0.6.23 • Published 1 year ago
memory-tree v0.6.23
memory-tree
map file system into memory within lodash
Install
$ npm i memory-tree --save
Usage test/index.js
const path = require('path')
const MemoryTree = require('memory-tree')
const memory = MemoryTree({
/**
* 存储数据时触发
* @param {string} pathname 对应路径, 会根据 `\/` 分割
* @param {string/buffer} data 从文件系统获取的源数据
* @return {string/buffer} 返回修改后的数据
*/
onSet: (pathname, data) => data,
/**
* 获取数据时触发
* @param {string} pathname 对应路径, 会根据 `\/` 分割
* @param {string/buffer} data 之前存入的数据
* @return {string/buffer} 返回修改后的数据
*/
onGet: (pathname, data) => data,
/**
* 文件修改时触发检查 `fs.watch` 的 callback
* @param {string} eventType 修改类型 如: 'change'
* @param {string} pathname 事件触发的文件路径
*/
buildWatcher: (eventType, pathname) => console.log(eventType, pathname),
/**
* 允许加载到内存的资源
* @param {string} pathname 待检查资源路径
* @return {boolean} 是否允许加载到内存
*/
buildFilter: (pathname) => !/node_modules|([\\\/]|^)\./.test(pathname),
/**
* 允许从内存中保存到文件系统的资源
* @param {string} pathname 待检查资源路径
* @param {string/buffer} data 资源内容 (注: 检查路径等时刻, data未设置, 参考 lib/mem2fs.js)
* @return {boolean} 是否允许保存到文件
*/
outputFilter: (pathname, data) => (!data || data.length < 64 * 1024) && !/node_modules|([\\\/]|^)\./.test(pathname),
/**
* 输出时重命名资源
* @param {string} pathname 待检查资源路径
* @param {string/buffer} data 资源内容 【可以根据内容md5重命名】
* @return {string} 重命名结果
*/
outputRename: (pathname, data) => pathname
})
memory.build(path.resolve(__dirname, '../'), {watch: 1}).then(e => {
memory.output(path.resolve(__dirname, '../../memory-tree-out')).then(e => {
console.log('copy ok!')
}).catch(e => {
console.log(e)
})
}).catch(e => {
console.log(e)
})
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