merge: feature/log

[MIP] Add powerful logger

dist/utils.js

@@ -1,7 +1,136 @@
-const os = require('os');
+"use strict";
+const os = require("os");
+const path = require("path");
+const chalk_1 = require("chalk");
+// 堆栈报错格式: https://github.com/v8/v8/wiki/Stack%20Trace%20API
+const stackReg = /at\s+(.*)\s+\((.*):(\d*):(\d*)\)/i;
+const stackReg2 = /at\s+()(.*):(\d*):(\d*)/i;
+/**
+ * 自动为数字补0
+ * @param num
+ */
+function padZero(num) {
+    if (num < 10) {
+        return '0' + num;
+    }
+    else {
+        return num + '';
+    }
+}
+/**
+ * 增强型Date对象
+ */
+function getPowerDate() {
+    const date = new Date();
+    date.now = () => date.getTime() + '';
+    date.format = () => {
+        const year = padZero(date.getFullYear()), month = padZero(date.getMonth() + 1), day = padZero(date.getDate()), hour = padZero(date.getHours()), minute = padZero(date.getMinutes()), second = padZero(date.getSeconds());
+        return `${year}/${month}/${day} ${hour}:${minute}:${second}`;
+    };
+    return date;
+}
+/**
+ * 日志类
+ */
+class Logger {
+    constructor() {
+        this._colors = {
+            info: chalk_1.default.blue,
+            success: chalk_1.default.green,
+            warn: chalk_1.default.yellow,
+            error: chalk_1.default.red
+        };
+    }
+    /**
+     * 捕获日志的时间、触发函数、触发文件等详细信息
+     *
+     * @param message 日志信息
+     * @param level 日志级别
+     */
+    _capture(message, level) {
+        const error = new Error();
+        const stackList = error.stack.split('\n').slice(3);
+        const sp = stackReg.exec(stackList[0]) || stackReg2.exec(stackList[0]);
+        if (!sp) {
+            return;
+        }
+        return {
+            time: getPowerDate().format(),
+            method: sp[1],
+            path: sp[2],
+            line: sp[3],
+            pos: sp[4],
+            file: path.basename(sp[2]),
+            stack: error.stack,
+            message,
+            level
+        };
+    }
+    /**
+     * 将详细日志信息输出到控制台
+     *
+     * @param info 详细日志信息
+     */
+    _console(info) {
+        if (!info) {
+            return;
+        }
+        const colorLevel = this._colors[info.level](`[${info.level}]`);
+        return `${colorLevel} ${info.time} ${info.file}:${info.line} (${info.method}) ${info.message}`;
+    }
+    /**
+     * log级别日志(正常输出)
+     *
+     * @param message 日志信息
+     */
+    log(message) {
+        return console.log(`[log] ${message}`);
+    }
+    /**
+     * info级别日志
+     *
+     * @param message 日志信息
+     */
+    info(message) {
+        const logInfo = this._capture(message, 'info');
+        const consoleInfo = this._console(logInfo);
+        console.log(consoleInfo);
+    }
+    /**
+     * success级别日志
+     *
+     * @param message 日志信息
+     */
+    success(message) {
+        const logInfo = this._capture(message, 'success');
+        const consoleInfo = this._console(logInfo);
+        console.log(consoleInfo);
+    }
+    /**
+     * warning级别日志
+     *
+     * @param message 日志信息
+     */
+    warn(message) {
+        const logInfo = this._capture(message, 'warn');
+        const consoleInfo = this._console(logInfo);
+        console.log(consoleInfo);
+    }
+    /**
+     * error级别日志
+     *
+     * @param message 日志信息
+     */
+    error(message) {
+        const logInfo = this._capture(message, 'error');
+        const consoleInfo = this._console(logInfo);
+        console.log(consoleInfo);
+    }
+}
 module.exports = {
     get cpuNum() {
-        let len = os.cpus().length;
+        const len = os.cpus().length;
         return Math.max(len, 4);
-    }
+    },
+    logger: new Logger()
 };