package-lock.json#
package-lock.json 文件是由 npm 自动生成的一个文件，它在安装包的过程中被创建。这个文件的主要目的是锁定安装时的包的版本，以确保在不同的环境中能够安装相同版本的依赖，从而使项目更加稳定和一致。
package-lock.json 与 npm 的缓存机制是有关联的。当 package-lock.json 文件存在时，npm安装依赖的过程会更快，部分原因在于 npm 可以利用本地缓存。npm会将下载的包存储在本地的缓存中，当再次安装相同版本的包时，npm可以直接从缓存中获取，而不是重新从远程仓库下载，因此加快了安装速度。
package-lock.json文件的作用：
-
确保团队成员和部署环境中的依赖项版本一致
-
提供一个完整的依赖树信息，包括每个包的精确版本和来源
-
间接地加快了依赖安装的速度，因为 npm 可以利用该文件中的信息来使用本地缓存中的包，避免不必要的网络请求。
- version：安装的依赖包的具体版本号
- resolved：一个完整的URL，指定了当前包的下载地址
- integrity：一个字符串，通常是一个
SHA-512校验和，用于验证包的完整性。当从缓存中获取包时，npm会使用这个校验和来确保包的数据没有被篡改。 - dev：指定了当前包是否为开发依赖包
- bin：指定了当前包中可执行文件的路径和名称
- engines：指定了当前包所依赖的Node.js版本范围
package-lock.json 的缓存
通过
name + version + integrity信息生成一个唯一的key，这个key能找到对应的 index-v5 下的缓存记录，这个目录记录了 content-v2的索引的一个位置，如果能对上就去content-v2中找到缓存的文件，找到则放到node_modules下1# 执行 npm config list -l 命令查看npm cache的目录地址 2npm config list -l
1{
2 "name": "xiaosu",
3 "version": "1.0.0",
4 "lockfileVersion": 3,
5 "requires": true,
6 "packages": {
7 "node_modules/@babel/parser": {
8 "version": "7.24.7",
9 "resolved": "https://registry.npmjs.org/@babel/parser/-/parser-7.24.7.tgz",
10 "integrity": "sha512-9uUYRm6OqQrCqQdG1iCBwBPZgN8ciDBro2nIOFaiRz1/BCxaI7CNvQbDHvsArAC7Tw9Hda/B3U+6ui9u4HWXPw==",
11 "dev": true,
12 "bin": {
13 "parser": "bin/babel-parser.js"
14 },
15 "engines": {
16 "node": ">=6.0.0"
17 }
18 },
19 "node_modules/@jridgewell/sourcemap-codec": {
20 "version": "1.4.15",
21 "resolved": "https://registry.npmjs.org/@jridgewell/sourcemap-codec/-/sourcemap-codec-1.4.15.tgz",
22 "integrity": "sha512-eF2rxCRulEKXHTRiDrDy6erMYWqNw4LPdQ8UQA4huuxaQsVeRPFl2oM8oDGxMFhJUWZf9McpLtJasDDZb/Bpeg==",
23 "dev": true
24 },
25 "node_modules/@vue/compiler-core": {
26 "version": "3.4.27",
27 "resolved": "https://registry.npmjs.org/@vue/compiler-core/-/compiler-core-3.4.27.tgz",
28 "integrity": "sha512-E+RyqY24KnyDXsCuQrI+mlcdW3ALND6U7Gqa/+bVwbcpcR3BRRIckFoz7Qyd4TTlnugtwuI7YgjbvsLmxb+yvg==",
29 "dev": true,
30 "dependencies": {
31 "@babel/parser": "^7.24.4",
32 "@vue/shared": "3.4.27",
33 "entities": "^4.5.0",
34 "estree-walker": "^2.0.2",
35 "source-map-js": "^1.2.0"
36 }
37 },
38 "node_modules/@vue/compiler-dom": {
39 "version": "3.4.27",
40 "resolved": "https://registry.npmjs.org/@vue/compiler-dom/-/compiler-dom-3.4.27.tgz",
41 "integrity": "sha512-kUTvochG/oVgE1w5ViSr3KUBh9X7CWirebA3bezTbB5ZKBQZwR2Mwj9uoSKRMFcz4gSMzzLXBPD6KpCLb9nvWw==",
42 "dev": true,
43 "dependencies": {
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45 "@vue/shared": "3.4.27"
46 }
47 },
48 "node_modules/@vue/compiler-sfc": {
49 "version": "3.4.27",
50 "resolved": "https://registry.npmjs.org/@vue/compiler-sfc/-/compiler-sfc-3.4.27.tgz",
51 "integrity": "sha512-nDwntUEADssW8e0rrmE0+OrONwmRlegDA1pD6QhVeXxjIytV03yDqTey9SBDiALsvAd5U4ZrEKbMyVXhX6mCGA==",
52 "dev": true,
53 "dependencies": {
54 "@babel/parser": "^7.24.4",
55 "@vue/compiler-core": "3.4.27",
56 "@vue/compiler-dom": "3.4.27",
57 "@vue/compiler-ssr": "3.4.27",
58 "@vue/shared": "3.4.27",
59 "estree-walker": "^2.0.2",
60 "magic-string": "^0.30.10",
61 "postcss": "^8.4.38",
