Javascript typeError:无法分配给只读属性';tView';对象的';[对象对象]';在9.0.4中
我使用了angular 8并将其更新为angular 9 但当我运行项目时,它会在控制台中显示以下错误: 错误错误:未捕获(承诺中):TypeError:无法分配给对象“[object]”的只读属性“tView” TypeError:无法分配给对象“[object]”的只读属性“tView” 在getOrCreateTComponentView(core.js:7621) 在createRootComponentView(core.js:18895) 在 这是my package.json:Javascript typeError:无法分配给只读属性';tView';对象的';[对象对象]';在9.0.4中,javascript,angular,typescript,Javascript,Angular,Typescript,我使用了angular 8并将其更新为angular 9 但当我运行项目时,它会在控制台中显示以下错误: 错误错误:未捕获(承诺中):TypeError:无法分配给对象“[object]”的只读属性“tView” TypeError:无法分配给对象“[object]”的只读属性“tView” 在getOrCreateTComponentView(core.js:7621) 在createRootComponentView(core.js:18895) 在 这是my package.json:
"dependencies": {
"@angular/animations": "^9.0.4",
"@angular/cdk": "^9.1.0",
"@angular/common": "^9.0.4",
"@angular/compiler": "^9.0.4",
"@angular/core": "^9.0.4",
"@angular/flex-layout": "^9.0.0-beta.28",
"@angular/forms": "^9.0.4",
"@angular/localize": "^9.0.4",
"@angular/platform-browser": "^9.0.4",
"@angular/platform-browser-dynamic": "^9.0.4",
"@angular/platform-server": "^9.0.4",
"@angular/router": "^9.0.4",
"@aspnet/signalr": "^1.1.4",
"@mat-datetimepicker/core": "^3.0.0",
"@ng-bootstrap/ng-bootstrap": "^4.2.1",
"@ngrx/effects": "^8.0.1",
"@ngrx/entity": "^8.0.1",
"@ngrx/router-store": "^8.0.1",
"@ngrx/store": "^8.0.1",
"@ngrx/store-devtools": "^8.0.1",
"@ngx-loading-bar/core": "^4.2.0",
"@ngx-translate/core": "^11.0.1",
"@types/lodash": "^4.14.134",
"angular-in-memory-web-api": "^0.8.0",
"angular2-permission": "^0.1.3",
"angular2-promise-buttons": "^4.0.0",
"chart.js": "^2.8.0",
"chartist": "^0.11.2",
"classlist.js": "^1.1.20150312",
"core-js": "^3.1.4",
"hammerjs": "^2.0.8",
"highlight.js": "^9.15.8",
"jwt-decode": "^2.2.0",
"lodash": "^4.17.11",
"material-design-icons": "^3.0.1",
"moment": "^2.24.0",
"ng-inline-svg": "^8.4.1",
"ng2-jalali-date-picker": "^2.2.7",
"ngrx-store-freeze": "^0.2.4",
"ngx-clipboard": "^12.1.0",
"ngx-daterangepicker-material": "^2.1.3",
"ngx-highlightjs": "^3.0.3",
"ngx-material-file-input": "^1.1.1",
"ngx-perfect-scrollbar": "^8.0.0",
"ngx-permissions": "^7.0.2",
"ngx-toastr": "^10.0.4",
"object-path": "^0.11.4",
"rxjs": "^6.5.2",
"tslib": "^1.10.0",
"web-animations-js": "^2.3.1",
"zone.js": "~0.10.2"
},
"devDependencies": {
"@angular-devkit/build-angular": "^0.900.4",
"@angular/cli": "^9.0.4",
"@angular/compiler-cli": "^9.0.4",
"@angular/language-service": "^9.0.4",
"@angular/material": "^9.1.0",
"@angular/material-moment-adapter": "^9.1.0",
"@ngrx/schematics": "^8.0.1",
"@types/chartist": "^0.9.46",
"@types/highlight.js": "^9.12.3",
"@types/jasmine": "~3.3.13",
"@types/jasminewd2": "~2.0.6",
"@types/node": "~12.0.8",
"@types/object-path": "^0.11.0",
"codelyzer": "^5.1.0",
"jasmine-core": "~3.4.0",
"jasmine-spec-reporter": "~4.2.1",
"karma": "^4.1.0",
"karma-chrome-launcher": "~2.2.0",
"karma-coverage-istanbul-reporter": "^2.0.5",
"karma-jasmine": "~2.0.1",
"karma-jasmine-html-reporter": "^1.4.2",
"protractor": "~5.4.2",
"ts-node": "~8.2.0",
"tslint": "~5.17.0",
"typescript": "^3.6.4",
"webpack-bundle-analyzer": "^3.3.2"
}
有什么问题?如何解决此问题???您正在使用ngrx和ngrx商店冻结。最有可能的是,您的存储中有一个包含角度组件/模板/指令的动作或数据模型。如果将
storeFreeze
从metareducer
中删除,则很可能再也看不到错误
不过,您应该找出是什么reducer将此组件添加到存储中,并找到另一种方法来处理此问题。无论如何,在你的商店里有这样的对象绝对不是一个好主意这是始于9年的NGRX商店和Ivy runtime的一个问题 这里最好解释一下这个问题: 目前的解决办法(2020年3月16日)是禁用这两种功能
strictStateImmutability and strictActionImmutability
在StoreModule MetaReducer中
EffectsModule.forRoot([AuthEffects]),
StoreModule.forRoot(reducers,
{ metaReducers,
runtimeChecks: {
strictStateImmutability: false,
strictActionImmutability: false,
}
}
),
当然,这是一个变通办法,不能解决问题。NGRX目前存在一个问题,我在这里分享我的2美分,因为我发现我犯了一个错误,导致了类似的错误。我在ngrx的选择器中做了一个变异 我的错误是: 无法分配给对象“[对象数组]”的只读属性“0” 通过如下更改解决了此问题:
export const selectInspections = createSelector(selectInspectionsFeature,
(state) =>
[...state.inspections].sort((a, b) => (a.dateTimeUpdated > b.dateTimeUpdated ? -1 : 1))
);
现在我没有修改选择器内的状态。Github问题-感谢这一点,我走错了路。很可能节省了我旋转轮子的时间
export const selectInspections = createSelector(selectInspectionsFeature,
(state) =>
[...state.inspections].sort((a, b) => (a.dateTimeUpdated > b.dateTimeUpdated ? -1 : 1))
);