no-compound-assertion

📝 Disallow compound truthiness assertions.

💼 This rule is enabled in the following configs: ✅ recommended, ☑️ unopinionated.

🔧 This rule is automatically fixable by the --fix CLI option.

A compound truthiness assertion like assert.ok(a && b) hides which operand failed. Splitting it into separate assertions gives a focused failure location and keeps the assertion output useful.

This rule reports assert()/assert.ok()/named ok()/test-context t.assert.ok() calls whose asserted value is a top-level && chain.

It autofixes standalone single-argument assertions into one assertion per operand. It does not fix assertions with custom messages, comments, same-line surrounding code/comments, braceless control-flow parents, or t.plan() counts.

Test-context assertions are recognized in tests, subtests, and hooks.

Examples

import assert from 'node:assert';

// ❌
assert.ok(user.isActive && user.hasEmail);
assert.ok(a && b && c);

// ✅
assert.ok(user.isActive);
assert.ok(user.hasEmail);
assert.ok(a);
assert.ok(b);
assert.ok(c);