"Encountering an if-else error in a TypeScript project utilizing Angular 6 within the VS

Question

"Encountering an if-else error in a TypeScript project utilizing Angular 6 within the VS

Just starting out with TypeScript and attempting to set up a constants file in an Angular 6 Ionic/Cordova project. To create the service file, I used the Angular CLI command ng generate service appboot

When trying to implement a simple if-else statement, I encountered an issue where VSCode indicated that I was missing a comma. Additionally, when running 'ionic serve', an error occurred specifically when typing the 'else' keyword.

Here is a snippet from my appboot.service.ts file:

import { Injectable, CUSTOM_ELEMENTS_SCHEMA } from '@angular/core';
import { environment } from '../environments/environment';


@Injectable({
  providedIn: 'root'
})
export class AppbootService {

env: string;

constructor() {}

if (env == "dev"){

} else {}

angular typescript cordova visual-studio-code

Answer 1

Answer №1

It is important to note that statements cannot appear randomly within a class body; they must be placed within a method or constructor body. Here is an example:

import { Injectable, CUSTOM_ELEMENTS_SCHEMA } from '@angular/core';
import { environment } from '../environments/environment';


@Injectable({
    providedIn: 'root'
})
export class AppbootService {


    env: string;

    constructor() {
        // Assuming env gets set somehow before the if 
        if (this.env == "dev") {

        } else { }
    }
}

Additionally, field access needs to be prefixed with this.

Answer 2

It is important to note that statements cannot appear randomly within a class body; they must be placed within a method or constructor body. Here is an example:

import { Injectable, CUSTOM_ELEMENTS_SCHEMA } from '@angular/core';
import { environment } from '../environments/environment';


@Injectable({
    providedIn: 'root'
})
export class AppbootService {


    env: string;

    constructor() {
        // Assuming env gets set somehow before the if 
        if (this.env == "dev") {

        } else { }
    }
}

Additionally, field access needs to be prefixed with this.

Answer 3

Answer №2

Your situation falls outside of the usual parameters.

You may need to consider placing your condition in the constructor... :

import { Injectable, CUSTOM_ELEMENTS_SCHEMA } from '@angular/core';
import { environment } from '../environments/environment';

@Injectable({
    providedIn: 'root'
})
export class AppbootService {

    env: string;

    constructor() {
        if (this.env == "dev") {

        } else { }
    }
}

...alternatively, you could implement it within the ngOnInit life cycle hook... :

import { Injectable, CUSTOM_ELEMENTS_SCHEMA } from '@angular/core';
import { environment } from '../environments/environment';

@Injectable({
    providedIn: 'root'
})
export class AppbootService implements OnInit {

    env: string;

    constructor() {}

    ngOnInit() {
        if (this.env == "dev") {

        } else { }
    }
}

...or simply encapsulate it within a new function. :

import { Injectable, CUSTOM_ELEMENTS_SCHEMA } from '@angular/core';
import { environment } from '../environments/environment';

@Injectable({
    providedIn: 'root'
})
export class AppbootService implements OnInit {

    env: string;

    constructor() {}

    ngOnInit() {}

    myfunction() {
        if (this.env == "dev") {

        } else { }
    }
}

Answer 4

Your situation falls outside of the usual parameters.

You may need to consider placing your condition in the constructor... :

import { Injectable, CUSTOM_ELEMENTS_SCHEMA } from '@angular/core';
import { environment } from '../environments/environment';

@Injectable({
    providedIn: 'root'
})
export class AppbootService {

    env: string;

    constructor() {
        if (this.env == "dev") {

        } else { }
    }
}

...alternatively, you could implement it within the ngOnInit life cycle hook... :

import { Injectable, CUSTOM_ELEMENTS_SCHEMA } from '@angular/core';
import { environment } from '../environments/environment';

@Injectable({
    providedIn: 'root'
})
export class AppbootService implements OnInit {

    env: string;

    constructor() {}

    ngOnInit() {
        if (this.env == "dev") {

        } else { }
    }
}

...or simply encapsulate it within a new function. :

import { Injectable, CUSTOM_ELEMENTS_SCHEMA } from '@angular/core';
import { environment } from '../environments/environment';

@Injectable({
    providedIn: 'root'
})
export class AppbootService implements OnInit {

    env: string;

    constructor() {}

    ngOnInit() {}

    myfunction() {
        if (this.env == "dev") {

        } else { }
    }
}

"Encountering an if-else error in a TypeScript project utilizing Angular 6 within the VS

Answer №1

Answer №2

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