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nextTick","/document/source-vue3/guide/scheduler-nexttick","document/41.source-vue3/01.guide/06.scheduler-nexttick",{"title":1407,"path":1450,"stem":1451},"/document/source-vue3/guide/vnode-patch","document/41.source-vue3/01.guide/07.vnode-patch",{"title":1411,"path":1453,"stem":1454},"/document/source-vue3/guide/compile","document/41.source-vue3/01.guide/08.compile",{"title":1456,"icon":1457,"path":1458,"stem":1459,"children":1460,"page":50},"性能优化","i-lucide-zap","/document/performance","document/42.performance",[1461],{"title":1462,"path":1463,"stem":1464,"children":1465},"性能优化简介","/document/performance/guide","document/42.performance/01.guide/01.index",[1466,1467,1471,1475,1479,1483],{"title":1462,"path":1463,"stem":1464},{"title":1468,"path":1469,"stem":1470},"加载优化","/document/performance/guide/loading","document/42.performance/01.guide/02.loading",{"title":1472,"path":1473,"stem":1474},"渲染优化","/document/performance/guide/rendering","document/42.performance/01.guide/03.rendering",{"title":1476,"path":1477,"stem":1478},"缓存策略","/document/performance/guide/cache","document/42.performance/01.guide/04.cache",{"title":1480,"path":1481,"stem":1482},"构建产物优化","/document/performance/guide/build","document/42.performance/01.guide/05.build",{"title":1484,"path":1485,"stem":1486},"性能指标与工具","/document/performance/guide/metrics","document/42.performance/01.guide/06.metrics",{"title":1488,"icon":1489,"path":1490,"stem":1491,"children":1492,"page":50},"前端监控","i-lucide-activity","/document/monitor","document/43.monitor",[1493],{"title":1494,"path":1495,"stem":1496,"children":1497},"前端监控简介","/document/monitor/guide","document/43.monitor/01.guide/01.index",[1498,1499,1503,1507,1511,1515],{"title":1494,"path":1495,"stem":1496},{"title":1500,"path":1501,"stem":1502},"错误采集","/document/monitor/guide/error","document/43.monitor/01.guide/02.error",{"title":1504,"path":1505,"stem":1506},"埋点与上报","/document/monitor/guide/tracking","document/43.monitor/01.guide/03.tracking",{"title":1508,"path":1509,"stem":1510},"性能数据上报","/document/monitor/guide/performance-data","document/43.monitor/01.guide/04.performance-data",{"title":1512,"path":1513,"stem":1514},"Sentry 实践","/document/monitor/guide/sentry","document/43.monitor/01.guide/05.sentry",{"title":1516,"path":1517,"stem":1518},"日志与告警","/document/monitor/guide/logging","document/43.monitor/01.guide/06.logging",{"id":1520,"title":1521,"body":1522,"description":2710,"extension":2661,"links":2711,"meta":2712,"navigation":2713,"path":460,"seo":2714,"stem":461,"__hash__":2715},"docs/document/11.eslint/01.guide/02.install.md","如何安装 ESLint 以及运行，全面详细讲解",{"type":1523,"value":1524,"toc":2689},"minimal",[1525,1530,1534,1537,1541,1544,1575,1578,1584,1595,1597,1601,1606,1609,1630,1634,1649,1652,1654,1658,1661,1679,1688,1690,1694,1697,1712,1715,1722,1769,1774,1794,1799,1824,1829,1854,1859,1868,1873,1893,1898,1924,1927,1934,1936,1940,1945,2248,2254,2256,2260,2264,2271,2285,2291,2293,2297,2304,2349,2352,2360,2367,2374,2376,2380,2387,2404,2407,2412,2414,2418,2425,2494,2497,2512,2515,2529,2532,2534,2538,2541,2544,2546,2550,2569,2571,2575,2581,2588,2594,2597,2599,2603,2606,2650,2657,2674,2680,2682,2685],[1526,1527,1529],"h2",{"id":1528},"引言","🎯 引言",[1531,1532,1533],"p",{},"学会安装和运行 ESLint，你将能够轻松检测 JavaScript 代码中的潜在错误和风格问题，提升代码质量，使团队协作更高效。本文会带你一步步完成 ESLint 的安装和基本使用，不跳步，适合刚入门的前端小白。",[1535,1536],"hr",{},[1526,1538,1540],{"id":1539},"eslint-安装准备工作","🔧 ESLint 安装准备工作",[1531,1542,1543],{},"首先，确保你已经安装好 Node.js 环境。