I came across this code:
export default async function (req, res) {
...
}
This appears to be an anonymous function and it does get called when the app is run, but but I don’t know how it can get called.
NOTE: This is part of a Nodejs app.
The entire code that it is part of is located in a single file:
import { Configuration, OpenAIApi } from "openai";
const configuration = new Configuration({
apiKey: process.env.OPENAI_API_KEY,
});
const openai = new OpenAIApi(configuration);
export default async function (req, res) {
if (!configuration.apiKey) {
res.status(500).json({
error: {
message: "OpenAI API key not configured, please follow instructions in README.md",
}
});
return;
}
const animal = req.body.animal || '';
if (animal.trim().length === 0) {
res.status(400).json({
error: {
message: "Please enter a valid animal",
}
});
return;
}
try {
const completion = await openai.createCompletion({
model: "text-davinci-003",
prompt: generatePrompt(animal),
temperature: 0.6,
});
res.status(200).json({ result: completion.data.choices[0].text });
} catch(error) {
// Consider adjusting the error handling logic for your use case
if (error.response) {
console.error(error.response.status, error.response.data);
res.status(error.response.status).json(error.response.data);
} else {
console.error(`Error with OpenAI API request: ${error.message}`);
res.status(500).json({
error: {
message: 'An error occurred during your request.',
}
});
}
}
}
function generatePrompt(animal) {
const capitalizedAnimal =
animal[0].toUpperCase() + animal.slice(1).toLowerCase();
return `Suggest three names for an animal that is a superhero.
Animal: Cat
Names: Captain Sharpclaw, Agent Fluffball, The Incredible Feline
Animal: Dog
Names: Ruff the Protector, Wonder Canine, Sir Barks-a-Lot
Animal: ${capitalizedAnimal}
Names:`;
}
>Solution :
It’s the default export of a file. So when it is imported in another file, the whole default export can be placed into a variable.
// file1.js
export default async function (req, res) {
...
}
// file2.js
import myDefault from "file1.js";
// do something with myDefault
Or using the alternative syntax, useful when there are other exports from the file:
// file3.js
import { default as alias } from "file1.js";
// do something with alias