Initial commit

hooks/tsc-check.test.ts

@@ -0,0 +1,86 @@
+import { describe, expect, test } from "bun:test";
+import { parseTscOutput } from "./tsc-check";
+
+describe("parseTscOutput", () => {
+	test("parses single error correctly", () => {
+		const output = `src/index.ts(10,5): error TS2322: Type 'string' is not assignable to type 'number'.`;
+
+		const result = parseTscOutput(output);
+
+		expect(result.errorCount).toBe(1);
+		expect(result.errors).toHaveLength(1);
+		expect(result.errors[0]).toEqual({
+			file: "src/index.ts",
+			line: 10,
+			col: 5,
+			message: "Type 'string' is not assignable to type 'number'.",
+		});
+	});
+
+	test("parses multiple errors correctly", () => {
+		const output = `src/utils.ts(5,10): error TS2345: Argument of type 'string' is not assignable to parameter of type 'number'.
+src/utils.ts(12,3): error TS2304: Cannot find name 'foo'.
+src/index.ts(1,1): error TS2307: Cannot find module './missing'.`;
+
+		const result = parseTscOutput(output);
+
+		expect(result.errorCount).toBe(3);
+		expect(result.errors).toHaveLength(3);
+		expect(result.errors[0]?.file).toBe("src/utils.ts");
+		expect(result.errors[0]?.line).toBe(5);
+		expect(result.errors[1]?.file).toBe("src/utils.ts");
+		expect(result.errors[1]?.line).toBe(12);
+		expect(result.errors[2]?.file).toBe("src/index.ts");
+	});
+
+	test("handles empty output", () => {
+		const result = parseTscOutput("");
+
+		expect(result.errorCount).toBe(0);
+		expect(result.errors).toHaveLength(0);
+	});
+
+	test("handles output with no errors", () => {
+		const output = `Some random output
+that is not an error
+just informational text`;
+
+		const result = parseTscOutput(output);
+
+		expect(result.errorCount).toBe(0);
+		expect(result.errors).toHaveLength(0);
+	});
+
+	test("handles Windows-style paths", () => {
+		const output = `C:\\Users\\dev\\project\\src\\index.ts(5,10): error TS2322: Type error.`;
+
+		const result = parseTscOutput(output);
+
+		expect(result.errorCount).toBe(1);
+		expect(result.errors[0]?.file).toBe(
+			"C:\\Users\\dev\\project\\src\\index.ts",
+		);
+	});
+
+	test("parses errors with complex messages", () => {
+		const output = `src/types.ts(15,3): error TS2739: Type '{ name: string; }' is missing the following properties from type 'User': id, email, createdAt`;
+
+		const result = parseTscOutput(output);
+
+		expect(result.errorCount).toBe(1);
+		expect(result.errors[0]?.message).toBe(
+			"Type '{ name: string; }' is missing the following properties from type 'User': id, email, createdAt",
+		);
+	});
+
+	test("ignores warning lines", () => {
+		// TSC doesn't output warnings in this format, but ensure we only match errors
+		const output = `src/index.ts(10,5): error TS2322: This is an error.
+src/index.ts(20,5): warning TS6789: This would be a warning if TSC had them.`;
+
+		const result = parseTscOutput(output);
+
+		expect(result.errorCount).toBe(1);
+		expect(result.errors[0]?.line).toBe(10);
+	});
+});