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/** * Logs are assigned a priority number. * Higher numbers are less important information. * Set your desired log level higher to get more info. * *  -1 nothing *   0 only errors *   1 also warnings *   2 also logs *   3 also debugs * * Logs also come from different "sources" which can * have different log level settings. * * Two ways to modify the log level settings: * * 1. Set an environment variable in the shell. *    This applies to all "sources" (can't be set individually) *         EARTHSTAR_LOG_LEVEL=2 npm run test * * 2. Use setLogLevels() to globally modify the levels: *         setLogLevels({ sync: 2 }); * * The environment variable wins over the numbers set by setLogLevels. */
//================================================================================// TYPES
type LogSource = string;
export enum LogLevel {  None = -1,  Error = 0, // default  Warn = 1,  Log = 2,  Info = 3,  Debug = 4, // most verbose}export const DEFAULT_LOG_LEVEL = LogLevel.Error;
type LogLevels = Record<LogSource, LogLevel>;
//================================================================================// ENV VAR
/*// get the single log level number from the environment, or undefined if not setconst readEnvLogLevel = (): LogLevel | undefined => {    if (process?.env?.EARTHSTAR_LOG_LEVEL) {        const parsed = parseInt(process.env.EARTHSTAR_LOG_LEVEL);        if (isNaN(parsed)) { return undefined }        if (parsed !== Math.floor(parsed)) { return undefined; }        return parsed;    }    return undefined;}
// apply env var settingconst ENV_LOG_LEVEL = readEnvLogLevel();*/
//================================================================================// GLOBAL SETTINGS
// make global singleton to hold log levelslet globalLogLevels: LogLevels = {  // result is the min of (_env) and anything else  _default: DEFAULT_LOG_LEVEL,};
export function updateLogLevels(newLogLevels: LogLevels): void {  globalLogLevels = {    ...globalLogLevels,    ...newLogLevels,  };}
export function setLogLevel(source: LogSource, level: LogLevel) {  globalLogLevels[source] = level;}
export function setDefaultLogLevel(level: LogLevel) {  globalLogLevels._default = level;}
export function getLogLevel(source: LogSource): LogLevel {  if (source in globalLogLevels) {    return globalLogLevels[source];  } else {    return globalLogLevels._default;  }}
export function getLogLevels(): LogLevels {  return globalLogLevels;}
//================================================================================// Logger class
type LogColor =  | "blue"  | "aqua"  | "darkcyan"  | "cyan"  | "dimgray"  | "slategray"  | "green"  | "springgreen"  | "grey"  | "darkMagenta"  | "magenta"  | "red"  | "orangeRed"  | "salmon"  | "lightsalmon"  | "gold"  | "yellow";
export class Logger {  source: LogSource;  color: LogColor | undefined = undefined;
  constructor(source: LogSource, color?: LogColor) {    this.source = source;    this.color = color || "aqua";  }
  _print(level: LogLevel, showTag: boolean, indent: string, ...args: any[]) {    if (level <= getLogLevel(this.source)) {      if (showTag) {        const tag = `[${this.source}]`;
        if (this.color !== undefined) {          const tagArgs = [`%c ${tag}`, `color: ${this.color}`];          console.log(indent, ...tagArgs, ...args);        } else {          console.log(indent, tag, ...args);        }      } else {        console.log(indent, ...args);      }    }  }
  error(...args: any[]) {    this._print(LogLevel.Error, true, "!!", ...args);  }  warn(...args: any[]) {    this._print(LogLevel.Warn, true, "! ", ...args);  }  log(...args: any[]) {    this._print(LogLevel.Log, true, "  ", ...args);  }  info(...args: any[]) {    this._print(LogLevel.Info, true, "    ", ...args);  }  debug(...args: any[]) {    this._print(LogLevel.Debug, true, "      ", ...args);  }
  blank() {    this._print(LogLevel.Info, false, "");  }}