feat: add logger

Author: cc-hearts

__test__/lib/logger.test.ts

@@ -0,0 +1,10 @@
+import Logger from '../../lib/log/index'
+
+describe('logger', () => {
+  it('logger test', () => {
+    const logger = new Logger()
+
+    logger.info('log')
+    expect(true).toBe(true)
+  })
+})

lib/log/index.ts

@@ -0,0 +1,90 @@
+const LOG_LEVELS = {
+  ERROR: 0,
+  WARNING: 1,
+  NORMAL: 2,
+  DEBUG: 3,
+  TRACE: 4,
+}
+
+const ANSI_COLORS = {
+  [LOG_LEVELS.ERROR]: '\x1b[31m', // 红色
+  [LOG_LEVELS.WARNING]: '\x1b[33m', // 黄色
+  [LOG_LEVELS.NORMAL]: '\x1b[32m', // 绿色
+  [LOG_LEVELS.DEBUG]: '\x1b[34m', // 蓝色
+  [LOG_LEVELS.TRACE]: '\x1b[35m' // 紫色
+}
+
+const LOG_LEVEL_NAMES = {
+  [LOG_LEVELS.ERROR]: 'error',
+  [LOG_LEVELS.WARNING]: 'warning',
+  [LOG_LEVELS.NORMAL]: 'info',
+  [LOG_LEVELS.DEBUG]: 'debug',
+  [LOG_LEVELS.TRACE]: 'trace'
+}
+
+function isUnicodeSupported() {
+  // @ts-ignore
+  return typeof window === 'undefined'
+}
+
+const unicode = isUnicodeSupported()
+const s = (c: string, fallback: string) => (unicode ? c : fallback)
+
+const TYPE_ICONS = {
+  error: s('✖', '×'),
+  fatal: s('✖', '×'),
+  ready: s('✔', '√'),
+  warn: s('⚠', '‼'),
+  info: s('ℹ', 'i'),
+  success: s('✔', '√'),
+  debug: s('⚙', 'D'),
+  trace: s('→', '→'),
+  fail: s('✖', '×'),
+  start: s('◐', 'o'),
+  log: ''
+}
+class Logger {
+  private level: number
+  constructor(level = LOG_LEVELS.NORMAL) {
+    this.level = level
+  }
+
+  setLevel(level: number) {
+    this.level = level
+  }
+
+  log(level: number, message: string) {
+    if (level > this.level) {
+      return
+    }
+    const color = ANSI_COLORS[level] || ANSI_COLORS[LOG_LEVELS.NORMAL]
+    const levelName: string = LOG_LEVEL_NAMES[level]
+    const icon = Reflect.get(TYPE_ICONS, levelName) || ''
+    const timestamp = new Date().toLocaleString()
+    console.log(
+      `${color}${icon}\x1b[0m [${levelName}] (${timestamp}) ${message}`
+    )
+  }
+
+  error(message: string) {
+    this.log(LOG_LEVELS.ERROR, message)
+  }
+
+  warning(message: string) {
+    this.log(LOG_LEVELS.WARNING, message)
+  }
+
+  normal(message: string) {
+    this.log(LOG_LEVELS.NORMAL, message)
+  }
+
+  info(message: string) {
+    this.log(LOG_LEVELS.DEBUG, message)
+  }
+
+  trace(message: string) {
+    this.log(LOG_LEVELS.TRACE, message)
+  }
+}
+
+export default Logger