balena-cli/typings/resin-device-init.d.ts

declare module 'resin-device-init' {
	import { EventEmitter } from "events";

	interface OperationState {
		operation: CopyOperation | ReplaceOperation | RunScriptOperation | BurnOperation;
		percentage: number;
	}

	interface Operation {
		command: string;
	}

	interface CopyOperation extends Operation {
		command: 'copy';
		from: { path: string };
		to: { path: string };
	}

	interface ReplaceOperation extends Operation {
		command: 'replace';
		copy: string;
		replace: string;
		file: {
			path: string;
		}
	}

	interface RunScriptOperation extends Operation {
		command: 'run-script';
		script: string;
		arguments?: string[];
	}

	interface BurnOperation extends Operation {
		command: 'burn';
		image?: string;
	}

	interface BurnProgress {
		type: 'write' | 'check';
		percentage: number;
		transferred: number;
		length: number;
		remaining: number;
		eta: number;
		runtime: number;
		delta: number;
		speed: number;
	}

	interface InitializeEmitter {
		on(event: 'stdout', callback: (msg: string) => void): void;
		on(event: 'stderr', callback: (msg: string) => void): void;
		on(event: 'state', callback: (state: OperationState) => void): void;
		on(event: 'burn', callback: (state: BurnProgress) => void): void;
	}

	export function initialize(image: string, deviceType: string, config: {}): Promise<InitializeEmitter>
}