Utilizing external JavaScript scripts within TypeScript

If I have a JavaScript file named myScript.js containing the following code:

function run(file) {
    // some operations
}

How can I incorporate the 'run' function into a TypeScript file?

I've come across similar inquiries, but the responses were not very straightforward. Where should I declare the function? How do I reference the declaration file, etc.

Answer №1

When using TypeScript, it may not recognize the run function. To resolve this issue, you need to declare it as follows:

declare function run(file: any): any;

After declaring the function, you can use it like this:

run(myFile);

In addition, you can explore using the "--allowJs" tsc parameter which is mentioned in the TypeScript 1.8 release notes. However, I do not have personal experience with this.

If the external script you are using is from a published library, there may be a typings file (.d.ts) available for it. You can use the typings tool to check for this case.

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