rhedyn/src/logging.js

const formatMap = {
  labels: {
    main: {
      start: "\x1b[1m\x1b[32m",
      end: "\x1b[0m",
    },
  },
  logTypes: {
    error: {
      start: "\x1b[31m",
      end: "\x1b[0m",
    },
    warn: {
      start: "\x1b[33m",
      end: "\x1b[0m",
    },
    info: {
      start: "\x1b[32m",
      end: "\x1b[0m",
    },
    debug: {
      start: "\x1b[34m",
      end: "\x1b[0m",
    },
  },
}

function messageStart(label, logType) {
  const labelFormatting = formatMap.labels?.[label]?.start || `[${label}] `
  const logTypeFormatting = `${formatMap.logTypes?.[logType]?.start || ""}[${logType}] `
  return `${logTypeFormatting}${labelFormatting}`
}

function messageEnd(label, logType) {
  const labelFormatting = formatMap.labels?.[label]?.end || ""
  const logTypeFormatting = formatMap.logTypes?.[logType]?.end || ""
  return `${logTypeFormatting}${labelFormatting}`
}

function logMessage(logType, label) {
  const log = console[logType]
  const startStr = messageStart(label, logType)
  const endStr = messageEnd(label, logType)
  return (message) => {
    log(`${startStr}${message}${endStr}`)
  }
}

function noop() {
}

export function getLogger(logLevel = "info", name) {
  const label = name || "genid"
  switch(logLevel) {
    case 6:
    case "trace":
      return {
        group: console.group,
        groupEnd: console.groupEnd,
        trace: console.trace,
        debug: logMessage("debug", label),
        info: logMessage("info", label),
        warn: logMessage("warn", label),
        error: logMessage("error", label),
      }
    case "debug":
      return {
        group: console.group,
        groupEnd: console.groupEnd,
        trace: noop,
        debug: logMessage("debug", label),
        info: logMessage("info", label),
        warn: logMessage("warn", label),
        error: logMessage("error", label),
      }
    case 4:
    case "info":
      return {
        group: console.group,
        groupEnd: console.groupEnd,
        trace: noop,
        debug: noop,
        info: logMessage("info", label),
        warn: logMessage("warn", label),
        error: logMessage("error", label),
      }
    case 3:
    case "warn":
      return {
        group: console.group,
        groupEnd: console.groupEnd,
        trace: noop,
        debug: noop,
        info: noop,
        warn: logMessage("warn", label),
        error: logMessage("error", label),
      }
    case 2:
    case "error":
      return {
        group: console.group,
        groupEnd: console.groupEnd,
        trace: noop,
        debug: noop,
        info: noop,
        warn: noop,
        error: logMessage("error", label),
      }
    case 1:
    case "silent":
      return {
        group: noop,
        groupEnd: noop,
        trace: noop,
        debug: noop,
        info: noop,
        warn: noop,
        error: noop,
      }

  }
}