add support for dotenv

Author: hiro5id

package-lock.json

@@ -27,7 +27,7 @@
     "stack-traces"
   ],
   "scripts": {
-    "prebuild": "cti create ./src && rimraf **/index.ts.bak",
+    "prebuild": "cti --withoutbackup create ./src && rimraf **/index.ts.bak",
     "build": "npm run format:prettier && npm run lint && tsc -sourcemap",
     "test": "mocha \"dist/test/**/*.js\"",
     "build:watch": "tsc -w",
@@ -48,6 +48,7 @@
   "dependencies": {
     "app-root-path": "^3.0.0",
     "callsites": "^3.1.0",
+    "dotenv": "^8.2.0",
     "json-stringify-safe": "^5.0.1",
     "source-map-support": "^0.5.19",
     "winston": "^3.3.3"

package.json

@@ -0,0 +1,32 @@
+import fs from 'fs';
+import path from 'path';
+
+export class Env {
+  private findOptionalEnvFile(startPath: string): string | null {
+    if (!fs.existsSync(startPath) || startPath === '/') {
+      return null;
+    }
+
+    const files = fs.readdirSync(startPath);
+    // tslint:disable-next-line:prefer-for-of
+    for (let i = 0; i < files.length; i++) {
+      const filename = path.join(startPath, files[i]);
+      const stat = fs.lstatSync(filename);
+      if (!stat.isDirectory()) {
+        if (filename.toLowerCase().endsWith('.env')) {
+          return filename;
+        }
+      }
+    }
+    return this.findOptionalEnvFile(path.resolve(startPath, '../'));
+  }
+
+  public loadDotEnv() {
+    const optionalEnvFile = this.findOptionalEnvFile(__dirname);
+    if (optionalEnvFile != null && optionalEnvFile.length < 0) {
+      require('dotenv').config({ path: optionalEnvFile });
+    } else {
+      require('dotenv').config();
+    }
+  }
+}

src/env/env.ts

@@ -0,0 +1,3 @@
+// created from 'create-ts-index'
+
+export * from './env';

src/env/index.ts

@@ -1,5 +1,6 @@
 // created from 'create-ts-index'
 
+export * from './env';
 export * from './capture-nested-stack-trace';
 export * from './error-with-context';
 export * from './format-stack-trace';

src/index.ts

@@ -10,6 +10,7 @@ import { getCallingFilename } from './get-calling-filename';
 import { safeObjectAssign } from './safe-object-assign';
 import { sortObject } from './sort-object';
 import { ToOneLine } from './to-one-line';
+import { Env } from './env';
 
 // tslint:disable-next-line:no-var-requires
 require('source-map-support').install({
@@ -247,6 +248,9 @@ function ifEverythingFailsLogger(functionName: string, err: Error) {
 let logParams!: { logLevel: LOG_LEVEL; debugString: boolean };
 
 export function LoggerAdaptToConsole(options?: { logLevel?: LOG_LEVEL; debugString?: boolean }) {
+  const env = new Env();
+  env.loadDotEnv();
+
   const defaultOptions = {
     logLevel: LOG_LEVEL.info,
     debugString: false,