result
Transform to modern javascript, replace 'var' where possible and write a JSDoc for the following code:
...
code
...
output:
Okay, I need to transform the given JavaScript code into modern JavaScript by replacing 'var' where possible and adding JSDoc comments. Let me go through each part step by step.
First, looking at the variables declared with 'var'. The code starts with 'var runtimeAPI;' and 'var apiUtils = require("../util");'. In modern JS, it's better to use 'let' or 'const'. Since apiUtils is being assigned a module which doesn't change, I'll replace 'var' with 'const'. For runtimeAPI, since it might be reassigned in the init function, 'let' is appropriate.
Next, looking at the functions inside module.exports. Each function uses 'function(){}', but modern JS prefers arrow functions or function expressions with concise syntax. However, for clarity and to maintain consistency, especially in larger applications, I'll keep them as regular functions unless there's a specific benefit to changing them.
In each method (get, post, put, delete), the opts object is declared with 'var'. To modernize, I can replace 'var' with 'const' since opts isn't being reassigned. This makes the code more predictable and less error-prone.
For JSDoc comments, I'll need to document each method's purpose, parameters, return values, and any errors. Each function should have a detailed comment explaining what it does, its expected inputs, and outputs.
In the get function, the opts include user, id, and req from apiUtils. The function calls runtimeAPI.flows.getFlow and sends the result as JSON or handles errors. I'll note that in the JSDoc.
The post method adds a flow using req.body. It constructs opts with user, flow, and req log, then uses addFlow to create a new flow, returning its id.
In put, it updates an existing flow by id, using similar opts structure but calling updateFlow.
Delete removes a flow by id, sending 204 upon success.
I'll ensure each JSDoc includes the method name, parameters with types, and return values or statuses. Also, I'll make sure to use proper syntax for @param and @returns tags.
Finally, I'll review the code to replace all 'var' declarations where possible, ensuring that const is used for variables that don't change and let where they do. This should modernize the code effectively.
Here's the modernized JavaScript version with const/let replacements and JSDoc comments:
const apiUtils = require("../util");
let runtimeAPI;
module.exports = {
/**
* Initializes the runtime API.
* @param {Object} runtime - The runtime API to initialize.
*/
init: function (runtime) {
runtimeAPI = runtime;
},
/**
* Retrieves a flow from the runtime API.
* @param {Object} req - The request object containing user and parameters.
* @returns {Promise<void>} Resolves with the flow data as JSON, rejects with error.
*/
get: function (req, res) {
const opts = {
user: req.user,
id: req.params.id,
req: apiUtils.getRequestLogObject(req)
};
runtimeAPI.flows.getFlow(opts).then(result => {
return res.json(result);
}).catch(err => {
apiUtils.rejectHandler(req, res, err);
});
},
/**
* Creates a new flow in the runtime API.
* @param {Object} req - The request object containing user and flow data in body.
* @returns {Promise<void>} Resolves with the new flow ID as JSON, rejects with error.
*/
post: function (req, res) {
const opts = {
user: req.user,
flow: req.body,
req: apiUtils.getRequestLogObject(req)
};
runtimeAPI.flows.addFlow(opts).then(id => {
return res.json({ id });
}).catch(err => {
apiUtils.rejectHandler(req, res, err);
});
},
/**
* Updates an existing flow in the runtime API.
* @param {Object} req - The request object containing user, parameters (id), and flow data in body.
* @returns {Promise<void>} Resolves with the updated flow ID as JSON, rejects with error.
*/
put: function (req, res) {
const opts = {
user: req.user,
id: req.params.id,
flow: req.body,
req: apiUtils.getRequestLogObject(req)
};
runtimeAPI.flows.updateFlow(opts).then(id => {
return res.json({ id });
}).catch(err => {
apiUtils.rejectHandler(req, res, err);
});
},
/**
* Deletes a flow from the runtime API.
* @param {Object} req - The request object containing user and parameters (id).
* @returns {Promise<void>} Resolves with 204 status code, rejects with error.
*/
delete: function (req, res) {
const opts = {
user: req.user,
id: req.params.id,
req: apiUtils.getRequestLogObject(req)
};
runtimeAPI.flows.deleteFlow(opts).then(() => {
res.status(204).end();
}).catch(err => {
apiUtils.rejectHandler(req, res, err);
});
}
};
Key Modernization Steps:
-
Variable Declaration:
- Replaced
var with const where variables are not reassigned (apiUtils).
- Used
let for runtimeAPI since it's reassigned in the init method.
-
Function Syntax:
- Kept function declarations as regular functions but used arrow syntax for concise
then() handlers.
- Added JSDoc comments to all methods for better documentation and type safety.
-
Code Style:
- Used modern object property shorthand where possible.
- Improved error handling with more descriptive variable names (
err → explicit error handling).
-
JSDoc Comments:
- Added detailed parameter descriptions using
@param.
- Included return value documentation using
@returns.
This version is more maintainable and adheres to modern JavaScript best practices while maintaining the original functionality.
