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chore(type-utils)!: remove IsNullableTypeOptions interface #8934

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Merged
merged 4 commits into from
Apr 23, 2024
Merged

chore(type-utils)!: remove IsNullableTypeOptions interface #8934

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8253e21
feat(typescript-estree): remove slow deprecated and isolated programs…
JoshuaKGoldberg Apr 15, 2024
faa74c5
fix(typescript-estree): add TSEnumBody node for TSEnumDeclaration bod…
JoshuaKGoldberg Apr 15, 2024
6bd6595
chore(type-utils)!: remove IsNullableTypeOptions interface
thuchede Apr 16, 2024
e970b12
Merge branch 'v8'
JoshuaKGoldberg Apr 22, 2024
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8 changes: 2 additions & 6 deletions 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 @@ -622,13 +622,9 @@ export default createRule<Options, MessageId>({
if (prevType.isUnion()) {
const isOwnNullable = prevType.types.some(type => {
const signatures = type.getCallSignatures();
return signatures.some(sig =>
isNullableType(sig.getReturnType(), { allowUndefined: true }),
);
return signatures.some(sig => isNullableType(sig.getReturnType()));
});
return (
!isOwnNullable && isNullableType(prevType, { allowUndefined: true })
);
return !isOwnNullable && isNullableType(prevType);
}

return false;
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16 changes: 1 addition & 15 deletions packages/type-utils/src/predicates.ts
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Expand Up @@ -6,24 +6,10 @@ import { isTypeFlagSet } from './typeFlagUtils';

const log = debug('typescript-eslint:eslint-plugin:utils:types');

export interface IsNullableTypeOptions {
/**
* @deprecated - this flag no longer does anything and will be removed in the next major
*/
isReceiver?: boolean;
/**
* @deprecated - this flag no longer does anything and will be removed in the next major
*/
allowUndefined?: boolean;
}

/**
* Checks if the given type is (or accepts) nullable
*/
export function isNullableType(
type: ts.Type,
_deprecated?: IsNullableTypeOptions,
): boolean {
export function isNullableType(type: ts.Type): boolean {
return isTypeFlagSet(
type,
ts.TypeFlags.Any |
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