packages/lsp/src/language.test.ts


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import { describe, expect, it } from "vitest";
import { languageId } from "./language.js";

describe("language", () => {
  it("maps .ts to typescript", () => {
    expect(languageId("file.ts")).toBe("typescript");
  });

  it("maps .tsx to typescriptreact", () => {
    expect(languageId("file.tsx")).toBe("typescriptreact");
  });

  it("maps .js to javascript", () => {
    expect(languageId("file.js")).toBe("javascript");
  });

  it("maps .luau to luau", () => {
    expect(languageId("file.luau")).toBe("luau");
  });

  it("returns unknown for unrecognized extensions", () => {
    expect(languageId("file.xyz")).toBe("unknown");
  });

  it("returns unknown for files without extensions", () => {
    expect(languageId("Makefile")).toBe("unknown");
  });
});