我是 Angular 的新手,刚刚尝试为google maps autocomplete创建我的第一个指令。但是我在directive.ts 文件中遇到了问题。在顶部,我有一个找不到的要求,因此无法构建应用程序。
const google = require('@types/googlemaps');
错误消息说
src/app/_directives/google-places.directive.ts(2,16) 中的错误:错误 TS2580:找不到名称“需要”。您需要为节点安装类型定义吗?尝试
npm i @types/node
然后添加node
到 tsconfig.xml 中的类型字段。
所以我查看了我的 package.json 文件中的“@types/node”,我看到了。
"devDependencies": {
"@angular-devkit/build-angular": "~0.13.0",
"@angular/cli": "~7.3.9",
"@angular/compiler-cli": "~7.2.0",
"@angular/language-service": "~7.2.0",
"@fortawesome/fontawesome-pro": "^5.9.0",
"@types/jasmine": "~2.8.8",
"@types/jasminewd2": "~2.0.3",
"@types/node": "~8.9.4",
"codelyzer": "~4.5.0",
"jasmine-core": "~2.99.1",
"jasmine-spec-reporter": "~4.2.1",
"karma": "~4.0.0",
"karma-chrome-launcher": "~2.2.0",
"karma-coverage-istanbul-reporter": "~2.0.1",
"karma-jasmine": "~1.1.2",
"karma-jasmine-html-reporter": "^0.2.2",
"protractor": "~5.4.0",
"ts-node": "~7.0.0",
"tslint": "~5.11.0",
"typescript": "~3.2.2"
}
然后我查看了 tsconfig.json 的类型,没有看到,所以我添加了它。
{
"compileOnSave": false,
"compilerOptions": {
"baseUrl": "./",
"outDir": "./dist/out-tsc",
"sourceMap": true,
"declaration": false,
"module": "es2015",
"moduleResolution": "node",
"emitDecoratorMetadata": true,
"experimentalDecorators": true,
"importHelpers": true,
"target": "es5",
"typeRoots": [
"node_modules/@types"
],
"lib": [
"es2018",
"dom"
],
"types": [
"node"
]
}
}
然后我进行了重建,但仍然找不到“要求”,因此构建失败。
只是为了获得更多信息,这里是指令文件。Intellisense 建议我将“要求”转换为导入,所以我这样做了,但这似乎也没有解决它。
import {
Directive,
OnInit,
ElementRef
} from '@angular/core';
const google = require('@types/googlemaps'); // error here with require
// import google = require('@types/googlemaps'); // doesn't work either
@Directive({
selector: '[appGooglePlaces]'
})
export class GooglePlacesDirective implements OnInit {
private element: HTMLInputElement;
constructor(private elRef: ElementRef) {
// elRef will get a reference to the element where
// the directive is placed
this.element = elRef.nativeElement;
}
ngOnInit() {
const autocomplete = new google.maps.places.Autocomplete(this.element);
}
}