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accessor-pairs.js
11.71
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array-bracket-newline.js
9.45
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array-bracket-spacing.js
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array-callback-return.js
15.5
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array-element-newline.js
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arrow-body-style.js
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arrow-parens.js
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arrow-spacing.js
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block-scoped-var.js
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block-spacing.js
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brace-style.js
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callback-return.js
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camelcase.js
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capitalized-comments.js
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class-methods-use-this.js
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comma-dangle.js
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comma-spacing.js
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comma-style.js
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complexity.js
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computed-property-spacing.js
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consistent-return.js
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consistent-this.js
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curly.js
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default-case-last.js
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default-case.js
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default-param-last.js
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dot-location.js
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dot-notation.js
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eol-last.js
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eqeqeq.js
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for-direction.js
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func-call-spacing.js
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func-name-matching.js
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func-names.js
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func-style.js
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function-paren-newline.js
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generator-star-spacing.js
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getter-return.js
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global-require.js
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grouped-accessor-pairs.js
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guard-for-in.js
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handle-callback-err.js
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id-blacklist.js
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id-denylist.js
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id-length.js
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id-match.js
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implicit-arrow-linebreak.js
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indent-legacy.js
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indent.js
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index.js
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init-declarations.js
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jsx-quotes.js
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key-spacing.js
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keyword-spacing.js
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line-comment-position.js
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linebreak-style.js
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lines-around-comment.js
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lines-around-directive.js
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lines-between-class-members.js
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logical-assignment-operators.j...
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max-classes-per-file.js
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max-depth.js
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max-len.js
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max-lines-per-function.js
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max-lines.js
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max-nested-callbacks.js
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max-params.js
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max-statements-per-line.js
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max-statements.js
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multiline-comment-style.js
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multiline-ternary.js
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new-cap.js
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new-parens.js
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newline-after-var.js
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newline-before-return.js
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newline-per-chained-call.js
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no-alert.js
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no-array-constructor.js
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no-async-promise-executor.js
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no-await-in-loop.js
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no-bitwise.js
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no-case-declarations.js
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no-catch-shadow.js
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no-class-assign.js
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no-compare-neg-zero.js
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no-cond-assign.js
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no-confusing-arrow.js
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no-console.js
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no-const-assign.js
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no-constant-condition.js
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no-continue.js
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no-control-regex.js
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no-debugger.js
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no-delete-var.js
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no-div-regex.js
