dropProperty

Removes a property from each item.

Signature

dropProperty<K extends keyof CurrentItem>(
  propertyName: K
): PipelineBuilder</* type with K removed */>

Parameters

Parameter	Type	Description
propertyName	string	Name of the property to remove

Returns

A new PipelineBuilder with the property removed from items.

Example

interface User {
  id: string;
  name: string;
  email: string;
  passwordHash: string;  // sensitive
}

const builder = createPipeline<User>()
  .dropProperty("passwordHash");

Result:

{
  id: "u1",
  name: "John",
  email: "john@example.com"
  // passwordHash is removed
}

Use Cases

• Removing sensitive data - Passwords, tokens
• Cleaning up temporary fields - Intermediate computations
• Reducing state size - Drop fields not needed for display

Scoped Usage

Drop properties at nested levels:

const builder = createPipeline<Order>()
  .groupBy(["category"], "categories")
  .in("categories").dropProperty("internalId");

See Also

• defineProperty - Add computed properties