你可以在终端输入：",[1545,1546,1551],"pre",{"className":1547,"code":1548,"language":1549,"meta":1550,"style":1550},"language-bash shiki shiki-themes material-theme-lighter material-theme material-theme-palenight","node -v\nnpm -v\n","bash","",[1552,1553,1554,1567],"code",{"__ignoreMap":1550},[1555,1556,1559,1563],"span",{"class":1557,"line":1558},"line",1,[1555,1560,1562],{"class":1561},"sYGMc","node",[1555,1564,1566],{"class":1565},"sIEYB"," -v\n",[1555,1568,1570,1573],{"class":1557,"line":1569},2,[1555,1571,1572],{"class":1561},"npm",[1555,1574,1566],{"class":1565},[1531,1576,1577],{},"如果能看到版本号，说明 Node.js 和 npm 已经安装成功。",[1579,1580,1581],"tip",{},[1531,1582,1583],{},"Node.js 是运行 JavaScript 的环境，npm 是 Node.js 自带的包管理工具，安装 ESLint 需要用它们。",[1531,1585,1586,1587,1594],{},"如果未安装，可以去 ",[1588,1589,1593],"a",{"href":1590,"rel":1591},"https://nodejs.org/",[1592],"nofollow","Node.js 官网"," 下载并安装最新的稳定版本。",[1535,1596],{},[1526,1598,1600],{"id":1599},"eslint-安装步骤详解","🛠 ESLint 安装步骤详解",[1602,1603,1605],"h3",{"id":1604},"_1-创建项目文件夹可选","1. 创建项目文件夹（可选）",[1531,1607,1608],{},"如果你已经有项目，可以跳过这步。新建项目示例：",[1545,1610,1612],{"className":1547,"code":1611,"language":1549,"meta":1550,"style":1550},"mkdir my-eslint-project\ncd my-eslint-project\n",[1552,1613,1614,1622],{"__ignoreMap":1550},[1555,1615,1616,1619],{"class":1557,"line":1558},[1555,1617,1618],{"class":1561},"mkdir",[1555,1620,1621],{"class":1565}," my-eslint-project\n",[1555,1623,1624,1628],{"class":1557,"line":1569},[1555,1625,1627],{"class":1626},"swgpB","cd",[1555,1629,1621],{"class":1565},[1602,1631,1633],{"id":1632},"_2-初始化项目生成-packagejson","2. 初始化项目（生成 package.json）",[1545,1635,1637],{"className":1547,"code":1636,"language":1549,"meta":1550,"style":1550},"npm init -y\n",[1552,1638,1639],{"__ignoreMap":1550},[1555,1640,1641,1643,1646],{"class":1557,"line":1558},[1555,1642,1572],{"class":1561},[1555,1644,1645],{"class":1565}," init",[1555,1647,1648],{"class":1565}," -y\n",[1531,1650,1651],{},"这条命令会生成一个默认配置的 package.json 文件，用来管理项目依赖。",[1535,1653],{},[1602,1655,1657],{"id":1656},"_3-安装-eslint","3. 安装 ESLint",[1531,1659,1660],{},"ESLint 推荐作为项目的开发依赖安装，执行：",[1545,1662,1664],{"className":1547,"code":1663,"language":1549,"meta":1550,"style":1550},"npm install eslint --save-dev\n",[1552,1665,1666],{"__ignoreMap":1550},[1555,1667,1668,1670,1673,1676],{"class":1557,"line":1558},[1555,1669,1572],{"class":1561},[1555,1671,1672],{"class":1565}," install",[1555,1674,1675],{"class":1565}," eslint",[1555,1677,1678],{"class":1565}," --save-dev\n",[1579,1680,1681],{},[1531,1682,1683,1684,1687],{},"使用 ",[1552,1685,1686],{},"--save-dev"," 参数，表示 ESLint 只在开发环境需要，避免发布时带上无关包。",[1535,1689],{},[1602,1691,1693],{"id":1692},"_4-初始化-eslint-配置","4. 初始化 ESLint 配置",[1531,1695,1696],{},"安装完成后，使用以下命令生成 ESLint 配置文件：",[1545,1698,1700],{"className":1547,"code":1699,"language":1549,"meta":1550,"style":1550},"npx eslint --init\n",[1552,1701,1702],{"__ignoreMap":1550},[1555,1703,1704,1707,1709],{"class":1557,"line":1558},[1555,1705,1706],{"class":1561},"npx",[1555,1708,1675],{"class":1565},[1555,1710,1711],{"class":1565}," --init\n",[1531,1713,1714],{},"你会依次看到几个问题，以下是推荐选择（✅ 表示你选择的内容）：",[1716,1717,1718],"ol",{},[1719,1720,1721],"li",{},"你想要检查哪些文件的代码质量？",[1545,1723,1727],{"className":1724,"code":1725,"language":1726,"meta":1550,"style":1550},"language-plaintext shiki shiki-themes material-theme-lighter material-theme material-theme-palenight","? What do you want to lint? …\n✔ JavaScript\n  JSON\n  JSON with comments\n  JSON5\n  Markdown\n  CSS\n","plaintext",[1552,1728,1729,1734,1739,1745,1751,1757,1763],{"__ignoreMap":1550},[1555,1730,1731],{"class":1557,"line":1558},[1555,1732,1733],{},"? What do you want to lint? …\n",[1555,1735,1736],{"class":1557,"line":1569},[1555,1737,1738],{},"✔ JavaScript\n",[1555,1740,1742],{"class":1557,"line":1741},3,[1555,1743,1744],{},"  JSON\n",[1555,1746,1748],{"class":1557,"line":1747},4,[1555,1749,1750],{},"  JSON with