what is the options of plugins in defineConfig

[ChelesteWang]

@egoist I hope you can take the question to answer my question.
I see the type of defineConfig find the option of plugins , I'd like to learn something about how can I set the plugin option ，and what is different points of plugins and esbuildPlugins

/**
     * TSUP plugins
     * @experimental
     * @alpha
     */
    plugins?: Plugin[];

[daolou]

I tried this config, it seem throw Error:

Error: Plugin context is not set
    at PluginContainer.getContext

Then I check source code, it real exist a logic error:

1. buildStarted will check context
   

2. setContext method happend in runEsbuild:
   

3. buildStarted invoke before runEsbuild, while exec buildStarted, it not yet set context, so it should throw error: "Plugin context is not set"
   

[daolou]

#735