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--save-dev\n",[1531,1640,1641],{},"下面逐个来看它们的用法。",[1535,1643],{},[1526,1645,1647],{"id":1646},"node-resolve解析第三方依赖","🧰 node-resolve：解析第三方依赖",[1531,1649,1650,1651,1654],{},"先看一个容易让人困惑的问题：明明已经 ",[1559,1652,1653],{},"npm install lodash-es"," 了，为什么 Rollup 还是“找不到”它？",[1531,1656,1657,1658,1670],{},"关键在于：",[1545,1659,1660,1663,1664,1666,1667,1669],{},[1559,1661,1662],{},"npm install"," 只负责把文件下载到 ",[1559,1665,1565],{}," 目录，而 Rollup 核心并不认识 ",[1559,1668,1565],{}," 的查找规则","。你的代码里其实有两种 import，走的是两套完全不同的规则：",[1603,1672,1676],{"className":1673,"code":1674,"language":1675,"meta":1608,"style":1608},"language-js shiki shiki-themes material-theme-lighter material-theme material-theme-palenight","// ① 相对路径：Rollup 核心认识，从当前文件出发直接就能找到\nimport { add } from './math.js';\n\n// ② 裸导入（bare specifier）：只是一个包名，没有路径信息，Rollup 核心不认识\nimport { debounce } from 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核心不认识\n",[1612,1731,1733,1735,1737,1740,1742,1744,1746,1749,1751],{"class":1614,"line":1732},5,[1612,1734,1690],{"class":1689},[1612,1736,1694],{"class":1693},[1612,1738,1739],{"class":1697}," debounce",[1612,1741,1701],{"class":1693},[1612,1743,1704],{"class":1689},[1612,1745,1707],{"class":1693},[1612,1747,1748],{"class":1622},"lodash-es",[1612,1750,1713],{"class":1693},[1612,1752,1716],{"class":1693},[1531,1754,1755],{},"第②种写法要找到真正的文件，需要一套专门的查找算法：",[1757,1758,1759,1768,1786],"ol",{},[1556,1760,1761,1762,1764,1765,1767],{},"到 ",[1559,1763,1565],{}," 里定位 ",[1559,1766,1748],{}," 目录；",[1556,1769,1770,1771,1774,1775,1778,1779,1778,1782,1785],{},"读取它的 ",[1559,1772,1773],{},"package.json","，根据 ",[1559,1776,1777],{},"main"," / ",[1559,1780,1781],{},"module",[1559,1783,1784],{},"exports"," 字段判断入口文件是哪个（包里有几百个文件，到底加载哪一个？）；",[1556,1787,1788,1789,1548],{},"最终定位到具体文件，例如 ",[1559,1790,1791],{},"node_modules/lodash-es/lodash.js",[1531,1793,1794,1795,1798,1799,1802,1803,1806],{},"这套规则叫 ",[1545,1796,1797],{},"Node.js 模块解析算法","，Node.js 运行时内置了它，但 ",[1545,1800,1801],{},"Rollup 核心刻意没有内置","——保持核心精简，也因为 Rollup 的设计初衷是打包库，默认假定依赖是外部提供的。",[1545,1804,1805],{},"node-resolve 插件的作用，就是把这套查找算法补进 Rollup","：",[1603,1808,1811],{"className":1673,"code":1809,"filename":1810,"language":1675,"meta":1608,"style":1608},"import resolve from '@rollup/plugin-node-resolve';\n\nexport default {\n    input: 'src/index.js',\n    output: {\n        file: 'dist/bundle.js',\n        format: 'es'\n    },\n    plugins: [resolve()]\n};\n","rollup.config.mjs",[1559,1812,1813,1832,1836,1847,1866,1875,1892,1908,1914,1932],{"__ignoreMap":1608},[1612,1814,1815,1817,1820,1823,1825,1828,1830],{"class":1614,"line":1615},[1612,1816,1690],{"class":1689},[1612,1818,1819],{"class":1697}," resolve ",[1612,1821,1822],{"class":1689},"from",[1612,1824,1707],{"class":1693},[1612,1826,1827],{"class":1622},"@rollup/plugin-node-resolve",[1612,1829,1713],{"class":1693},[1612,1831,1716],{"class":1693},[1612,1833,1834],{"class":1614,"line":1686},[1612,1835,1723],{"emptyLinePlaceholder":1722},[1612,1837,1838,1841,1844],{"class":1614,"line":1719},[1612,1839,1840],{"class":1689},"export",[1612,1842,1843],{"class":1689}," default",[1612,1845,1846],{"class":1693}," {\n",[1612,1848,1849,1853,1856,1858,1861,1863],{"class":1614,"line":1726},[1612,1850,1852],{"class":1851},"sd2Uz","    