使用@angular/localize 本地化后如何'ng serve' 原始应用程序？

Question

我正在玩 Angular 的本地化 @angular/localize，在配置它以将应用程序翻译成不同的语言后 我尝试使用 'ng serve' 但我得到这个错误：

An unhandled exception occurred: The development server only supports localizing a single locale per build.

我基于此尝试使用不同的端口：How to serve different Angular locales during development using ng serve? 但无济于事。

对于翻译版本，使用 'ng serve --configuration=fr' 一切正常 。构建 work 正确地在 dist/App 文件夹中创建 'en-US' 和 'fr' 文件夹。

当我删除开发服务器中的 inlineLocales.size 条件时，一切正常，没有错误：

if (i18n.shouldInline && tsConfig.options.enableIvy !== false) {
    //if (i18n.inlineLocales.size > 1) {
    //    throw new Error('The development server only supports localizing a single locale per build');
    //}
    await setupLocalize(i18n, browserOptions, webpackConfig);
}

所以这可能是 Angular-devkit 问题。

我试图通过创建新的“en-US”语言环境来解决这个问题，但遇到了这个错误：

An unhandled exception occurred: An i18n locale ('en-US') cannot both be a source locale and provide a translation.

在仅使用 'en' 而不是 'en-US' 并使用 <source> 和 <target> 翻译创建新的翻译文件后，它可以使用 'ng serve --configuration=en' 但这看起来像是一个错误的解决方案。

这是我的 angular.json:

{
  "$schema": "./node_modules/@angular/cli/lib/config/schema.json",
  "version": 1,
  "newProjectRoot": "projects",
  "projects": {
    "App": {
      "projectType": "application",
      "i18n": {
        "sourceLocale": "en-US",
        "locales": {
          "fr": "src/locale/messages.fr.xlf"
        }
      },
      "schematics": {
        "@schematics/angular:component": {
          "style": "scss"
        },
        "@schematics/angular:application": {
          "strict": true
        }
      },
      "root": "",
      "sourceRoot": "src",
      "prefix": "app",
      "architect": {
        "build": {
          "builder": "@angular-devkit/build-angular:browser",
          "options": {
            "localize": true,
            "outputPath": "dist/App",
            "index": "src/index.html",
            "main": "src/main.ts",
            "polyfills": "src/polyfills.ts",
            "tsConfig": "tsconfig.app.json",
            "aot": true,
            "assets": ["src/favicon.ico", "src/assets"],
            "styles": ["src/styles.scss"],
            "scripts": []
          },
          "configurations": {
            "production": {
              "fileReplacements": [
                {
                  "replace": "src/environments/environment.ts",
                  "with": "src/environments/environment.prod.ts"
                }
              ],
              "optimization": true,
              "outputHashing": "all",
              "sourceMap": false,
              "extractCss": true,
              "namedChunks": false,
              "extractLicenses": true,
              "vendorChunk": false,
              "buildOptimizer": true,
              "budgets": [
                {
                  "type": "initial",
                  "maximumWarning": "500kb",
                  "maximumError": "1mb"
                },
                {
                  "type": "anyComponentStyle",
                  "maximumWarning": "2kb",
                  "maximumError": "4kb"
                }
              ]
            },
            "fr": {
              "localize": ["fr"]
            }
          }
        },
        "serve": {
          "builder": "@angular-devkit/build-angular:dev-server",
          "options": {
            "browserTarget": "App:build"
          },
          "configurations": {
            "production": {
              "browserTarget": "App:build:production"
            },
            "fr": {
              "browserTarget": "App:build:fr"
            }
          }
        },
        "extract-i18n": {
          "builder": "@angular-devkit/build-angular:extract-i18n",
          "options": {
            "browserTarget": "App:build"
          }
        },
        "test": {
          "builder": "@angular-devkit/build-angular:karma",
          "options": {
            "main": "src/test.ts",
            "polyfills": "src/polyfills.ts",
            "tsConfig": "tsconfig.spec.json",
            "karmaConfig": "karma.conf.js",
            "assets": ["src/favicon.ico", "src/assets"],
            "styles": ["src/styles.scss"],
            "scripts": []
          }
        },
        "lint": {
          "builder": "@angular-devkit/build-angular:tslint",
          "options": {
            "tsConfig": [
              "tsconfig.app.json",
              "tsconfig.spec.json",
              "e2e/tsconfig.json"
            ],
            "exclude": ["**/node_modules/**"]
          }
        },
        "e2e": {
          "builder": "@angular-devkit/build-angular:protractor",
          "options": {
            "protractorConfig": "e2e/protractor.conf.js",
            "devServerTarget": "App:serve"
          },
          "configurations": {
            "production": {
              "devServerTarget": "App:serve:production"
            }
          }
        }
      }
    }
  },
  "defaultProject": "App"
}

如何重现：该应用程序是使用 Angular CLI 10.0.0 和 Angular 10.0.1 生成的，然后通过 'ng add @angular/localize' 添加 @angular/localize。在app.component.html是单身<h1 i18n="@@app.h1">Hello</h1>。使用上面的angular.json。

Answer 1

在“选项”中，您必须将“本地化”设置为 false：

"architect": {
    "build": {
      "builder": "@angular-devkit/build-angular:browser",
      "options": {
        "localize": false,

并再次构建：

ng build

Answer 2

Set "localize": false in your example in your answer is equal to "localize": ["en"],

所以...

虽然接受的答案有效，但它不是正确的答案，因为您不应该让您的默认行为成为所有语言的一个编译。

你可以做什么来构建语言并调用它，所以最终你将拥有：

     "architect": {
    "build": {
      "builder": "@angular-devkit/build-angular:browser",
      ....
      "configurations": {
        .......
        "fr": {
          "localize": ["fr"]
        },
        "en": {
          "localize": ["en"]
        },
      }
    },

"serve": {
        ...
        ...
        "fr": {
          "browserTarget": "App:build:fr"
        },
        "en": {
          "browserTarget": "App:build:en"
        }

      }
    },

然后当您执行 ng serve --configuration=en 它会起作用，并且您不需要将默认构建选项更改为所有其他构建。

Answer 3

无需设置localize: false。这里缺少的是在 angular.json 中为 sourceLocale 语言添加几个条目，在本例中为 en-US（即使您没有 [=18] 的专用翻译文件=]).

前往 angular.json，留下 configurations 对象：

...
"fr": {
  "localize": ["fr"]
},
"en-US": {
  "localize": ["en-US"] << or whatever your sourceLocale is
},
...

然后：

"fr": {
  "browserTarget": "App:build:fr"
},
"en-US": {
  "browserTarget": "App:build:en-US" << or whatever your sourceLocale is
},

现在您应该能够：

ng serve --configuration=en-US

或

ng serve --configuration=fr

您可以通过编辑 package.json scripts 来简化，例如：

"scripts": {
  "ng": "ng",
  "start": "ng serve --configuration=en-US",
  "start:fr": "ng serve --configuration=fr",
...

现在，npm run start 将提供英语版本的应用程序，npm run start:fr 将提供法语版本的应用程序。

使用@angular/localize 本地化后如何'ng serve' 原始应用程序？

How do I 'ng serve' the original app after localizing it with @angular/localize?

angular-i18n

angular

angular-localize