Basic Examples

Learn the fundamentals of @mcabreradev/filter with these basic examples.

String Matching

Search across all object properties:

import { filter } from '@mcabreradev/filter';

const users = [
  { name: 'Alice', email: 'alice@example.com', age: 30 },
  { name: 'Bob', email: 'bob@example.com', age: 25 },
  { name: 'Charlie', email: 'charlie@example.com', age: 35 }
];

filter(users, 'alice');

filter(users, 'example.com');

Wildcard Patterns

Use SQL-like wildcards for flexible matching:

filter(users, '%alice%');

filter(users, 'Al%');

filter(users, '%son');

filter(users, 'Bo_');

Object-Based Filtering

Match by specific properties:

filter(users, { age: 30 });

filter(users, { name: 'Alice', age: 30 });

Negation

Exclude items with the ! prefix:

filter(users, '!Bob');

filter(users, '!%@example.com%');

Predicate Functions

For complex custom logic:

filter(users, (user) => user.age > 28);

filter(users, (user) =>
  user.age > 25 && user.name.startsWith('A')
);

Interactive Playground

Try these examples in the interactive playground:

Interactive Playground

Basic FilteringMongoDB OperatorsWildcard PatternsLogical Operators

Code

Output

Next Steps

• Advanced Examples
• Real-World Cases
• Operators Guide