input",[1612,1854,1855],{"class":1693},":",[1612,1857,1707],{"class":1693},[1612,1859,1860],{"class":1622},"src/index.js",[1612,1862,1713],{"class":1693},[1612,1864,1865],{"class":1693},",\n",[1612,1867,1868,1871,1873],{"class":1614,"line":1732},[1612,1869,1870],{"class":1851},"    output",[1612,1872,1855],{"class":1693},[1612,1874,1846],{"class":1693},[1612,1876,1878,1881,1883,1885,1888,1890],{"class":1614,"line":1877},6,[1612,1879,1880],{"class":1851},"        file",[1612,1882,1855],{"class":1693},[1612,1884,1707],{"class":1693},[1612,1886,1887],{"class":1622},"dist/bundle.js",[1612,1889,1713],{"class":1693},[1612,1891,1865],{"class":1693},[1612,1893,1895,1898,1900,1902,1905],{"class":1614,"line":1894},7,[1612,1896,1897],{"class":1851},"        format",[1612,1899,1855],{"class":1693},[1612,1901,1707],{"class":1693},[1612,1903,1904],{"class":1622},"es",[1612,1906,1907],{"class":1693},"'\n",[1612,1909,1911],{"class":1614,"line":1910},8,[1612,1912,1913],{"class":1693},"    },\n",[1612,1915,1917,1920,1922,1925,1929],{"class":1614,"line":1916},9,[1612,1918,1919],{"class":1851},"    plugins",[1612,1921,1855],{"class":1693},[1612,1923,1924],{"class":1697}," [",[1612,1926,1928],{"class":1927},"swgpB","resolve",[1612,1930,1931],{"class":1697},"()]\n",[1612,1933,1935],{"class":1614,"line":1934},10,[1612,1936,1937],{"class":1693},"};\n",[1531,1939,1940,1941,1943],{},"加上它之后，",[1559,1942,1748],{}," 就会被正常打进产物里。",[1945,1946,1947],"warning",{},[1531,1948,1949,1950,1953,1954,1957,1958,1548],{},"不加插件时 Rollup 并不会直接报错，而是打印 ",[1559,1951,1952],{},"(!) Unresolved dependencies"," 警告，并把 ",[1559,1955,1956],{},"'lodash-es'"," 当作外部依赖原样保留在产物里。这样的产物在浏览器里运行会直接失败，因为浏览器同样不认识裸导入。所以只要引用了第三方包，记得加上 ",[1559,1959,1960],{},"resolve()",[1962,1963,1964],"tip",{},[1531,1965,1966],{},"你可能从没在 Webpack / Vite 里装过这类插件，因为它们把 node_modules 解析内置了。Rollup 选择把它做成插件，所以这一步需要你手动加上。",[1535,1968],{},[1526,1970,1972],{"id":1971},"commonjs转换-commonjs-模块","🧰 commonjs：转换 CommonJS 模块",[1531,1974,1975,1976,1979],{},"npm 上很多老牌包是用 CommonJS 写的（",[1559,1977,1978],{},"module.exports = ...","）。Rollup 只懂 ES 模块，遇到它们会报错。",[1531,1981,1982,1806],{},[1545,1983,1984],{},"commonjs 插件负责把 CommonJS 模块转换成 ES 模块",[1603,1986,1988],{"className":1673,"code":1987,"filename":1810,"language":1675,"meta":1608,"style":1608},"import resolve from '@rollup/plugin-node-resolve';\nimport commonjs from '@rollup/plugin-commonjs';\n\nexport default {\n    input: 'src/index.js',\n    output: {\n        file: 'dist/bundle.js',\n        format: 'es'\n    },\n    plugins: [resolve(), commonjs()]\n};\n",[1559,1989,1990,2006,2024,2028,2036,2050,2058,2072,2084,2088,2109],{"__ignoreMap":1608},[1612,1991,1992,1994,1996,1998,2000,2002,2004],{"class":1614,"line":1615},[1612,1993,1690],{"class":1689},[1612,1995,1819],{"class":1697},[1612,1997,1822],{"class":1689},[1612,1999,1707],{"class":1693},[1612,2001,1827],{"class":1622},[1612,2003,1713],{"class":1693},[1612,2005,1716],{"class":1693},[1612,2007,2008,2010,2013,2015,2017,2020,2022],{"class":1614,"line":1686},[1612,2009,1690],{"class":1689},[1612,2011,2012],{"class":1697}," commonjs ",[1612,2014,1822],{"class":1689},[1612,2016,1707],{"class":1693},[1612,2018,2019],{"class":1622},"@rollup/plugin-commonjs",[1612,2021,1713],{"class":1693},[1612,2023,1716],{"class":1693},[1612,2025,2026],{"class":1614,"line":1719},[1612,2027,1723],{"emptyLinePlaceholder":1722},[1612,2029,2030,2032,2034],{"class":1614,"line":1726},[1612,2031,1840],{"class":1689},[1612,2033,1843],{"class":1689},[1612,2035,1846],{"class":1693},[1612,2037,2038,2040,2042,2044,2046,2048],{"class":1614,"line":1732},[1612,2039,1852],{"class":1851},[1612,2041,1855],{"class":1693},[1612,2043,1707],{"class":1693},[1612,2045,1860],{"class":1622},[1612,2047,1713],{"class":1693},[1612,2049,1865],{"class":1693},[1612,2051,2052,2054,2056],{"class":1614,"line":1877},[1612,2053,1870],{"class":1851},[1612,2055,1855],{"class":1693},[1612,2057,1846],{"class":1693},[1612,2059,2060,2062,2064,2066,2068,2070],{"class":1614,"line":1894},[1612,2061,1880],{"class":1851},[1612,2063,1855],{"class":1693},[1612,2065,1707],{"class":1693},[1612,2067,1887],{"class":1622},[1612,2069,1713],{"class":1693},[1612,2071,1865],{"class":1693},[1612,2073,2074,2076,2078,2080,2082],{"class":1614,"line":1910},[1612,2075,1897],{"class":1851},[1612,2077,1855],{"class":1693},[1612,2079,1707],{"class":1693},[1612,2081,1904],{"class":1622},[1612,2083,1907],{"class":1693},[1612,2085,2086],{"class":1614,"line":1916},[1612,2087,1913],{"class":1693},[1612,2089,2090,2092,2094,2096,2098,2101,2104,2107],{"class":1614,"line":1934},[1612,2091,1919],{"class":1851},[1612,2093,1855],{"class":1693},[1612,2095,1924],{"class":1697},[1612,2097,1928],{"class":1927},[1612,2099,2100],{"class":1697},"()",[1612,2102,2103],{"class":1693},",",[1612,2105,2106],{"class":1927}," commonjs",[1612,2108,1931],{"class":1697},[1612,2110,2112],{"class":1614,"line":2111},11,[1612,2113,1937],{"class":1693},[1945,2115,2116],{},[1531,2117,2118,2121,2122,2124,2125,2128],{},[1559,2119,2120],{},"commonjs"," 必须写在 ",[1559,2123,1960],{}," ",[1545,2126,2127],{},"后面","。Rollup 按数组顺序执行插件，得先找到文件，才能转换它。顺序写反是新手最常踩的坑。",[1535,2130],{},[1526,2132,2134],{"id":2133},"json导入-json-文件","🧰 json：导入 JSON 文件",[1531,2136,2137,2138,2140],{},"想在代码里直接读取 JSON 文件（比如 ",[1559,2139,1773],{}," 里的版本号），就用 json 插件：",[1603,2142,2144],{"className":1673,"code":2143,"filename":1810,"language":1675,"meta":1608,"style":1608},"import json from '@rollup/plugin-json';\n\nexport default {\n    input: 'src/index.js',\n    output: {\n        file: 'dist/bundle.js',\n        format: 'es'\n    },\n    plugins: [json()]\n};\n",[1559,2145,2146,2164,2168,2176,2190,2198,2212,2224,2228,2241],{"__ignoreMap":1608},[1612,2147,2148,2150,2153,2155,2157,2160,2162],{"class":1614,"line":1615},[1612,2149,1690],{"class":1689},[1612,2151,2152],{"class":1697}," json ",[1612,2154,1822],{"class":1689},[1612,2156,1707],{"class":1693},[1612,2158,2159],{"class":1622},"@rollup/plugin-json",[1612,2161,1713],{"class":1693},[1612,2163,1716],{"class":1693},[1612,2165,2166],{"class":1614,"line":1686},[1612,2167,1723],{"emptyLinePlaceholder":1722},[1612,2169,2170,2172,2174],{"class":1614,"line":1719},[1612,2171,1840],{"class":1689},[1612,2173,1843],{"class":1689},[1612,2175,1846],{"class":1693},[1612,2177,2178,2180,2182,2184,2186,2188],{"class":1614,"line":1726},[1612,2179,1852],{"class":1851},[1612,2181,1855