ctorParameters.map 不是 angular2-mdl 中的函数

ctorParameters.map is not a function in angular2-mdl

我正在尝试将 angular2-mdl 与 angular-cli 一起使用。我在 app.module.ts.

中导入了 MdlModule

当我尝试使用 <mdl-textfield type="text" label="Text..." floating-label></mdl-textfield> 时,出现错误:

ctorParameters.map is not a function in angular2-mdl

我不知道我应该做什么。

这是我的 angular-cli.json.

  "dependencies": {
    "@angular/common": "~2.0.0",
    "@angular/compiler": "~2.0.0",
    "@angular/core": "~2.0.0",
    "@angular/forms": "~2.0.0",
    "@angular/http": "~2.0.0",
    "@angular/material": "^2.0.0-alpha.9-3",
    "@angular/platform-browser": "~2.0.0",
    "@angular/platform-browser-dynamic": "~2.0.0",
    "@angular/router": "~3.0.0",
    "@types/moment-timezone": "^0.2.33",
    "angular-cli": "^1.0.0-beta.17",
    "angular2-jwt": "^0.1.25",
    "angular2-mdl": "^2.9.0",
    "bootstrap": "^3.3.7",
    "bourbon": "^4.2.7",
    "core-js": "^2.4.1",
    "font-awesome": "^4.7.0",
    "hammerjs": "^2.0.8",
    "moment": "^2.17.1",
    "moment-timezone": "^0.5.10",
    "node-sass": "^3.13.0",
    "primeng": "^1.1.0",
    "rxjs": "5.0.0-beta.12",
    "ts-helpers": "^1.1.1",
    "zone.js": "^0.6.23"
  },
  "devDependencies": {
    "@types/jasmine": "^2.2.30",
    "@types/moment": "^2.13.0",
    "@types/moment-timezone": "^0.2.33",
    "@types/node": "^6.0.42",
    "angular-cli": "1.0.0-beta.17",
    "bootstrap-sass": "^3.3.7",
    "codelyzer": "~0.0.26",
    "jasmine-core": "2.4.1",
    "jasmine-spec-reporter": "2.5.0",
    "karma": "1.2.0",
    "karma-chrome-launcher": "^2.0.0",
    "karma-cli": "^1.0.1",
    "karma-jasmine": "^1.0.2",
    "karma-remap-istanbul": "^0.2.1",
    "protractor": "4.0.9",
    "ts-node": "1.2.1",
    "tslint": "3.13.0",
    "typescript": "2.0.2"
  }

我遇到了同样的问题(使用另一个插件)并通过将 angular 升级到最新版本 (2.4.1) 解决了这个问题。

编辑:完整 packages.json

同时检查您的 Typescript 版本。由于编译时不断出现问题,我不得不停止使用 Angular-cli。我换成了 webpack。

{
  "name": "web-app",
  "version": "1.0.0",
  "scripts": {
    ....
  },
  "license": "UNLICENSED",
  "dependencies": {
    "@angular/common": "~2.4.1",
    "@angular/compiler": "~2.4.1",
    "@angular/compiler-cli": "^2.4.1",
    "@angular/core": "~2.4.1",
    "@angular/forms": "~2.4.1",
    "@angular/http": "~2.4.1",
    "@angular/platform-browser": "~2.4.1",
    "@angular/platform-browser-dynamic": "~2.4.1",
    "@angular/platform-server": "^2.4.1",
    "@angular/router": "~3.4.1",
    "codelyzer": "^1.0.0-beta.3",
    "concurrently": "^3.1.0",
    "core-js": "^2.4.1",
    "reflect-metadata": "^0.1.8",
    "rxjs": "5.0.1",
    "tslint": "^4.2.0",
    "typescript": "^2.1.4",
    "typings": "^2.1.0",
    "zone.js": "^0.7.4",
    ...
  },
  "devDependencies": {
    "@angular/compiler-cli": "^2.4.1",
    "@ngtools/webpack": "^1.2.1",
    "extract-text-webpack-plugin": "^1.0.1",
    "ts-loader": "^1.3.3"
  }
}

看来这个问题需要澄清一下:

为什么我们会看到此错误消息?