comments\n",[1555,1752,1754],{"class":1557,"line":1753},5,[1555,1755,1756],{},"  JSON5\n",[1555,1758,1760],{"class":1557,"line":1759},6,[1555,1761,1762],{},"  Markdown\n",[1555,1764,1766],{"class":1557,"line":1765},7,[1555,1767,1768],{},"  CSS\n",[1716,1770,1771],{"start":1569},[1719,1772,1773],{},"你希望 ESLint 做什么？",[1545,1775,1777],{"className":1724,"code":1776,"language":1726,"meta":1550,"style":1550},"? How would you like to use ESLint? …\n  To check syntax only\n✔ To check syntax and find problems\n",[1552,1778,1779,1784,1789],{"__ignoreMap":1550},[1555,1780,1781],{"class":1557,"line":1558},[1555,1782,1783],{},"? How would you like to use ESLint? …\n",[1555,1785,1786],{"class":1557,"line":1569},[1555,1787,1788],{},"  To check syntax only\n",[1555,1790,1791],{"class":1557,"line":1741},[1555,1792,1793],{},"✔ To check syntax and find problems\n",[1716,1795,1796],{"start":1741},[1719,1797,1798],{},"项目使用的模块标准？",[1545,1800,1802],{"className":1724,"code":1801,"language":1726,"meta":1550,"style":1550},"? What type of modules does your project use? …\n✔ JavaScript modules (import/export)\n  CommonJS (require/exports)\n  None of these\n",[1552,1803,1804,1809,1814,1819],{"__ignoreMap":1550},[1555,1805,1806],{"class":1557,"line":1558},[1555,1807,1808],{},"? What type of modules does your project use? …\n",[1555,1810,1811],{"class":1557,"line":1569},[1555,1812,1813],{},"✔ JavaScript modules (import/export)\n",[1555,1815,1816],{"class":1557,"line":1741},[1555,1817,1818],{},"  CommonJS (require/exports)\n",[1555,1820,1821],{"class":1557,"line":1747},[1555,1822,1823],{},"  None of these\n",[1716,1825,1826],{"start":1747},[1719,1827,1828],{},"你的项目使用哪个框架？",[1545,1830,1832],{"className":1724,"code":1831,"language":1726,"meta":1550,"style":1550},"? Which framework does your project use? …\n  React\n  Vue.js\n✔ None of these\n",[1552,1833,1834,1839,1844,1849],{"__ignoreMap":1550},[1555,1835,1836],{"class":1557,"line":1558},[1555,1837,1838],{},"? Which framework does your project use? …\n",[1555,1840,1841],{"class":1557,"line":1569},[1555,1842,1843],{},"  React\n",[1555,1845,1846],{"class":1557,"line":1741},[1555,1847,1848],{},"  Vue.js\n",[1555,1850,1851],{"class":1557,"line":1747},[1555,1852,1853],{},"✔ None of these\n",[1716,1855,1856],{"start":1753},[1719,1857,1858],{},"项目是否使用 TypeScript？",[1545,1860,1862],{"className":1724,"code":1861,"language":1726,"meta":1550,"style":1550},"? Does your project use TypeScript? › No\n",[1552,1863,1864],{"__ignoreMap":1550},[1555,1865,1866],{"class":1557,"line":1558},[1555,1867,1861],{},[1716,1869,1870],{"start":1759},[1719,1871,1872],{},"你的代码运行在哪些环境？",[1545,1874,1876],{"className":1724,"code":1875,"language":1726,"meta":1550,"style":1550},"? Where does your code run? …  (Press \u003Cspace> to select, \u003Ca> to toggle all, \u003Ci> to invert selection)\n✔ Browser\n  Node\n",[1552,1877,1878,1883,1888],{"__ignoreMap":1550},[1555,1879,1880],{"class":1557,"line":1558},[1555,1881,1882],{},"? Where does your code run? …  (Press \u003Cspace> to select, \u003Ca> to toggle all, \u003Ci> to invert selection)\n",[1555,1884,1885],{"class":1557,"line":1569},[1555,1886,1887],{},"✔ Browser\n",[1555,1889,1890],{"class":1557,"line":1741},[1555,1891,1892],{},"  Node\n",[1716,1894,1895],{"start":1765},[1719,1896,1897],{},"是否立即安装所需依赖？",[1545,1899,1901],{"className":1724,"code":1900,"language":1726,"meta":1550,"style":1550},"The config that you've selected requires the following dependencies:\n\neslint, @eslint/js, globals\n? Would you like to install them now? › No\n",[1552,1902,1903,1908,1914,1919],{"__ignoreMap":1550},[1555,1904,1905],{"class":1557,"line":1558},[1555,1906,1907],{},"The config that you've selected requires the following