.js
1.42
KB
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2019-09-14 01:35
no-octal.js
886
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2019-09-14 01:35
no-param-reassign.js
6.8
KB
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2019-09-14 01:35
no-path-concat.js
1.44
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2019-09-14 01:35
no-plusplus.js
1.66
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2019-09-14 01:35
no-process-env.js
1.01
KB
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2019-09-14 01:35
no-process-exit.js
1.08
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2019-09-14 01:35
no-proto.js
1.07
KB
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2019-09-14 01:35
no-prototype-builtins.js
1.63
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2019-09-14 01:35
no-redeclare.js
5.6
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2019-09-14 01:35
no-regex-spaces.js
3.73
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2019-09-14 01:35
no-restricted-globals.js
3.76
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2019-09-14 01:35
no-restricted-imports.js
11.43
KB
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2023-12-15 20:21
no-restricted-modules.js
5.9
KB
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2023-12-15 20:21
no-restricted-properties.js
6.46
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2019-09-14 01:35
no-restricted-syntax.js
1.97
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2019-09-14 01:35
no-return-assign.js
2.49
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2019-09-14 01:35
no-return-await.js
3.73
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2019-09-14 01:35
no-script-url.js
1.05
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2019-09-14 01:35
no-self-assign.js
6.79
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2019-09-14 01:35
no-self-compare.js
1.72
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2019-09-14 01:35
no-sequences.js
3.94
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2019-09-14 01:35
no-shadow-restricted-names.js
2
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2019-09-14 01:35
no-shadow.js
6.81
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2019-09-14 01:35
no-spaced-func.js
2.34
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2019-09-14 01:35
no-sparse-arrays.js
1.07
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2019-09-14 01:35
no-sync.js
1.52
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2019-09-14 01:35
no-tabs.js
2.01
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2019-09-14 01:35
no-template-curly-in-string.js
1.04
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2019-09-14 01:35
no-ternary.js
793
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2019-09-14 01:35
no-this-before-super.js
9.95
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2019-09-14 01:35
no-throw-literal.js
1.26
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2019-09-14 01:35
no-trailing-spaces.js
6.13
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2019-09-14 01:35
no-undef-init.js
2.01
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2019-09-14 01:35
no-undef.js
2.24
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2019-09-14 01:35
no-undefined.js
2.07
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2019-09-14 01:35
no-underscore-dangle.js
7.44
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2019-09-14 01:35
no-unexpected-multiline.js
3.59
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2019-09-14 01:35
no-unmodified-loop-condition.js
11.65
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2019-09-14 01:35
no-unneeded-ternary.js
6.58
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2019-09-14 01:35
no-unreachable.js
6.29
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2019-09-14 01:35
no-unsafe-finally.js
3.87
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2019-09-14 01:35
no-unsafe-negation.js
2.36
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2019-09-14 01:35
no-unused-expressions.js
4.7
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2019-09-14 01:35
no-unused-labels.js
3.22
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2019-09-14 01:35
no-unused-vars.js
23.08
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2019-09-14 01:35
no-use-before-define.js
7.45
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2019-09-14 01:35
no-useless-call.js
2.78
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2019-09-14 01:35
no-useless-catch.js
1.55
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2019-09-14 01:35
no-useless-computed-key.js
3.19
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2019-09-14 01:35
no-useless-concat.js
3.16
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2019-09-14 01:35
no-useless-constructor.js
5.46
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2019-09-14 01:35
no-useless-escape.js
8.98
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2019-09-14 01:35
no-useless-rename.js
5.08
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2019-09-14 01:35
no-useless-return.js
11.77
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2019-09-14 01:35
no-var.js
12.13
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2019-09-14 01:35
no-void.js
1.03
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2019-09-14 01:35
no-warning-comments.js
5.4
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2019-09-14 01:35
no-whitespace-before-property.js
3.33
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2019-09-14 01:35
no-with.js
784
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2019-09-14 01:35
nonblock-statement-body-position.js
4.41
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2023-12-15 20:21
object-curly-newline.js
10.69
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2019-09-14 01:35
object-curly-spacing.js
11.27
