fix: prevent crash due to unresolved alias in yaml

Fixes #5186

core/src/config/base.ts

@@ -101,6 +101,11 @@ export async function loadAndValidateYaml(content: string, path: string): Promis
       if (doc.errors.length > 0) {
         throw doc.errors[0]
       }
+      // Workaround: Call toJS might throw an error that is not listed in the errors above.
+      // See also https://github.com/eemeli/yaml/issues/497
+      // We call this here to catch this error early and prevent crashes later on.
+      doc.toJS()
+
       doc.source = content
       return doc
     })

core/src/plugins/kubernetes/kubernetes-type/common.ts

@@ -464,10 +464,19 @@ function parseKubernetesManifests(str: string): KubernetesResource[] {
     }
   }
 
-  // TODO: We should use schema validation to make sure that apiVersion, kind and metadata are always defined as required by the type.
-  const manifests = docs.map((d) => d.toJS()) as KubernetesResource[]
+  let manifests: any[]
+  try {
+    manifests = docs.map((d) => d.toJS())
+  } catch (error) {
+    // toJS sometimes throws errors that are not caught by the above error check.
+    // See also https://github.com/eemeli/yaml/issues/497
+    throw new ConfigurationError({
+      message: `Failed to parse Kubernetes manifest: ${error}`,
+    })
+  }
 
-  return expandListManifests(manifests)
+  // TODO: We should use schema validation to make sure that apiVersion, kind and metadata are always defined as required by the type.
+  return expandListManifests(manifests as KubernetesResource[])
 }
 
 /**

core/test/unit/src/config/base.ts

@@ -15,6 +15,7 @@ import {
   noTemplateFields,
   validateRawConfig,
   configTemplateKind,
+  loadAndValidateYaml,
 } from "../../../../src/config/base"
 import { resolve, join } from "path"
 import { expectError, getDataDir, getDefaultProjectConfig } from "../../../helpers"
@@ -25,6 +26,7 @@ import { getRootLogger } from "../../../../src/logger/logger"
 import { ConfigurationError } from "../../../../src/exceptions"
 import { resetNonRepeatableWarningHistory } from "../../../../src/warnings"
 import { omit } from "lodash"
+import { dedent } from "../../../../src/util/string"
 
 const projectPathA = getDataDir("test-project-a")
 const modulePathA = resolve(projectPathA, "module-a")
@@ -591,3 +593,42 @@ describe("findProjectConfig", async () => {
     })
   })
 })
+
+describe("loadAndValidateYaml", () => {
+  it("should load and validate yaml and annotate every document with the source", async () => {
+    const yaml = dedent`
+      apiVersion: v1
+      kind: Test
+      spec:
+        foo: bar
+      name: foo
+    `
+
+    const yamlDocs = await loadAndValidateYaml(yaml, "/foo")
+
+    expect(yamlDocs).to.have.length(1)
+    expect(yamlDocs[0].source).to.equal(yaml)
+    expect(yamlDocs[0].toJS()).to.eql({
+      apiVersion: "v1",
+      kind: "Test",
+      spec: {
+        foo: "bar",
+      },
+      name: "foo",
+    })
+  })
+
+  it("should throw ConfigurationError if yaml contains reference to undefined alias", async () => {
+    const yaml = dedent`
+      foo: *bar
+    `
+
+    await expectError(
+      () => loadAndValidateYaml(yaml, "/foo"),
+      (err) => {
+        expect(err.message).to.include("ReferenceError: Unresolved alias")
+        expect(err.message).to.include("bar")
+      }
+    )
+  })
+})