packages/jsii-pacmak/lib/logging.ts

export enum Level {
  WARN = -1,
  QUIET = 0,
  INFO = 1,
  VERBOSE = 2,
  SILLY = 3,
}

export const LEVEL_INFO: number = Level.INFO;
export const LEVEL_VERBOSE: number = Level.VERBOSE;
export const LEVEL_SILLY: number = Level.SILLY;

/** The minimal logging level for messages to be emitted. */
export let level = Level.QUIET;

export function configure({ level: newLevel }: { level: Level }) {
  level = newLevel;
}

export function warn(fmt: string, ...args: any[]) {
  log(Level.WARN, fmt, ...args);
}

export function info(fmt: string, ...args: any[]) {
  log(Level.INFO, fmt, ...args);
}

export function debug(fmt: string, ...args: any[]) {
  log(Level.VERBOSE, fmt, ...args);
}

function log(messageLevel: Level, fmt: string, ...args: any[]) {
  if (level >= messageLevel) {
    const levelName = Level[messageLevel];
    console.error(`[jsii-pacmak] [${levelName}]`, fmt, ...args);
  }
}