| 1 | const error = require('../error');
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| 2 |
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| 3 | let destination;
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| 4 |
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| 5 | const destinationRegistry = {
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| 6 | set(dest) {
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| 7 | if (destination) {
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| 8 | throw error('set destination twice.');
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| 9 | }
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| 10 | destination = dest;
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| 11 | },
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| 12 | get() {
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| 13 | return destination;
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| 14 | },
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| 15 | has() {
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| 16 | return !!destination;
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| 17 | },
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| 18 | reset() {
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| 19 | destination = undefined;
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| 20 | }
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| 21 | };
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| 22 |
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| 23 | module.exports = destinationRegistry;
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