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2019-09-14 01:35
object-property-newline.js
3.59
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2019-09-14 01:35
object-shorthand.js
20.66
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2019-09-14 01:35
one-var-declaration-per-line.js
2.74
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2019-09-14 01:35
one-var.js
21
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2019-09-14 01:35
operator-assignment.js
7.73
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Save
Rename
/** * @fileoverview Rule to flag statements without curly braces * @author Nicholas C. Zakas */ "use strict"; //------------------------------------------------------------------------------ // Requirements //------------------------------------------------------------------------------ const astUtils = require("./utils/ast-utils"); //------------------------------------------------------------------------------ // Rule Definition //------------------------------------------------------------------------------ module.exports = { meta: { type: "suggestion", docs: { description: "enforce consistent brace style for all control statements", category: "Best Practices", recommended: false, url: "https://eslint.org/docs/rules/curly" }, schema: { anyOf: [ { type: "array", items: [ { enum: ["all"] } ], minItems: 0, maxItems: 1 }, { type: "array", items: [ { enum: ["multi", "multi-line", "multi-or-nest"] }, { enum: ["consistent"] } ], minItems: 0, maxItems: 2 } ] }, fixable: "code", messages: { missingCurlyAfter: "Expected { after '{{name}}'.", missingCurlyAfterCondition: "Expected { after '{{name}}' condition.", unexpectedCurlyAfter: "Unnecessary { after '{{name}}'.", unexpectedCurlyAfterCondition: "Unnecessary { after '{{name}}' condition." } }, create(context) { const multiOnly = (context.options[0] === "multi"); const multiLine = (context.options[0] === "multi-line"); const multiOrNest = (context.options[0] === "multi-or-nest"); const consistent = (context.options[1] === "consistent"); const sourceCode = context.getSourceCode(); //-------------------------------------------------------------------------- // Helpers //-------------------------------------------------------------------------- /** * Determines if a given node is a one-liner that's on the same line as it's preceding code. * @param {ASTNode} node The node to check. * @returns {boolean} True if the node is a one-liner that's on the same line as it's preceding code. * @private */ function isCollapsedOneLiner(node) { const before = sourceCode.getTokenBefore(node); const last = sourceCode.getLastToken(node); const lastExcludingSemicolon = astUtils.isSemicolonToken(last) ? sourceCode.getTokenBefore(last) : last; return before.loc.start.line === lastExcludingSemicolon.loc.end.line; } /** * Determines if a given node is a one-liner. * @param {ASTNode} node The node to check. * @returns {boolean} True if the node is a one-liner. * @private */ function isOneLiner(node) { const first = sourceCode.getFirstToken(node), last = sourceCode.getLastToken(node); return first.loc.start.line === last.loc.end.line; } /** * Determines if the given node is a lexical declaration (let, const, function, or class) * @param {ASTNode} node The node to check * @returns {boolean} True if the node is a lexical declaration * @private */ function isLexicalDeclaration(node) { if (node.type === "VariableDeclaration") { return node.kind === "const" || node.kind === "let"; } return node.type === "FunctionDeclaration" || node.type === "ClassDeclaration"; } /** * Checks if the given token is an `else` token or not. * * @param {Token} token - The token to check. * @returns {boolean} `true` if the token is an `else` token. */ function isElseKeywordToken(token) { return token.value === "else" && token.type === "Keyword"; } /** * Gets the `else` keyword token of a given `IfStatement` node. * @param {ASTNode} node - A `IfStatement` node to get. * @returns {Token} The `else` keyword token. */ function getElseKeyword(node) { return node.alternate && sourceCode.getFirstTokenBetween(node.consequent, node.alternate, isElseKeywordToken); } /** * Checks a given IfStatement node requires braces of the consequent chunk. * This returns `true` when below: * * 1. The given node has the `alternate` node. * 2. There is a `IfStatement` which doesn't have `alternate` node in the * trailing statement chain of the `consequent` node. * * @param {ASTNode} node - A IfStatement node to check. * @returns {boolean} `true` if the node requires braces of the consequent chunk. */ function requiresBraceOfConsequent(node) { if (node.alternate && node.consequent.type === "BlockStatement") { if (node.consequent.body.length >= 2) { return true; } for ( let currentNode = node.consequent.body[0]; currentNode; currentNode = astUtils.getTrailingStatement(currentNode) ) { if (currentNode.type === "IfStatement" && !currentNode.alternate) { return true; } } } return false; } /** * Determines if a semicolon needs to be inserted after removing a set of curly brackets, in order to avoid a SyntaxError. * @param {Token} closingBracket The } token * @returns {boolean} `true` if a semicolon needs to be inserted after the last statement in the block. */ function needsSemicolon(closingBracket) { const tokenBefore = sourceCode.getTokenBefore(closingBracket); const tokenAfter = sourceCode.getTokenAfter(closingBracket); const lastBlockNode = sourceCode.getNodeByRangeIndex(tokenBefore.range[0]); if (astUtils.isSemicolonToken(tokenBefore)) { // If the last statement already has a semicolon, don't add another one. return false; } if (!tokenAfter) { // If there are no statements after this block, there is no need to add a semicolon. return false; } if (lastBlockNode.type === "BlockStatement" && lastBlockNode.parent.type !== "FunctionExpression" && lastBlockNode.parent.type !