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50 lines
1.2 KiB
TypeScript
50 lines
1.2 KiB
TypeScript
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// Loaded from https://deno.land/x/ramda@v0.27.2/source/internal/_stepCat.js
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import _objectAssign from './_objectAssign.js';
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import _identity from './_identity.js';
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import _isArrayLike from './_isArrayLike.js';
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import _isTransformer from './_isTransformer.js';
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import objOf from '../objOf.js';
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var _stepCatArray = {
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'@@transducer/init': Array,
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'@@transducer/step': function(xs, x) {
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xs.push(x);
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return xs;
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},
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'@@transducer/result': _identity
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};
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var _stepCatString = {
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'@@transducer/init': String,
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'@@transducer/step': function(a, b) { return a + b; },
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'@@transducer/result': _identity
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};
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var _stepCatObject = {
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'@@transducer/init': Object,
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'@@transducer/step': function(result, input) {
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return _objectAssign(
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result,
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_isArrayLike(input) ? objOf(input[0], input[1]) : input
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);
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},
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'@@transducer/result': _identity
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};
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export default function _stepCat(obj) {
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if (_isTransformer(obj)) {
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return obj;
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}
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if (_isArrayLike(obj)) {
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return _stepCatArray;
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}
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if (typeof obj === 'string') {
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return _stepCatString;
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}
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if (typeof obj === 'object') {
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return _stepCatObject;
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}
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throw new Error('Cannot create transformer for ' + obj);
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}
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