feat: better YAML parsing error reporting

core/package.json

@@ -111,7 +111,7 @@
     "winston": "^3.17.0",
     "workerpool": "^9.1.3",
     "yaml": "^2.4.2",
-    "zod": "^3.24.2"
+    "zod": "^3.25.13"
   },
   "engine-strict": true,
   "engines": {

packages/config-yaml/package.json

@@ -18,7 +18,8 @@
   "dependencies": {
     "@continuedev/config-types": "^1.0.14",
     "yaml": "^2.6.1",
-    "zod": "^3.24.2"
+    "zod": "^3.25.13",
+    "zod-validation-error": "^3.4.1"
   },
   "devDependencies": {
     "@types/jest": "^29.5.14",

packages/config-yaml/src/load/unroll.test.ts

@@ -0,0 +1,72 @@
+import { configYamlSchema } from "../schemas/index.js";
+import { parseConfigYaml } from "./unroll.js";
+
+
+
+describe("config.yaml validation", () => {
+  it("parses valid config YAML", () => {
+    const yaml = `
+name: Local Assistant
+version: 1.0.0
+schema: v1
+
+models:
+  - name: granite3.3:8b
+    provider: ollama
+    model: granite3.3:8b
+    roles:
+      - autocomplete
+      - chat
+
+  - name: nomic-embed-text
+    provider: ollama
+    model: nomic-embed-text:latest
+    roles:
+      - embed
+
+context:
+  - provider: code
+  - provider: docs
+  - provider: diff
+  - provider: terminal
+  - provider: problems
+  - provider: folder
+  - provider: codebase
+  - provider: clipboard
+
+rules:
+  - name: Angry Teenager
+    rule: always respond like an angry teenager
+
+docs:
+  - name: Continue docs
+    startUrl: https://docs.continue.dev/
+`;
+    const result = parseConfigYaml(yaml);
+    expect(result).toMatchObject({ name: "Local Assistant", version: "1.0.0" });
+    expect(() => configYamlSchema.parse(result)).not.toThrow();
+  });
+
+  it("throws on invalid YAML", () => {
+    const yaml = `
+name: Local Assistant
+version: 1.0.0
+schema: v1
+
+models: []
+
+context:
+  - provider: code
+  - provider: codebase
+
+data:
+  - destination: https://docs.continue.dev/
+`;
+
+    const expectedError = `Failed to parse assistant:
+Validation error: Required at \"data[0].name\"; Required at \"data[0].schema\", or Required at \"data[0].uses\"`;
+
+    expect(() => parseConfigYaml(yaml)).toThrow(expectedError);
+  });
+
+});

packages/config-yaml/src/load/unroll.ts

@@ -1,4 +1,5 @@
 import * as YAML from "yaml";
+import { fromError } from "zod-validation-error";
 import { PlatformClient, Registry } from "../interfaces/index.js";
 import { encodeSecretLocation } from "../interfaces/SecretResult.js";
 import {
@@ -30,13 +31,9 @@ export function parseConfigYaml(configYaml: string): ConfigYaml {
     if (result.success) {
       return result.data;
     }
-    throw new Error(
-      result.error.errors
-        .map((e) => `${e.path.join(".")}: ${e.message}`)
-        .join(""),
-    );
-  } catch (e) {
-    console.log("Failed to parse rolled assistant:", configYaml);
+    throw fromError(result.error);
+  } catch (e : any) {
+    console.log("Failed to parse rolled assistant:", configYaml, e.message);
     throw new Error(
       `Failed to parse assistant:\n${e instanceof Error ? e.message : e}`,
     );