== "ArrowFunctionExpression") { /* * If the last node surrounded by curly brackets is a BlockStatement (other than a FunctionExpression or an ArrowFunctionExpression), * don't insert a semicolon. Otherwise, the semicolon would be parsed as a separate statement, which would cause * a SyntaxError if it was followed by `else`. */ return false; } if (tokenBefore.loc.end.line === tokenAfter.loc.start.line) { // If the next token is on the same line, insert a semicolon. return true; } if (/^[([/`+-]/u.test(tokenAfter.value)) { // If the next token starts with a character that would disrupt ASI, insert a semicolon. return true; } if (tokenBefore.type === "Punctuator" && (tokenBefore.value === "++" || tokenBefore.value === "--")) { // If the last token is ++ or --, insert a semicolon to avoid disrupting ASI. return true; } // Otherwise, do not insert a semicolon. return false; } /** * Prepares to check the body of a node to see if it's a block statement. * @param {ASTNode} node The node to report if there's a problem. * @param {ASTNode} body The body node to check for blocks. * @param {string} name The name to report if there's a problem. * @param {{ condition: boolean }} opts Options to pass to the report functions * @returns {Object} a prepared check object, with "actual", "expected", "check" properties. * "actual" will be `true` or `false` whether the body is already a block statement. * "expected" will be `true` or `false` if the body should be a block statement or not, or * `null` if it doesn't matter, depending on the rule options. It can be modified to change * the final behavior of "check". * "check" will be a function reporting appropriate problems depending on the other * properties. */ function prepareCheck(node, body, name, opts) { const hasBlock = (body.type === "BlockStatement"); let expected = null; if (node.type === "IfStatement" && node.consequent === body && requiresBraceOfConsequent(node)) { expected = true; } else if (multiOnly) { if (hasBlock && body.body.length === 1) { expected = false; } } else if (multiLine) { if (!isCollapsedOneLiner(body)) { expected = true; } } else if (multiOrNest) { if (hasBlock && body.body.length === 1 && isOneLiner(body.body[0])) { const leadingComments = sourceCode.getCommentsBefore(body.body[0]); const isLexDef = isLexicalDeclaration(body.body[0]); if (isLexDef) { expected = true; } else { expected = leadingComments.length > 0; } } else if (!isOneLiner(body)) { expected = true; } } else { expected = true; } return { actual: hasBlock, expected, check() { if (this.expected !== null && this.expected !== this.actual) { if (this.expected) { context.report({ node, loc: (name !== "else" ? node : getElseKeyword(node)).loc.start, messageId: opts && opts.condition ? "missingCurlyAfterCondition" : "missingCurlyAfter", data: { name }, fix: fixer => fixer.replaceText(body, `{${sourceCode.getText(body)}}`) }); } else { context.report({ node, loc: (name !== "else" ? node : getElseKeyword(node)).loc.start, messageId: opts && opts.condition ? "unexpectedCurlyAfterCondition" : "unexpectedCurlyAfter", data: { name }, fix(fixer) { /* * `do while` expressions sometimes need a space to be inserted after `do`. * e.g. `do{foo()} while (bar)` should be corrected to `do foo() while (bar)` */ const needsPrecedingSpace = node.type === "DoWhileStatement" && sourceCode.getTokenBefore(body).range[1] === body.range[0] && !astUtils.canTokensBeAdjacent("do", sourceCode.getFirstToken(body, { skip: 1 })); const openingBracket = sourceCode.getFirstToken(body); const closingBracket = sourceCode.getLastToken(body); const lastTokenInBlock = sourceCode.getTokenBefore(closingBracket); if (needsSemicolon(closingBracket)) { /* * If removing braces would cause a SyntaxError due to multiple statements on the same line (or * change the semantics of the code due to ASI), don't perform a fix. */ return null; } const resultingBodyText = sourceCode.getText().slice(openingBracket.range[1], lastTokenInBlock.range[0]) + sourceCode.getText(lastTokenInBlock) + sourceCode.getText().slice(lastTokenInBlock.range[1], closingBracket.range[0]); return fixer.replaceText(body, (needsPrecedingSpace ? " " : "") + resultingBodyText); } }); } } } }; } /** * Prepares to check the bodies of a "if", "else if" and "else" chain. * @param {ASTNode} node The first IfStatement node of the chain. * @returns {Object[]} prepared checks for each body of the chain. See `prepareCheck` for more * information. */ function prepareIfChecks(node) { const preparedChecks = []; for (let currentNode = node; currentNode; currentNode = currentNode.alternate) { preparedChecks.push(prepareCheck(currentNode, currentNode.consequent, "if", { condition: true })); if (currentNode.alternate && currentNode.alternate.type !== "IfStatement") { preparedChecks.push(prepareCheck(currentNode, currentNode.alternate, "else")); break; } } if (consistent) { /* * If any node should have or already have braces, make sure they * all have braces. * If all nodes shouldn't have braces, make sure they don't. */ const expected = preparedChecks.some(preparedCheck => { if (preparedCheck.expected !== null) { return preparedCheck.expected; } return preparedCheck.actual; }); preparedChecks.forEach(preparedCheck => { preparedCheck.expected = expected; }); } return preparedChecks; } //-------------------------------------------------------------------------- // Public //-------------------------------------------------------------------------- return { IfStatement(node) { if (node.parent.type !== "IfStatement") { prepareIfChecks(node).forEach(preparedCheck => { preparedCheck.check(); }); } }, WhileStatement(node) { prepareCheck(node, node.body, "while", { condition: true }).check(); }, DoWhileStatement(node) { prepareCheck(node, node.body, "do").check(); }, ForStatement(node) { prepareCheck(node, node.body, "for", { condition: true }).check(); }, ForInStatement(node) { prepareCheck(node, node.body, "for-in").check(); }, ForOfStatement(node) { prepareCheck(node, node.body, "for-of").check(); } }; } };