英文:
How to include .env file in tsconfig.json for transpiler
问题
我有一个类似这样的typescript项目结构：```bash根目录/应用/index.ts配置/.env.dev
在index.ts中，我想使用dotenv.config()来配置指向.env.dev文件的路径：
import * as dotenv from 'dotenv';import path from 'path';// 设置 __dirname，等等import { fileURLToPath } from 'url';const __filename = fileURLToPath(import.meta.url);const __dirname = path.dirname(__filename);// 手动定义 NODE_ENV 为 NODE_ENV=devconst dotenvPath = path.join(__dirname, '../', `config/.env.${process.env.NODE_ENV}`);dotenv.config({path: dotenvPath,});console.log(`dotenvPath: ${dotenvPath}`)console.log(`${process.env.SOMEVAR_INSIDE_ENVDEV_FILE}`) // <-- undefined
然而，当我尝试使用 process.env.SOMEVAR_INSIDE_ENVDEV_FILE 时，它是未定义的。
console.log(`dotenvPath: ${dotenvPath}`) 输出：
dotenvPath: C:\Users\myuser\path\to\project\.build\config\.env.dev
然而，.build\config\ 似乎不存在。这是我的 tsconfig.json：
{"compilerOptions": {"target": "esnext","module": "esnext","strict": true,"esModuleInterop": true,"moduleResolution": "node","forceConsistentCasingInFileNames": true,"outDir": "./build","rootDir": "./app"},"exclude": ["node_modules"]}
在 "exclude" 标签之后添加以下标签：
"include": ["./config/*",],
会给我带来一个我在其中找不到太多信息的奇怪错误：Error: [{"messageText":"在配置文件 'tsconfig.json' 中找不到输入。指定的 'include' 路径为 '[\"./config/*\"]'，而 'exclude' 路径为 '[\"node_modules\"]'。","category":1,"code":18003}]。我找到的唯一资源是这里，但在我这种情况下并没有太多意义，因为我认为我所做的一切都没有错。
我如何强制typescript将我的 ./config/.env.dev 文件包含在转译过程中，以便我可以在运行时访问它？
<details><summary>英文:</summary>I have a typescript project structure like this:```bashroot/app/index.tsconfig/.env.dev
Inside index.ts, I want to call dotenv.config() with the path pointing to the .env.dev file to configure it:
import * as dotenv from 'dotenv';import path from 'path';// set __dirname, yada yada yadaimport { fileURLToPath } from 'url';const __filename = fileURLToPath(import.meta.url);const __dirname = path.dirname(__filename);// NODE_ENV is defined manually to NODE_ENV=devconst dotenvPath = path.join(__dirname, '../', `config/.env.${process.env.NODE_ENV}`);dotenv.config({path: dotenvPath,});console.log(`dotenvPath: ${dotenvPath}`)console.log(`${process.env.SOMEVAR_INSIDE_ENVDEV_FILE}`) // <-- undefined
However, when I try to use process.env.SOMEVAR_INSIDE_ENVDEV_FILE, it is undefined.
The line console.log(`dotenvPath: ${dotenvPath}`) outputs:
dotenvPath: C:\Users\myuser\path\to\project\.build\config\.env.dev
However, .build\config\ seems to not exist. This is my tsconfig.json:
{"compilerOptions": {"target": "esnext","module": "esnext","strict": true,"esModuleInterop": true,"moduleResolution": "node","forceConsistentCasingInFileNames": true,"outDir": "./build","rootDir": "./app"},"exclude": ["node_modules"]}
Adding the following tag after "exclude" tag:
"include": ["./config/*",],
gives me a weird error that I could not find much about: Error: [{"messageText":"No inputs were found in config file 'tsconfig.json'. Specified 'include' paths were '[\"./config/*\"]' and 'exclude' paths were '[\"node_modules\"]'.","category":1,"code":18003}]. Only resource I found was this, but it doesn't make much sense in my case, because I find nothing wrong with what I did.
How can I force typescript to include my ./config/.env.dev file into the transpilation process, so that I can access it during runtime?
答案1
得分: 1
Typescript 只会转译 Typescript 文件和可能的 Javascript 文件。如果你只想编写一个脚本，以在文件发生更改时复制它，那么采用像 Make 这样的构建工具似乎是一个不错的选择。
英文:
Typescript only transpiles Typescript files and potentially Javascript files. If you just want to write a script that copies a file if it has changed, this seems like a good problem for adopting a build tool like Make.
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