/**
* Formatting utilities for the SaaS Scenario Modeler.
* Ported from modelcontextprotocol/ext-apps scenario-modeler-server.
*/
/**
* Format a number as currency with abbreviated suffixes.
* Examples: $50K, $1.2M, -$30K
*/
export function formatCurrency(value: number): string {
const absValue = Math.abs(value);
const sign = value < 0 ? "-" : "";
if (absValue >= 1_000_000) {
const formatted = (absValue / 1_000_000).toFixed(
absValue >= 10_000_000 ? 1 : 2,
);
// Remove trailing zeros after decimal
const cleaned = formatted.replace(/\.?0+$/, "");
return `${sign}$${cleaned}M`;
}
if (absValue >= 1_000) {
const formatted = (absValue / 1_000).toFixed(absValue >= 100_000 ? 0 : 1);
const cleaned = formatted.replace(/\.?0+$/, "");
return `${sign}$${cleaned}K`;
}
return `${sign}$${Math.round(absValue)}`;
}
/**
* Format a number as a percentage.
* Examples: 5%, -2.5%, +12%
*/
export function formatPercent(value: number, showSign = false): string {
const sign = showSign && value > 0 ? "+" : "";
return `${sign}${value.toFixed(1).replace(/\.0$/, "")}%`;
}
/**
* Format currency for slider display (always show K suffix for consistency).
*/
export function formatCurrencySlider(value: number): string {
if (value >= 1_000) {
return `$${(value / 1_000).toFixed(0)}K`;
}
return `$${value}`;
}