62 "source-map-js": "^1.2.0"
63 }
64 },
65 "node_modules/@vue/compiler-ssr": {
66 "version": "3.4.27",
67 "resolved": "https://registry.npmjs.org/@vue/compiler-ssr/-/compiler-ssr-3.4.27.tgz",
68 "integrity": "sha512-CVRzSJIltzMG5FcidsW0jKNQnNRYC8bT21VegyMMtHmhW3UOI7knmUehzswXLrExDLE6lQCZdrhD4ogI7c+vuw==",
69 "dev": true,
70 "dependencies": {
71 "@vue/compiler-dom": "3.4.27",
72 "@vue/shared": "3.4.27"
73 }
74 },
75 "node_modules/@vue/reactivity": {
76 "version": "3.4.27",
77 "resolved": "https://registry.npmjs.org/@vue/reactivity/-/reactivity-3.4.27.tgz",
78 "integrity": "sha512-kK0g4NknW6JX2yySLpsm2jlunZJl2/RJGZ0H9ddHdfBVHcNzxmQ0sS0b09ipmBoQpY8JM2KmUw+a6sO8Zo+zIA==",
79 "dev": true,
80 "dependencies": {
81 "@vue/shared": "3.4.27"
82 }
83 },
84 "node_modules/@vue/runtime-core": {
85 "version": "3.4.27",
86 "resolved": "https://registry.npmjs.org/@vue/runtime-core/-/runtime-core-3.4.27.tgz",
87 "integrity": "sha512-7aYA9GEbOOdviqVvcuweTLe5Za4qBZkUY7SvET6vE8kyypxVgaT1ixHLg4urtOlrApdgcdgHoTZCUuTGap/5WA==",
88 "dev": true,
89 "dependencies": {
90 "@vue/reactivity": "3.4.27",
91 "@vue/shared": "3.4.27"
92 }
93 },
94 "node_modules/@vue/runtime-dom": {
95 "version": "3.4.27",
96 "resolved": "https://registry.npmjs.org/@vue/runtime-dom/-/runtime-dom-3.4.27.tgz",
97 "integrity": "sha512-ScOmP70/3NPM+TW9hvVAz6VWWtZJqkbdf7w6ySsws+EsqtHvkhxaWLecrTorFxsawelM5Ys9FnDEMt6BPBDS0Q==",
98 "dev": true,
99 "dependencies": {
100 "@vue/runtime-core": "3.4.27",
101 "@vue/shared": "3.4.27",
102 "csstype": "^3.1.3"
103 }
104 },
105 "node_modules/@vue/server-renderer": {
106 "version": "3.4.27",
107 "resolved": "https://registry.npmjs.org/@vue/server-renderer/-/server-renderer-3.4.27.tgz",
108 "integrity": "sha512-dlAMEuvmeA3rJsOMJ2J1kXU7o7pOxgsNHVr9K8hB3ImIkSuBrIdy0vF66h8gf8Tuinf1TK3mPAz2+2sqyf3KzA==",
109 "dev": true,
110 "dependencies": {
111 "@vue/compiler-ssr": "3.4.27",
112 "@vue/shared": "3.4.27"
113 },
114 "peerDependencies": {
115 "vue": "3.4.27"
116 }
117 },
118 "node_modules/@vue/shared": {
119 "version": "3.4.27",
120 "resolved": "https://registry.npmjs.org/@vue/shared/-/shared-3.4.27.tgz",
121 "integrity": "sha512-DL3NmY2OFlqmYYrzp39yi3LDkKxa5vZVwxWdQ3rG0ekuWscHraeIbnI8t+aZK7qhYqEqWKTUdijadunb9pnrgA==",
122 "dev": true
123 },
124 "node_modules/csstype": {
125 "version": "3.1.3",
126 "resolved": "https://registry.npmjs.org/csstype/-/csstype-3.1.3.tgz",
127 "integrity": "sha512-M1uQkMl8rQK/szD0LNhtqxIPLpimGm8sOBwU7lLnCpSbTyY3yeU1Vc7l4KT5zT4s/yOxHH5O7tIuuLOCnLADRw==",
128 "dev": true
129 },
130 "node_modules/entities": {
131 "version": "4.5.0",
132 "resolved": "https://registry.npmjs.org/entities/-/entities-4.5.0.tgz",
133 "integrity": "sha512-V0hjH4dGPh9Ao5p0MoRY6BVqtwCjhz6vI5LT8AJ55H+4g9/4vbHx1I54fS0XuclLhDHArPQCiMjDxjaL8fPxhw==",
134 "dev": true,
135 "engines": {
136 "node": ">=0.12"
137 },
138 "funding": {
139 "url": "https://github.com/fb55/entities?sponsor=1"
140 }
141 },
142 "node_modules/estree-walker": {
143 "version": "2.0.2",
144 "resolved": "https://registry.npmjs.org/estree-walker/-/estree-walker-2.0.2.tgz",
