@tanstack/db-ivm/dist/cjs/operators/keying.cjs.map

Incremental View Maintenance for TanStack DB based on Differential Dataflow

{"version":3,"file":"keying.cjs","sources":["../../../src/operators/keying.ts"],"sourcesContent":["import { map } from \"./map.js\"\nimport type { PipedOperator } from \"../types.js\"\n\n/**\n * Type for a keyed value\n */\nexport type Keyed<K, V> = [K, V]\n\n/**\n * Takes an unkeyed input and returns a keyed result\n * @param keyFn - Function to generate the key for each value\n */\nexport function keyBy<T, K>(\n  keyFn: (value: T) => K\n): PipedOperator<T, Keyed<K, T>> {\n  return map((value: T): Keyed<K, T> => [keyFn(value), value])\n}\n\n/**\n * Removes the key from a keyed stream\n */\nexport function unkey<K, V>(): PipedOperator<Keyed<K, V>, V> {\n  return map(([_, value]: Keyed<K, V>): V => value)\n}\n\n/**\n * Takes a keyed input and rekeys it with a new key\n * @param keyFn - Function to generate the new key for each value\n */\nexport function rekey<K1, K2, V>(\n  keyFn: (value: V) => K2\n): PipedOperator<Keyed<K1, V>, Keyed<K2, V>> {\n  return map(([_, value]: Keyed<K1, V>): Keyed<K2, V> => [keyFn(value), value])\n}\n"],"names":["map"],"mappings":";;;AAYO,SAAS,MACd,OAC+B;AAC/B,SAAOA,IAAAA,IAAI,CAAC,UAA0B,CAAC,MAAM,KAAK,GAAG,KAAK,CAAC;AAC7D;AAKO,SAAS,QAA6C;AAC3D,SAAOA,IAAAA,IAAI,CAAC,CAAC,GAAG,KAAK,MAAsB,KAAK;AAClD;AAMO,SAAS,MACd,OAC2C;AAC3C,SAAOA,IAAAA,IAAI,CAAC,CAAC,GAAG,KAAK,MAAkC,CAAC,MAAM,KAAK,GAAG,KAAK,CAAC;AAC9E;;;;"}