After I install ng bootstrap and compile, I get this error

Question

ERROR in node_modules/@ng-bootstrap/ng-bootstrap/accordion/accordion.d.ts:191:9 - error TS1086: An accessor cannot be declared in an ambient context.

191 set ngbPanelToggle(panel: NgbPanel); ~~~~~~~~~~~~~~ node_modules/@ng-bootstrap/ng-bootstrap/buttons/checkbox.d.ts:28:9 - error TS1086: An accessor cannot be declared in an ambient context.

28 set focused(isFocused: boolean); ~~~~~~~ node_modules/@ng-bootstrap/ng-bootstrap/buttons/radio.d.ts:14:9 - error TS1086: An accessor cannot be declared in an ambient context.

14 get disabled(): boolean; ~~~~~~~~ node_modules/@ng-bootstrap/ng-bootstrap/buttons/radio.d.ts:15:9 - error TS1086: An accessor cannot be declared in an ambient context.

15 set disabled(isDisabled: boolean); ~~~~~~~~ node_modules/@ng-bootstrap/ng-bootstrap/buttons/radio.d.ts:61:9 - error TS1086: An accessor cannot be declared in an ambient context.

61 set value(value: any); ~~~~~ node_modules/@ng-bootstrap/ng-bootstrap/buttons/radio.d.ts:65:9 - error TS1086: An accessor cannot be declared in an ambient context.

65 set disabled(isDisabled: boolean); ~~~~~~~~ node_modules/@ng-bootstrap/ng-bootstrap/buttons/radio.d.ts:66:9 - error TS1086: An accessor cannot be declared in an ambient context.

66 set focused(isFocused: boolean); ~~~~~~~ node_modules/@ng-bootstrap/ng-bootstrap/buttons/radio.d.ts:67:9 - error TS1086: An accessor cannot be declared in an ambient context.

67 get checked(): boolean; ~~~~~~~ node_modules/@ng-bootstrap/ng-bootstrap/buttons/radio.d.ts:68:9 - error TS1086: An accessor cannot be declared in an ambient context.

68 get disabled(): boolean; ~~~~~~~~ node_modules/@ng-bootstrap/ng-bootstrap/buttons/radio.d.ts:69:9 - error TS1086: An accessor cannot be declared in an ambient context.

69 get value(): any; ~~~~~ node_modules/@ng-bootstrap/ng-bootstrap/buttons/radio.d.ts:70:9 - error TS1086: An accessor cannot be declared in an ambient context.

70 get nameAttr(): string; ~~~~~~~~ node_modules/@ng-bootstrap/ng-bootstrap/carousel/carousel.d.ts:42:9 - error TS1086: An accessor cannot be declared in an ambient context.

42 set interval(value: number); ~~~~~~~~ node_modules/@ng-bootstrap/ng-bootstrap/carousel/carousel.d.ts:43:9 - error TS1086: An accessor cannot be declared in an ambient context.

43 get interval(): number; ~~~~~~~~ node_modules/@ng-bootstrap/ng-bootstrap/carousel/carousel.d.ts:47:9 - error TS1086: An accessor cannot be declared in an ambient context.

47 set wrap(value: boolean); ~~~~ node_modules/@ng-bootstrap/ng-bootstrap/carousel/carousel.d.ts:48:9 - error TS1086: An accessor cannot be declared in an ambient context.

48 get wrap(): boolean; ~~~~ node_modules/@ng-bootstrap/ng-bootstrap/carousel/carousel.d.ts[0m:58:9 - error TS1086: An accessor cannot be declared in an ambient context.

58 set pauseOnHover(value: boolean); ~~~~~~~~~~~~ node_modules/@ng-bootstrap/ng-bootstrap/carousel/carousel.d.ts:59:9 - error TS1086: An accessor cannot be declared in an ambient context.

59 get pauseOnHover(): boolean; ~~~~~~~~~~~~ node_modules/@ng-bootstrap/ng-bootstrap/datepicker/datepicker-service.d.ts:16:9 - error TS1086: An accessor cannot be declared in an ambient context.

16 get model$(): Observable; ~~~~~~ node_modules/@ng-bootstrap/ng-bootstrap/datepicker/datepicker-service.d.ts:17:9 - error TS1086: An accessor cannot be declared in an ambient context.

17 get dateSelect$(): Observable; ~~~~~~~~~~~ node_modules/@ng-bootstrap/ng-bootstrap/datepicker/datepicker.d.ts:234:9 - error TS1086: An accessor cannot be declared in an ambient context.

234 get state(): NgbDatepickerState; ~~~~~ node_modules/@ng-bootstrap/ng-bootstrap/datepicker/datepicker.d.ts:240:9 - error TS1086: An accessor cannot be declared in an ambient context.

240 get calendar(): NgbCalendar; ~~~~~~~~ node_modules/@ng-bootstrap/ng-bootstrap/datepicker/datepicker-input.d.ts:200:9 - error TS1086: An accessor cannot be declared in an ambient context.

200 get disabled(): any; ~~~~~~~~ node_modules/@ng-bootstrap/ng-bootstrap/datepicker/datepicker-input.d.ts:201:9 - errorm TS1086: An accessor cannot be declared in an ambient context.

