Initial commit

.gitignore

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+# compiled output
+/dist
+/node_modules
+
+# Logs
+logs
+*.log
+npm-debug.log*
+yarn-debug.log*
+yarn-error.log*
+lerna-debug.log*
+
+# OS
+.DS_Store
+
+# Tests
+/coverage
+/.nyc_output
+
+# IDEs and editors
+/.idea
+.project
+.classpath
+.c9/
+*.launch
+.settings/
+*.sublime-workspace
+*.iml
+# IDE - VSCode
+.vscode/*
+!.vscode/settings.json
+!.vscode/tasks.json
+!.vscode/launch.json
+!.vscode/extensions.json

package.json

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+{
+  "name": "@uspasojevic/logger",
+  "version": "1.0.0",
+  "description": "Basic logger",
+  "main": "dist/index.js",
+  "types": "dist/index.d.ts",
+  "scripts": {
+    "build": "tsc",
+    "test": "echo \"Error: no test specified\" && exit 1"
+  },
+  "repository": {
+    "type": "git",
+    "url": "git+https://github.com/uspasojevic96/logger.git"
+  },
+  "keywords": [
+    "logger",
+    "logging"
+  ],
+  "author": "Uros Spasojevic",
+  "license": "ISC",
+  "bugs": {
+    "url": "https://github.com/uspasojevic96/logger/issues"
+  },
+  "homepage": "https://github.com/uspasojevic96/logger#readme",
+  "devDependencies": {
+    "typescript": "^4.1.3"
+  },
+  "dependencies": {
+    "kleur": "^4.1.3"
+  }
+}

src/index.ts

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+export * from './logger';
+export * from './log-level';

src/log-level.ts

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+export enum LogLevel {
+    WARNING = 1,
+    ERROR = 2,
+    INFO = 0
+}

src/logger.ts

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+import {LogLevel} from "./log-level";
+import {cyan, red, white, yellow} from "kleur";
+
+export class Logger {
+    private logLevel: LogLevel = LogLevel.ERROR;
+
+    public log(level: LogLevel, tag: string, message: string): void {
+        switch(level) {
+            case LogLevel.ERROR:
+                this.logError(tag, message);
+                break;
+            case LogLevel.INFO:
+                this.logInfo(tag, message);
+                break;
+            case LogLevel.WARNING:
+                this.logWarning(tag, message);
+                break;
+            default:
+                break;
+        }
+    }
+
+    private generatePrefix(tag: string): string {
+        let date: any = new Date().toISOString().split('T');
+        date = `${date[0]} ${date[1].substring(0, date[1].length - 5)}`;
+
+        return `${cyan(tag)} : ${date} : `;
+    }
+
+    private logError(tag: string, message: string): void {
+        if (this.logLevel >= LogLevel.ERROR) {
+            const str = `${this.generatePrefix(tag)}${red('[ERROR]')} ${message}`;
+            console.log(str);
+        }
+    }
+
+    private logInfo(tag: string, message: string): void {
+        if (this.logLevel >= LogLevel.INFO) {
+            const str = `${this.generatePrefix(tag)}${white('[INFO]')} ${message}`;
+            console.log(str);
+        }
+    }
+
+    private logWarning(tag: string, message: string): void {
+        if (this.logLevel >= LogLevel.WARNING) {
+            const str = `${this.generatePrefix(tag)}${yellow('[WARNING]')} ${message}`;
+            console.log(str);
+        }
+    }
+}

tsconfig.json

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+{
+  "compilerOptions": {
+    "target": "es5",                          /* Specify ECMAScript target version: 'ES3' (default), 'ES5', 'ES2015', 'ES2016', 'ES2017', 'ES2018', 'ES2019', 'ES2020', or 'ESNEXT'. */
+    "module": "commonjs",                     /* Specify module code generation: 'none', 'commonjs', 'amd', 'system', 'umd', 'es2015', 'es2020', or 'ESNext'. */
+    "strict": true,                           /* Enable all strict type-checking options. */
+    "esModuleInterop": true,                  /* Enables emit interoperability between CommonJS and ES Modules via creation of namespace objects for all imports. Implies 'allowSyntheticDefaultImports'. */
+    "skipLibCheck": true,                     /* Skip type checking of declaration files. */
+    "rootDir": "src",
+    "outDir": "dist",
+    "forceConsistentCasingInFileNames": true  /* Disallow inconsistently-cased references to the same file. */,
+    "sourceMap": true,
+    "declaration": true
+  },
+}