Utilize TypeScript and HTTPS to send a message through WhatsApp

Trying to utilize TypeScript for sending a message through the WhatsApp cloud API has presented an issue – specifically, the error message "Parameter implicitly has an 'any' type." While I have successfully executed this in Node.js, adapting it to TypeScript poses challenges. The Node.js code that functions properly is as follows: `function sendMessageWhatsapp(data) {

const options={
    host:"graph.facebook.com",
    path:"/v17.0/100215886340876/messages",
    method:"POST",
    body:data,
    headers:
    {
        
        "Content-Type":"application/json",
        Authorization: `Bearer ${TOKEN_CLOUD_API_WSP}`
    }
};


const req=https.request(options,res=>{
  
    res.on("data",d=>{
        process.stdout.write(d);
    });
});


req.on("error",error=>{
    console.error(error)
});


req.write(data);


req.end();

} ` However, while attempting to implement this in TypeScript, I encountered an error. A screenshot illustrating this issue can be found by following this link: enter image description here.

Despite my efforts to address the problem by specifying the parameter as any, the error persists: `function sendMessageWhatsapp(data:any) {

const options={
    host:"graph.facebook.com",
    path:"/v17.0/100215886340876/messages",
    method:"POST",
    body:data,
    headers:
    {
        
        "Content-Type":"application/json",
        Authorization: `Bearer ${process.env.ACCES_TOKEN_FB}`
    }
};


const req=https.request(options,res:any=>{
  
    res.on("data",d=>{
        process.stdout.write(d);
    });
});


req.on("error",error:any=>{
    console.error(error)
});


req.write(data);


req.end();

} `

Answer №1

You are encountering some minor issues in your code. It appears that you are using VS Code, which suggests that you have a tsconfig.json file in your project with certain configuration options enabled like `strict` or `noImplicitAny`. When TypeScript is unable to infer the type of an untyped variable based on these configurations, it raises an error indicating that "Parameter so-and-so implicitly has an 'any' type."

Instead of removing the problematic configuration option, the better approach would be to explicitly specify the types for the untyped parameters.

For instance, to address the issue in line 22:

const req = https.request(options, res => {

You can add a type for `res` as `http.IncomingMessage`, which should resolve the error in line 24 as TypeScript will then understand that `d` has a type of `(chunk: any) => void`. Repeat this process for line 30 to resolve most of your problems. I recommend referring to this link for accurate type definitions.

There is one remaining issue regarding passing anonymous arrow functions. If the function takes multiple parameters or even just one typed parameter, you need to enclose the parameters in parentheses. Simply put, parentheses are only optional when there is exactly one untyped parameter.

Therefore, line 22 should be revised as follows:

const req = https.request(options, (res: http.IncomingMessage) => {

and line 30 should look like:
req.on("error", (error: Error) => {

Examples of incorrect syntax include:
 no parameter => { needs to be () => {
 one typed s: string => { needs to be (s: string) => {
 typed+non n, s: string => { needs to be (n, s: string) => {

Based on the information provided, making these adjustments should help resolve the issues in your code.

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