Angular 11 tsconfig 路徑別名無法識別

Question

我正在使用 Angular 11 並嘗試使用像import {smthg} from '@common'而不是import {smthg} from '../../../common'

但我總是在 IDEA 中遇到錯誤： TS2307: Cannot find module '@common' or its corresponding type declarations.

嘗試編譯 .ts 文件時，控制台出現同樣的錯誤（ ng serve ）

有趣的是，當我將/index添加到導入時，IDEA 停止了詛咒，但錯誤並沒有在控制台中消失

myAngularProject
│   package.json
│   tsconfig.json
│   tsconfig.app.json
│   angular.json    
│
└───src
    │   main.ts
    │   index.html
    │
    └───app
        │  
        └───common
        │
        └───features

tsconfig.json：

/* To learn more about this file see: https://angular.io/config/tsconfig. */
{
  "compileOnSave": false,
  "compilerOptions": {
    "baseUrl": "./src",
    "paths": {
      "@common/*": ["app/common/*"],
      "@features/*": ["app/features/*"],
      "@platform/*": ["app/platform/*"],
      "@env": ["environments/environment"]
    },
    "outDir": "./dist/out-tsc",
    "forceConsistentCasingInFileNames": true,
    "strict": true,
    "noImplicitReturns": true,
    "noFallthroughCasesInSwitch": true,
    "sourceMap": true,
    "declaration": false,
    "downlevelIteration": true,
    "experimentalDecorators": true,
    "moduleResolution": "node",
    "importHelpers": true,
    "target": "es2015",
    "module": "es2020",
    "lib": [
      "es2018",
      "dom"
    ]
  },
  "angularCompilerOptions": {
    "strictInjectionParameters": true,
    "strictInputAccessModifiers": true,
    "strictTemplates": true
  }
}

tsconfig.app.json：

{
  "extends": "./tsconfig.json",
  "compilerOptions": {
    "outDir": "./out-tsc/app",
    "types": ["node"]
  },
  "files": [
    "src/main.ts",
    "src/polyfills.ts"
  ],
  "include": [
    "src/**/*.d.ts"
  ]
}

想法錯誤：

控制台 tsc 錯誤：

版本：

Angular CLI: 11.0.7
Node: 14.2.0
OS: darwin x64

Angular: 11.0.9
... animations, common, compiler, compiler-cli, core, forms
... platform-browser, platform-browser-dynamic, router
Ivy Workspace: Yes

Package                         Version
---------------------------------------------------------
@angular-devkit/architect       0.1100.7
@angular-devkit/build-angular   0.1100.7
@angular-devkit/core            11.0.7
@angular-devkit/schematics      11.0.7
@angular/cli                    11.0.7
@schematics/angular             11.0.7
@schematics/update              0.1100.7
rxjs                            6.6.3
typescript                      4.0.5

Answer 1

所以事實證明，angular 引擎允許根據 tsconfig 中“路徑”中指定的內容為路徑創建別名。

但是為了能夠訪問模塊的子文件夾以及從模塊頂層的 index.ts 導出的內容，您需要像這樣指定“路徑”：

{
  ...
  "compilerOptions": {
    "baseUrl": "src",
    "paths": {
      "@common/*": ["app/common/*"],
      "@common": ["app/common/index.ts"]
    }
  ...
  }
}

Answer 2

我遇到過同樣的問題。 我試圖將使用 Angular 10 制作的項目遷移到 Angular 11，處理./src/app文件夾，但這不起作用...

