49 lines
1018 B
JavaScript
49 lines
1018 B
JavaScript
/** @internal */
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export function arrayUpdate(mutate, at, v, arr) {
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let out = arr;
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if (!mutate) {
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const len = arr.length;
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out = new Array(len);
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for (let i = 0; i < len; ++i) out[i] = arr[i];
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}
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out[at] = v;
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return out;
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}
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/** @internal */
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export function arraySpliceOut(mutate, at, arr) {
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const newLen = arr.length - 1;
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let i = 0;
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let g = 0;
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let out = arr;
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if (mutate) {
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i = g = at;
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} else {
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out = new Array(newLen);
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while (i < at) out[g++] = arr[i++];
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}
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;
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++i;
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while (i <= newLen) out[g++] = arr[i++];
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if (mutate) {
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out.length = newLen;
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}
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return out;
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}
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/** @internal */
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export function arraySpliceIn(mutate, at, v, arr) {
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const len = arr.length;
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if (mutate) {
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let i = len;
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while (i >= at) arr[i--] = arr[i];
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arr[at] = v;
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return arr;
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}
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let i = 0,
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g = 0;
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const out = new Array(len + 1);
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while (i < at) out[g++] = arr[i++];
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out[at] = v;
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while (i < len) out[++g] = arr[i++];
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return out;
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}
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//# sourceMappingURL=array.js.map
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