| 1 | "use strict";
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| 2 |
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| 3 | Object.defineProperty(exports, "__esModule", {
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| 4 | value: true
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| 5 | });
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| 6 | exports.rpoplpush = rpoplpush;
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| 7 | function rpoplpush(source, destination) {
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| 8 | if (this.data.has(source) && !(this.data.get(source) instanceof Array)) {
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| 9 | throw new Error("Key " + source + " does not contain a list");
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| 10 | }
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| 11 | if (this.data.has(destination) && !(this.data.get(destination) instanceof Array)) {
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| 12 | throw new Error("Key " + destination + " does not contain a list");
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| 13 | }
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| 14 |
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| 15 | if (!this.data.has(source) || this.data.get(source).length === 0) {
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| 16 | return null;
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| 17 | }
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| 18 |
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| 19 | if (!this.data.has(destination)) {
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| 20 | this.data.set(destination, []);
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| 21 | }
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| 22 |
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| 23 | var newSource = this.data.get(source);
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| 24 | var item = newSource.pop();
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| 25 |
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| 26 | var newDest = this.data.get(destination);
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| 27 | newDest.unshift(item);
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| 28 |
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| 29 | this.data.set(source, newSource);
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| 30 | this.data.set(destination, newDest);
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| 31 |
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| 32 | return item;
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| 33 | } |
| \ | No newline at end of file |