logger実装

src/logger.ts

@@ -0,0 +1,46 @@
+import chalk from 'chalk';
+
+class Logger {
+
+    private tags: string[] = [];
+
+    constructor() {
+        this.tags.push('default');
+    }
+
+    setTags(tags: string[]) {
+        this.tags = tags;
+    }
+
+    setTag(tag: string) {
+        this.tags = [tag];
+    }
+
+    getChild(tag: string) {
+        const child = new Logger();
+        child.setTags([...this.tags, tag]);
+        return child;
+    }
+
+    private tagString() {
+        return this.tags.join('/');
+    }
+
+    info = (message: string) => {
+        console.log(chalk.blue('[INFO ]') + ' ' + this.tagString() + ':\t' + message);
+    }
+
+    warn = (message: string) => {
+        console.log(chalk.yellow('[WARN ]') + ' ' + this.tagString() + ':\t' + message);
+    }
+
+    error = (message: string) => {
+        console.log(chalk.red('[ERROR]') + ' ' + this.tagString() + ':\t' + message);
+    }
+
+    debug = (message: string) => {
+        console.log(chalk.gray('[DEBUG]' + ' ' + this.tagString() + ':\t' + message));
+    }
+}
+
+export default Logger;