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feat(eslint-plugin): [no-unnecessary-condition] enable checkTypePredicates by default #10721

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feat(eslint-plugin): [no-unnecessary-condition] enable checkTypePredicates by default #10721

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cb280d0
feat: enable checkTypePredicates by default
mdm317 Jan 28, 2025
107a4c2
remove useless option code
mdm317 Jan 28, 2025
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2 changes: 1 addition & 1 deletion packages/eslint-plugin/src/rules/no-unnecessary-condition.ts
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Original file line number Diff line number Diff line change
Expand Up @@ -185,7 +185,7 @@ export default createRule<Options, MessageId>({
{
allowConstantLoopConditions: false,
allowRuleToRunWithoutStrictNullChecksIKnowWhatIAmDoing: false,
checkTypePredicates: false,
checkTypePredicates: true,
},
],
create(
Expand Down
15 changes: 0 additions & 15 deletions packages/eslint-plugin/tests/rules/no-unnecessary-condition.test.ts
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Original file line number Diff line number Diff line change
Expand Up @@ -965,15 +965,13 @@ declare function assert(x: unknown): asserts x;

assert(Math.random() > 0.5);
`,
options: [{ checkTypePredicates: true }],
},
{
code: `
declare function assert(x: unknown, y: unknown): asserts x;

assert(Math.random() > 0.5, true);
`,
options: [{ checkTypePredicates: true }],
},
{
// should not report because option is disabled.
Expand All @@ -993,7 +991,6 @@ class ThisAsserter {
const thisAsserter: ThisAsserter = new ThisAsserter();
thisAsserter.assertThis(true);
`,
options: [{ checkTypePredicates: true }],
},
{
// could be argued that this should report since `thisAsserter` is truthy.
Expand All @@ -1005,22 +1002,19 @@ class ThisAsserter {
const thisAsserter: ThisAsserter = new ThisAsserter();
thisAsserter.assertThis(Math.random());
`,
options: [{ checkTypePredicates: true }],
},
{
code: `
declare function assert(x: unknown): asserts x;
assert(...[]);
`,
options: [{ checkTypePredicates: true }],
},
{
// ok to report if we start unpacking spread params one day.
code: `
declare function assert(x: unknown): asserts x;
assert(...[], {});
`,
options: [{ checkTypePredicates: true }],
},
{
code: `
Expand All @@ -1044,15 +1038,13 @@ isString(a);
declare function assertString(x: unknown): asserts x is string;
assertString('falafel');
`,
options: [{ checkTypePredicates: true }],
},
{
// Technically, this has type 'falafel' and not string.
code: `
declare function isString(x: unknown): x is string;
isString('falafel');
`,
options: [{ checkTypePredicates: true }],
},
`
type A = { [name in Lowercase<string>]?: A };
Expand Down Expand Up @@ -2874,7 +2866,6 @@ assert(true);
messageId: 'alwaysTruthy',
},
],
options: [{ checkTypePredicates: true }],
},
{
code: `
Expand All @@ -2888,7 +2879,6 @@ assert(false);
messageId: 'alwaysFalsy',
},
],
options: [{ checkTypePredicates: true }],
},
{
code: `
Expand All @@ -2903,7 +2893,6 @@ assert(true, Math.random() > 0.5);
messageId: 'alwaysTruthy',
},
],
options: [{ checkTypePredicates: true }],
},
{
code: `
Expand All @@ -2917,7 +2906,6 @@ assert({});
messageId: 'alwaysTruthy',
},
],
options: [{ checkTypePredicates: true }],
},
{
code: `
Expand All @@ -2931,7 +2919,6 @@ assertsString(a);
messageId: 'typeGuardAlreadyIsType',
},
],
options: [{ checkTypePredicates: true }],
},
{
code: `
Expand All @@ -2945,7 +2932,6 @@ isString(a);
messageId: 'typeGuardAlreadyIsType',
},
],
options: [{ checkTypePredicates: true }],
},
{
code: `
Expand All @@ -2959,7 +2945,6 @@ isString('fa' + 'lafel');
messageId: 'typeGuardAlreadyIsType',
},
],
options: [{ checkTypePredicates: true }],
},

// "branded" types
Expand Down
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