@jspm/generator/lib/providers/esmsh.js

Package Import Map Generation Tool

// @ts-ignore
import { fetch } from "../common/fetch.js";
import { JspmError } from "../common/err.js";
import { fetchVersions } from "./jspm.js";
// @ts-ignore
import { SemverRange } from "sver";
import { importedFrom } from "../common/url.js";
const cdnUrl = "https://esm.sh/";
export async function pkgToUrl(pkg) {
    // The wildcard '*' at the end tells the esm.sh CDN to externalise all
    // dependencies instead of bundling them into the returned module file.
    //   see https://esm.sh/#docs
    return `${cdnUrl}*${pkg.name}@${pkg.version}/`;
}
const exactPkgRegEx = /^(?:v\d+\/)?\*?((?:@[^/\\%@]+\/)?[^./\\%@][^/\\%@]*)@([^\/]+)(\/.*)?$/;
export function parseUrlPkg(url) {
    if (!url.startsWith(cdnUrl)) return;
    const [, name, version] = url.slice(cdnUrl.length).match(exactPkgRegEx) || [];
    if (!name || !version) return;
    return {
        registry: "npm",
        name,
        version
    };
}
export async function getPackageConfig(pkgUrl) {
    const res = await fetch(`${pkgUrl}package.json`, this.fetchOpts);
    switch(res.status){
        case 200:
        case 304:
            break;
        case 400:
        case 401:
        case 403:
        case 404:
        case 406:
        case 500:
            this.pcfgs[pkgUrl] = null;
            return;
        default:
            throw new JspmError(`Invalid status code ${res.status} reading package config for ${pkgUrl}. ${res.statusText}`);
    }
    return await res.json();
}
export async function resolveLatestTarget(target, layer, parentUrl) {
    const { registry, name, range, unstable } = target;
    const versions = await fetchVersions.call(this, name);
    const semverRange = new SemverRange(String(range) || "*", unstable);
    const version = semverRange.bestMatch(versions, unstable);
    if (version) {
        return {
            registry,
            name,
            version: version.toString()
        };
    }
    throw new JspmError(`Unable to resolve ${registry}:${name}@${range} to a valid version${importedFrom(parentUrl)}`);
}


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