MirroredHash

This code creates a JavaScript hash table that is 'mirrored' to the filesystem.
The filesystem mirror data can be encrypted or in the clear.

This is intended for cases where a lightweight persistent data store is needed, but a database table would be excessive.

Usage

Pretty much like a regular JavaScript hash table once it is created.

const { getMirroredHash } = require("./mirroredhash.cjs");

let mhash = getMirroredHash(<options>);

mhash[key] = value;
value = mhash[key];
delete mhash[key];
keys = Object.keys(mhash);

Options

{
    filepath:<filepath>,
    [keyhash:<hkey>],
    [vector:<iv>],
    [valuehash:<vkey>],
    [data:<{initial}>],
    [overwiteFile:<true>],
    [overwriteData:<true>]
}

filepath - Path to a directory -or- file. The filename will default to 'mhash.dat' if just a directory is given.

keyhash - [optional] A hash key to use with key values. (up to 32 characters)

valuehash - [optional] A hash key to use with the stored values. (up to 32 characters)

vector - [optional] The initialization vector to use with the keyhash/valuehash. (up to 32 characters)

data - [optional] An initial hashtable.

overwiteFile - [optional] Data from the option should override any existing data from the file.
overwriteData - [optional] Data from the file should override any data given as an option. \

Behavior