SassError:找不到要导入的样式表。 @使用'~@angular/material'作为垫子;

问题描述 投票:0回答:9

我使用 CLI 创建了一个 Angular 项目。我正在使用 SCSS,并且我将 Angular Material 包含在自定义主题 iirc 中。我添加了几个虚拟组件,应用程序仍然构建得很好。然后我需要使用 Angular Material 来设计我的组件的样式。为此,我将

@use '~@angular/material' as mat;
添加到
style.scss
文件的第一行。一旦我这样做了,该应用程序将不再构建。它总是抛出以下错误:

ERROR in ./src/styles.scss (./node_modules/css-loader/dist/cjs.js??ref--13-1!./node_modules/postcss-loader/src??embedded!./node_modules/resolve-url-loader??ref--13-3!./node_modules/sass-loader/dist/cjs.js??ref--13-4!./src/styles.scss)
Module build failed (from ./node_modules/sass-loader/dist/cjs.js):
SassError: Can't find stylesheet to import.
  ╷
1 │ @use '~@angular/material' as mat;
  │ ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  ╵
  src/styles.scss 1:1  root stylesheet

我不知道我做错了什么;我的印象是,以这种方式导入 Angular Material 就可以了。我是不是做错了什么?

这是我的整个

style.scss
文件(如果有帮助的话):

@use '~@angular/material' as mat;

// Custom Theming for Angular Material
// For more information: https://material.angular.io/guide/theming
@import '~@angular/material/theming';
// Plus imports for other components in your app.

// Include the common styles for Angular Material. We include this here so that you only
// have to load a single css file for Angular Material in your app.
// Be sure that you only ever include this mixin once!
@include mat-core();

// For each palette, you can optionally specify a default, lighter, and darker hue.
$aphrodite-primary: mat-palette($mat-indigo);
$aphrodite-accent: mat-palette($mat-pink, A200, A100, A400);

// The warn palette is optional (defaults to red).
$aphrodite-warn: mat-palette($mat-red);

// Create the theme object. A theme consists of configurations for individual
// theming systems such as "color" or "typography".
$aphrodite-theme: mat-light-theme((
  color: (
    primary: $aphrodite-primary,
    accent: $aphrodite-accent,
    warn: $aphrodite-warn,
  )
));

// Include theme styles for core and each component used in your app.
// Alternatively, you can import and @include the theme mixins for each component
// that you are using.
@include angular-material-theme($aphrodite-theme);

/* You can add global styles to this file, and also import other style files */

@import '~normalize.css';
@import 'sassVars.scss';

html, body { height: 100%; }

html{
  background: $nullGray;
  min-width: 400px;
}

body {
  font-family: Roboto, "Helvetica Neue", sans-serif;
  background: $canvas;
  max-width: $bodyWidth;
  margin: auto;
  height: 100%;
  @include elevation(16);
}

这是我的

angular.json
文件:

{
  "$schema": "./node_modules/@angular/cli/lib/config/schema.json",
  "version": 1,
  "newProjectRoot": "projects",
  "projects": {
    "myapp": {
      "projectType": "application",
      "schematics": {
        "@schematics/angular:component": {
          "style": "scss"
        }
      },
      "root": "",
      "sourceRoot": "src",
      "prefix": "app",
      "architect": {
        "build": {
          "builder": "@angular-devkit/build-angular:browser",
          "options": {
            "baseHref" : "/app/",
            "deployUrl": "/app/",
            "outputPath": "dist/myapp",
            "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": "2mb",
                  "maximumError": "5mb"
                },
                {
                  "type": "anyComponentStyle",
                  "maximumWarning": "6kb",
                  "maximumError": "10kb"
                }
              ]
            }
          }
        },
        "serve": {
          "builder": "@angular-devkit/build-angular:dev-server",
          "options": {
            "browserTarget": "myapp:build"
          },
          "configurations": {
            "production": {
              "browserTarget": "myapp:build:production"
            }
          }
        },
        "extract-i18n": {
          "builder": "@angular-devkit/build-angular:extract-i18n",
          "options": {
            "browserTarget": "myapp: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": "myapp:serve"
          },
          "configurations": {
            "production": {
              "devServerTarget": "myapp:serve:production"
            }
          }
        }
      }
    }
  },
  "defaultProject": "myapp",
  "cli": {
    "analytics": "0ded4b78-d900-44ea-8ad2-b5cbba677e06"
  }
}
angular sass angular-material angular-material2
9个回答
122
投票

