| /** |
| * 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 |
| |
| |