],{"class":1693},[1612,2183,1707],{"class":1693},[1612,2185,1860],{"class":1622},[1612,2187,1713],{"class":1693},[1612,2189,1865],{"class":1693},[1612,2191,2192,2194,2196],{"class":1614,"line":1732},[1612,2193,1870],{"class":1851},[1612,2195,1855],{"class":1693},[1612,2197,1846],{"class":1693},[1612,2199,2200,2202,2204,2206,2208,2210],{"class":1614,"line":1877},[1612,2201,1880],{"class":1851},[1612,2203,1855],{"class":1693},[1612,2205,1707],{"class":1693},[1612,2207,1887],{"class":1622},[1612,2209,1713],{"class":1693},[1612,2211,1865],{"class":1693},[1612,2213,2214,2216,2218,2220,2222],{"class":1614,"line":1894},[1612,2215,1897],{"class":1851},[1612,2217,1855],{"class":1693},[1612,2219,1707],{"class":1693},[1612,2221,1904],{"class":1622},[1612,2223,1907],{"class":1693},[1612,2225,2226],{"class":1614,"line":1910},[1612,2227,1913],{"class":1693},[1612,2229,2230,2232,2234,2236,2239],{"class":1614,"line":1916},[1612,2231,1919],{"class":1851},[1612,2233,1855],{"class":1693},[1612,2235,1924],{"class":1697},[1612,2237,2238],{"class":1927},"json",[1612,2240,1931],{"class":1697},[1612,2242,2243],{"class":1614,"line":1934},[1612,2244,1937],{"class":1693},[1531,2246,2247],{},"之后就可以像导入模块一样导入 JSON：",[1603,2249,2251],{"className":1673,"code":2250,"filename":1860,"language":1675,"meta":1608,"style":1608},"import pkg from '../package.json';\n\nexport function getVersion() {\n    return pkg.version;\n}\n",[1559,2252,2253,2271,2275,2290,2306],{"__ignoreMap":1608},[1612,2254,2255,2257,2260,2262,2264,2267,2269],{"class":1614,"line":1615},[1612,2256,1690],{"class":1689},[1612,2258,2259],{"class":1697}," pkg ",[1612,2261,1822],{"class":1689},[1612,2263,1707],{"class":1693},[1612,2265,2266],{"class":1622},"../package.json",[1612,2268,1713],{"class":1693},[1612,2270,1716],{"class":1693},[1612,2272,2273],{"class":1614,"line":1686},[1612,2274,1723],{"emptyLinePlaceholder":1722},[1612,2276,2277,2279,2283,2286,2288],{"class":1614,"line":1719},[1612,2278,1840],{"class":1689},[1612,2280,2282],{"class":2281},"s50WR"," function",[1612,2284,2285],{"class":1927}," getVersion",[1612,2287,2100],{"class":1693},[1612,2289,1846],{"class":1693},[1612,2291,2292,2295,2298,2301,2304],{"class":1614,"line":1726},[1612,2293,2294],{"class":1689},"    return",[1612,2296,2297],{"class":1697}," pkg",[1612,2299,2300],{"class":1693},".",[1612,2302,2303],{"class":1697},"version",[1612,2305,1716],{"class":1693},[1612,2307,2308],{"class":1614,"line":1732},[1612,2309,2310],{"class":1693},"}\n",[1531,2312,2313],{},"打包后 JSON 内容会变成普通的 JavaScript 对象，嵌进产物里。",[1962,2315,2316],{},[1531,2317,2318,2319,2321,2322,2324,2325,2327],{},"json 插件只会打包你用到的字段。比如整个 ",[1559,2320,1773],{}," 有几十个字段，但你只用了 ",[1559,2323,2303],{},"，产物里就只会包含 ",[1559,2326,2303],{},"，其余字段会被 Tree Shaking 移除。",[1535,2329],{},[1526,2331,2333],{"id":2332},"terser压缩代码","🧰 terser：压缩代码",[1531,2335,2336,2337,2344,2345,1806],{},"发布前通常要把代码压缩，去掉空格注释、缩短变量名。