collectype

Type Alias: Wherable<T, C>

Wherable<T, C> = object

Context type for a collection or chainable API with a where method.

Example

// Simple usage with default context (returns any)
const ctx: Wherable<{ x: number }> = {
  where: (predicate) => [1, 2, 3].filter(item => predicate({ x: item }))
};

// Usage with explicit context for chaining
class MyChain implements Wherable<{ x: number }, MyChain> {
  where(predicate: (item: { x: number }) => boolean): MyChain {
    // ...
    return this;
  }
}

Type Parameters

T

T

The item type in the collection.

C

C = any

The context type returned by where (usually the same as the containing class, for chaining).

The where method takes a predicate and returns the context C, enabling fluent chaining of filters.

Properties

where()

where: (predicate) => C

Defined in: types/utility.ts:103

Parameters

predicate

(item) => boolean

Returns

C

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