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no-dupe-args.js
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no-dupe-class-members.js
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no-dupe-else-if.js
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no-dupe-keys.js
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no-duplicate-case.js
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no-duplicate-imports.js
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no-else-return.js
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no-empty-character-class.js
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no-empty-function.js
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no-empty-pattern.js
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no-empty-static-block.js
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no-empty.js
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no-eq-null.js
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no-eval.js
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no-ex-assign.js
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no-extend-native.js
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no-extra-bind.js
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no-extra-boolean-cast.js
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no-extra-label.js
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no-extra-parens.js
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no-extra-semi.js
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no-fallthrough.js
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no-floating-decimal.js
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no-func-assign.js
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no-global-assign.js
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no-implicit-coercion.js
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no-implicit-globals.js
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no-implied-eval.js
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no-import-assign.js
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no-inline-comments.js
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no-inner-declarations.js
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no-invalid-regexp.js
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no-invalid-this.js
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no-irregular-whitespace.js
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no-iterator.js
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no-label-var.js
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no-labels.js
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no-lone-blocks.js
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no-lonely-if.js
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no-loop-func.js
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no-loss-of-precision.js
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no-magic-numbers.js
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no-mixed-operators.js
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no-mixed-requires.js
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no-mixed-spaces-and-tabs.js
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no-multi-assign.js
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no-multi-spaces.js
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no-multi-str.js
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no-multiple-empty-lines.js
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no-native-reassign.js
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no-negated-condition.js
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no-negated-in-lhs.js
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no-nested-ternary.js
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no-new-func.js
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no-new-object.js
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no-new-require.js
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no-new-symbol.js
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no-new-wrappers.js
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no-new.js
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no-nonoctal-decimal-escape.js
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no-obj-calls.js
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no-object-constructor.js
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no-octal-escape.js
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no-octal.js
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no-param-reassign.js
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no-path-concat.js
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no-plusplus.js
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no-process-env.js
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no-promise-executor-return.js
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no-proto.js
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no-redeclare.js
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no-regex-spaces.js
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no-restricted-exports.js
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no-restricted-globals.js
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no-self-assign.js
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no-self-compare.js
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no-sequences.js
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no-setter-return.js
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no-shadow-restricted-names.js
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no-shadow.js
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no-sync.js
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no-tabs.js
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no-ternary.js
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no-this-before-super.js
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no-throw-literal.js
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no-trailing-spaces.js
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no-undef.js
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no-unexpected-multiline.js
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no-unreachable.js
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no-useless-call.js
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no-useless-catch.js
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no-useless-computed-key.js
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no-useless-concat.js
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no-useless-constructor.js
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no-useless-escape.js
