Better handling of deleted packages

Fixes #88

package.json

@@ -49,7 +49,7 @@
     "glob-promise": "^4.2.2",
     "prettier": "^2.5.1",
     "tar-fs": "^2.1.1",
-    "typescript": "^4.6.4",
+    "typescript": "^5.7.2",
     "zlib": "^1.0.5"
   }
 }

src/DependencyFetcher.ts

@@ -5,7 +5,6 @@ import {
   Manifest,
   Package,
   Project,
-  structUtils,
   ThrowReport,
   Workspace,
 } from "@yarnpkg/core"
@@ -28,21 +27,20 @@ export class DependencyFetcher {
   ) {}
 
   async fetch({ descriptor, includeRange, includeURL, pkg }: FetchOptions) {
-    const [latest, range, homepageURL] = await Promise.all([
-      this.suggest(pkg, "latest"),
-      includeRange ? this.suggest(pkg, descriptor.range) : Promise.resolve(),
-      includeURL ? this.fetchURL(pkg) : Promise.resolve(),
-    ])
-
-    if (!latest) {
-      const name = structUtils.prettyIdent(this.configuration, pkg)
-      throw new Error(`Could not fetch candidate for ${name}.`)
-    }
+    try {
+      const [latest, range, homepageURL] = await Promise.all([
+        this.suggest(pkg, "latest"),
+        includeRange ? this.suggest(pkg, descriptor.range) : Promise.resolve(),
+        includeURL ? this.fetchURL(pkg) : Promise.resolve(),
+      ])
 
-    return {
-      latest: latest.range,
-      range: range?.range,
-      url: homepageURL ?? undefined,
+      return {
+        latest: latest?.range,
+        range: range?.range,
+        url: homepageURL ?? undefined,
+      }
+    } catch (error) {
+      return { error }
     }
   }
 

src/OutdatedCommand.ts

@@ -200,7 +200,8 @@ export class OutdatedCommand extends BaseCommand {
           project,
           fetcher,
           dependencies,
-          progress
+          progress,
+          report
         )
       }
     )
@@ -422,11 +423,12 @@ export class OutdatedCommand extends BaseCommand {
     project: Project,
     fetcher: DependencyFetcher,
     dependencies: DependencyInfo[],
-    progress?: ReturnType<typeof Report["progressViaCounter"]>
+    progress?: ReturnType<typeof Report["progressViaCounter"]>,
+    report?: StreamReport
   ): Promise<OutdatedDependency[]> {
     const outdated = dependencies.map(
       async ({ dependencyType, descriptor, name, pkg, workspace }) => {
-        const { latest, range, url } = await fetcher.fetch({
+        const { error, latest, range, url } = await fetcher.fetch({
           descriptor,
           includeRange: this.includeRange,
           includeURL: this.includeURL(configuration),
@@ -436,7 +438,16 @@ export class OutdatedCommand extends BaseCommand {
         // JSON reports don't use progress, so this only applies for non-JSON cases.
         progress?.tick()
 
-        if (isVersionOutdated(pkg.version!, latest)) {
+        if (error instanceof Error) {
+          report?.reportError(
+            MessageName.UNNAMED,
+            `Failed to fetch ${name}: ${error.message}`
+          )
+
+          return
+        }
+
+        if (latest && isVersionOutdated(pkg.version!, latest)) {
           return {
             current: pkg.version!,
             latest,

test/specs/outdated.test.ts

@@ -39,9 +39,8 @@ test.describe("yarn outdated", () => {
     expect(stderr).toBe("")
   })
 
-  test("throws an error when a package is not found", async ({
+  test("displays a report error when a package is not found", async ({
     readFile,
-    registry,
     run,
     writeFile,
     writeJSON,
@@ -58,8 +57,7 @@ test.describe("yarn outdated", () => {
     await writeFile("yarn.lock", lockfile.replace(/patch/g, "not-found"))
 
     const { code, stderr, stdout } = await run("outdated")
-    const output = stdout.replace(registry.port.toString(), "<registry port>")
-    expect(output).toMatchSnapshot("not-found.txt")
+    expect(stdout).toMatchSnapshot("not-found.txt")
     expect(stderr).toBe("")
     expect(code).toBe(1)
   })

test/specs/outdated.test.ts-snapshots/not-found.txt

@@ -1,7 +1,6 @@
 ➤ YN0000: ┌ Checking for outdated dependencies
-➤ YN0035: │ Package not found
-➤ YN0035: │   Response Code: 404 (Not Found)
-➤ YN0035: │   Request Method: GET
-➤ YN0035: │   Request URL: http://localhost:<registry port>/not-found
+➤ YN0000: │ Failed to fetch not-found: Package not found
 ➤ YN0000: └ Completed
+
+➤ YN0000: ✨ All your dependencies are up to date!
 ➤ YN0000: Failed with errors

yarn.lock

@@ -3667,23 +3667,23 @@ __metadata:
   languageName: node
   linkType: hard
 
-"typescript@npm:^4.6.4":
-  version: 4.6.4
-  resolution: "typescript@npm:4.6.4"
+"typescript@npm:^5.7.2":
+  version: 5.7.2
+  resolution: "typescript@npm:5.7.2"
   bin:
     tsc: bin/tsc
     tsserver: bin/tsserver
-  checksum: 92e2c0328485a4f7bd7435f5b105f03addff32f867e241dc3be8c372ed801a138c732d9a55697696d2f82a80dd6ad4bddff1ad6b0d1884bf4a24b92e71094c44
+  checksum: a873118b5201b2ef332127ef5c63fb9d9c155e6fdbe211cbd9d8e65877283797cca76546bad742eea36ed7efbe3424a30376818f79c7318512064e8625d61622
   languageName: node
   linkType: hard
 
-"typescript@patch:typescript@npm%3A^4.6.4#optional!builtin<compat/typescript>":
-  version: 4.6.4
-  resolution: "typescript@patch:typescript@npm%3A4.6.4#optional!builtin<compat/typescript>::version=4.6.4&hash=5d3a66"
+"typescript@patch:typescript@npm%3A^5.7.2#optional!builtin<compat/typescript>":
+  version: 5.7.2
+  resolution: "typescript@patch:typescript@npm%3A5.7.2#optional!builtin<compat/typescript>::version=5.7.2&hash=e012d7"
   bin:
     tsc: bin/tsc
     tsserver: bin/tsserver
-  checksum: 0e3fa814d454942a689daf4c00f82328d323e7ecd4077e3265d45375e64642611631f4c882a71be87774468ba03793e9b8ff4bccfac3018194a9e36d8f72c251
+  checksum: c891ccf04008bc1305ba34053db951f8a4584b4a1bf2f68fd972c4a354df3dc5e62c8bfed4f6ac2d12e5b3b1c49af312c83a651048f818cd5b4949d17baacd79
   languageName: node
   linkType: hard
 
@@ -3817,7 +3817,7 @@ __metadata:
     semver: "npm:^7.5.4"
     tar-fs: "npm:^2.1.1"
     typanion: "npm:^3.14.0"
-    typescript: "npm:^4.6.4"
+    typescript: "npm:^5.7.2"
     zlib: "npm:^1.0.5"
   languageName: unknown
   linkType: soft