@blockless/sdk-ts

This sdk is designed to work with Javascript/Typescript and compile for the BLESS Javy WASM Engine. As such this engine does not have full support for Node / Web APIs, but a majority of pure JavaScript will work, including some of those from the npm ecosystem.

You don't need to use this SDK directly, it works as a module add on to your current npm project, or you can use blessnet CLI to initialize a project that uses this SDK.

npx blessnet init

The SDK natively supports

• json
• http
• crypto
• llm

Install this SDK

$ yarn add @blockless/sdk-ts
# or using npm
$ npm i @blockless/sdk-ts

Example of using this SDK.

import { InputProps, entryMain } from '@blockless/sdk-ts'
import { AbiCoder } from 'ethers'

interface Arguments {
	n: number
	v: string
}

entryMain(async (input: InputProps<Arguments>) => {
	console.log('\n Example: Stdin')

	if (Object.keys(input.args).length === 0) {
		console.log('Missing args.')
		return {}
	}

	const coder = AbiCoder.defaultAbiCoder()
	const coded = coder.encode(['string'], [input.args.v])

	return { nonce: input.args.n, value: coded }
})

How to build

bls-sdk-ts build ./index.ts -o <outDirectory> -f <outFile>

Building examples locally

Building fetch example

npm run build && node ./dist/bundler build ./examples/fetch/index.ts -o ./build -f fetch-example.wasm --features fetch

Building the LLM example

npm run build && node ./dist/bundler build ./examples/llm/index.ts -o ./build -f llm-example.wasm --features llm

Plugin Version Management

Default behavior (pinned version)

By default, builds use a pinned version of the Bless plugins for consistency:

npm run build && node ./dist/bundler build ./examples/fetch/index.ts -o ./build -f fetch-example.wasm

Update to latest version

Use --update=true to fetch and install the latest plugin version:

npm run build && node ./dist/bundler build ./examples/fetch/index.ts -o ./build -f fetch-example.wasm --update=true

Use specific version

You can specify a particular plugin version by providing it as a value to the --update flag:

# Version with 'v' prefix
npm run build && node ./dist/bundler build ./examples/fetch/index.ts -o ./build -f fetch-example.wasm --update=v0.2.3

# Version without 'v' prefix (will be normalized)
npm run build && node ./dist/bundler build ./examples/fetch/index.ts -o ./build -f fetch-example.wasm --update=0.2.3

Note: The --update flag will force the re-installation of Javy and the plugins. When provided with a version, it will install that specific version. When provided with true, it will fetch the latest version. When provided with false, it will use the pinned version.

Uninstall Javy and plugins

npm run build && node ./dist/bundler uninstall

Features

Feature	Description
full	Adds support for all plugins.
llm	Adds support for the LLM plugin.
crypto	Adds support for the Crypto plugin.
fetch	Adds support for the Fetch plugin.