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import value from "./value.js";

import numberArray, {isNumberArray} from "./numberArray.js";

export default function(a, b) {

return (isNumberArray(b) ? numberArray : genericArray)(a, b);

}

export function genericArray(a, b) {

var nb = b ? b.length : 0,

na = a ? Math.min(nb, a.length) : 0,

x = new Array(na),

c = new Array(nb),

i;

for (i = 0; i < na; ++i) x[i] = value(a[i], b[i]);

for (; i < nb; ++i) c[i] = b[i];

return function(t) {

for (i = 0; i < na; ++i) c[i] = x[i](t);

return c;

};

}