ptnm

Object Pattern Matching

• zero production dependencies
• tiny code footprint
• production battle-tested in Pear

Usage

ptnm matches a pattern object against a message object.

A match succeeds when all enumerable own properties in the pattern exist in the message and are strictly equal, recursively.

Extra properties in the message are ignored.

• Non-coercive matching (===)
• Own properties only (non-enumerable/inherited pattern keys ignored)
• No cycle detection by design - do not pass circular objects

Include

const match = require('ptnm')

import match from 'ptnm'

Basic

match({ a: 1, b: 2 }, { a: 1 }) // true

Nested

match(
    { a: { b: 1, c: 2 } },
    { a: { b: 1 } }
)
// true

Missing or unequal values

match(
    { a: 1 },
    { a: 2 }
)
// false

match(
    {},
    { a: 1 }
)
// false

License

Apache-2.0