@reventlessdev/rescript-hash-object

@reventlessdev/rescript-hash-object

Alpha. APIs and on-disk formats can change without notice between releases. Pin exact versions and expect breaking changes.

ReScript bindings for hash-obj.

Install

pnpm add @reventlessdev/rescript-hash-object

Add it to your rescript.json dependencies:

{
  "dependencies": ["@reventlessdev/rescript-hash-object"]
}

API Documentation

hashDict

Generates a hash string from a dictionary object.

hashDict: (~dict: dict<string>, ~options: Options.t=?) => string

Parameters:

• dict: A dictionary with string values to hash
• options (optional): Configuration options for hash generation

Options

type Options.t = {
  encoding?: encoding,
  algorithm?: algorithm,
}

encoding - Output encoding format:

• Hex (default) - Hexadecimal string
• Base64 - Base64-encoded string
• Buffer - Raw buffer output
• Latin1 - Latin1 string encoding

algorithm - Hash algorithm to use:

• SHA256 (default) - SHA-256 algorithm
• MD5 - MD5 algorithm
• SHA1 - SHA-1 algorithm
• SHA512 - SHA-512 algorithm

Examples

Basic usage (default SHA256 with hex encoding)

open HashObj

let data = Dict.fromArray([("name", "Alice"), ("age", "30")])
let hash = hashDict(~dict=data)
// => "8c6976e5b5410415bde908bd4dee15dfb167a9c873fc4bb8a81f6f2ab448a918"

Using different algorithms

open HashObj

let data = Dict.fromArray([("user", "bob"), ("id", "42")])

// MD5
let md5Hash = hashDict(~dict=data, ~options={algorithm: MD5})

// SHA1
let sha1Hash = hashDict(~dict=data, ~options={algorithm: SHA1})

// SHA512
let sha512Hash = hashDict(~dict=data, ~options={algorithm: SHA512})

Using different encodings

open HashObj

let data = Dict.fromArray([("key", "value")])

// Hex encoding (default)
let hexHash = hashDict(~dict=data, ~options={encoding: Hex})

// Base64 encoding
let base64Hash = hashDict(~dict=data, ~options={encoding: Base64})

// Latin1 encoding
let latin1Hash = hashDict(~dict=data, ~options={encoding: Latin1})

Combining algorithm and encoding

open HashObj

let data = Dict.fromArray([
  ("environment", "production"),
  ("version", "1.2.3"),
  ("region", "us-east-1"),
])

// SHA512 with Base64 encoding
let hash = hashDict(
  ~dict=data,
  ~options={
    algorithm: SHA512,
    encoding: Base64,
  },
)

Links

• Documentation — docs.reventless.dev
• Repository — ReventlessDev/reventless-core
• Changelog

License

Apache-2.0