From c80b949894cc1540c99b47c41713e6d1f8a791f3 Mon Sep 17 00:00:00 2001 From: Deyan Totev Date: Wed, 28 Aug 2024 13:38:55 +0300 Subject: [PATCH] feat: fix remove into --- rambdax.js | 1 - src/into.js | 138 ---------------------------------------------------- 2 files changed, 139 deletions(-) delete mode 100644 src/into.js diff --git a/rambdax.js b/rambdax.js index f07ca37..37b2af2 100644 --- a/rambdax.js +++ b/rambdax.js @@ -20,7 +20,6 @@ export * from './src/getter.js' export * from './src/glue.js' export * from './src/ifElseAsync.js' export * from './src/interpolate.js' -export * from './src/into.js' export * from './src/isPromise.js' export * from './src/isType.js' export * from './src/isValid.js' diff --git a/src/into.js b/src/into.js deleted file mode 100644 index 00ea423..0000000 --- a/src/into.js +++ /dev/null @@ -1,138 +0,0 @@ -import { isArray } from './_internals/isArray'; -import { bind } from './bind.js'; -import { curry } from './curry'; -import { identity } from './identity'; - -// move inside fn using closure, i.e. call it -const symIterator = - typeof Symbol !== 'undefined' ? Symbol.iterator : '@@iterator'; - -function _xArrayReduce(xf, acc, list) { - let idx = 0; - const len = list.length; - while (idx < len) { - // todo: @@transducer/step' must be constant - acc = xf['@@transducer/step'](acc, list[idx]); - if (acc?.['@@transducer/reduced']) { - acc = acc['@@transducer/value']; - break; - } - idx += 1; - } - return xf['@@transducer/result'](acc); -} - -function _createReduce(arrayReduce, methodReduce, iterableReduce) { - return function _reduce(xf, acc, list) { - if (_isArrayLike(list)) { - return arrayReduce(xf, acc, list); - } - if (list == null) { - return acc; - } - if (list[symIterator] != null) { - return iterableReduce(xf, acc, list[symIterator]()); - } - if (typeof list.next === 'function') { - return iterableReduce(xf, acc, list); - } - if (typeof list.reduce === 'function') { - return methodReduce(xf, acc, list, 'reduce'); - } - - throw new TypeError('reduce: list must be array or iterable'); - }; -} - -function _xIterableReduce(xf, acc, iter) { - let step = iter.next(); - while (!step.done) { - acc = xf['@@transducer/step'](acc, step.value); - if (acc?.['@@transducer/reduced']) { - acc = acc['@@transducer/value']; - break; - } - step = iter.next(); - } - return xf['@@transducer/result'](acc); -} - -function _xMethodReduce(xf, acc, obj, methodName) { - return xf['@@transducer/result']( - obj[methodName](bind(xf['@@transducer/step'], xf), acc), - ); -} - -const _xReduce = _createReduce(_xArrayReduce, _xMethodReduce, _xIterableReduce); - -function _isTransformer(obj) { - return obj != null && typeof obj['@@transducer/step'] === 'function'; -} - -function _isArrayLike(x) { - if (isArray(x)) { - return true; - } - if (!x) { - return false; - } - if (typeof x !== 'object') { - return false; - } - if (typeof x === 'string') { - return false; - } - if (x.length === 0) { - return true; - } - if (x.length > 0) { - return x.hasOwnProperty(0) && x.hasOwnProperty(x.length - 1); - } - return false; -} - -const _stepCatArray = { - '@@transducer/init': Array, - '@@transducer/step': (xs, x) => { - xs.push(x); - return xs; - }, - '@@transducer/result': identity, -}; -const _stepCatString = { - '@@transducer/init': String, - '@@transducer/step': (a, b) => a + b, - '@@transducer/result': identity, -}; -const _stepCatObject = { - '@@transducer/init': Object, - '@@transducer/step': (result, input) => - Object.assign( - result, - _isArrayLike(input) ? { [input[0]]: input[1] } : input, - ), - '@@transducer/result': identity, -}; - -function _stepCat(obj) { - if (_isTransformer(obj)) { - return obj; - } - if (_isArrayLike(obj)) { - return _stepCatArray; - } - if (typeof obj === 'string') { - return _stepCatString; - } - if (typeof obj === 'object') { - return _stepCatObject; - } - throw new Error(`Cannot create transformer for ${obj}`); -} - -export function intoFn(acc, transducer, list) { - const xf = transducer(_isTransformer(acc) ? acc : _stepCat(acc)); - return _xReduce(xf, xf['@@transducer/init'](), list); -} - -export const into = curry(intoFn);