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40 lines
1.2 KiB
JavaScript
40 lines
1.2 KiB
JavaScript
/**
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* This function is like `composeArgs` except that the arguments composition
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* is tailored for `partialRight`.
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*
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* @private
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* @param {Array} args The provided arguments.
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* @param {Array} partials The arguments to append to those provided.
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* @param {Array} holders The `partials` placeholder indexes.
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* @params {boolean} [isCurried] Specify composing for a curried function.
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* @returns {Array} Returns the new array of composed arguments.
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*/
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function composeArgsRight(args, partials, holders, isCurried) {
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let argsIndex = -1
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let holdersIndex = -1
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let rightIndex = -1
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const argsLength = args.length
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const holdersLength = holders.length
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const rightLength = partials.length
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const rangeLength = Math.max(argsLength - holdersLength, 0)
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const result = new Array(rangeLength + rightLength)
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const isUncurried = !isCurried
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while (++argsIndex < rangeLength) {
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result[argsIndex] = args[argsIndex]
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}
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const offset = argsIndex
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while (++rightIndex < rightLength) {
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result[offset + rightIndex] = partials[rightIndex]
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}
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while (++holdersIndex < holdersLength) {
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if (isUncurried || argsIndex < argsLength) {
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result[offset + holders[holdersIndex]] = args[argsIndex++]
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}
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}
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return result
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}
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export default composeArgsRight
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