dependencies:\n",[1555,1909,1910],{"class":1557,"line":1569},[1555,1911,1913],{"emptyLinePlaceholder":1912},true,"\n",[1555,1915,1916],{"class":1557,"line":1741},[1555,1917,1918],{},"eslint, @eslint/js, globals\n",[1555,1920,1921],{"class":1557,"line":1747},[1555,1922,1923],{},"? Would you like to install them now? › No\n",[1531,1925,1926],{},"根据你的项目需求选择即可。",[1531,1928,1929,1930,1933],{},"配置完成后，项目根目录会生成 ",[1552,1931,1932],{},"eslint.config.mjs"," 文件。",[1535,1935],{},[1602,1937,1939],{"id":1938},"_5-eslint-配置文件示例","5. ESLint 配置文件示例",[1531,1941,1942,1944],{},[1552,1943,1932],{}," 示例：",[1545,1946,1950],{"className":1947,"code":1948,"language":1949,"meta":1550,"style":1550},"language-js shiki shiki-themes material-theme-lighter material-theme material-theme-palenight","// eslint.config.js (扁平结构, 自 ESLint v9 推荐)\nimport js from '@eslint/js';\nimport globals from 'globals';\nimport { defineConfig } from 'eslint/config';\n\nexport default defineConfig([\n    {\n        // 匹配所有 JavaScript 文件（包括 .js, .mjs, .cjs），表示以下规则只适用于这些文件。\n        files: ['**/*.{js,mjs,cjs}'],\n\n        // 引入了官方提供的 @eslint/js 插件，提供了内建的 JavaScript 语法规则支持。\n        plugins: { js },\n\n        // 这是 @eslint/js 提供的一组 推荐规则，包括常见的代码风格、最佳实践、潜在错误检测等\n        extends: ['js/recommended'],\n\n        // 它会自动启用浏览器全局变量（如 window, document, console 等），防止 ESLint 报错说这些变量未定义。\n        languageOptions: { globals: globals.browser },\n\n        // rules（规则）是 ESLint 用来控制代码检查行为的配置项。例如设置了禁止使用分号。\n        rules: {\n            semi: ['error', 'never'],\n        },\n    },\n]);\n","js",[1552,1951,1952,1958,1984,2002,2027,2031,2044,2049,2055,2081,2086,2092,2107,2112,2118,2139,2144,2150,2175,2180,2186,2197,2228,2234,2240],{"__ignoreMap":1550},[1555,1953,1954],{"class":1557,"line":1558},[1555,1955,1957],{"class":1956},"syuKq","// eslint.config.js (扁平结构, 自 ESLint v9 推荐)\n",[1555,1959,1960,1964,1968,1971,1975,1978,1981],{"class":1557,"line":1569},[1555,1961,1963],{"class":1962},"s8pZq","import",[1555,1965,1967],{"class":1966},"sndM8"," js ",[1555,1969,1970],{"class":1962},"from",[1555,1972,1974],{"class":1973},"s86vT"," '",[1555,1976,1977],{"class":1565},"@eslint/js",[1555,1979,1980],{"class":1973},"'",[1555,1982,1983],{"class":1973},";\n",[1555,1985,1986,1988,1991,1993,1995,1998,2000],{"class":1557,"line":1741},[1555,1987,1963],{"class":1962},[1555,1989,1990],{"class":1966}," globals ",[1555,1992,1970],{"class":1962},[1555,1994,1974],{"class":1973},[1555,1996,1997],{"class":1565},"globals",[1555,1999,1980],{"class":1973},[1555,2001,1983],{"class":1973},[1555,2003,2004,2006,2009,2012,2015,2018,2020,2023,2025],{"class":1557,"line":1747},[1555,2005,1963],{"class":1962},[1555,2007,2008],{"class":1973}," {",[1555,2010,2011],{"class":1966}," defineConfig",[1555,2013,2014],{"class":1973}," }",[1555,2016,2017],{"class":1962}," from",[1555,2019,1974],{"class":1973},[1555,2021,2022],{"class":1565},"eslint/config",[1555,2024,1980],{"class":1973},[1555,2026,1983],{"class":1973},[1555,2028,2029],{"class":1557,"line":1753},[1555,2030,1913],{"emptyLinePlaceholder":1912},[1555,2032,2033,2036,2039,2041],{"class":1557,"line":1759},[1555,2034,2035],{"class":1962},"export",[1555,2037,2038],{"class":1962}," default",[1555,2040,2011],{"class":1626},[1555,2042,2043],{"class":1966},"([\n",[1555,2045,2046],{"class":1557,"line":1765},[1555,2047,2048],{"class":1973},"    {\n",[1555,2050,2052],{"class":1557,"line":2051},8,[1555,2053,2054],{"class":1956},"        // 匹配所有 JavaScript 文件（包括 .js, .mjs, .cjs），表示以下规则只适用于这些文件。\n",[1555,2056,2058,2062,2065,2068,2070,2073,2075,2078],{"class":1557,"line":2057},9,[1555,2059,2061],{"class":2060},"sd2Uz","        files",[1555,2063,2064],{"class":1973},":",[1555,2066,2067],{"class":1966}," [",[1555,2069,1980],{"class":1973},[1555,2071,2072],{"class":1565},"**/*.