ce4c83ff
 wxy
初始提交
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/**
* utilities for hashing config objects.
* basically iteratively updates hash with a JSON-like format
*/
"use strict"
exports.__esModule = true
const createHash = require('crypto').createHash
const stringify = JSON.stringify
function hashify(value, hash) {
if (!hash) hash = createHash('sha256')
if (value instanceof Array) {
hashArray(value, hash)
} else if (value instanceof Object) {
hashObject(value, hash)
} else {
hash.update(stringify(value) || 'undefined')
}
return hash
}
exports.default = hashify
function hashArray(array, hash) {
if (!hash) hash = createHash('sha256')
hash.update('[')
for (let i = 0; i < array.length; i++) {
hashify(array[i], hash)
hash.update(',')
}
hash.update(']')
return hash
}
hashify.array = hashArray
exports.hashArray = hashArray
function hashObject(object, hash) {
if (!hash) hash = createHash('sha256')
hash.update("{")
Object.keys(object).sort().forEach(key => {
hash.update(stringify(key))
hash.update(':')
hashify(object[key], hash)
hash.update(",")
})
hash.update('}')
return hash
}
hashify.object = hashObject
exports.hashObject = hashObject
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