Tips for sharing data externally using a Typescript Vue component

Struggling with adjusting data from outside the Vue app when using TypeScript with single file components.

In my Main.ts file, where I declare a new Vue instance, attempting to allocate it to a variable is not giving me access to that variable. Even using var x = new Vue(){...} in Main.ts doesn't work.

I attempted making variables public in my .vue file, and while I can select the element with app.__vue__, I can only access variables declared in the .vue file if they are initialized in the main.ts file, but then they do not render in the component template.

Main.ts:

import Vue from 'vue';
import App from './App.vue';

Vue.config.productionTip = false;

new Vue({
  render: (h) => h(App),
}).$mount('#app');

App.vue script:

export default class App extends Vue {
  search: string = "";
}

While the JavaScript implementations allow adjusting properties by calling the variable bound to the Vue App from the console, I haven't been successful in replicating this functionality in TypeScript.

Answer №1

Did you know that Typescript is actually a superset of JavaScript? This means it adds to the language without taking anything away. Essentially, anything you can do in JavaScript is also possible in Typescript.

If you want to access the Vue instance globally, all you have to do is assign it to the window object:

(window as Window).Vue = new Vue({ 
  render: (h) => h(App),
}).$mount('#app');

Keep in mind that certain settings may require you to make adjustments for Typescript to handle this properly.

Additionally, variables declared with var are not automatically available outside of the file they're defined in. This intentional restriction prevents global pollution. If you really need to use a variable elsewhere, consider exporting it from one file and importing it into another.

Answer №2

After careful consideration, I have devised the following solution:

const vm = new Vue({
  render: (h) => h(App)
}).$mount('#app');

(<any>window).vueInstance = vm.$children[0];

I am now able to access my component using the Vue instance.

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