{js,mjs,cjs}",[1555,2074,1980],{"class":1973},[1555,2076,2077],{"class":1966},"]",[1555,2079,2080],{"class":1973},",\n",[1555,2082,2084],{"class":1557,"line":2083},10,[1555,2085,1913],{"emptyLinePlaceholder":1912},[1555,2087,2089],{"class":1557,"line":2088},11,[1555,2090,2091],{"class":1956},"        // 引入了官方提供的 @eslint/js 插件，提供了内建的 JavaScript 语法规则支持。\n",[1555,2093,2095,2098,2100,2102,2104],{"class":1557,"line":2094},12,[1555,2096,2097],{"class":2060},"        plugins",[1555,2099,2064],{"class":1973},[1555,2101,2008],{"class":1973},[1555,2103,1967],{"class":1966},[1555,2105,2106],{"class":1973},"},\n",[1555,2108,2110],{"class":1557,"line":2109},13,[1555,2111,1913],{"emptyLinePlaceholder":1912},[1555,2113,2115],{"class":1557,"line":2114},14,[1555,2116,2117],{"class":1956},"        // 这是 @eslint/js 提供的一组 推荐规则，包括常见的代码风格、最佳实践、潜在错误检测等\n",[1555,2119,2121,2124,2126,2128,2130,2133,2135,2137],{"class":1557,"line":2120},15,[1555,2122,2123],{"class":2060},"        extends",[1555,2125,2064],{"class":1973},[1555,2127,2067],{"class":1966},[1555,2129,1980],{"class":1973},[1555,2131,2132],{"class":1565},"js/recommended",[1555,2134,1980],{"class":1973},[1555,2136,2077],{"class":1966},[1555,2138,2080],{"class":1973},[1555,2140,2142],{"class":1557,"line":2141},16,[1555,2143,1913],{"emptyLinePlaceholder":1912},[1555,2145,2147],{"class":1557,"line":2146},17,[1555,2148,2149],{"class":1956},"        // 它会自动启用浏览器全局变量（如 window, document, console 等），防止 ESLint 报错说这些变量未定义。\n",[1555,2151,2153,2156,2158,2160,2163,2165,2167,2170,2173],{"class":1557,"line":2152},18,[1555,2154,2155],{"class":2060},"        languageOptions",[1555,2157,2064],{"class":1973},[1555,2159,2008],{"class":1973},[1555,2161,2162],{"class":2060}," globals",[1555,2164,2064],{"class":1973},[1555,2166,2162],{"class":1966},[1555,2168,2169],{"class":1973},".",[1555,2171,2172],{"class":1966},"browser ",[1555,2174,2106],{"class":1973},[1555,2176,2178],{"class":1557,"line":2177},19,[1555,2179,1913],{"emptyLinePlaceholder":1912},[1555,2181,2183],{"class":1557,"line":2182},20,[1555,2184,2185],{"class":1956},"        // rules（规则）是 ESLint 用来控制代码检查行为的配置项。例如设置了禁止使用分号。\n",[1555,2187,2189,2192,2194],{"class":1557,"line":2188},21,[1555,2190,2191],{"class":2060},"        rules",[1555,2193,2064],{"class":1973},[1555,2195,2196],{"class":1973}," {\n",[1555,2198,2200,2203,2205,2207,2209,2212,2214,2217,2219,2222,2224,2226],{"class":1557,"line":2199},22,[1555,2201,2202],{"class":2060},"            semi",[1555,2204,2064],{"class":1973},[1555,2206,2067],{"class":1966},[1555,2208,1980],{"class":1973},[1555,2210,2211],{"class":1565},"error",[1555,2213,1980],{"class":1973},[1555,2215,2216],{"class":1973},",",[1555,2218,1974],{"class":1973},[1555,2220,2221],{"class":1565},"never",[1555,2223,1980],{"class":1973},[1555,2225,2077],{"class":1966},[1555,2227,2080],{"class":1973},[1555,2229,2231],{"class":1557,"line":2230},23,[1555,2232,2233],{"class":1973},"        },\n",[1555,2235,2237],{"class":1557,"line":2236},24,[1555,2238,2239],{"class":1973},"    },\n",[1555,2241,2243,2246],{"class":1557,"line":2242},25,[1555,2244,2245],{"class":1966},"])",[1555,2247,1983],{"class":1973},[2249,2250,2251],"warning",{},[1531,2252,2253],{},"注意：这个是新版的配置，支持不同文件类型，使用不同的规则。",[1535,2255],{},[1526,2257,2259],{"id":2258},"️-eslint-如何运行","▶️ ESLint 如何运行？",[1602,2261,2263],{"id":2262},"_1-在命令行运行-eslint","1. 在命令行运行 ESLint",[1531,2265,2266,2267,2270],{},"假设你有一个 ",[1552,2268,2269],{},"src"," 文件夹，里面有代码文件。运行：",[1545,2272,2274],{"className":1547,"code":2273,"language":1549,"meta":1550,"style":1550},"npx eslint src\n",[1552,2275,2276],{"__ignoreMap":1550},[1555,2277,2278,2280,2282],{"class":1557,"line":1558},[1555,2279,1706],{"class":1561},[1555,2281,1675],{"class":1565},[1555,2283,2284],{"class":1565}," src\n",[1531,2286,2287,2288,2290],{},"ESLint 会检查 ",[1552,2289,2269],{}," 里所有支持的文件，输出错误和警告。",[1535,2292],{},[1602,2294,2296],{"id":2295},"_2-运行示例解释","2. 