53 lines
1.5 KiB
JavaScript
53 lines
1.5 KiB
JavaScript
/* 基础小工具，可通用于服务端和用户端
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*/
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const fs = require('fs')
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const path = require('path')
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module.exports = {
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sleep: (ms) => new Promise((resolve, reject) => setTimeout(resolve, ms)),
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parseJsonPossible(value) {
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try {
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return JSON.parse(value)
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} catch (e) {
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return value
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}
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},
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sortAndFilterJson({ fields, entity, exclude = [] } = {}) {
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const newEntity = {}
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for (let key of Object.keys(fields).sort()) {
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if (typeof (entity[key] !== 'undefined') && !Number.isNaN(entity[key]) && entity[key] !== Infinity) {
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newEntity[key] = entity[key]
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}
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}
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for (let exkey of exclude) {
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delete newEntity[exkey]
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}
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return JSON.stringify(newEntity)
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},
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getDynamicConfig(dynamicConfigFile='ConfigDynamic.js') { // dynamicConfigFile should be absolute or relative to the node process's dir.
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const fullpath = path.join(process.cwd(), dynamicConfigFile)
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if (fs.existsSync(fullpath)) {
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delete require.cache[require.resolve(fullpath)] // delete require.cache[fullpath] 不起作用
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return require(fullpath)
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} else {
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return {}
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}
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},
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name2port(name='') {
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let port = name.toLowerCase()
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.replace(/[abc]/g, 2)
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.replace(/[def]/g, 3)
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.replace(/[ghi]/g, 4)
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.replace(/[jkl]/g, 5)
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.replace(/[mno]/g, 6)
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.replace(/[pqrs]/g, 7)
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.replace(/[tuv]/g, 8)
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.replace(/[wxyz]/g, 9)
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return parseInt(port)
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}
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} |