import { describe, expect, it } from "vitest"; import { extractJsonObject } from "./schemaJson.ts"; describe("schemaJson helpers", () => {  it("extracts a balanced JSON object from surrounding text", () => {    expect(      extractJsonObject(`Sure, here is the JSON:\`\`\`json{  "subject": "Update README",  "body": ""}\`\`\`Done.`),    ).toBe(`{  "subject": "Update README",  "body": ""}`);  });   it("ignores braces inside strings while finding the object boundary", () => {    expect(      extractJsonObject('prefix {"message":"literal } brace","nested":{"ok":true}} suffix'),    ).toBe('{"message":"literal } brace","nested":{"ok":true}}');  });   it("returns trimmed input when no JSON object starts", () => {    expect(extractJsonObject("  no structured output  ")).toBe("no structured output");  });});