terser 插件就是干这个的，它的用法比较特殊——",[1545,2338,2339,2340,2343],{},"写在 ",[1559,2341,2342],{},"output.plugins"," 里","，而不是顶层的 ",[1559,2346,2347],{},"plugins",[1603,2349,2351],{"className":1673,"code":2350,"filename":1810,"language":1675,"meta":1608,"style":1608},"import terser from '@rollup/plugin-terser';\n\nexport default {\n    input: 'src/index.js',\n    output: [\n        {\n            file: 'dist/bundle.js',\n            format: 'es'\n        },\n        {\n            file: 'dist/bundle.min.js',\n            format: 'es',\n            plugins: [terser()]\n        }\n    ]\n};\n",[1559,2352,2353,2371,2375,2383,2397,2406,2411,2426,2439,2444,2448,2463,2478,2493,2499,2505],{"__ignoreMap":1608},[1612,2354,2355,2357,2360,2362,2364,2367,2369],{"class":1614,"line":1615},[1612,2356,1690],{"class":1689},[1612,2358,2359],{"class":1697}," terser ",[1612,2361,1822],{"class":1689},[1612,2363,1707],{"class":1693},[1612,2365,2366],{"class":1622},"@rollup/plugin-terser",[1612,2368,1713],{"class":1693},[1612,2370,1716],{"class":1693},[1612,2372,2373],{"class":1614,"line":1686},[1612,2374,1723],{"emptyLinePlaceholder":1722},[1612,2376,2377,2379,2381],{"class":1614,"line":1719},[1612,2378,1840],{"class":1689},[1612,2380,1843],{"class":1689},[1612,2382,1846],{"class":1693},[1612,2384,2385,2387,2389,2391,2393,2395],{"class":1614,"line":1726},[1612,2386,1852],{"class":1851},[1612,2388,1855],{"class":1693},[1612,2390,1707],{"class":1693},[1612,2392,1860],{"class":1622},[1612,2394,1713],{"class":1693},[1612,2396,1865],{"class":1693},[1612,2398,2399,2401,2403],{"class":1614,"line":1732},[1612,2400,1870],{"class":1851},[1612,2402,1855],{"class":1693},[1612,2404,2405],{"class":1697}," [\n",[1612,2407,2408],{"class":1614,"line":1877},[1612,2409,2410],{"class":1693},"        {\n",[1612,2412,2413,2416,2418,2420,2422,2424],{"class":1614,"line":1894},[1612,2414,2415],{"class":1851},"            file",[1612,2417,1855],{"class":1693},[1612,2419,1707],{"class":1693},[1612,2421,1887],{"class":1622},[1612,2423,1713],{"class":1693},[1612,2425,1865],{"class":1693},[1612,2427,2428,2431,2433,2435,2437],{"class":1614,"line":1910},[1612,2429,2430],{"class":1851},"            format",[1612,2432,1855],{"class":1693},[1612,2434,1707],{"class":1693},[1612,2436,1904],{"class":1622},[1612,2438,1907],{"class":1693},[1612,2440,2441],{"class":1614,"line":1916},[1612,2442,2443],{"class":1693},"        },\n",[1612,2445,2446],{"class":1614,"line":1934},[1612,2447,2410],{"class":1693},[1612,2449,2450,2452,2454,2456,2459,2461],{"class":1614,"line":2111},[1612,2451,2415],{"class":1851},[1612,2453,1855],{"class":1693},[1612,2455,1707],{"class":1693},[1612,2457,2458],{"class":1622},"dist/bundle.min.js",[1612,2460,1713],{"class":1693},[1612,2462,1865],{"class":1693},[1612,2464,2466,2468,2470,2472,2474,2476],{"class":1614,"line":2465},12,[1612,2467,2430],{"class":1851},[1612,2469,1855],{"class":1693},[1612,2471,1707],{"class":1693},[1612,2473,1904],{"class":1622},[1612,2475,1713],{"class":1693},[1612,2477,1865],{"class":1693},[1612,2479,2481,2484,2486,2488,2491],{"class":1614,"line":2480},13,[1612,2482,2483],{"class":1851},"            plugins",[1612,2485,1855],{"class":1693},[1612,2487,1924],{"class":1697},[1612,2489,2490],{"class":1927},"terser",[1612,2492,1931],{"class":1697},[1612,2494,2496],{"class":1614,"line":2495},14,[1612,2497,2498],{"class":1693},"        }\n",[1612,2500,2502],{"class":1614,"line":2501},15,[1612,2503,2504],{"class":1697},"    ]\n",[1612,2506,2508],{"class":1614,"line":2507},16,[1612,2509,1937],{"class":1693},[1531,2511,2512],{},"这样配置后会同时得到两份产物：一份正常代码（方便调试），一份压缩代码（发布给用户）。",[1531,2514,2515],{},"压缩前后的对比非常明显：",[1603,2517,2519],{"className":1673,"code":2518,"filename":1887,"language":1675,"meta":1608,"style":1608},"function add(a, b) {\n    return a + b;\n}\n\nexport { add };\n",[1559,2520,2521,2545,2559,2563,2567],{"__ignoreMap":1608},[1612,2522,2523,2526,2528,2531,2535,2537,2540,2543],{"class":1614,"line":1615},[1612,2524,2525],{"class":2281},"function",[1612,2527,1698],{"class":1927},[1612,2529,2530],{"class":1693},"(",[1612,2532,2534],{"class":2533},"sK9QF","a",[1612,2536,2103],{"class":1693},[1612,2538,2539],{"class":2533}," b",[1612,2541,2542],{"class":1693},")",[1612,2544,1846],{"class":1693},[1612,2546,2547,2549,2552,2555,2557],{"class":1614,"line":1686},[1612,2548,2294],{"class":1689},[1612,2550,2551],{"class":1697}," a",[1612,2553,2554],{"class":1693}," +",[1612,2556,2539],{"class":1697},[1612,2558,1716],{"class":1693},[1612,2560,2561],{"class":1614,"line":1719},[1612,2562,2310],{"class":1693},[1612,2564,2565],{"class":1614,"line":1726},[1612,2566,1723],{"emptyLinePlaceholder":1722},[1612,2568,2569,2571,2573,2575],{"class":1614,"line":1732},[1612,2570,1840],{"class":1689},[1612,2572,1694],{"class":1693},[1612,2574,1698],{"class":1697},[1612,2576,2577],{"class":1693}," };\n",[1603,2579,2581],{"className":1673,"code":2580,"filename":2458,"language":1675,"meta":1608,"style":1608},"function n(n,t){return n+t}export{n as add};\n",[1559,2582,2583],{"__ignoreMap":1608},[1612,2584,2585,2587,2590,2592,2595,2597,2600,2603,2606,2608,2611,2613,2616,2618,2621,2623,2626,2628],{"class":1614,"line":1615},[1612,2586,2525],{"class":2281},[1612,2588,2589],{"class":1927}," n",[1612,2591,2530],{"class":1693},[1612,2593,2594],{"class":2533},"n",[1612,2596,2103],{"class":1693},[1612,2598,2599],{"class":2533},"t",[1612,2601,2602],{"class":1693},"){",[1612,2604,2605],{"class":1689},"return",[1612,2607,2589],{"class":1697},[1612,2609,2610],{"class":1693},"+",[1612,2612,2599],{"class":1697},[1612,2614,2615],{"class":1693},"}",[1612,2617,1840],{"class":1689},[1612,2619,2620],{"class":1693},"{",[1612,2622,2594],{"class":1697},[1612,2624,2625],{"class":1689}," as",[1612,2627,1698],{"class":1697},[1612,2629,1937],{"class":1693},[1962,2631,2632],{},[1531,2633,2634,2635,2637,2638,2640],{},"为什么 terser 要写在 ",[1559,2636,2342],{},"？因为压缩发生在“产物生成之后”，属于输出阶段的操作。写在顶层 ",[1559,2639,2347],{}," 里虽然也能生效，但写在 output 里可以精确控制只压缩某一份产物。",[1535,2642],{},[1526,2644,2646],{"id":2645},"小节总结","🧾 小节总结",[1553,2648,2649,2654,2669,2677],{},[1556,2650,2651,2652,1594],{},"Rollup 核心只认 ES 模块，其余能力靠插件扩展，官方插件以 ",[1559,2653,1593],{},[1556,2655,2656,2659,2660,2662,2663,2665,2666,2668],{},[1559,2657,2658],{},"node-resolve"," 解析 ",[1559,2661,1565],{}," 依赖，",[1559,2664,2120],{}," 转换 CommonJS 模块，二者通常搭配使用且 ",[1559,2667,1928],{}," 在前。",[1556,2670,2671,2673,2674,2676],{},[1559,2672,2238],{}," 插件支持直接 ",[1559,2675,1690],{}," JSON 文件，未用到的字段会被摇掉。",[1556,2678,2679,2681,2682,2684],{},[1559,2680,2490],{}," 用于压缩代码，推荐写在 ",[1559,2683,2342],{}," 中，按产物分别控制。",[1535,2686],{},[1526,2688,2690],{"id":2689},"知识问答","❓ 知识问答",[1531,2692,2693],{},[1545,2694,2695,2696,2698],{},"Q1：我已经 ",[1559,2697,1662],{}," 了，为什么打包时提示 Unresolved dependencies？",[1531,2700,2701,2702,2704,2705,2707,2708,2710,2711,2713],{},"A：安装只是把文件放进了 ",[1559,2703,1565],{},"，但 Rollup 核心不认识裸导入的查找规则，需要 ",[1559,2706,2658],{}," 插件来补这套算法。