import * as NodeServices from "@effect/platform-node/NodeServices";import { assert, it } from "@effect/vitest";import * as Data from "effect/Data";import * as Effect from "effect/Effect";import * as FileSystem from "effect/FileSystem";import * as Path from "effect/Path";import * as PlatformError from "effect/PlatformError";import * as Predicate from "effect/Predicate";import * as Schema from "effect/Schema";import * as Stream from "effect/Stream";import { ChildProcess, ChildProcessSpawner } from "effect/unstable/process";import * as NodeModule from "node:module"; // oxlint is only a transitive dependency (via vite-plus), so its bin placement// varies by package manager: pnpm hoists it into the virtual store, while// other layouts expose vite-plus's LSP-only wrapper instead. Resolve the real// package through vite-plus rather than hardcoding either layout, and do it at// module scope so a broken install fails once with a resolution error instead// of as an opaque defect in every test.const oxlintPackageJsonPath = NodeModule.createRequire(  NodeModule.createRequire(import.meta.url).resolve("vite-plus/package.json"),).resolve("oxlint/package.json"); class OxlintFixtureFailure extends Data.TaggedError("OxlintFixtureFailure")<{  readonly exitCode: number;  readonly stdout: string;  readonly stderr: string;}> {  static readonly is = (u: unknown): u is OxlintFixtureFailure =>    Predicate.isTagged(u, "OxlintFixtureFailure");} class OxlintFixtureExpectedFailure extends Data.TaggedError("OxlintFixtureExpectedFailure")<{  readonly ruleName: string;}> {  override get message() {    return `Expected oxlint to report a failure for rule ${this.ruleName}, but it passed.`;  }} const encodeOxlintConfig = Schema.encodeEffect(Schema.fromJsonString(Schema.Unknown)); interface RuleHarness {  readonly run: (    source: string,  ) => Effect.Effect<    string,    OxlintFixtureFailure | PlatformError.PlatformError | Schema.SchemaError,    NodeServices.NodeServices  >;  readonly runAndExpectFailure: (    source: string,  ) => Effect.Effect<    string,    OxlintFixtureExpectedFailure | PlatformError.PlatformError | Schema.SchemaError,    NodeServices.NodeServices  >;  readonly valid: (name: string, source: string) => void;  readonly invalid: (name: string, source: string, assertion?: (output: string) => void) => void;} interface RuleHarnessOptions {  readonly filename?: string;  /** Rule options, as they would appear after the severity in the lint config. */  readonly ruleOptions?: ReadonlyArray<unknown>;} const collectStreamAsString = <E>(stream: Stream.Stream<Uint8Array, E>): Effect.Effect<string, E> =>  stream.pipe(    Stream.decodeText(),    Stream.runFold(      () => "",      (acc, chunk) => acc + chunk,    ),  ); const spawnAndCollectOutput = Effect.fnUntraced(function* (command: ChildProcess.Command) {  const spawner = yield* ChildProcessSpawner.ChildProcessSpawner;  const child = yield* spawner.spawn(command);   const [stdout, stderr, exitCode] = yield* Effect.all(    [      collectStreamAsString(child.stdout),      collectStreamAsString(child.stderr),      child.exitCode.pipe(Effect.map(Number)),    ],    { concurrency: "unbounded" },  );   return { exitCode, stdout, stderr };}, Effect.scoped); export const createOxlintRuleHarness = (  ruleName: string,  options: RuleHarnessOptions = {},): RuleHarness => {  const [pluginName, shortRuleName] = ruleName.split("/");  const diagnosticRuleName =    pluginName && shortRuleName ? `${pluginName}\\(${shortRuleName}\\)` : ruleName;  const test = it.layer(NodeServices.layer);   const run: RuleHarness["run"] = Effect.fnUntraced(function* (source: string) {    const fs = yield* FileSystem.FileSystem;    const path = yield* Path.Path;    const fixtureDir = yield* fs.makeTempDirectoryScoped({ prefix: "t3code-oxlint-" });    const configPath = path.join(fixtureDir, ".oxlintrc.json");    const sourcePath = path.join(fixtureDir, options.filename ?? "fixture.ts");    const repoRoot = path.join(import.meta.dirname, "..", "..");    const oxlintBin = path.join(path.dirname(oxlintPackageJsonPath), "bin", "oxlint");    const pluginPath = path.join(repoRoot, "oxlint-plugin-t3code", "index.ts");     yield* fs.writeFileString(      configPath,      yield* encodeOxlintConfig({        jsPlugins: [{ name: "t3code", specifier: pluginPath }],        rules: { [ruleName]: ["error", ...(options.ruleOptions ?? [])] },      }),    );    yield* fs.makeDirectory(path.dirname(sourcePath), { recursive: true });    yield* fs.writeFileString(sourcePath, source);     // Run through the current Node binary: oxlint's bin is an extensionless    // shebang script, which Windows cannot spawn directly and which would    // otherwise pick up whatever node is first on PATH.    const output = yield* spawnAndCollectOutput(      ChildProcess.make(process.execPath, [oxlintBin, "--config", configPath, sourcePath], {        cwd: repoRoot,      }),    );     if (output.exitCode !== 0) {      return yield* new OxlintFixtureFailure({        exitCode: output.exitCode,        stdout: output.stdout,        stderr: output.stderr,      });    }     return `${output.stdout}${output.stderr}`;  }, Effect.scoped);   const runAndExpectFailure: RuleHarness["runAndExpectFailure"] = (source) =>    run(source).pipe(      Effect.matchEffect({        onFailure: (error) =>          OxlintFixtureFailure.is(error)            ? Effect.succeed(                `oxlint fixture failed with exit code ${error.exitCode}\n${error.stdout}\n${error.stderr}`,              )            : Effect.fail(error),        onSuccess: () => Effect.fail(new OxlintFixtureExpectedFailure({ ruleName })),      }),    );   return {    run,    runAndExpectFailure,    valid(name, source) {      test(name, (it) => {        it.effect("passes", () => run(source));      });    },    invalid(name, source, assertion) {      test(name, (it) => {        it.effect("reports the rule diagnostic", () =>          runAndExpectFailure(source).pipe(            Effect.tap((output) =>              Effect.sync(() => {                assert.match(output, new RegExp(diagnosticRuleName));                assertion?.(output);              }),            ),          ),        );      });    },  };};