javascript - Jest 路徑映射錯誤：無法找到模組 xyz，映射為：abc

我嘗試使用 jest（實際上是 ts-jest）搭配路徑映射。不幸的是，它報錯如下：

• Test suite failed to run

    Configuration error:
    
    Could not locate module @app/env.local.json mapped as:
    ./$1.
    
    Please check your configuration for these entries:
    {
      "moduleNameMapper": {
        "/^@app\/(.*)$/": "./$1"
      },
      "resolver": undefined
    }

      13 |
      14 | // Utils / Types / Api
    > 15 | import config from "@app/env.local.json"
         | ^
      16 |
      17 | const URI_TO_DATABASE = "mongodb://localhost:27017/" + config.DATABASE_NAME
      18 |

      at createNoMappedModuleFoundError (node_modules/jest-resolve/build/resolver.js:577:17)
      at Object.<anonymous> (database/database.ts:15:1)

ReferenceError: You are trying to `import` a file after the Jest environment has been torn down. From __tests__/someTest.test.ts.

我的 jest 配置應該已正確配置：

const { pathsToModuleNameMapper } = require("ts-jest/utils")
const { compilerOptions } = require("./tsconfig.json")

module.exports = {
    moduleNameMapper: pathsToModuleNameMapper(compilerOptions.paths)
}

這是我的 tsconfig：

{
    "compilerOptions": {
        "target": "es5",
        "module": "commonjs",
        "strict": true,
        "esModuleInterop": true,
        "skipLibCheck": true,
        "forceConsistentCasingInFileNames": true,
        "resolveJsonModule": true,
        "rootDir": ".",
        "baseUrl": ".",
        "paths": {
            "@app/*": [
                "./*"
            ],
            "@api/*": [
                "api/*"
            ],
            "@database/*": [
                "database/*"
            ],
            "@pdf": [
                "pdf/index.ts"
            ],
            "@assets/*": [
                "assets/*"
            ],
            "@fonts": [
                "assets/fonts/fonts.ts"
            ],
            "@utils": [
                "utils/*"
            ],
            "@dbOperations": [
                "database/dbOperations"
            ]
        }
    },
    "include": [
        "**/*.ts",
        "jest.config.js"
    ],
    "exclude": [
        "node_modules"
    ]
}

我可以想像這個錯誤可能與我的專案資料夾結構和 ts 配置有關。

它將 @app/* 對應到 ./*（如錯誤訊息所示），我認為這是正確的。但不知何故，它無法找到環境配置。

我的專案資料夾結構是：

|./
|-jest.config.js
|-tsconfig.json
|-moreFiles.ts
|-/database/
|--database.ts <-- imports `@app/env.local.json` and gets called anywhere in chain by jest tests
|-/__tests__/
|--someTest.test.ts
|-env.local.json

對這個有什麼想法嗎？感謝你的幫忙，謝謝 :)

答案＃1

如本文所述，將 moduleDirectories: ['node_modules', './'] 添加到我的 jest 配置中將使其正常運行。我需要刪除所有以 @app/ 開頭的導入。相當奇怪，其他別名都能正常工作。