Method interpolate

src/lib/FancyError.ts:88–96

* Interpolate placeholders in a string with context values. * Placeholders use the format: {{key}}

(text: string, context: ErrorContext)

	 * Placeholders use the format: {{key}}
	 */
	private static interpolate (text: string, context: ErrorContext): string {
		return text.replace(/\{\{(\w+)\}\}/g, (match, key) => {
			const value = context[key];
			if (value === undefined) {
				return match; // Keep placeholder if no value provided
			}
			return String(value);
		});
	}

	/**
	 * Deep interpolate an object, replacing all string placeholders with context values.