import { sift, byPattern } from 'sift-r'

• byPattern()
• sift() call signatures
• Installation / Imports

pattern means either a predicate function, or something that the match-iz when() method supports, because sift uses match-iz internally.

• When working with pojos, the pattern is applied to each key/value pair.

• When working with arrays, the pattern is applied to each item in the array.

• When working with Map's, the pattern is applied to the value only, not the key.

1. sift({ key: [pattern, value], key: [pattern, value], ... })
2. sift({ key: value }, { key: pattern })
3. sift({ key: value }, pattern)
4. sift({ key: value }, [pattern, pattern, ...])

5. sift([[pattern, value], [pattern, value], ...])
6. sift([value, value], [pattern, pattern])
7. sift([value, value], pattern)
8. sift([value, value], ...patterns)

9. sift(Set | Map | iterable, ...patterns)

You can find more examples in the test suite.

$ pnpm i sift-r

Supports import/require for ESM/CJS:

// ESM
import { sift, byPattern } from 'sift-r'
// CJS
const { sift, byPattern } = require('sift-r')

Browser/UMD version here:

<script src="https://unpkg.com/sift-r/dist/browser/sift-r.browser.js"></script>
<script>
  const { sift, byPattern } = siftr
</script>