201 set disabled(value: any); ~~~~~~~~ node_modules/@ng-bootstrap/ng-bootstrap/datepicker/datepicker-month.d.ts:26:9 - error TS1086: An accessor cannot be declared in an ambient context.

26 set month(month: NgbDateStruct); ~~~~~ node_modules/@ng-bootstrap/ng-bootstrap/dropdown/dropdown.d.ts:15:9 - error TS1086: An accessor cannot be declared in an ambient context.

15 set disabled(value: boolean); ~~~~~~~~ node_modules/@ng-bootstrap/ng-bootstrap/dropdown/dropdown.d.ts:16:9 - error TS1086: An accessor cannot be declared in an ambient context.

16 get disabled(): boolean; ~~~~~~~~ node_modules/@ng-bootstrap/ng-bootstrap/modal/modal-ref.d.ts:40:9 - error TS1086: An accessor cannot be declared in an ambient context.

40 get componentInstance(): any; ~~~~~~~~~~~~~~~~~ node_modules/@ng-bootstrap/ng-bootstrap/nav/nav.d.ts:64:9 - error TS1086: An accessor cannot be declared in an ambient context.

64 get active(): boolean; ~~~~~~ node_modules/@ng-bootstrap/ng-bootstrap/nav/nav.d.ts:65:9 - error TS1086: An accessor cannot be declared in an ambient context.

65 get id(): any; ~~ node_modules/@ng-bootstrap/ng-bootstrap/nav/nav.d.ts:66:9 - error TS1086: An accessor cannot be declared in an ambient context.

66 get panelDomId(): string; ~~~~~~~~~~ node_modules/@ng-bootstrap/ng-bootstrap/progressbar/progressbar.d.ts:12:9 - error TS1086: An accessor cannot be declared in an ambient context.

12 set max(max: number); ~~~ node_modules/@ng-bootstrap/ng-bootstrap/progressbar/progressbar.d.ts:13:9 - error TS1086: An accessor cannot be declared in an ambient context.

13 get max(): number; ~~~ node_modules/@ng-bootstrap/ng-bootstrap/tabset/tabset.d.ts:91:9 - error TS1086: An accessor cannot be declared in an ambient context.

91 set justify(className: 'start' | 'center' | 'end' | 'fill' | 'justified'); ~~~~~~~ node_modules/@ng-bootstrap/ng-bootstrap/timepicker/timepicker.d.ts:35:9 - error TS1086: An accessor cannot be declared in an ambient context.

35 set hourStep(step: number); ~~~~~~~~ node_modules/@ng-bootstrap/ng-bootstrap/timepicker/timepicker.d.ts:36:9 - error TS1086: An accessor cannot be declared in an ambient context.

36 get hourStep(): number; ~~~~~~~~ node_modules/@ng-bootstrap/ng-bootstrap/timepicker/timepicker.d.ts:40:9 - error TS1086: An accessor cannot be declared in an ambient context.

40 set minuteStep(step: number); ~~~~~~~~~~ node_modules/@ng-bootstrap/ng-bootstrap/timepicker/timepicker.d.ts:41:9 - error TS1086: An accessor cannot be declared in an ambient context.

41 get minuteStep(): number; ~~~~~~~~~~ node_modules/@ng-bootstrap/ng-bootstrap/timepicker/timepicker.d.ts:45:9 - error TS1086: An accessor cannot be declared in an ambient context.

45 set secondStep(step: number); ~~~~~~~~~~ node_modules/@ng-bootstrap/ng-bootstrap/timepicker/timepicker.d.ts:46:9 - error TS1086: An accessor cannot be declared in an ambient context.

46 get secondStep(): number; ~~~~~~~~~~ node_modules/@ng-bootstrap/ng-bootstrap/timepicker/timepicker.d.ts:72:9 - error TS1086: An accessor cannot be declared in an ambient context.

72 get isSmallSize(): boolean; ~~~~~~~~~~~ node_modules/@ng-bootstrap/ng-bootstrap/timepicker/timepicker.d.ts:73:9 - error TS1086: An accessor cannot be declared in an ambient context.

73 get isLargeSize(): boolean; ~~~~~~~~~~~ node_modules/@ng-bootstrap/ng-bootstrap/tooltip/tooltip.d.ts:100:9 - error TS1086: An accessor cannot be declared in an ambient context.

100 set ngbTooltip(value: string | TemplateRef); ~~~~~~~~~~ node_modules/@ng-bootstrap/ng-bootstrap/tooltip/tooltip.d.ts:101:9 - error TS1086: An accessor cannot be declared in an ambient context.

101 get ngbTooltip(): string | TemplateRef;

** Angular Live Development Server is listening on localhost:4200, open your browser on http://localhost:4200/ ** i ｢wdm｣: Failed to compile.

Answer 1

Replace @ng-bootstrap / ng-bootstrap in package.json with this :

"@ng-bootstrap/ng-bootstrap": "~5.2.2"

and do npm i

this worked fine for me.

Answer 2

Short Answer (if you are running Angular 8):
In your project, run the following command on the cli: npm install @ng-bootstrap/[email protected]

Long Answer:
Please check the version of your angular project and make sure you install the NgBootstrap version that is compatible with your angular project.

Take a look at the dependencies:
https://ng-bootstrap.github.io/#/getting-started

You can check the version of angular using the cli: ng version or you check your package.json file.