How can one efficiently locate the suitable dynamic path resource within an array of resources?

In my scenario, I am dealing with an Array of resources that includes a dynamic resource like "guides/:guideId/packages" and a currentURL (guides/GUIDE007/packages):

const resources = ["guides", "guides/files", "guides/:guideId/packages"];
const currentURL = "guides/GUIDE007/packages";

const findMatch = (resources, currentURL) => { return ... ?? }  

const matchingResource = findMatch(resources, currentURL);
console.log(matchingResource) // guides/:guideId/packages

What is the most effective method for identifying a match in the array that corresponds to the resource format, given that the currentURL aligns with a resource?

javascriptarraysurldynamicpath

Answer №1

Before diving into building your own route matching implementation, consider utilizing a library designed for this purpose. However, if you're interested in creating your own solution, here's a sample implementation that transforms resource strings into regular expressions for testing against the current URL.

const resources = ["guides", "guides/files", "guides/:guideId/packages", "guides/packages/:packageId"];
const currentURL1 = "guides/GUIDE007/packages";
const currentURL2 = "guides/packages/PKG007";

const getResourceMatch = (resources, currentURL) => {
  return resources.find(r => {
    const regexStr = '^' + r.replace(/(:\w+)/g,'[\\w-]+') + '$';
    const regex = new RegExp(regexStr);
    return regex.test(currentURL);
  })
}  

const resourceMatch1 = getResourceMatch(resources, currentURL1);
const resourceMatch2 = getResourceMatch(resources, currentURL2);

console.log(resourceMatch1) // guides/:guideId/packages
console.log(resourceMatch2) // guides/packages/:packageId

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