Extract to constant in enclosing scope should optionally also replace later usage

Given this code:

	public setParts(lineNumber: number, parts: GhostTextPart[]): void {
		const foreground = this.themeService.getColorTheme().getColor(ghostTextForeground);
		let opacity: string | undefined = undefined;
		let color: string | undefined = undefined;
		if (foreground) {


			opacity = String(foreground.rgba.a);
			color = Color.Format.CSS.format(opaque(foreground))!;
		}

		const borderColor = this.themeService.getColorTheme().getColor(ghostTextBorder);
		let border: string | undefined = undefined;
		if (borderColor) {
			border = `2px dashed ${borderColor}`;
		}

I would like to factor our this.themeService.getColorTheme() and extract it into its own constant. This should include all later usages.
Since there could be side effects in between, I suggest to do it only if later occurences are also selected.

This is my current workflow and I don't feel smart doing it like that. Multicursors don't really help here.

Also, it would be nice if the name of the new local is heuristically derived from the expression ((...).getFooBar(...) -> fooBar`).

I'm willing to do a PR if I get some pointers.

Let's make the editing experience in VS Code even more amazing 😉

まず、TypeScript リポジトリ内で extract-to-constant リファクタリングの実装とそのテストを見つけます。次に、示されている TypeScript の例を再現し、その後、選択範囲の境界と後続の出現箇所がどのように処理されるかを追跡します。完了条件は、任意の包含スコープ抽出で、選択されている場合に限って後続の使用箇所を含められることです。ヒューリスティックな命名については別途検討します。