question: export custom provider implemention "resolveLatestTarget"

[Bisstocuz]

I wanna write a custom provider like unpkg.ts to use vite-plugin-jspm.

But these code below cannot work:

import { ExactPackage } from '@jspm/generator/src/install/package'

const cdnUrl = 'https://npm.<proxy-url>.com/'

export async function pkgToUrl(pkg: ExactPackage): Promise<`${string}/`> {
    return `${cdnUrl}${pkg.name}@${pkg.version}/`
}

const exactPkgRegEx = /^((?:@[^/\\%@]+\/)?[^./\\%@][^/\\%@]*)@([^/]+)(\/.*)?$/

export function parseUrlPkg(url: string) {
    if (!url.startsWith(cdnUrl)) return null
    const [, name, version] = url.slice(cdnUrl.length).match(exactPkgRegEx) || []
    if (name && version) {
        return { registry: 'npm', name, version }
    }
    return null
}

export { resolveLatestTarget } from '@jspm/generator/src/providers/jspm'

Vite reported:

X [ERROR] No known conditions for "./src/providers/jspm" specifier in "@jspm/generator" package [plugin externalize-deps]

How to call resolveLatestTarget outside of @jspm/generator?

[guybedford]

Good point, it's not currently exposed. The best I can suggest right now would just be to copy and paste the implementation exactly.

[Bisstocuz]

Good point, it's not currently exposed. The best I can suggest right now would just be to copy and paste the implementation exactly.

Another question is, if I tried to implement own resolveLatestTarget, the TypeScript will give a warning "cannot assign this: Provider to this: Resolver". I'm really getting numb from TypeScript.

[guybedford]

This should definitely be easier... you're welcome to make any suggestions to the public interface to improve the user experience here.