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Version 47
12/9/2023
import { api } from "https://esm.town/v/pomdtr/api";
// returns the slug (author/name)
function getAliasFromUrl(valUrl: string): string {
const slug = valUrl.split("/v/")[1];
// TODO: Should be able to get specific version of val, but for now we remove versions
return slug.split("?v")[0];
}
function getDependencySlugsFromCode(valCode: string): string[] {
const regex = new RegExp(`import.*from ["'](https://esm.town/v/.*?)["'];`, "g");
let match;
const dependencies: string[] = [];
while ((match = regex.exec(valCode)) !== null) {
dependencies.push(match[1]);
}
return dependencies.map(url => getAliasFromUrl(url));
}
export async function getDependencyGraph(valUrlOrSlug: string) {
const initialSlug = valUrlOrSlug.includes("/v/")
? getAliasFromUrl(valUrlOrSlug)
: valUrlOrSlug;
const slugQueue = [initialSlug];
const dependencyMap = new Map<string, string[]>();
while (slugQueue.length > 0) {
const slug = slugQueue.shift();
if (dependencyMap.has(slug)) {
continue;
}
const { code } = await api(`/v1/alias/${slug}`);
const dependencySlugs = getDependencySlugsFromCode(code);
dependencyMap.set(slug, dependencySlugs);
Updated: April 8, 2024