但是在一個新項目中，我得到了路徑別名以這種方式工作：

• 更新您的 angular cli：

PS C:\Projects> npm uninstall --g @angular/cli
PS C:\Projects> npm i --g @angular/cli

• 創建一個新項目，將嚴格模式設置為true ：

PS C:\Projects> ng new <<name-project>>
PS C:\Projects> cd <<name-project>>

• 當 CLI 結束時，編輯tsconfig.app.json ，如下所示：

/* To learn more about this file see: https://angular.io/config/tsconfig. */
{
    "extends": "./tsconfig.json",
    "compilerOptions": {
        "outDir": "./out-tsc/app",
        "types": [],

        // ADD THIS ↓↓↓
        "baseUrl": "./",
        "paths": {
            "@tool/*": [ "src/app/tool/*" ],
            "@models/*": [ "src/app/models/*" ],
            "@services/*": [ "src/app/services/*" ],
            "@components/*": [ "src/app/components/*" ],
            "@interfaces/*": [ "src/app/interfaces/*" ]
        }
        // ADD THIS ↑↑↑
    },
    "files": [
        "src/main.ts",
        "src/polyfills.ts"
    ],
    "include": [
        "src/**/*.d.ts"
    ]
}

• ...和tsconfig.json如下：

/* To learn more about this file see: https://angular.io/config/tsconfig. */
{
    "compileOnSave": false,
    "compilerOptions": {
        "outDir": "./dist/out-tsc",
        "forceConsistentCasingInFileNames": true,
        "strict": true,
        "noImplicitReturns": true,
        "noFallthroughCasesInSwitch": true,
        "sourceMap": true,
        "declaration": false,
        "downlevelIteration": true,
        "experimentalDecorators": true,
        "moduleResolution": "node",
        "importHelpers": true,
        "target": "es2015",
        "module": "es2020",
        "lib": [
            "es2018",
            "dom"
        ],

        // ADD THIS ↓↓↓
        "baseUrl": "./",
        "paths": {
            "@tool/*": [ "src/app/tool/*" ],
            "@models/*": [ "src/app/models/*" ],
            "@services/*": [ "src/app/services/*" ],
            "@components/*": [ "src/app/components/*" ],
            "@interfaces/*": [ "src/app/interfaces/*" ]
        }
        // ADD THIS ↑↑↑
    },
    "angularCompilerOptions": {
        "enableI18nLegacyMessageIdFormat": false,
        "strictInjectionParameters": true,
        "strictInputAccessModifiers": true,
        "strictTemplates": true
    }
}

• ...最后，編輯tsconfig.spec.json如下：

/* To learn more about this file see: https://angular.io/config/tsconfig. */
{
    "extends": "./tsconfig.json",
    "compilerOptions": {
        "outDir": "./out-tsc/spec",
        "types": [
            "jasmine"
        ],
        "baseUrl": "./",
        "paths": {
            "@tool/*": [ "src/app/tool/*" ],
            "@models/*": [ "src/app/models/*" ],
            "@services/*": [ "src/app/services/*" ],
            "@components/*": [ "src/app/components/*" ],
            "@interfaces/*": [ "src/app/interfaces/*" ]
        }
    },
    "files": [
        "src/test.ts",
        "src/polyfills.ts"
    ],
    "include": [
        "src/**/*.spec.ts",
        "src/**/*.d.ts"
    ]
}

Answer 3

首先，您需要重新啟動代碼編輯器以確保您的 linter 沒有問題。

我有類似的問題，在我的情況下配置是正確的，雖然我當時不知道由於缺乏經驗，所以我繼續嘗試我能找到的不同解決方案。 事實證明，問題在於 linter 在 IDE 重新啟動之前無法看到配置更改（添加的路徑定義）。

Answer 4

較新版本不再支持路徑別名

但是您現在可以這樣做以直接導入相對於src目錄的文件

go 到您的tsconfig.json文件添加baseUrl為"."

"compilerOptions": {
    "baseUrl":".",
    ...

現在你可以直接導入相對於src目錄的東西

import Myfile from "src/myfile.js"

這對我有用！

Answer 5

這個在 Angular 13 中為我工作，不要錯過每個路徑值中的點(.) 。

"baseUrl": "./",
"paths": {
      "@app/*": [
        "./src/app/*"
      ],
      "@env/*": [
        "./src/environments/*"
      ]
    }

Answer 6

在我的情況下，路徑別名實際上是有效的，但我在文件夾中缺少 a.ts 文件，因此無法識別類型。 但同樣的錯誤：“找不到模塊 @app 或其相應的類型聲明”