命令行接口

ESLint 命令行界面 (CLI) 允许您从终端执行 linting。CLI 有多种选项，您可以传递这些选项来配置 ESLint。

运行 CLI

ESLint 需要 Node.js 来安装。按照 入门指南 中的说明安装 ESLint。

大多数用户使用 npx 在命令行上运行 ESLint，如下所示：

npx eslint [options] [file|dir|glob]*

如：

# Run on two files
npx eslint file1.js file2.js

# Run on multiple files
npx eslint lib/**

请注意，当传递一个 glob 作为参数时，它会被你的 shell 扩展。扩展的结果可能因您的 shell 及其配置而异。如果要使用 node glob 语法，则必须引用参数（如果需要在 Windows 中运行，请使用双引号），如下所示：

npx eslint "lib/**"

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将多个值传递给一个选项

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npx eslint --ext .jsx --ext .js lib/
# OR
npx eslint --ext .jsx,.js lib/

选项

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eslint [options] file.js [file.js] [dir]

Basic configuration:
  --no-eslintrc                   Disable use of configuration from .eslintrc.*
  -c, --config path::String       Use this configuration, overriding .eslintrc.* config options if present
  --env [String]                  Specify environments
  --ext [String]                  Specify JavaScript file extensions
  --global [String]               Define global variables
  --parser String                 Specify the parser to be used
  --parser-options Object         Specify parser options
  --resolve-plugins-relative-to path::String  A folder where plugins should be resolved from, CWD by default

Specify rules and plugins:
  --plugin [String]               Specify plugins
  --rule Object                   Specify rules
  --rulesdir [path::String]       Load additional rules from this directory. Deprecated: Use rules from plugins

Fix problems:
  --fix                           Automatically fix problems
  --fix-dry-run                   Automatically fix problems without saving the changes to the file system
  --fix-type Array                Specify the types of fixes to apply (directive, problem, suggestion, layout)

Ignore files:
  --ignore-path path::String      Specify path of ignore file
  --no-ignore                     Disable use of ignore files and patterns
  --ignore-pattern [String]       Pattern of files to ignore (in addition to those in .eslintignore)

Use stdin:
  --stdin                         Lint code provided on <STDIN> - default: false
  --stdin-filename String         Specify filename to process STDIN as

Handle warnings:
  --quiet                         Report errors only - default: false
  --max-warnings Int              Number of warnings to trigger nonzero exit code - default: -1

Output:
  -o, --output-file path::String  Specify file to write report to
  -f, --format String             Use a specific output format - default: stylish
  --color, --no-color             Force enabling/disabling of color

Inline configuration comments:
  --no-inline-config              Prevent comments from changing config or rules
  --report-unused-disable-directives  Adds reported errors for unused eslint-disable directives

Caching:
  --cache                         Only check changed files - default: false
  --cache-file path::String       Path to the cache file. Deprecated: use --cache-location - default: .eslintcache
  --cache-location path::String   Path to the cache file or directory
  --cache-strategy String         Strategy to use for detecting changed files in the cache - either: metadata or content - default: metadata

Miscellaneous:
  --init                          Run config initialization wizard - default: false
  --env-info                      Output execution environment information - default: false
  --no-error-on-unmatched-pattern  Prevent errors when pattern is unmatched
  --exit-on-fatal-error           Exit with exit code 2 in case of fatal error - default: false
  --debug                         Output debugging information
  -h, --help                      Show help
  -v, --version                   Output the version number
  --print-config path::String     Print the configuration for the given file

基本配置

--no-eslintrc

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--no-eslintrc 示例
npx eslint --no-eslintrc file.js

-c、--config

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-c、--config 示例
npx eslint -c ~/my-eslint.json file.js

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--env

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--env 示例
npx eslint --env browser,node file.js
npx eslint --env browser --env node file.js

--ext

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--ext 示例
# Use only .ts extension
npx eslint . --ext .ts

# Use both .js and .ts
npx eslint . --ext .js --ext .ts

# Also use both .js and .ts
npx eslint . --ext .js,.ts

--global

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--global 示例
npx eslint --global require,exports:true file.js
npx eslint --global require --global exports:true

--parser

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--parser 示例
# Use TypeScript ESLint parser
npx eslint --parser @typescript-eslint/parser file.ts

--parser-options

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--parser-options 示例
echo '3 ** 4' | npx eslint --stdin --parser-options ecmaVersion:6 # fails with a parsing error
echo '3 ** 4' | npx eslint --stdin --parser-options ecmaVersion:7 # succeeds, yay!

