/** Clean implementation for Lattice; spec: docs/visual-editor-spec.md */import { describe, expect, it } from "vitest";import { CODE_LANGUAGES, codeLanguageLabel, resolveCodeLanguage } from "./code-languages"; describe("code block languages (R-BLK-7, R-FMT-8)", () => {  it("offers Plain text first and Mermaid among the named languages", () => {    expect(CODE_LANGUAGES[0]?.value).toBe("text");    expect(CODE_LANGUAGES.map((language) => language.value)).toContain("mermaid");    expect(new Set(CODE_LANGUAGES.map((language) => language.value)).size).toBe(CODE_LANGUAGES.length);  });   it.each([    ["ts", "typescript", "TypeScript"],    ["TS", "typescript", "TypeScript"],    ["py", "python", "Python"],    ["golang", "go", "Go"],    ["yml", "yaml", "YAML"],    ["xml", "html", "HTML"],    ["html", "html", "HTML"],    ["ini", "toml", "TOML"],    ["tex", "latex", "LaTeX"],    ["shell", "bash", "Bash"],    ["console", "bash", "Bash"],    ["python3", "python", "Python"],    ["json5", "json", "JSON"],    ["sass", "scss", "SCSS"],  ])("resolves the authored %s to the %s entry, labelled %s", (authored, value, label) => {    expect(resolveCodeLanguage(authored)?.value).toBe(value);    expect(codeLanguageLabel(authored, "Plain text")).toBe(label);  });   it("labels plain and unknown languages without highlighting them", () => {    expect(codeLanguageLabel("txt", "纯文本")).toBe("纯文本");    expect(resolveCodeLanguage("plain")?.value).toBe("text");    expect(codeLanguageLabel("plain", "Plain text")).toBe("Plain text");    expect(resolveCodeLanguage("txt")?.grammar).toBeUndefined();    expect(resolveCodeLanguage("mermaid")?.grammar).toBeUndefined();    expect(resolveCodeLanguage("brainfuck-ish")).toBeNull();    expect(codeLanguageLabel("brainfuck-ish", "Plain text")).toBe("brainfuck-ish");  });   it("highlights every named language with a grammar lowlight has", () => {    const grammars = CODE_LANGUAGES.flatMap((language) => (language.grammar ? [language.grammar] : []));    expect(grammars).toContain("typescript");    expect(grammars).not.toContain("plaintext");    expect(["shell", "console", "python3", "json5", "sass"].map((authored) => resolveCodeLanguage(authored)?.grammar))      .toEqual(["bash", "bash", "python", "json", "scss"]);  });});