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feat(unpkg): support unpkg alias path access entry file #674
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chilingling committed May 8, 2024
1 parent 67f1a24 commit 114da2e
Showing 1 changed file with 35 additions and 1 deletion.
36 changes: 35 additions & 1 deletion app/port/controller/PackageVersionFileController.ts
Original file line number Diff line number Diff line change
Expand Up @@ -145,10 +145,22 @@ export class PackageVersionFileController extends AbstractController {
}

const file = await this.packageVersionFileService.showPackageVersionFile(packageVersion, path);
const hasMeta = typeof meta === 'string';

if (!file) {
const possibleFile = await this.#searchPossibleEntries(packageVersion, path);

if (possibleFile) {
console.log('path', possibleFile.path);

const route = `/${fullname}/${versionSpec}/files${possibleFile.path}${hasMeta ? '?meta' : ''}`;
ctx.redirect(route);
return;
}

throw new NotFoundError(`File ${fullname}@${versionSpec}${path} not found`);
}
const hasMeta = typeof meta === 'string';

if (hasMeta) {
ctx.set('cache-control', META_CACHE_CONTROL);
return formatFileItem(file);
Expand All @@ -161,6 +173,28 @@ export class PackageVersionFileController extends AbstractController {
return await this.distRepository.getDistStream(file.dist);
}

/**
* compatibility with unpkg
* 1. try to match alias entry. e.g. accessing `index.js` or `index.json` using /index
* 2. if given path is directory and has `index.js` file, redirect to it. e.g. using `lib` alias to access `lib/index.js`
* @param packageVersion
* @param path
* @return
*/
async #searchPossibleEntries(packageVersion: any, path: string) {
const possiblePath = [ `${path}.js`, `${path}.json`, `${path}/index.js` ];

const possibleFiles = possiblePath.map(pathItem => this.packageVersionFileService.showPackageVersionFile(packageVersion, pathItem));

const files = await Promise.allSettled(possibleFiles);

for (const file of files) {
if (file.status === 'fulfilled' && file.value) {
return file.value;
}
}
}

async #getPackageVersion(ctx: EggContext, fullname: string, scope: string, name: string, versionSpec: string) {
const { blockReason, packageVersion } = await this.packageManagerService.showPackageVersionByVersionOrTag(
scope, name, versionSpec);
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