找到警告后，在 ",[1559,2709,2347],{}," 里加上 ",[1559,2712,1960],{}," 即可。",[1531,2715,2716],{},[1545,2717,2718,2719,2721],{},"Q2：所有第三方包都需要 ",[1559,2720,2120],{}," 插件吗？",[1531,2723,2724,2725,2727,2728,2730,2731,1548],{},"A：不是。现在越来越多的包直接提供 ES 模块版本（如 ",[1559,2726,1748],{},"），这种只需要 ",[1559,2729,2658],{},"。只有引用纯 CommonJS 的老包时才需要 ",[1559,2732,2120],{},[1531,2734,2735],{},[1545,2736,2737],{},"Q3：插件的执行顺序一定是从左到右吗？",[1531,2739,2740,2741,2743,2744,1548],{},"A：是的。",[1559,2742,2347],{}," 数组决定了执行顺序，记住口诀：",[1545,2745,2746],{},"先找到（resolve）、再转换（commonjs）、其他插件随后",[1531,2748,2749],{},[1545,2750,2751],{},"Q4：压缩后的代码出错了好调试吗？",[1531,2753,2754,2755,2758,2759,2762],{},"A：直接调试很困难，因为变量名都被缩短了。这就是上一篇讲的 ",[1559,2756,2757],{},"sourcemap"," 的用武之地，配合 ",[1559,2760,2761],{},".map"," 文件就能映射回源码。",[1531,2764,2765],{},[1545,2766,2767],{},"Q5：Rollup 有没有处理 CSS、图片的插件？",[1531,2769,2770,2771,2774,2775,2778],{},"A：有，社区提供了 ",[1559,2772,2773],{},"rollup-plugin-postcss","、",[1559,2776,2777],{},"@rollup/plugin-image"," 等插件。但写 JavaScript 库时很少用到，了解即可。",[1535,2780],{},[1526,2782,2784],{"id":2783},"小练习","🧪 小练习",[1531,2786,2787,2788,2791],{},"给 ",[1559,2789,2790],{},"rollup-demo"," 加上插件支持：",[1757,2793,2794,2797,2810],{},[1556,2795,2796],{},"安装本篇文章提到的四个插件（版本见文章开头的安装命令）。",[1556,2798,2799,2800,2802,2803,2805,2806,2809],{},"在 ",[1559,2801,1860],{}," 中导入 ",[1559,2804,2266],{}," 并导出一个 ",[1559,2807,2808],{},"getName"," 函数返回包名。",[1556,2811,2812,2813,2815,2816,2819],{},"配置 ",[1559,2814,1810],{},"，输出一份正常文件和一份 ",[1559,2817,2818],{},".min.js"," 压缩文件。",[1603,2821,2823],{"className":1673,"code":2822,"filename":1810,"language":1675,"meta":1608,"style":1608},"import json from '@rollup/plugin-json';\nimport terser from '@rollup/plugin-terser';\n\nexport default {\n    input: 'src/index.js',\n    output: [\n        {\n            file: 'dist/bundle.js',\n            format: 'es'\n        }\n        // 请在这里补充 bundle.min.js 压缩产物\n    ],\n    plugins: [json()]\n};\n",[1559,2824,2825,2841,2857,2861,2869,2883,2891,2895,2909,2921,2925,2930,2937,2949],{"__ignoreMap":1608},[1612,2826,2827,2829,2831,2833,2835,2837,2839],{"class":1614,"line":1615},[1612,2828,1690],{"class":1689},[1612,2830,2152],{"class":1697},[1612,2832,1822],{"class":1689},[1612,2834,1707],{"class":1693},[1612,2836,2159],{"class":1622},[1612,2838,1713],{"class":1693},[1612,2840,1716],{"class":1693},[1612,2842,2843,2845,2847,2849,2851,2853,2855],{"class":1614,"line":1686},[1612,2844,1690],{"class":1689},[1612,2846,2359],{"class":1697},[1612,2848,1822],{"class":1689},[1612,2850,1707],{"class":1693},[1612,2852,2366],{"class":1622},[1612,2854,1713],{"class":1693},[1612,2856,1716],{"class":1693},[1612,2858,2859],{"class":1614,"line":1719},[1612,2860,1723],{"emptyLinePlaceholder":1722},[1612,2862,2863,2865,2867],{"class":1614,"line":1726},[1612,2864,1840],{"class":1689},[1612,2866,1843],{"class":1689},[1612,2868,1846],{"class":1693},[1612,2870,2871,2873,2875,2877,2879,2881],{"class":1614,"line":1732},[1612,2872,1852],{"class":1851},[1612,2874,1855],{"class":1693},[1612,2876,1707],{"class":1693},[1612,2878,1860],{"class":1622},[1612,2880,1713],{"class