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no-useless-rename.js
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no-useless-return.js
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no-var.js
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no-void.js
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no-with.js
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object-curly-newline.js
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object-curly-spacing.js
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object-property-newline.js
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object-shorthand.js
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one-var.js
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operator-assignment.js
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operator-linebreak.js
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prefer-template.js
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quote-props.js
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quotes.js
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radix.js
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require-atomic-updates.js
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require-await.js
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require-jsdoc.js
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require-yield.js
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rest-spread-spacing.js
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semi-spacing.js
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semi-style.js
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semi.js
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strict.js
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symbol-description.js
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valid-typeof.js
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vars-on-top.js
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wrap-iife.js
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wrap-regex.js
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Code Editor : max-len.js
/** * @fileoverview Rule to check for max length on a line. * @author Matt DuVall <http://www.mattduvall.com> * @deprecated in ESLint v8.53.0 */ "use strict"; //------------------------------------------------------------------------------ // Constants //------------------------------------------------------------------------------ const OPTIONS_SCHEMA = { type: "object", properties: { code: { type: "integer", minimum: 0 }, comments: { type: "integer", minimum: 0 }, tabWidth: { type: "integer", minimum: 0 }, ignorePattern: { type: "string" }, ignoreComments: { type: "boolean" }, ignoreStrings: { type: "boolean" }, ignoreUrls: { type: "boolean" }, ignoreTemplateLiterals: { type: "boolean" }, ignoreRegExpLiterals: { type: "boolean" }, ignoreTrailingComments: { type: "boolean" } }, additionalProperties: false }; const OPTIONS_OR_INTEGER_SCHEMA = { anyOf: [ OPTIONS_SCHEMA, { type: "integer", minimum: 0 } ] }; //------------------------------------------------------------------------------ // Rule Definition //------------------------------------------------------------------------------ /** @type {import('../shared/types').Rule} */ module.exports = { meta: { deprecated: true, replacedBy: [], type: "layout", docs: { description: "Enforce a maximum line length", recommended: false, url: "https://eslint.org/docs/latest/rules/max-len" }, schema: [ OPTIONS_OR_INTEGER_SCHEMA, OPTIONS_OR_INTEGER_SCHEMA, OPTIONS_SCHEMA ], messages: { max: "This line has a length of {{lineLength}}. Maximum allowed is {{maxLength}}.", maxComment: "This line has a comment length of {{lineLength}}. Maximum allowed is {{maxCommentLength}}." } }, create(context) { /* * Inspired by http://tools.ietf.org/html/rfc3986#appendix-B, however: * - They're matching an entire string that we know is a URI * - We're matching part of a string where we think there *might* be a URL * - We're only concerned about URLs, as picking out any URI would cause * too many false positives * - We don't care about matching the entire URL, any small segment is fine */ const URL_REGEXP = /[^:/?#]:\/\/[^?#]/u; const sourceCode = context.sourceCode; /** * Computes the length of a line that may contain tabs. The width of each * tab will be the number of spaces to the next tab stop. * @param {string} line The line. * @param {int} tabWidth The width of each tab stop in spaces. * @returns {int} The computed line length. * @private */ function computeLineLength(line, tabWidth) { let extraCharacterCount = 0; line.replace(/\t/gu, (match, offset) => { const totalOffset = offset + extraCharacterCount, previousTabStopOffset = tabWidth ? totalOffset % tabWidth : 0, spaceCount = tabWidth - previousTabStopOffset; extraCharacterCount += spaceCount - 1; // -1 for the replaced tab }); return Array.from(line).length + extraCharacterCount; } // The options object must be the last option specified… const options = Object.assign({}, context.options[context.options.length - 1]); // …but max code length… if (typeof context.options[0] === "number") { options.code = context.options[0]; } // …and tabWidth can be optionally specified directly as integers. if (typeof context.options[1] === "number") { options.tabWidth = context.options[1]; } const maxLength = typeof options.code === "number" ? options.code : 80, tabWidth = typeof options.tabWidth === "number" ? options.tabWidth : 4, ignoreComments = !!options.ignoreComments, ignoreStrings = !!options.ignoreStrings, ignoreTemplateLiterals = !!options.ignoreTemplateLiterals, ignoreRegExpLiterals = !!options.ignoreRegExpLiterals, ignoreTrailingComments = !!options.ignoreTrailingComments || !!options.ignoreComments, ignoreUrls = !!options.ignoreUrls, maxCommentLength = options.comments; let ignorePattern = options.ignorePattern || null; if (ignorePattern) { ignorePattern = new RegExp(ignorePattern, "u"); } //-------------------------------------------------------------------------- // Helpers //-------------------------------------------------------------------------- /** * Tells if a given comment is trailing: it starts on the current line and * extends to or past the end of the current line. * @param {string} line The source line we want to check for a trailing comment on * @param {number} lineNumber The one-indexed line number for line * @param {ASTNode} comment The comment to inspect * @returns {boolean} If the comment is trailing on the given line */ function isTrailingComment(line, lineNumber, comment) { return comment && (comment.loc.start.line === lineNumber && lineNumber <= comment.loc.end.line) && (comment.loc.end.line > lineNumber || comment.loc.end.column === line.length); } /** * Tells if a comment encompasses the entire line. * @param {string} line The source line with a trailing comment * @param {number} lineNumber The one-indexed line number this is on * @param {ASTNode} comment The comment to remove * @returns {boolean} If the comment covers the entire line */ function isFullLineComment(line, lineNumber, comment) { const start = comment.loc.start, end = comment.loc.end, isFirstTokenOnLine = !line.slice(0, comment.loc.start.column).trim(); return comment && (start.line < lineNumber || (start.line === lineNumber && isFirstTokenOnLine)) && (end.line > lineNumber || (end.line === lineNumber && end.column === line.length)); } /** * Check if a node is a JSXEmptyExpression contained in a single line JSXExpressionContainer. * @param {ASTNode} node A node to check. * @returns {boolean} True if the node is a JSXEmptyExpression contained in a single line JSXExpressionContainer. */ function isJSXEmptyExpressionInSingleLineContainer(node) { if (!node || !node.parent || node.type !