运行示例解释",[1531,2298,2299,2300,2303],{},"假设 ",[1552,2301,2302],{},"src/index.js"," 代码是：",[1545,2305,2307],{"className":1947,"code":2306,"language":1949,"meta":1550,"style":1550},"const name = '张三';\n\nconsole.log(nam);\n",[1552,2308,2309,2330,2334],{"__ignoreMap":1550},[1555,2310,2311,2315,2318,2321,2323,2326,2328],{"class":1557,"line":1558},[1555,2312,2314],{"class":2313},"s50WR","const",[1555,2316,2317],{"class":1966}," name ",[1555,2319,2320],{"class":1973},"=",[1555,2322,1974],{"class":1973},[1555,2324,2325],{"class":1565},"张三",[1555,2327,1980],{"class":1973},[1555,2329,1983],{"class":1973},[1555,2331,2332],{"class":1557,"line":1569},[1555,2333,1913],{"emptyLinePlaceholder":1912},[1555,2335,2336,2339,2341,2344,2347],{"class":1557,"line":1741},[1555,2337,2338],{"class":1966},"console",[1555,2340,2169],{"class":1973},[1555,2342,2343],{"class":1626},"log",[1555,2345,2346],{"class":1966},"(nam)",[1555,2348,1983],{"class":1973},[1531,2350,2351],{},"运行 ESLint 后，输出类似：",[1545,2353,2358],{"className":2354,"code":2356,"language":2357},[2355],"language-text","src/index.js\n  1:7   error  'name' is assigned a value but never used  no-unused-vars\n  3:13  error  'nam' is not defined                       no-undef\n\n✖ 2 problems (2 errors, 0 warnings)\n","text",[1552,2359,2356],{"__ignoreMap":1550},[1531,2361,2362,2363,2366],{},"告诉你第 1 行的 ",[1552,2364,2365],{},"name"," 定义了，但是未使用，是个错误。",[1531,2368,2369,2370,2373],{},"告诉你第 3 行的 ",[1552,2371,2372],{},"nam"," 未定义，是个错误。",[1535,2375],{},[1602,2377,2379],{"id":2378},"_3-自动修复","3. 自动修复",[1531,2381,2382,2383,2386],{},"ESLint 提供自动修复功能，可以用参数 ",[1552,2384,2385],{},"--fix"," 让它修正一些格式问题：",[1545,2388,2390],{"className":1547,"code":2389,"language":1549,"meta":1550,"style":1550},"npx eslint src --fix\n",[1552,2391,2392],{"__ignoreMap":1550},[1555,2393,2394,2396,2398,2401],{"class":1557,"line":1558},[1555,2395,1706],{"class":1561},[1555,2397,1675],{"class":1565},[1555,2399,2400],{"class":1565}," src",[1555,2402,2403],{"class":1565}," --fix\n",[1531,2405,2406],{},"它会自动加上漏掉的分号，调整缩进等。",[2249,2408,2409],{},[1531,2410,2411],{},"注意：--fix 一般是用来修复格式问题。并不是所有 ESLint 问题都能修复。",[1535,2413],{},[1602,2415,2417],{"id":2416},"_4-配合-packagejson-脚本","4. 配合 package.json 脚本",[1531,2419,2420,2421,2424],{},"为了方便运行，可以在 ",[1552,2422,2423],{},"package.json"," 添加脚本：",[1545,2426,2430],{"className":2427,"code":2428,"language":2429,"meta":1550,"style":1550},"language-json shiki shiki-themes material-theme-lighter material-theme material-theme-palenight","\"scripts\": {\n  \"lint\": \"eslint src\",\n  \"lint:fix\": \"eslint src --fix\"\n}\n","json",[1552,2431,2432,2448,2470,2489],{"__ignoreMap":1550},[1555,2433,2434,2437,2440,2442,2445],{"class":1557,"line":1558},[1555,2435,2436],{"class":1973},"\"",[1555,2438,2439],{"class":1565},"scripts",[1555,2441,2436],{"class":1973},[1555,2443,2444],{"class":1966},": ",[1555,2446,2447],{"class":1973},"{\n",[1555,2449,2450,2453,2456,2458,2460,2463,2466,2468],{"class":1557,"line":1569},[1555,2451,2452],{"class":1973},"  \"",[1555,2454,2455],{"class":2313},"lint",[1555,2457,2436],{"class":1973},[1555,2459,2064],{"class":1973},[1555,2461,2462],{"class":1973}," \"",[1555,2464,2465],{"class":1565},"eslint src",[1555,2467,2436],{"class":1973},[1555,2469,2080],{"class":1973},[1555,2471,2472,2474,2477,2479,2481,2483,2486],{"class":1557,"line":1741},[1555,2473,2452],{"class":1973},[1555,2475,2476],{"class":2313},"lint:fix",[1555,2478,2436],{"class":1973},[1555,2480,2064],{"class":1973},[1555,2482,2462],{"class":1973},[1555,2484,2485],{"class":1565},"eslint src --fix",[1555,2487,2488],{"class":1973},"\"\n",[1555,2490,2491],{"class":1557,"line":1747},[1555,2492,2493],{"class":1973},"}\n",[1531,2495,2496],{},"以后只需运行：",[1545,2498,2500],{"className":1547,"code":2499,"language":1549,"meta":1550,"style":1550},"npm run lint\n",[1552,2501,2502],{"__ignoreMap":1550},[1555,2503,2504,2506,2509],{"class":1557,"line":1558},[1555,2505,1572],{"class":1561},[1555,2507,2508],{"class":1565}," run",[1555,2510,2511],{"class":1565}," lint\n",[1531,2513,2514],{},"或",[1545,2516,2518],{"className":1547,"code":2517,"language":1549,"meta":1550,"style":1550},"npm run lint:fix\n",[1552,2519,2520],{"__ignoreMap":1550},[1555,2521,2522,2524,2526],{"class":1557,"line":1558},[1555,2523,1572],{"class":1561},[1555,2525,2508],{"class":1565},[1555,2527,2528],{"class":1565}," lint:fix\n",[1531,2530,2531],{},"即可完成相应操作。",[1535,2533],{},[1526,2535,2537],{"id":2536},"编辑器集成-eslint","🔌 编辑器集成 ESLint",[1531,2539,2540],{},"为在编码时实时发现潜在问题，建议为所使用的编辑器安装 ESLint 插件。",[1531,2542,2543],{},"以 Cursor 为例，安装 “ESLint” 插件后，编辑器将在编码过程中自动检查代码，并在保存文件时进一步提示错误，帮助你及时修正问题、保持代码规范。",[1535,2545],{},[1526,2547,2549],{"id":2548},"小节总结","🧾 小节总结",[2551,2552,2553,2556,2559,2566],"ul",{},[1719,2554,2555],{},"ESLint 是前端代码质量利器，能帮助自动检查 JavaScript 代码。",[1719,2557,2558],{},"安装 ESLint 需要先有 Node.js 环境，然后用 npm 安装。",[1719,2560,2561,2562,2565],{},"通过 ",[1552,2563,2564],{},"eslint --init"," 可以快速生成配置，方便定制规则。",[1719,2567,2568],{},"可以命令行运行，也能集成于编辑器里，提升开发体验。",[1535,2570],{},[1526,2572,2574],{"id":2573},"知识问答qa","❓ 知识问答（Q&A）",[1531,2576,2577,2578,2580],{},"Q： ESLint 安装后，为什么要运行 ",[1552,2579,2564],{},"？",[1531,2582,2583,2584,2587],{},"A： 这是用来生成配置文件 ",[1552,2585,2586],{},".eslintrc","，告诉 ESLint 你想用什么规则和环境。",[1531,2589,2590,2591,2593],{},"Q： 什么场景下用 ESLint 的 ",[1552,2592,2385],{}," 参数？",[1531,2595,2596],{},"A： 当你想自动修正代码格式和部分简单问题时使用，可以节省手动修改时间。",[1535,2598],{},[1526,2600,2602],{"id":2601},"小练习","🧪 小练习",[1531,2604,2605],{},"请在下面模板基础上，完成 ESLint 的安装、初始化和运行，体验检测效果。",[1545,2607,2609],{"className":1547,"code":2608,"language":1549,"meta":1550,"style":1550},"mkdir demo-eslint\ncd demo-eslint\nnpm init -y\nnpm install eslint --save-dev\nnpx eslint --init\n",[1552,2610,2611,2618,2624,2632,2642],{"__ignoreMap":1550},[1555,2612,2613,2615],{"class":1557,"line":1558},[1555,2614,1618],{"class":1561},[1555,2616,2617],{"class":1565}," demo-eslint\n",[1555,2619,2620,2622],{"class":1557,"line":1569},[1555,2621,1627],{"class":1626},[1555,2623,2617],{"class":1565},[1555,2625,2626,2628,2630],{"class":1557,"line":1741},[1555,2627,1572],{"class":1561},[1555,2629,1645],{"class":1565},[1555,2631,1648],{"class":1565},[1555,2633,2634,2636,2638,2640],{"class":1557,"line":1747},[1555,2635,1572],{"class":1561},[1555,2637,1672],{"class":1565},[1555,2639,1675],{"class":1565},[1555,2641,1678],{"class":1565},[1555,2643,2644,2646,2648],{"class":1557,"line":1753},[1555,2645,1706],{"class":1561},[1555,2647,1675],{"class":1565},[1555,2649,1711],{"class":1565},[1531,2651,2652,2653,2656],{},"然后创建 ",[1552,2654,2655],{},"src/test.js"," 文件，写入：",[1545,2658,2662],{"className":2659,"code":2660,"language":2661,"meta":1550,"style":1550},"language-md shiki shiki-themes material-theme-lighter material-theme material-theme-palenight","let a = 10\nconsole.log(a)\n","md",[1552,2663,2664,2669],{"__ignoreMap":1550},[1555,2665,2666],{"class":1557,"line":1558},[1555,2667,2668],{"class":1966},"let a = 10\n",[1555,2670,2671],{"class":1557,"line":1569},[1555,2672,2673],{"class":1966},"console.log(a)\n",[1531,2675,2676,2677,2679],{},"运行 ESLint，观察是否有缺失分号的警告，尝试用 ",[1552,2678,2385],{}," 自动修复。",[1535,2681],{},[1531,2683,2684],{},"🎉 恭喜你已经掌握 ESLint 安装、初始化和运行技能啦！