":1693},[1612,2882,1865],{"class":1693},[1612,2884,2885,2887,2889],{"class":1614,"line":1877},[1612,2886,1870],{"class":1851},[1612,2888,1855],{"class":1693},[1612,2890,2405],{"class":1697},[1612,2892,2893],{"class":1614,"line":1894},[1612,2894,2410],{"class":1693},[1612,2896,2897,2899,2901,2903,2905,2907],{"class":1614,"line":1910},[1612,2898,2415],{"class":1851},[1612,2900,1855],{"class":1693},[1612,2902,1707],{"class":1693},[1612,2904,1887],{"class":1622},[1612,2906,1713],{"class":1693},[1612,2908,1865],{"class":1693},[1612,2910,2911,2913,2915,2917,2919],{"class":1614,"line":1916},[1612,2912,2430],{"class":1851},[1612,2914,1855],{"class":1693},[1612,2916,1707],{"class":1693},[1612,2918,1904],{"class":1622},[1612,2920,1907],{"class":1693},[1612,2922,2923],{"class":1614,"line":1934},[1612,2924,2498],{"class":1693},[1612,2926,2927],{"class":1614,"line":2111},[1612,2928,2929],{"class":1682},"        // 请在这里补充 bundle.min.js 压缩产物\n",[1612,2931,2932,2935],{"class":1614,"line":2465},[1612,2933,2934],{"class":1697},"    ]",[1612,2936,1865],{"class":1693},[1612,2938,2939,2941,2943,2945,2947],{"class":1614,"line":2480},[1612,2940,1919],{"class":1851},[1612,2942,1855],{"class":1693},[1612,2944,1924],{"class":1697},[1612,2946,2238],{"class":1927},[1612,2948,1931],{"class":1697},[1612,2950,2951],{"class":1614,"line":2495},[1612,2952,1937],{"class":1693},[1535,2954],{},[1531,2956,2957],{},"🎉 恭喜你已经掌握了 Rollup 的常用插件！下一篇我们会深入 Rollup 的招牌能力——Tree Shaking。",[2959,2960,2961],"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 .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 .s86vT, html code.shiki .s86vT{--shiki-light:#39ADB5;--shiki-default:#89DDFF;--shiki-dark:#89DDFF}html pre.shiki code .sndM8, html code.shiki .sndM8{--shiki-light:#90A4AE;--shiki-default:#EEFFFF;--shiki-dark:#BABED8}html pre.shiki code .sd2Uz, html code.shiki .sd2Uz{--shiki-light:#E53935;--shiki-default:#F07178;--shiki-dark:#F07178}html pre.shiki code .swgpB, html code.shiki .swgpB{--shiki-light:#6182B8;--shiki-default:#82AAFF;--shiki-dark:#82AAFF}html pre.shiki code .s50WR, html code.shiki .s50WR{--shiki-light:#9C3EDA;--shiki-default:#C792EA;--shiki-dark:#C792EA}html pre.shiki code .sK9QF, html code.shiki .sK9QF{--shiki-light:#90A4AE;--shiki-light-font-style:italic;--shiki-default:#EEFFFF;--shiki-default-font-style:italic;--shiki-dark:#BABED8;--shiki-dark-font-style:italic}",{"title":1608,"searchDepth":1686,"depth":1686,"links":2963},[2964,2965,2966,2967,2968,2969,2970,2971,2972],{"id":1528,"depth":1686,"text":1529},{"id":1539,"depth":1686,"text":1540},{"id":1646,"depth":1686,"text":1647},{"id":1971,"depth":1686,"text":1972},{"id":2133,"depth":1686,"text":2134},{"id":2332,"depth":1686,"text":2333},{"id":2645,"depth":1686,"text":2646},{"id":2689,"depth":1686,"text":2690},{"id":2783,"depth":1686,"text":2784},"掌握 Rollup 最常用的四个插件：node-resolve、commonjs、json 和 terser，理解插件的执行顺序。","md",null,{},{"title":747},{"title":1521,"description":2973},"sKZ0ZB2dcv",[2981,2983],{"title":915,"path":916,"stem":917,"description":2982,"children":-1},"理解 Rollup 的四种输出格式及其适用场景，学会一次打包输出多种格式。",{"title":922,"path":923,"stem":924,"description":2984,"children":-1},"理解 Tree Shaking 的原理，明白为什么它依赖 ES 模块，学会写出容易被摇掉无用代码的库。",1784715111126]