145 "integrity": "sha512-Rfkk/Mp/DL7JVje3u18FxFujQlTNR2q6QfMSMB7AvCBx91NGj/ba3kCfza0f6dVDbw7YlRf/nDrn7pQrCCyQ/w==",
146 "dev": true
147 },
148 "node_modules/magic-string": {
149 "version": "0.30.10",
150 "resolved": "https://registry.npmjs.org/magic-string/-/magic-string-0.30.10.tgz",
151 "integrity": "sha512-iIRwTIf0QKV3UAnYK4PU8uiEc4SRh5jX0mwpIwETPpHdhVM4f53RSwS/vXvN1JhGX+Cs7B8qIq3d6AH49O5fAQ==",
152 "dev": true,
153 "dependencies": {
154 "@jridgewell/sourcemap-codec": "^1.4.15"
155 }
156 },
157 "node_modules/nanoid": {
158 "version": "3.3.7",
159 "resolved": "https://registry.npmjs.org/nanoid/-/nanoid-3.3.7.tgz",
160 "integrity": "sha512-eSRppjcPIatRIMC1U6UngP8XFcz8MQWGQdt1MTBQ7NaAmvXDfvNxbvWV3x2y6CdEUciCSsDHDQZbhYaB8QEo2g==",
161 "dev": true,
162 "funding": [
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165 "url": "https://github.com/sponsors/ai"
166 }
167 ],
168 "bin": {
169 "nanoid": "bin/nanoid.cjs"
170 },
171 "engines": {
172 "node": "^10 || ^12 || ^13.7 || ^14 || >=15.0.1"
173 }
174 },
175 "node_modules/picocolors": {
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177 "resolved": "https://registry.npmjs.org/picocolors/-/picocolors-1.0.1.tgz",
178 "integrity": "sha512-anP1Z8qwhkbmu7MFP5iTt+wQKXgwzf7zTyGlcdzabySa9vd0Xt392U0rVmz9poOaBj0uHJKyyo9/upk0HrEQew==",
179 "dev": true
180 },
181 "node_modules/postcss": {
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183 "resolved": "https://registry.npmjs.org/postcss/-/postcss-8.4.38.tgz",
184 "integrity": "sha512-Wglpdk03BSfXkHoQa3b/oulrotAkwrlLDRSOb9D0bN86FdRyE9lppSp33aHNPgBa0JKCoB+drFLZkQoRRYae5A==",
185 "dev": true,
186 "funding": [
187 {
188 "type": "opencollective",
189 "url": "https://opencollective.com/postcss/"
190 },
191 {
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193 "url": "https://tidelift.com/funding/github/npm/postcss"
194 },
195 {
196 "type": "github",
197 "url": "https://github.com/sponsors/ai"
198 }
199 ],
200 "dependencies": {
201 "nanoid": "^3.3.7",
202 "picocolors": "^1.0.0",
203 "source-map-js": "^1.2.0"
204 },
205 "engines": {
206 "node": "^10 || ^12 || >=14"
207 }
208 },
209 "node_modules/source-map-js": {
210 "version": "1.2.0",
211 "resolved": "https://registry.npmjs.org/source-map-js/-/source-map-js-1.2.0.tgz",
212 "integrity": "sha512-itJW8lvSA0TXEphiRoawsCksnlf8SyvmFzIhltqAHluXd88pkCd+cXJVHTDwdCr0IzwptSm035IHQktUu1QUMg==",
213 "dev": true,
214 "engines": {
215 "node": ">=0.10.0"
216 }
217 },
218 "node_modules/vue": {
219 "version": "3.4.27",
220 "resolved": "https://registry.npmjs.org/vue/-/vue-3.4.27.tgz",
221 "integrity": "sha512-8s/56uK6r01r1icG/aEOHqyMVxd1bkYcSe9j8HcKtr/xTOFWvnzIVTehNW+5Yt89f+DLBe4A569pnZLS5HzAMA==",
222 "dev": true,
223 "dependencies": {
224 "@vue/compiler-dom": "3.4.27",
225 "@vue/compiler-sfc": "3.4.27",
226 "@vue/runtime-dom": "3.4.27",
227 "@vue/server-renderer": "3.4.27",
228 "@vue/shared": "3.4.27"
229 },
230 "peerDependencies": {
231 "typescript": "*"
232 },
233 "peerDependenciesMeta": {
234 "typescript": {
235 "optional": true
236 }
237 }
238 }
239 }
240}目录