Bringing in a script and invoking a function on a specific variable

As a newcomer to Typescript, I've been experimenting with some code I came across online to enhance the appearance of links on my website.

<script src="https://wow.zamimg.com/widgets/power.js"></script>
<script>var wowhead_tooltips = {
    "colorlinks": true,
    "iconizelinks": true,
    "renamelinks": true
    };
</script>

After adding this code snippet to my index.html file, everything was working smoothly until I loaded a component. Upon further investigation, I discovered that I needed to call $WowheadPower.refreshLinks();

To have the links update when new elements are added, I wasn't sure how to declare the variable in Typescript and connect it to various Angular commands, unless making use of a try catch block:

loadScript(){
    try{
        // Update tooltips

        if(typeof $WowheadPower == 'undefined'){
            $.getScript('//wow.zamimg.com/widgets/power.js');
        } else {
            $WowheadPower.refreshLinks();
            console.log($WowheadPower)
        }
    } finally {}
}

I encountered an error stating Cannot find name '$WowheadPower' However, despite this error, the functionality on my page is as desired.

Although it functions perfectly, the persistent error led me to explicitly declare the variable

try{
    // Update tooltips
    var $WowheadPower
    if(typeof $WowheadPower == 'undefined'){
        $.getScript('//wow.zamimg.com/widgets/power.js');
    } else {
        $WowheadPower.refreshLinks();
        console.log($WowheadPower)
    }
} finally {}

This change caused the script to break, presumably because I unintentionally overwrote the correct variable holding the necessary method.

Currently, I am stuck leaving the error in place for the functionality to work properly, although it prevents successful compilation during 'ng serve'. Only by saving the project in VS Code does it revert back to functioning correctly.

Any advice on how to tackle this issue?

Answer №1

When using an external variable like $WowheadPower imported from another file in TypeScript, you can inform TypeScript of its existence without explicitly declaring it:

declare var $WowheadPower: any

Place this declaration at the start of your code to notify TypeScript about the variable. It is recommended to define an interface that accurately describes the type of $WowheadPower instead of just using any.

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