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Krzysztof kuhy Rudnicki
128ede438e
Evil Martians' "ten anti-AI-slop moves" as a package: strict tsconfig base (noUncheckedIndexedAccess, exactOptionalPropertyTypes), type-checked typescript-eslint strict+stylistic, unicorn/sonarjs/perfectionist, behaviour rules for tests (expect-expect, no-focused-tests), React (hooks, @eslint-react, jsx-a11y strict, you-might-not-need-an-effect), Playwright, and layer boundaries via eslint-plugin-boundaries 7 with the article's default policies. Knip / jscpd / Stryker bases; Stryker carries no break threshold on purpose. Plugins are dependencies, not devDependencies: a flat config imports them from this package's own node_modules, so a consumer installing from the git tag gets them or the lint cannot run. No build step, so the tag needs no prepare. test/fixture is a mini repo with one planted violation per rule family; test/expected.js names the rule that must catch each, and the suite runs the real CLI over it (in a child process -- v8 coverage merges natively-loaded and transformed copies of the same module into "uncovered"). 35 tests, 100% branch coverage on the factories. eslint/fast.js is the type-free subset for a per-edit hook: 0.52 s cold on one file, measured against 1.28 s for base() without types -- importing a plugin is the cost, so it loads none, nor base.js which imports them. Probed under ESLint 10: jsx-a11y 6.10.2 (peer says <=9) and boundaries 7.2.0 both run; the fixture pins that. Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com> Claude-Session: https://claude.ai/code/session_01DnAYyNH1Sm4iJNidfYbrZJ
65 lines
2.2 KiB
JavaScript
65 lines
2.2 KiB
JavaScript
// Runs the real preset over the fixture mini-repo and checks that every
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// planted violation is caught by the rule the table names, and that the
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// clean files stay clean.
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//
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// The lint runs as the CLI in a child process, exactly as a consumer's
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// pre-commit hook runs it. It also keeps the preset modules out of this
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// process: v8 coverage merges the natively-loaded copies ESLint imports with
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// the vitest-transformed ones the unit tests import, and the merge reports
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// executed lines as uncovered.
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import { execFileSync } from "node:child_process";
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import path from "node:path";
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import { beforeAll, describe, expect, it } from "vitest";
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import { CLEAN, EXPECTED } from "./expected.js";
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const FIXTURE = path.join(import.meta.dirname, "fixture");
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const ESLINT_BIN = path.join(import.meta.dirname, "..", "node_modules", "eslint", "bin", "eslint.js");
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/** @type {Map<string, Set<string>>} relative path -> rule ids reported */
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const found = new Map();
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beforeAll(() => {
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let stdout;
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try {
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stdout = execFileSync(process.execPath, [ESLINT_BIN, ".", "--format", "json"], {
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cwd: FIXTURE,
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encoding: "utf8",
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});
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} catch (error) {
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// Planted violations make ESLint exit 1; the JSON report is still on stdout.
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stdout = error.stdout;
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}
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const results = JSON.parse(stdout.slice(stdout.indexOf("[")));
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for (const result of results) {
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const relative = path.relative(FIXTURE, result.filePath);
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found.set(relative, new Set(result.messages.map((m) => m.ruleId)));
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}
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}, 120_000);
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describe("planted violations", () => {
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for (const [file, rules] of Object.entries(EXPECTED)) {
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for (const rule of rules) {
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it(`${file}: ${rule}`, () => {
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expect([...(found.get(file) ?? [])]).toContain(rule);
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});
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}
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}
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});
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describe("clean files", () => {
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for (const file of CLEAN) {
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it(`${file} reports nothing`, () => {
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expect([...(found.get(file) ?? [])]).toEqual([]);
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});
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}
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});
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it("every fixture file is accounted for", () => {
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const expectedFiles = new Set(Object.keys(EXPECTED));
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const known = expectedFiles.union(new Set(CLEAN));
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for (const file of found.keys()) {
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expect(known.has(file), `unlisted fixture file: ${file}`).toBe(true);
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}
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});
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