feat: add logger package

.github/workflows/test.yml

@@ -6,6 +6,7 @@ on:
       - "handlers/**"
       - "helpers/**"
       - "plugins/**"
+      - "packages/**"
       - "rest/**"
       - "tests/**"
       - "transformers/**"

.vscode/settings.json

@@ -8,6 +8,7 @@
     "./handlers",
     "./helpers",
     "./plugins",
+    "./packages",
     "./rest",
     "./template/beginner",
     "./template/minimal",

dnt.ts

@@ -41,6 +41,14 @@ await build({
       name: "./transformers",
       path: "transformers/mod.ts",
     },
+    {
+      name: "./packages",
+      path: "packages/mod.ts",
+    },
+    {
+      name: "./logger",
+      path: "packages/logger/mod.ts",
+    },
     {
       name: "./plugins",
       path: "plugins/mod.ts",
@@ -108,6 +116,12 @@ await build({
         "transformers": [
           "./types/transformers/mod.d.ts",
         ],
+        "packages": [
+          "./types/packages/mod.d.ts",
+        ],
+        "logger": [
+          "./types/packages/logger/mod.d.ts",
+        ],
         "plugins": [
           "./types/plugins/mod.d.ts",
         ],

packages/logger/deps.ts

@@ -0,0 +1 @@
+export * from "https://deno.land/std@0.153.0/fmt/colors.ts";

packages/logger/mod.ts

@@ -0,0 +1,102 @@
+import { bold, cyan, gray, italic, red, yellow } from "./deps.ts";
+
+export enum LogLevels {
+  Debug,
+  Info,
+  Warn,
+  Error,
+  Fatal,
+}
+
+const prefixes = new Map<LogLevels, string>([
+  [LogLevels.Debug, "DEBUG"],
+  [LogLevels.Info, "INFO"],
+  [LogLevels.Warn, "WARN"],
+  [LogLevels.Error, "ERROR"],
+  [LogLevels.Fatal, "FATAL"],
+]);
+
+const noColor: (str: string) => string = (msg) => msg;
+const colorFunctions = new Map<LogLevels, (str: string) => string>([
+  [LogLevels.Debug, gray],
+  [LogLevels.Info, cyan],
+  [LogLevels.Warn, yellow],
+  [LogLevels.Error, (str: string) => red(str)],
+  [LogLevels.Fatal, (str: string) => red(bold(italic(str)))],
+]);
+
+export function logger({
+  logLevel = LogLevels.Info,
+  name,
+}: {
+  logLevel?: LogLevels;
+  name?: string;
+} = {}) {
+  function log(level: LogLevels, ...args: any[]) {
+    if (level < logLevel) return;
+
+    let color = colorFunctions.get(level);
+    if (!color) color = noColor;
+
+    const date = new Date();
+    const log = [
+      `[${date.toLocaleDateString()} ${date.toLocaleTimeString()}]`,
+      color(prefixes.get(level) || "DEBUG"),
+      name ? `${name} >` : ">",
+      ...args,
+    ];
+
+    switch (level) {
+      case LogLevels.Debug:
+        return console.debug(...log);
+      case LogLevels.Info:
+        return console.info(...log);
+      case LogLevels.Warn:
+        return console.warn(...log);
+      case LogLevels.Error:
+        return console.error(...log);
+      case LogLevels.Fatal:
+        return console.error(...log);
+      default:
+        return console.log(...log);
+    }
+  }
+
+  function setLevel(level: LogLevels) {
+    logLevel = level;
+  }
+
+  function debug(...args: any[]) {
+    log(LogLevels.Debug, ...args);
+  }
+
+  function info(...args: any[]) {
+    log(LogLevels.Info, ...args);
+  }
+
+  function warn(...args: any[]) {
+    log(LogLevels.Warn, ...args);
+  }
+
+  function error(...args: any[]) {
+    log(LogLevels.Error, ...args);
+  }
+
+  function fatal(...args: any[]) {
+    log(LogLevels.Fatal, ...args);
+  }
+
+  return {
+    log,
+    setLevel,
+    debug,
+    info,
+    warn,
+    error,
+    fatal,
+  };
+}
+
+export const log = logger({ name: "Main" });
+export const createLogger = logger;
+export default log;