Ask questionsChange public API for execution to return an object and provide a callback which is called when interpreter setting changes

Old design:

Want to have a public API that returns an object which initially contains an array of strings for the command to execute a Python interpreter. The expectation is we may need to include environment variable details at some point. Update the API as follows,

export interface IExtensionApi {
     * Promise indicating whether all parts of the extension have completed loading or not.
     * @type {Promise<void>}
     * @memberof IExtensionApi
    ready: Promise<void>;
    debug: {
         * Generate an array of strings for commands to pass to the Python executable to launch the debugger for remote debugging.
         * Users can append another array of strings of what they want to execute along with relevant arguments to Python.
         * E.g `['/Users/..../pythonVSCode/pythonFiles/lib/python/debugpy', '--listen', 'localhost:57039', '--wait-for-client']`
         * @param {string} host
         * @param {number} port
         * @param {boolean} [waitUntilDebuggerAttaches=true]
         * @returns {Promise<string[]>}
        getRemoteLauncherCommand(host: string, port: number, waitUntilDebuggerAttaches: boolean): Promise<string[]>;

         * Gets the path to the debugger package used by the extension.
         * @returns {Promise<string>}
        getDebuggerPackagePath(): Promise<string | undefined>;
     * Return internal settings within the extension which are stored in VSCode storage
    settings: {
         * An event that is emitted when execution details (for a resource) change. For instance, when interpreter configuration changes.
        readonly onDidChangeExecutionDetails: Event<Uri | undefined>;
         * Returns all the details the consumer needs to execute code within the selected environment,
         * corresponding to the specified resource taking into account any workspace-specific settings
         * for the workspace to which this resource belongs.
         * @param {Resource} [resource] A resource for which the setting is asked for.
         * * When no resource is provided, the setting scoped to the first workspace folder is returned.
         * * If no folder is present, it returns the global setting.
         * @returns {({ execCommand: string[] | undefined })}
            resource?: Resource
        ): {
             * E.g of execution commands returned could be,
             * * `['<path to the interpreter set in settings>']`
             * * `['<path to the interpreter selected by the extension when setting is not set>']`
             * * `['conda', 'run', 'python']` which is used to run from within Conda environments.
             * or something similar for some other Python environments.
             * @type {(string[] | undefined)} When return value is `undefined`, it means no interpreter is set.
             * Otherwise, join the items returned using space to construct the full execution command.
            execCommand: string[] | undefined;
    datascience: {
         * Launches Data Viewer component.
         * @param {IDataViewerDataProvider} dataProvider Instance that will be used by the Data Viewer component to fetch data.
         * @param {string} title Data Viewer title
        showDataViewer(dataProvider: IDataViewerDataProvider, title: string): Promise<void>;

Answer questions karrtikr

Also, the default VSCode setting change event API do not include the new info, so we are just keeping up with the trend 🙂


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