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Add multiple predicates to is.any

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This commit is contained in:
Dave Cohen 2020-02-15 13:22:40 -06:00
parent f97029fd73
commit 54579a0167
2 changed files with 15 additions and 3 deletions
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16
source/index.ts
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@ -373,6 +373,7 @@ is.emptyMap = (value: unknown): value is Map<never, never> => is.map(value) && v
is.nonEmptyMap = <Key = unknown, Value = unknown>(value: unknown): value is Map<Key, Value> => is.map(value) && value.size > 0;
export type Predicate = (value: unknown) => boolean;
export type OverloadedPredicate = Predicate | Predicate[];
type ArrayMethod = (fn: (value: unknown, index: number, array: unknown[]) => boolean, thisArg?: unknown) => boolean;
@ -388,7 +389,16 @@ const predicateOnArray = (method: ArrayMethod, predicate: Predicate, values: unk
return method.call(values, predicate);
};
is.any = (predicate: Predicate, ...values: unknown[]): boolean => predicateOnArray(Array.prototype.some, predicate, values);
is.any = (predicate: OverloadedPredicate, ...values: unknown[]): boolean => {
if (is.array(predicate) === true) {
return (predicate as Predicate[]).some((singlePredicate: Predicate) =>
predicateOnArray(Array.prototype.some, singlePredicate, values)
);
}
return predicateOnArray(Array.prototype.some, predicate as Predicate, values);
};
is.all = (predicate: Predicate, ...values: unknown[]): boolean => predicateOnArray(Array.prototype.every, predicate, values);
const assertType = (condition: boolean, description: string, value: unknown): asserts condition => {
@ -526,7 +536,7 @@ interface Assert {
inRange: (value: number, range: number | number[]) => asserts value is number;
// Variadic functions.
any: (predicate: Predicate, ...values: unknown[]) => void | never;
any: (predicate: OverloadedPredicate, ...values: unknown[]) => void | never;
all: (predicate: Predicate, ...values: unknown[]) => void | never;
}
@ -616,7 +626,7 @@ export const assert: Assert = {
inRange: (value: number, range: number | number[]): asserts value is number => assertType(is.inRange(value, range), AssertionTypeDescription.inRange, value),
// Variadic functions.
any: (predicate: Predicate, ...values: unknown[]): void | never => assertType(is.any(predicate, ...values), AssertionTypeDescription.any, values),
any: (predicate: OverloadedPredicate, ...values: unknown[]): void | never => assertType(is.any(predicate, ...values), AssertionTypeDescription.any, values),
all: (predicate: Predicate, ...values: unknown[]): void | never => assertType(is.all(predicate, ...values), AssertionTypeDescription.all, values)
};

2
test/test.ts
View file

@ -1458,6 +1458,8 @@ test('is.any', t => {
t.true(is.any(is.object, false, {}, 'unicorns'));
t.false(is.any(is.boolean, '🦄', [], 3));
t.false(is.any(is.integer, true, 'lol', {}));
t.true(is.any([is.string, is.number], {}, true, '🦄'));
t.false(is.any([is.boolean, is.number], 'unicorns', [], new Map()));
t.throws(() => {
is.any(null as any, true);