如果 angular2 的组件库想要与 AOT 兼容,则需要使用 ngc (@angular/compiler-cli) 进行编译。这将为每个组件生成 *.metadata.json 文件。此外,这会为每个组件生成 js 文件,其中包含有关构造函数参数的信息。如果包是使用 @angular/compiler-cli < 2.3.0 的版本编译的,这将是(例如):

MdlBadgeDirective.ctorParameters = [
        { type: ElementRef, },
        { type: Renderer, },
];

如果包是用较新的版本编译的,这将是:

MdlBadgeDirective.ctorParameters = function () { return [
        { type: ElementRef, },
        { type: Renderer, },
]; };

如您所见,新版本是一个函数,不再是一个数组。所以错误

ctorParameters.map is not a function

有道理。因为 map 是数组的成员而不是函数的成员。

如何解决这个问题?:

  1. 您可以将 angular 版本(或试图编译您的 angular2 代码的软件包)更新为新的编译器输出格式。例如。至少@angular/*@2.3.1。 (如果您正在使用 angular-cli,您应该将您的项目升级到 angular-cli@1.0.0-beta.24)

  2. 您可以将正在使用的包锁定为与旧编译器输出格式匹配的版本。对于 angular2-mdl,这是版本 2.7.0。您可以在此处找到此信息:https://github.com/mseemann/angular2-mdl#remarks.

是否可以将使用较旧的 angular-compiler-cli 编译的软件包与较新的 angular-compiler-cli 版本一起使用? (例如,你在 angular 2.4.1 并且想使用 angular2-mdl@2.7.0)是的!这个方向是向后兼容的。参见 https://github.com/angular/angular/blob/master/modules/%40angular/core/src/reflection/reflection_capabilities.ts#L80

我通过查看来自 ng build 的错误报告找出了这个问题的原因:

npm WARN @angular/platform-server@2.4.4 requires a peer of @angular/core@2.4.4 but none was installed.

这让我意识到我的一个软件包预计 Angular 是 v2.4.4,但我使用的是 v2.0.1。我更新了我的 package.json 以将两个包都设置为我的核心版本,如下所示:

"dependencies": {
    "@angular/core": "2.0.1",
    "@angular/platform-server": "2.0.1",
}

您的问题可能与@angular/platform-server 无关,但我希望这有助于调试它

我遇到了同样的问题。这是因为我正在使用

"ng2-bootstrap": "^1.3.1",

"@angular/common": "2.0.1",

"@angular/compiler": "2.0.1",

"@angular/core": "2.0.1",

"@angular/platform-browser": "2.0.1",

然后我将 angular 依赖项更新为

"@angular/common": "2.2.3",

"@angular/compiler": "2.2.3",

"@angular/core": "2.2.3",

"@angular/platform-browser": "2.2.3",

它运行良好。

升级到 angular 2.4.6 后工作正常

 "dependencies": {
    "@angular/common": "2.4.6",
    "@angular/compiler": "2.4.6",
    "@angular/compiler-cli":"2.4.6",
    "@angular/core": "^2.4.6",
    "@angular/forms": "2.4.6",
    "@angular/http": "2.4.6",
    "@angular/platform-browser":"2.4.6",
    "@angular/platform-browser-dynamic":"2.4.6",
    "@angular/platform-server":"2.4.6",
    "@ionic/storage": "1.1.6",
    "@types/jasmine": "2.5.37",
    "@types/moment-timezone": "^0.2.34",
    "@types/request": "0.0.33",
    "angular-qrcode": "^6.2.1",
    "angular2-fullcalendar": "^1.1.1",
    "angular2-qrcode": "^2.0.0",
    "angularfire2": "2.0.0-beta.6",
    "ionic-angular": "^2.0.0-201702062042",
    "ionic-native": "2.2.3",
    "ionicons": "3.0.0",
    "moment": "^2.17.0",
    "ng2-signalr": "^2.0.3",
    "rxjs": "5.1.0",
    "zone.js": "0.7.6"
  },

我试图重新构建一个相对 "ancient" Angular2 的应用程序(使用版本 2.0.0)和 ng-bootstrap。成功构建项目后(即没有错误)我在主页上收到此错误。

在尝试了除了扼杀自己之外的所有方法之后,我卸载了所有 npm 模块并尝试执行 npm install 并注意到 ng-bootsrap 安装了一个与 Angulare 2.0 不兼容的版本.0(ng-bootstrap 的 package.json 设置被设为 ~1.1.3)。安装了最新的 1.1.7 需要 Angular 2.4.x.

尝试升级到 2.4.x 证明是一项巨大的努力,所以我将 ng-bootstrap 设置为 1.1.4。

TL;DR:我正在使用 angular 2.0.0 和 ng-bootstrap。不想升级到 2.4.x 所以我将 ng-bootstrap 版本硬编码到 1.1.4,问题就消失了。