如何为VS Code扩展配置package.json？以及如何在package.json中配置vscode_deno的exePath参数（默认值为null）？

Hey there! Let's tackle your VS Code extension configuration questions one by one:

The package.json is the backbone of any VS Code extension—it holds all the metadata, activation rules, feature contributions, and dependencies that make your extension work. Here's a breakdown of key sections you'll need to configure:

• Basic Metadata: These fields define your extension's identity for the marketplace and VS Code itself. Example:

  {
    "name": "your-extension-id",
    "displayName": "Friendly Extension Name",
    "version": "0.0.1",
    "description": "What your extension does in a nutshell",
    "publisher": "your-publisher-name"
  }
  

• Activation Events: Tell VS Code when to load your extension (to keep performance snappy). Common options include:

  • onCommand:your-extension.command-name: Activate when a specific command is run
  • onStartupFinished: Activate after VS Code finishes launching
  • workspaceContains:**.ts: Activate when the workspace has TypeScript files
    Example snippet:

  "activationEvents": [
    "onCommand:deno.initialize",
    "workspaceContains:**.ts"
  ]
  

• Contribution Points: This is where you define what your extension adds to VS Code—commands, settings, keybindings, snippets, etc. For your second question, we'll focus on the configuration contribution here.

• Dependencies & Scripts: Include dev dependencies like @types/vscode for TypeScript support, and scripts to compile/watch your code:

  "devDependencies": {
    "@types/vscode": "^1.80.0",
    "typescript": "^5.0.0"
  },
  "scripts": {
    "compile": "tsc -p ./",
    "watch": "tsc -watch -p ./"
  }
  

Looking at the code const exePath = vscode.workspace.getConfiguration(EXTENSION_NS).get<string>("path");:

• EXTENSION_NS is your extension's configuration namespace—for the vscode_deno extension, this is almost certainly "deno".
• The get("path") call is fetching the path setting under that namespace. To set a default value (instead of null), you need to define this setting in your package.json's contributes.configuration section.

Here's exactly how to add it:

{
  "contributes": {
    "configuration": {
      "title": "Deno Configuration",
      "properties": {
        "deno.path": {
          "type": "string",
          "default": null, // Keep this as null if you want the default to be null, or replace with a system-specific path like "/usr/bin/deno" or "C:\\Program Files\\deno\\deno.exe"
          "description": "Path to the Deno executable file. Leave blank to use the system's default Deno installation."
        }
      }
    }
  }
}

Key Notes: #

• The setting key deno.path matches [EXTENSION_NS].path—make sure the namespace part matches whatever EXTENSION_NS is defined as in your code (it's probably "deno" for this extension).
• If you want to set a non-null default, just replace null with the absolute path to the Deno executable (adjust for Windows/macOS/Linux as needed).
• When a user hasn't configured this setting in their VS Code preferences, the get<string>("path") call will automatically return the default value you've set here.

内容的提问来源于stack exchange，提问作者cuobiezi