现在你可以开始用 ESLint 帮助你写出更规范和更健康的 JavaScript 代码了。",[2686,2687,2688],"style",{},"html pre.shiki code .sYGMc, html code.shiki .sYGMc{--shiki-light:#E2931D;--shiki-default:#FFCB6B;--shiki-dark:#FFCB6B}html pre.shiki code .sIEYB, html code.shiki .sIEYB{--shiki-light:#91B859;--shiki-default:#C3E88D;--shiki-dark:#C3E88D}html .light .shiki span {color: var(--shiki-light);background: var(--shiki-light-bg);font-style: var(--shiki-light-font-style);font-weight: var(--shiki-light-font-weight);text-decoration: var(--shiki-light-text-decoration);}html.light .shiki span {color: var(--shiki-light);background: var(--shiki-light-bg);font-style: var(--shiki-light-font-style);font-weight: var(--shiki-light-font-weight);text-decoration: var(--shiki-light-text-decoration);}html .default .shiki span {color: var(--shiki-default);background: var(--shiki-default-bg);font-style: var(--shiki-default-font-style);font-weight: var(--shiki-default-font-weight);text-decoration: var(--shiki-default-text-decoration);}html .shiki span {color: var(--shiki-default);background: var(--shiki-default-bg);font-style: var(--shiki-default-font-style);font-weight: var(--shiki-default-font-weight);text-decoration: var(--shiki-default-text-decoration);}html .dark .shiki span {color: var(--shiki-dark);background: var(--shiki-dark-bg);font-style: var(--shiki-dark-font-style);font-weight: var(--shiki-dark-font-weight);text-decoration: var(--shiki-dark-text-decoration);}html.dark .shiki span {color: var(--shiki-dark);background: var(--shiki-dark-bg);font-style: var(--shiki-dark-font-style);font-weight: var(--shiki-dark-font-weight);text-decoration: var(--shiki-dark-text-decoration);}html pre.shiki code .swgpB, html code.shiki .swgpB{--shiki-light:#6182B8;--shiki-default:#82AAFF;--shiki-dark:#82AAFF}html pre.shiki code .syuKq, html code.shiki .syuKq{--shiki-light:#90A4AE;--shiki-light-font-style:italic;--shiki-default:#546E7A;--shiki-default-font-style:italic;--shiki-dark:#676E95;--shiki-dark-font-style:italic}html pre.shiki code .s8pZq, html code.shiki .s8pZq{--shiki-light:#39ADB5;--shiki-light-font-style:italic;--shiki-default:#89DDFF;--shiki-default-font-style:italic;--shiki-dark:#89DDFF;--shiki-dark-font-style:italic}html pre.shiki code .sndM8, html code.shiki .sndM8{--shiki-light:#90A4AE;--shiki-default:#EEFFFF;--shiki-dark:#BABED8}html pre.shiki code .s86vT, html code.shiki .s86vT{--shiki-light:#39ADB5;--shiki-default:#89DDFF;--shiki-dark:#89DDFF}html pre.shiki code .sd2Uz, html code.shiki .sd2Uz{--shiki-light:#E53935;--shiki-default:#F07178;--shiki-dark:#F07178}html pre.shiki code .s50WR, html code.shiki .s50WR{--shiki-light:#9C3EDA;--shiki-default:#C792EA;--shiki-dark:#C792EA}",{"title":1550,"searchDepth":1569,"depth":1569,"links":2690},[2691,2692,2693,2700,2706,2707,2708,2709],{"id":1528,"depth":1569,"text":1529},{"id":1539,"depth":1569,"text":1540},{"id":1599,"depth":1569,"text":1600,"children":2694},[2695,2696,2697,2698,2699],{"id":1604,"depth":1741,"text":1605},{"id":1632,"depth":1741,"text":1633},{"id":1656,"depth":1741,"text":1657},{"id":1692,"depth":1741,"text":1693},{"id":1938,"depth":1741,"text":1939},{"id":2258,"depth":1569,"text":2259,"children":2701},[2702,2703,2704,2705],{"id":2262,"depth":1741,"text":2263},{"id":2295,"depth":1741,"text":2296},{"id":2378,"depth":1741,"text":2379},{"id":2416,"depth":1741,"text":2417},{"id":2536,"depth":1569,"text":2537},{"id":2548,"depth":1569,"text":2549},{"id":2573,"depth":1569,"text":2574},{"id":2601,"depth":1569,"text":2602},"本文详细介绍如何安装和运行 ESLint，帮助你快速掌握代码规范检测工具。",null,{},{"title":459},{"title":1521,"description":2710},"cRbtnMty2D",[2717,2719],{"title":457,"path":453,"stem":454,"description":2718,"children":-1},"本文深入浅出介绍 ESLint 的作用、解决的问题、团队代码风格统一的重要性，以及 ESLint 与 Prettier 的区别和如何利用 ESLint 预防常见 Bug。",{"title":463,"path":464,"stem":465,"description":2720,"children":-1},"详细讲解 ESLint  版本中常用规则与配置推荐，帮助前端初学者理解和应用 ESLint。",1784715109096]