--resolve-plugins-relative-to

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--resolve-plugins-relative-to 示例
npx eslint --config ~/personal-eslintrc.js \
--resolve-plugins-relative-to /usr/local/lib/

指定规则和插件

--plugin

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--plugin 示例
npx eslint --plugin jquery file.js
npx eslint --plugin eslint-plugin-mocha file.js

--rule

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--rule 示例
# Apply single rule
npx eslint --rule 'quotes: [error, double]'
# Apply multiple rules
npx eslint --rule 'guard-for-in: error' --rule 'brace-style: [error, 1tbs]'
# Apply rule from jquery plugin
npx eslint --rule 'jquery/dollar-sign: error'
# Only apply rule from the command line
npx eslint --rule 'quotes: [error, double]' --no-eslintrc

--rulesdir

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--rulesdir 示例
npx eslint --rulesdir my-rules/ file.js
npx eslint --rulesdir my-rules/ --rulesdir my-other-rules/ file.js

修复问题

--fix

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  1. 当代码通过管道传输到 ESLint 时，此选项会引发错误。
  2. 此选项对使用处理器的代码没有影响，除非处理器选择允许自动修复。

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--fix 示例
npx eslint --fix file.js

--fix-dry-run

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--fix-dry-run 示例
getSomeText | npx eslint --stdin --fix-dry-run --format json

--fix-type

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--fix-type 示例
npx eslint --fix --fix-type suggestion .
npx eslint --fix --fix-type suggestion --fix-type problem .
npx eslint --fix --fix-type suggestion,layout .

忽略文件

--ignore-path

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--ignore-path 示例
npx eslint --ignore-path tmp/.eslintignore file.js
npx eslint --ignore-path .gitignore file.js

--no-ignore

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--no-ignore 示例
npx eslint --no-ignore file.js

--ignore-pattern

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--ignore-pattern 示例
npx eslint --ignore-pattern "/lib/" --ignore-pattern "/src/vendor/*" .

使用标准输入

--stdin

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--stdin 示例
cat myfile.js | npx eslint --stdin

--stdin-filename

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--stdin-filename 示例
cat myfile.js | npx eslint --stdin --stdin-filename myfile.js

处理警告

--quiet

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--quiet 示例
npx eslint --quiet file.js

--max-warnings

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--max-warnings 示例
npx eslint --max-warnings 10 file.js

输出

-o、--output-file

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-o、--output-file 示例
npx eslint -o ./test/test.html

-f、--format

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# Saves the output into the `results.txt` file.
npx eslint -f compact file.js > results.txt
-f、--format 示例

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npx eslint --format compact file.js

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npx eslint -f ./customformat.js file.js

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npm install eslint-formatter-pretty

# Then run one of the following commands
npx eslint -f pretty file.js
# or alternatively
npx eslint -f eslint-formatter-pretty file.js

--color 和 --no-color

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--color 和 --no-color 示例
npx eslint --color file.js | cat
npx eslint --no-color file.js

内联配置注释

--no-inline-config

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--no-inline-config 示例
npx eslint --no-inline-config file.js

--report-unused-disable-directives

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7NMhyfB0nBVE8AKFCqo/ag==

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--report-unused-disable-directives 示例
npx eslint --report-unused-disable-directives file.js

缓存

--cache

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--cache 示例
npx eslint --cache file.js

--cache-file

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--cache-location

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--cache-location 示例
npx eslint "src/**/*.js" --cache --cache-location "/Users/user/.eslintcache/"

--cache-strategy

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--cache-strategy 示例
npx eslint "src/**/*.js" --cache --cache-strategy content

其他

--init

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--init 示例
npx eslint --init

--env-info

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--env-info 示例
npx eslint --env-info

--no-error-on-unmatched-pattern

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--no-error-on-unmatched-pattern 示例
npx eslint --no-error-on-unmatched-pattern --ext .ts "lib/*"

--exit-on-fatal-error

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--exit-on-fatal-error 示例
npx eslint --exit-on-fatal-error file.js

--debug

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--debug 示例
npx eslint --debug test.js

-h、--help

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-h、--help 示例
npx eslint --help

-v、--version

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-v、--version 示例
npx eslint --version

--print-config

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--print-config 示例
npx eslint --print-config file.js

退出代码

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