This is a types-only npm package providing the ArduinoContext API contract for Arduino IDE 2.x and BoardLab tools. The npm tarball ships no runtime JavaScript; runtime providers are supplied by the host environment.

The main entry in package.json exists for the Arduino IDE 2.x / Theia extension build. The runtime JavaScript referenced by main is not published to npm.

• A compile-time contract for the ArduinoContext API.
• The npm package contains no runtime JavaScript.
• The runtime provider is host-specific (IDE2 built-in or BoardLab in VS Code).

The primary, current target is Visual Studio Code with BoardLab as the runtime provider. The IDE2 lane (0.1.x) is legacy and receives compatibility-only updates.

• Visual Studio Code: provider is BoardLab (dankeboy36.boardlab). Tools should depend on BoardLab for runtime access.
• Arduino IDE 2.x: provider is bundled in the IDE. It does not download this extension from Open VSX or the Visual Studio Code Marketplace.

• BoardLab lane: vscode-arduino-api@latest (0.2.x+) for Visual Studio Code + BoardLab.
• IDE2 lane: vscode-arduino-api@ide2 (0.1.x) for Arduino IDE 2.x tools (deprecated API surface).

This package provides only TypeScript types. Install the appropriate version depending on your target environment:

npm install -D vscode-arduino-api

BoardLab provides the runtime API in Visual Studio Code and must be present as an extension dependency.

npm install -D vscode-arduino-api@ide2

These peer dependencies are required for type resolution. Install them if they are not already present in your extension development setup:

npm install -D ardunno-cli boards-list @types/vscode

Only one provider is active at a time. Choose the provider that matches your target. If you target IDE2 only, use the IDE2 provider ID and do not include BoardLab.

import * as vscode from 'vscode'
import type { ArduinoContext } from 'vscode-arduino-api'

// Visual Studio Code + BoardLab target.
const PROVIDERS = ['dankeboy36.boardlab'] as const

// Arduino IDE 2.x target: use this instead of the BoardLab provider.
// const PROVIDERS = ['dankeboy36.vscode-arduino-api'] as const

export function tryGetArduinoContext(): ArduinoContext | undefined {
  for (const id of PROVIDERS) {
    const ext = vscode.extensions.getExtension(id)
    const api = ext?.exports as ArduinoContext | undefined
    if (api) return api
  }
  return undefined
}

• Visual Studio Code extension: add extensionDependencies on dankeboy36.boardlab.
• Arduino IDE 2.x tool VSIX: do not add extensionDependencies; IDE2 does not download from Open VSX or the Visual Studio Code Marketplace.

• IDE2 lane: publish 0.1.x patch releases and apply the ide2 dist-tag, which always points to the latest 0.1.x version compatible with Arduino IDE 2.x.
• BoardLab lane: latest remains 0.2.x+.

npm dist-tag ls vscode-arduino-api

See the generated API docs in docs/README.md.