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44 lines
1.2 KiB
TypeScript
44 lines
1.2 KiB
TypeScript
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// Loaded from https://deno.land/x/ramda@v0.27.2/source/internal/_xreduceBy.js
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import _curryN from './_curryN.js';
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import _has from './_has.js';
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import _xfBase from './_xfBase.js';
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function XReduceBy(valueFn, valueAcc, keyFn, xf) {
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this.valueFn = valueFn;
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this.valueAcc = valueAcc;
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this.keyFn = keyFn;
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this.xf = xf;
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this.inputs = {};
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}
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XReduceBy.prototype['@@transducer/init'] = _xfBase.init;
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XReduceBy.prototype['@@transducer/result'] = function(result) {
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var key;
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for (key in this.inputs) {
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if (_has(key, this.inputs)) {
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result = this.xf['@@transducer/step'](result, this.inputs[key]);
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if (result['@@transducer/reduced']) {
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result = result['@@transducer/value'];
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break;
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}
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}
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}
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this.inputs = null;
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return this.xf['@@transducer/result'](result);
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};
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XReduceBy.prototype['@@transducer/step'] = function(result, input) {
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var key = this.keyFn(input);
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this.inputs[key] = this.inputs[key] || [key, this.valueAcc];
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this.inputs[key][1] = this.valueFn(this.inputs[key][1], input);
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return result;
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};
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var _xreduceBy = _curryN(4, [],
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function _xreduceBy(valueFn, valueAcc, keyFn, xf) {
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return new XReduceBy(valueFn, valueAcc, keyFn, xf);
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}
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);
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export default _xreduceBy;
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