对于 Angular 13,尝试从路径中删除波浪号 (

~
),因此导入如下:

@use '@angular/material' as mat;

它就像一个魅力。


32
投票

与 Google API 一样,Angular Material 版本 11 和版本 12 之间存在混淆。

[简答]

在 SCSS 中,他们似乎不推荐使用

@import
,而倾向于使用
@use
语法。 Angular Material 似乎在 v11->12 左右实施了此更改
(我也是新手。这是我最好的猜测)。

观看此 YouTube 视频,大致了解其中的差异。

Google Angular 成为 Stack Overflow 上 2020 年最可怕的框架是有原因的 :) 所以这取决于您使用的 Angular Material 版本

[长答案]
在 Angular Material v11 中,他们似乎使用

@import
语法,而在 v12 中,他们似乎更喜欢
@use
语法。

因此,您似乎正在尝试使用根据 Angular Material v11 设计的教程或主题,其中使用

@import
语法,并将其与 Angular Material v12 的
@use
语法混合。两者最大的区别在于
@use
语法导致 SCSS 带有前缀,因此函数名称略有变化,例如

//angular material v11 which uses @import syntax 
@import '~@angular/material/theming';//notice that the file imported is also different
@include mat-core();

$candy-app-primary: mat-palette($mat-indigo); //notice that functions not Namespaced

$candy-app-accent:  mat-palette($mat-pink, A200, A100, A400);

虽然使用 Angular Material v12 的同一示例使用

@use
语法

@use '~@angular/material' as mat; 

$candy-app-primary: mat.define-palette(mat.$indigo-palette, 500); //notice that functions are prefixed with Namespace mat. This is a feature of the scss @use  directive
$candy-app-accent: mat.define-palette(mat.$pink-palette, A200, A100, A400);

[我还没有找到一种方法来在两个版本中找到正确的函数名称。手动迁移主题并不简单,尤其是当您是新手时]

所以你可以看到,根据你使用的是 Material v11 还是 12,很容易丢失样式表。祝你好运


18
投票

我遇到了类似的问题,@darko99 帮助我发表了评论。如果我将

@use '@angular/material' as mat;
更改为
@use 'node_modules/@angular/material' as mat;
我将停止在终端中收到 SassError 。但是,除了在每个@use上添加
node_modules/
之外,我们还可以在architect/build/options下的
angular.json
中添加以下内容:

 "stylePreprocessorOptions": {
   "includePaths": [
     "node_modules/",
     ...
   ]
 }

12
投票

有类似的问题。这对我有帮助:

在此输入链接描述

在 Nx 或 Angular v15 中 - 删除“~”内容。


11
投票

显然,我一直在阅读适合我的版本的错误文档。上面的代码有两件事需要更改才能为我工作。

  1. 你不做

    @use '~@angular/material' as mat;
    。重要的行是
    @import '~@angular/material/theming';
    ,它已由 CLI 放入文件中。

  2. 不是

    @include elevation(16);
    ,是
    @include mat-elevation(16);


5
投票

试试这个方法:

@use '@angular/material' as mat;

没有 ~ 符号。

希望它对你有用


2
投票

@使用“node_modules/@angular/material”作为垫子;

上面的代码对我有用。 Node 版本是

14.16.0
,Angular
12.x
,IDE 是 Visual Studio。


1
投票

如果有人再次遇到此错误,以下内容对我有帮助:

我遇到了同样的问题,我删除了自定义角度主题,忘记从

angular.json
文件中删除路径样式,然后将
@use '~@angular/material' as mat;
更改为
@use '@angular/material' as mat;

在删除客户的样式路径后,我更新了角度材料。然后只需重置您使用的 VSCode,因为它有时不会自行刷新。


0
投票

弹出答案: npm install @costlydeveloper/ngx-awesome-popup

@import“@costlydeveloper/ngx-awesome-popup/styles/主题”;
工作 stle.scss

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