== "JSXEmptyExpression" || node.parent.type !== "JSXExpressionContainer") { return false; } const parent = node.parent; return parent.loc.start.line === parent.loc.end.line; } /** * Gets the line after the comment and any remaining trailing whitespace is * stripped. * @param {string} line The source line with a trailing comment * @param {ASTNode} comment The comment to remove * @returns {string} Line without comment and trailing whitespace */ function stripTrailingComment(line, comment) { // loc.column is zero-indexed return line.slice(0, comment.loc.start.column).replace(/\s+$/u, ""); } /** * Ensure that an array exists at [key] on `object`, and add `value` to it. * @param {Object} object the object to mutate * @param {string} key the object's key * @param {any} value the value to add * @returns {void} * @private */ function ensureArrayAndPush(object, key, value) { if (!Array.isArray(object[key])) { object[key] = []; } object[key].push(value); } /** * Retrieves an array containing all strings (" or ') in the source code. * @returns {ASTNode[]} An array of string nodes. */ function getAllStrings() { return sourceCode.ast.tokens.filter(token => (token.type === "String" || (token.type === "JSXText" && sourceCode.getNodeByRangeIndex(token.range[0] - 1).type === "JSXAttribute"))); } /** * Retrieves an array containing all template literals in the source code. * @returns {ASTNode[]} An array of template literal nodes. */ function getAllTemplateLiterals() { return sourceCode.ast.tokens.filter(token => token.type === "Template"); } /** * Retrieves an array containing all RegExp literals in the source code. * @returns {ASTNode[]} An array of RegExp literal nodes. */ function getAllRegExpLiterals() { return sourceCode.ast.tokens.filter(token => token.type === "RegularExpression"); } /** * * reduce an array of AST nodes by line number, both start and end. * @param {ASTNode[]} arr array of AST nodes * @returns {Object} accululated AST nodes */ function groupArrayByLineNumber(arr) { const obj = {}; for (let i = 0; i < arr.length; i++) { const node = arr[i]; for (let j = node.loc.start.line; j <= node.loc.end.line; ++j) { ensureArrayAndPush(obj, j, node); } } return obj; } /** * Returns an array of all comments in the source code. * If the element in the array is a JSXEmptyExpression contained with a single line JSXExpressionContainer, * the element is changed with JSXExpressionContainer node. * @returns {ASTNode[]} An array of comment nodes */ function getAllComments() { const comments = []; sourceCode.getAllComments() .forEach(commentNode => { const containingNode = sourceCode.getNodeByRangeIndex(commentNode.range[0]); if (isJSXEmptyExpressionInSingleLineContainer(containingNode)) { // push a unique node only if (comments[comments.length - 1] !== containingNode.parent) { comments.push(containingNode.parent); } } else { comments.push(commentNode); } }); return comments; } /** * Check the program for max length * @param {ASTNode} node Node to examine * @returns {void} * @private */ function checkProgramForMaxLength(node) { // split (honors line-ending) const lines = sourceCode.lines, // list of comments to ignore comments = ignoreComments || maxCommentLength || ignoreTrailingComments ? getAllComments() : []; // we iterate over comments in parallel with the lines let commentsIndex = 0; const strings = getAllStrings(); const stringsByLine = groupArrayByLineNumber(strings); const templateLiterals = getAllTemplateLiterals(); const templateLiteralsByLine = groupArrayByLineNumber(templateLiterals); const regExpLiterals = getAllRegExpLiterals(); const regExpLiteralsByLine = groupArrayByLineNumber(regExpLiterals); lines.forEach((line, i) => { // i is zero-indexed, line numbers are one-indexed const lineNumber = i + 1; /* * if we're checking comment length; we need to know whether this * line is a comment */ let lineIsComment = false; let textToMeasure; /* * We can short-circuit the comment checks if we're already out of * comments to check. */ if (commentsIndex < comments.length) { let comment = null; // iterate over comments until we find one past the current line do { comment = comments[++commentsIndex]; } while (comment && comment.loc.start.line <= lineNumber); // and step back by one comment = comments[--commentsIndex]; if (isFullLineComment(line, lineNumber, comment)) { lineIsComment = true; textToMeasure = line; } else if (ignoreTrailingComments && isTrailingComment(line, lineNumber, comment)) { textToMeasure = stripTrailingComment(line, comment); // ignore multiple trailing comments in the same line let lastIndex = commentsIndex; while (isTrailingComment(textToMeasure, lineNumber, comments[--lastIndex])) { textToMeasure = stripTrailingComment(textToMeasure, comments[lastIndex]); } } else { textToMeasure = line; } } else { textToMeasure = line; } if (ignorePattern && ignorePattern.test(textToMeasure) || ignoreUrls && URL_REGEXP.test(textToMeasure) || ignoreStrings && stringsByLine[lineNumber] || ignoreTemplateLiterals && templateLiteralsByLine[lineNumber] || ignoreRegExpLiterals && regExpLiteralsByLine[lineNumber] ) { // ignore this line return; } const lineLength = computeLineLength(textToMeasure, tabWidth); const commentLengthApplies = lineIsComment && maxCommentLength; if (lineIsComment && ignoreComments) { return; } const loc = { start: { line: lineNumber, column: 0 }, end: { line: lineNumber, column: textToMeasure.length } }; if (commentLengthApplies) { if (lineLength > maxCommentLength) { context.report({ node, loc, messageId: "maxComment", data: { lineLength, maxCommentLength } }); } } else if (lineLength > maxLength) { context.report({ node, loc, messageId: "max", data: { lineLength, maxLength } }); } }); } //-------------------------------------------------------------------------- // Public API //-------------------------------------------------------------------------- return { Program: checkProgramForMaxLength }; } };
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